SUPERHEATER TUBE FLAT WALL STATIONARY TEMPERATURE FIELD
|
|
- Spencer Hensley
- 5 years ago
- Views:
Transcription
1 MATEC Web of Conferences 7, 008 (06) DOI: 0.05/ matecconf/ HMTTSC-06 SUPERHEATER TUBE FLAT WALL STATIONARY TEMPERATURE FIELD A.T. Parpiev, and V.S. Loginov, * National Research Tomsk Polytechnic University, 6050 Tomsk, Russia Abstract.The BKZ steam generator platen superheater tube flat wall stationary temperature fields analysis have been made. The six steel grades, using in boiler fabrication, namely, St. 0, St. 0, HMF, 5HM, H8N9T and H8NT, have been used. The temperature curves calculation has been made by using outer and inner surface heattransfer coefficients nine different combinations. Problem physical model The present paper takes the BKZ steam generator platen superheater tube element as an investigation object. The investigation object wall is flushed with the following operation mediums such as flue gases with the temperature of 7.5 K on the outer surface and steam with the temperature of 69.5 K on the inner surface [, ]. It follows that the steam heating process occurs in tubes using the heat released by flue gases by means of a heat-transfer through the cylindrical wall. The heat is transferred through the wall by means of the heat conductivity process and from the inner surface to the steam by convection. The steels heat conductivity coefficients are known [, ] and have constant values (Table ). The object calculation geometrical characteristics and heat-transfer coefficients are known also [, ] and are the constant values (Table ). The investigation object stationary temperature distributions analysis for a six steel grades at the various outer and the inner surfaces heat-transfer coefficients combinations are the present paper problem. The one-dimensional stationary heat conductivity equation with the third type boundary conditions is used for a task set solving. Problem mathematical model The flat wall stationary temperature field is determined by a mathematical model follows as: d T ( x ) 0, L x L, dx * Corresponding author: loginovvs@tpu.ru The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License.0 (
2 MATEC Web of Conferences 7, 008 (06) DOI: 0.05/ matecconf/ HMTTSC-06 dt ( x L ) m T( x L ) T m, dx dt ( x L ) m T m T( x L ). dx () λ is the steel heat conductivity coefficient, measured by Wt per m per K. α m, α m are heattransfer coefficients on the inner and outer surface, respectively, measured by Wt per square meter per K. Т m, Т m are medium temperatures on the outer and the inner surface, respectively, measured in K. T( x L ), T( x L ) are temperatures on the left and the right boundaries, measured in K. The () equation analytical solution is obtained in compliance with [5, 6] and looks like so: T ( ) m T m T x T m x. is the wall thickness, measured in m. This expression is as follows in a dimensionless form: Θ station station (Χ) = (T(x)-T m)/ (T m-t m) is the dimensionless temperature. X = x/δ is a dimensionless thickness. / ; / are the ot numbers. The obtained solution check are made by its substitution from an initial equation and corresponding boundary conditions (). This equation dimensions check are made also. The made check results have confirmed the computed solution accuracy. Results and discussion The nine heat-transfer coefficients variations on the outer and the inner surfaces are used in the paper. α zh and α zh are reduced by 00, 0 and times, respectively, from the first alternative to the forth alternative comparing with the seventh alternative. Α zh is reduced by 0 times in the fifth alternative, but is increased by 0, 0 and 0 times, respectively, from the seventh to the ninth alternatives comparing with the calculation value [, ]. The made calculations results are showed below. Table. Heat-transfer coefficients, Wt/(m K) and heat conductivity coefficients, Wt/(m K). Temperature curves αm, αm λ(st.0) λ(st.0) λ(xmf) λ(st.5xm) λ(st.х8нт) λ(st.х8н9т) ( ), + () ()
3 MATEC Web of Conferences 7, 008 (06) DOI: 0.05/ matecconf/ HMTTSC-06 Table. Temperature differences and temperature drops, K. steel grade А St.0 Б В А St.0 Б В А ХMF Б В А ХM Б В А Х8НТ Б В А Х8Н9Т Б В а is the temperature difference on the inner surface ( Т wm = Т(x = 0) Т wm), K; б is temperature drop in the cylindrical wall (δт = Т(x = L) T(x = 0)), K; в is temperature difference on the outer surface ( Т wm = Т wm Т(x = L)), K. Analyzing the flat and cylindrical walls temperature curves showed in figure, as you can see the obtained results correspond to the physical meaning. The high temperatures are on the outer surface, but on the inner surface temperatures are below. The temperature curves from the first to the ninth alternatives are the same qualitatively, but there is their quantitative distinction. The,,, and 7 temperature curves vertical intercept is particularly useful. This flat wall intercept temperature is the same for all five temperature curves, in spite of the thermal physical properties distinction. At the same time this law may be observed for all six steel grades. This vertical intercept coordinates may be determined by using any two temperature curves, forming this vertical intercept, for various ot numbers, found from expression ().
4 MATEC Web of Conferences 7, 008 (06) DOI: 0.05/ matecconf/ HMTTSC-06 Fig.. Plane wall temperature distributions diagrams for steel, K: a St.0; b St. 0; c KhMF; d 5KhM; e Kh8NT; f Kh8N9T. These mathematical expressions are shown below: x vi.. x vi.. T ( ) xvi.. Т m Т m Т m ; + ;
5 MATEC Web of Conferences 7, 008 (06) DOI: 0.05/ matecconf/ HMTTSC-06 x vi.. T ( ) xvi.. Т m Т m Т m. + k m /, k m / are the ot numbers., are the heat conductivity coefficients for and temperature curves, respectively, measured in Watt per meter per K. k is the proportional coefficient. The cylindrical and flat walls vertical intercepts coordinates, determined according (), are the following: x vi.. = 0,009 m, Т( x vi.. ) = 80,70 K. For the vertical intercept forming laws determination make calculation, followed below. Example BKZ-0-00 steam generator platen superheater. Steam temperature: Т m = 69.5 K. Flue gases temperature: Т m = 7.5 K. Material: Х8Н9Т steel. Geometrical characteristics: x = L = 0 m, x = L = m. Heat-transfer coefficients: ) α m = 8. Wt/(m K), α m = 0. Wt/(m K); ) α m7 = 87 Wt/(m K), α m7 = Wt/(m K); ) α m8 = 8 Wt/(m K), α m8 = 09 Wt/(m K) (Table ). Heat conductivity coefficients: ) λ =.9 Wt/(m K); ) λ 7 =.6 Wt/(m K); ) λ 8 = 6.59 Wt/(m K) [5, 6]. Now figure out the thermal flows ratios supplied to the outer surface and transferred from the inner surface of the cylindrical wall and heat-transfer coefficients and temperature differences ratios on the outer and the inner surfaces, respectively. Solution ) Now figure out the thermal flows densities supplied and transferred from the cylindrical wall (Table ): a) curve q s = α m Т m = = 69.5 Wt/m ; q t = α m Т m = = Wt/m ; b) curve 7 q s7 = α m7 Т m7= = 766. Wt/m ; q t7 = α m7 Т m7 = = Wt/m ; c) curve 8 q s8 = α m8 Т m8 = = Wt/m ; q t8 = α m8 Т m8 = 8. = Wt/m. ) Now figure out the thermal flows densities ratios supplied and transferred from the cylindrical wall: Q s7/ q s =.0; q t7/ q t =.0; q s8/ q s =.79; q t8/ q t =.79. ) Now figure out the heat-transfer coefficients ratios on the outer and the inner wall: α m7/ α m =.5; α m7/ α m =.5; α m8/ α m = 0, α m8/ α m = 0. ) Now figure out the temperature differences on the outer and the inner wall: 5
6 MATEC Web of Conferences 7, 008 (06) DOI: 0.05/ matecconf/ HMTTSC-06 Т m7/ Т m = 0.960; Т m7/ Т m = 0.960; Т m8/ Т m = 0.6; Т m8/ Т m =.8. The example demonstrates the temperature curves with the outer surface supplied heats and inner surface transferred heats equal ratios and platen superheater outer and inner surfaces temperature differences and heat-transfer coefficients equal ratios have vertical intercept. Conclusions There are temperature distributions vertical intercepts for steels discussed in the paper. It is possible if there are the outer surface supplied heats and inner surface transferred heats ratios equality and the superheater outer and inner surfaces temperature differences and heat-transfer coefficients ratios equality. References. Boilers thermal design. Normative method (Prod.. St. NPO TsKTI Publ., Petersburg, 998). Yu.M. Lipov, Yu.F. Samoylov, T.V. Vilenskiy, Construction and thermal design of steam boiler. Manual for graduate students (Energoatomizdat Publ., Moscow, 988). B.E. Naymark, Physical properties of steels and alloys, using in power engineering (Energiya Publ., Moscow, 967). Yu.G. Dragunov, A.S. Zubchenko, Yu.V. Kashirskiy, Steel and alloy guide (Prod.., Moscow, 05) 5. E.M. Kartashov, V.A. Kudinov, Heat conductivity and applied thermoelasticity analytical theory (LIBROKOM Publ., Moscow, 0) 6. N.S. Piskunov, Differential and integral calculus for technical colleges. vol.. Manual for technical colleges (Prod.. Nauka Publ., Moscow, 985) 7. E.A. Krasnoshchekov, A.S. Sukomel, Heat transfer problem book Manual for graduate students. Prod.. (Energiya Publ., Moscow, 980) 8. RD Strength calculation norms of steam and hot water boilers and steam and hot water pipelines (Gostekhnadzor Rossii Publ., Moscow, 999) 6
HEAT AND MASS TRANSFER IN A HIGH-POROUS LOW- TEMPERATURE THERMAL INSULATION IN REAL OPERATING CONDITIONS
MATEC Web of Conferences 3, 0033 ( 05) DOI: 0.05/ matecconf/ 0530033 C Owned by the authors, published by EDP Sciences, 05 HEAT AND MASS TRANSFER IN A HIGH-POROUS LOW- TEMPERATURE THERMAL INSULATION IN
More informationTheoretical substantiation choice of comfortable air temperature in industrial premises
Theoretical substantiation choice of comfortable air temperature in industrial premises Mikhail A. Ulchiekov 1,*, and Elena E. Bulba 1 1 National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
More informationAssessing destructive capacity of impulse loads
MATEC Web of Conferences 86, 13 (16) DOI: 1.151/ matecconf/168613 IPICSE-16 Assessing destructive capacity of impulse s Alexander Komarov 1*, Nikolay Gromov 1 and Yulia Sokolova 1 Moscow State University
More informationNUMERICAL STUDY OF THE CHARACTERISTICS OF THE AIR CONDENSER SECTION
MATEC Web of Conferences 37, 01021 ( 2015) DOI: 10.1051/ matecconf/ 20153701021 C Owned by the authors, published by EDP Sciences, 2015 NUMERICAL STUDY OF THE CHARACTERISTICS OF THE AIR CONDENSER SECTION
More informationSOLAR SIMULATOR ON THE BASIS OF POWER- FUL LIGHT-EMITTING DIODES
SOLAR SIMULATOR ON THE BASIS OF POWER- FUL LIGHT-EMITTING DIODES Oxana Aldoshina 1*, Vyacheslav Yugay 2, Nurbol Kaliaskarov 2, Ulan Esenjolov 2, Saltanat Nesipova 2 1 National Research Tomsk Polytechnic
More informationThe investigation of expanded polystyrene creep behaviour
MATEC Web of Conferences 7, 008 (07) DOI: 0.05/ matecconf/077008 XXVI R-S-P Seminar 07, Theoretical Foundation of Civil Engineering The investigation of expanded polystyrene creep behaviour Aleksey Zhukov,
More informationN. Lemcoff 1 and S.Wyatt 2. Rensselaer Polytechnic Institute Hartford. Alstom Power
N. Lemcoff 1 and S.Wyatt 2 1 Rensselaer Polytechnic Institute Hartford 2 Alstom Power Excerpt from the Proceedings of the 2012 COMSOL Conference in Boston Background Central solar receiver steam generators
More informationEXPERIMENTAL AND NUMERICAL STUDIES OF A SPIRAL PLATE HEAT EXCHANGER
THERMAL SCIENCE: Year 2014, Vol. 18, No. 4, pp. 1355-1360 1355 EXPERIMENTAL AND NUMERICAL STUDIES OF A SPIRAL PLATE HEAT EXCHANGER by Rangasamy RAJAVEL Department of Mechanical Engineering, AMET University,
More informationLaw of Heat Transfer
Law of Heat Transfer The Fundamental Laws which are used in broad area of applications are: 1. The law of conversion of mass 2. Newton s second law of motion 3. First and second laws of thermodynamics
More informationCOVENANT UNIVERSITY NIGERIA TUTORIAL KIT OMEGA SEMESTER PROGRAMME: MECHANICAL ENGINEERING
COVENANT UNIVERSITY NIGERIA TUTORIAL KIT OMEGA SEMESTER PROGRAMME: MECHANICAL ENGINEERING COURSE: MCE 524 DISCLAIMER The contents of this document are intended for practice and leaning purposes at the
More informationAnalysis of the Impact of Major Influencing Factors on the Waveform of the Surface Eddy Current Probe for Electroconductive Nonmagnetic Pipe Thickness
Journal of Physics: Conference Series PAPER OPEN ACCESS Analysis of the Impact of Major Influencing Factors on the Waveform of the Surface Eddy Current Probe for Electroconductive Nonmagnetic Pipe Thickness
More informationNumerical investigation of some stationary solutions of the Carleman system
Numerical investigation of some stationary solutions of the Carleman system Olga Vasil eva,* Moscow State University of Civil Engineering, 26 Yaroslavskoe shosse, Moscow, 29337, Russia Abstract. The negative
More informationPrinciples of Food and Bioprocess Engineering (FS 231) Problems on Heat Transfer
Principles of Food and Bioprocess Engineering (FS 1) Problems on Heat Transfer 1. What is the thermal conductivity of a material 8 cm thick if the temperature at one end of the product is 0 C and the temperature
More informationENSC 388. Assignment #8
ENSC 388 Assignment #8 Assignment date: Wednesday Nov. 11, 2009 Due date: Wednesday Nov. 18, 2009 Problem 1 A 3-mm-thick panel of aluminum alloy (k = 177 W/m K, c = 875 J/kg K, and ρ = 2770 kg/m³) is finished
More informationHeat and Mass Transfer Prof. S.P. Sukhatme Department of Mechanical Engineering Indian Institute of Technology, Bombay
Heat and Mass Transfer Prof. S.P. Sukhatme Department of Mechanical Engineering Indian Institute of Technology, Bombay Lecture No. 18 Forced Convection-1 Welcome. We now begin our study of forced convection
More informationReview: Conduction. Breaking News
CH EN 3453 Heat Transfer Review: Conduction Breaking News No more homework (yay!) Final project reports due today by 8:00 PM Email PDF version to report@chen3453.com Review grading rubric on Project page
More informationKeywords: Spiral plate heat exchanger, Heat transfer, Nusselt number
EXPERIMENTAL AND NUMERICAL STUDIES OF A SPIRAL PLATE HEAT EXCHANGER Dr.RAJAVEL RANGASAMY Professor and Head, Department of Mechanical Engineering Velammal Engineering College,Chennai -66,India Email:rajavelmech@gmail.com
More informationIn-process Measuring of Capacitance Per Unit Length for Single-core Electric Wires
Journal of Physics: Conference Series PAPER OPEN ACCESS In-process Measuring of Capacitance Per Unit Length for Single-core Electric Wires To cite this article: A E Goldshtein et al 016 J. Phys.: Conf.
More informationSteam Generator Tubing Inspection
Steam Generator Tubing Inspection Analytical Determination of Critical Flaw Dimensions in Steam Generator Tubing I. Kadenko, N. Sakhno, R. Yermolenko, Nondestructive Examination Training and Certification
More informationCalculating methodology of large base slabs: compressible strata capacity and foundation settlement
Calculating methodology of large base slabs: compressible strata capacity and foundation settlement Veniamin Isaev 1, Andrey Maltsev 1, *, and Andrey Karpov 1 1 Samara State Technical University, Academy
More informationAN ASYNCHRONOUS ELECTRIC DRIVE WITH THE INDIRECT CONTROL OF THE OUTPUT VARIABLES
AN ASYNCHRONOUS ELECTRIC DRIVE WITH THE INDIRECT CONTROL OF THE OUTPUT VARIABLES Alexander V. Glazachev 1, Yuri N. Dementyev 1*, Ivan V. Rakov 1, and Anara D. Umurzakova 1,2 1 Tomsk Polytechnic University,
More informationNumerical study of the structure flow of the gas-vapor mixture in a channel with injection of water droplets
EPJ Web of Conferences 76, 01027 (2014) DOI: 10.1051/epjconf/20147601027 C Owned by the authors, published by EDP Sciences, 2014 Numerical study of the structure flow of the gas-vapor mixture in a channel
More informationAIR-WATER COOLING IN THE BUBBLE COLUMN
MATEC Web of Conferences, 15 ( 15) DOI: 1.151/ matecconf/ 1515 C Owned by the authors, published by EDP Sciences, 15 AIR-WATER COOLING IN THE BUBBLE COLUMN Gennadiy Medvedev, Evgeniy Cherepanov National
More informationMODELING OF ACOUSTIC PROCESSES IN SOLIDS BASED ON PARTICLE INTERACTION
MATEC Web of Conferences 55, 44 (8) IME&T 7 https://doi.org/.5/matecconf/85544 MODELING OF ACOUSTIC PROCESSES IN SOLIDS BASED ON PARTICLE INTERACTION Angela Kuzovova,, Timur Muksunov Tomsk State University,
More informationCharacteristics of standing disperse medium on the filter substrate
EPJ Web of Conferences 82, 01050 (2015) DOI: 10.1051/epjconf/20158201050 C Owned by the authors, published by EDP Sciences, 2015 Characteristics of standing disperse medium on the filter substrate Michail
More informationHot Runner Technology
Peter Unger Hot Runner Technology Sample Chapter : Basic Aspects of Heat Technology ISBNs 978--56990-395-7-56990-395-6 HANSER Hanser Publishers, Munich Hanser Publications, Cincinnati 9 Basic Aspects of
More informationIntroduction to Heat and Mass Transfer
Introduction to Heat and Mass Transfer Week 16 Merry X mas! Happy New Year 2019! Final Exam When? Thursday, January 10th What time? 3:10-5 pm Where? 91203 What? Lecture materials from Week 1 to 16 (before
More informationHeat Transfer Enhancement in Vertical Narrow Plates by Natural Convection
Heat Transfer Enhancement in Vertical Narrow Plates by Natural Convection Dr.Ch.S.Naga Prasad 1 Professor & Principal Dept. of Mech, GIITS Engineering College, Aganampudi; Visakhapatnam (DT), A.P, India
More informationThe formation of acid rain in the atmosphere, adjacent to the TTP with the joint-condensing of sulfur dioxide and water vapor
EPJ Web of Conferences 76, () DOI:.5/epjconf/76 C Owned by the authors, published by EDP Sciences, The formation of acid rain in the atmosphere, adjacent to the TTP with the joint-condensing of sulfur
More informationEffect of Water Chemistry on Deposition Rate of Iron Corrosion Products in Boiler Tubes
P R E P R I N T ICPWS XV Berlin, September 8 11, 2008 Effect of Water Chemistry on Deposition Rate of Iron Corrosion Products in Boiler Tubes Tamara I. Petrova a, Valery I. Kashinsky a, Anastasia G. Isianova
More informationDerivation of minimum steel ratio: based on service applied stresses
MATEC Web of Conferences, () DOI:./ matecconf/ Derivation of minimum steel ratio: based on service applied stresses Humam AL Sebai,*, Salah Al Toubat University of Sharjah, Sharjah city, UAE Abstract.
More informationBen Wolfe 11/3/14. Figure 1: Theoretical diagram showing the each step of heat loss.
Condenser Analysis Water Cooled Model: For this condenser design there will be a coil of stainless steel tubing suspended in a bath of cold water. The cold water will be stationary and begin at an ambient
More informationDependence of equivalent thermal conductivity coefficients of single-wall carbon nanotubes on their chirality
Journal of Physics: Conference Series PAPER OPEN ACCESS Dependence of equivalent thermal conductivity coefficients of single-wall carbon nanotubes on their chirality To cite this article: V S Zarubin and
More informationExamination Heat Transfer
Examination Heat Transfer code: 4B680 date: 17 january 2006 time: 14.00-17.00 hours NOTE: There are 4 questions in total. The first one consists of independent sub-questions. If necessary, guide numbers
More informationMathematical Model for Definition of Thermal Conditions in Desublimation Process of Volatile Metal Fluorides
Research Article International Journal of Current Engineering and Technology ISSN 2277-4106 2013 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijcet Mathematical Model for
More informationOverall Heat Transfer Coefficient
Overall Heat Transfer Coefficient A heat exchanger typically involves two flowing fluids separated by a solid wall. Heat is first transferred from the hot fluid to the wall by convection, through the wall
More informationConstruction and performance analysis of a three dimensional compound parabolic concentrator for a spherical absorber
558 Journal of Scientific & Industrial Research J SCI IND RES VOL 66 JULY 2007 Vol. 66, July 2007, pp. 558-564 Construction and performance analysis of a three dimensional compound parabolic concentrator
More informationPrinciples of Food and Bioprocess Engineering (FS 231) Exam 2 Part A -- Closed Book (50 points)
Principles of Food and Bioprocess Engineering (FS 231) Exam 2 Part A -- Closed Book (50 points) 1. Are the following statements true or false? (20 points) a. Thermal conductivity of a substance is a measure
More informationResearch on power consumption of screw press for pressing of oil from rape seed
Research on power consumption of screw press for pressing of oil from rape seed Stepan Kovalyshyn, and Vasyl Tomyuk Lviv National Agrarian University, 80381, str. Dublyany, Volodymyra Velykoho 1, Ukraine
More informationEffect of flow velocity on the process of air-steam condensation in a vertical tube condenser
Effect of flow velocity on the process of air-steam condensation in a vertical tube condenser Jan Havlík 1,*, Tomáš Dlouhý 1 1 Czech Technical University in Prague, Faculty of Mechanical Engineering, Department
More information1 Introduction IPICSE-2016
(06) DOI: 0.05/ matecconf/06860006 IPICSE-06 Numerical algorithm for solving of nonlinear problems of structural mechanics based on the continuation method in combination with the dynamic relaxation method
More informationInfluence of the thickness absorbing film on the PETN ignition threshold by a laser pulse
MATEC Web of Conferences, 0067 ( 05) DOI: 0.05/ matecconf/ 050067 C Owned by the authors, published by EDP Sciences, 05 Influence of the thickness absorbing film on the PETN ignition threshold by a laser
More informationHEAT TRANSFER BY CONVECTION AND CONDUCTION FROM THE FLUID MOVING AT SOLID WALLS
HEAT TRANSFER BY CONVECTION AND CONDUCTION FROM THE FLUID MOVING AT SOLID WALLS Associate Professor Ph.D. Amado George STEFAN, Lt.Eng., doctoral student Constantin NISTOR MILITARY TECHNICAL ACADEMY Abstract.
More informationThermal Unit Operation (ChEg3113)
Thermal Unit Operation (ChEg3113) Lecture 3- Examples on problems having different heat transfer modes Instructor: Mr. Tedla Yeshitila (M.Sc.) Today Review Examples Multimode heat transfer Heat exchanger
More informationMinistry of Higher Education And Scientific Research. University Of Technology Chemical Engineering Department. Heat Transfer
Ministry of Higher Education And Scientific Research University Of Technology Heat Transfer Third Year By Dr.Jamal Al-Rubeai 2008-2009 Heat Transfer 1. Modes of Heat Transfer: Conduction, Convection and
More informationExperiment 1. Measurement of Thermal Conductivity of a Metal (Brass) Bar
Experiment 1 Measurement of Thermal Conductivity of a Metal (Brass) Bar Introduction: Thermal conductivity is a measure of the ability of a substance to conduct heat, determined by the rate of heat flow
More informationResearch on Optimization of Bearing Span of Main Reducer Gear System Based on the Transfer Matrix
MATEC Web of Conferences 3, () DOI:.5/ matecconf/3 MMME Research on Optimization of Bearing Span of Main Reducer Gear System Based on the Transfer Matrix Feng Yun HUANG, Li TIAN a, Ding WEI and Huan Huan
More informationProfessor Viktor Andreevich Bazhenov was born on July 12, 1941 in Gorodnya of Chernihiv region, Ukraine.
Professor Viktor A. Bazhenov, Dr.Techn.Sciences, Academician of the Ukraine National Academy of Pedagogical Sciences Nonlinear deformation and stability of elastic shells with inhomogeneous structures
More informationChapter 11: Heat Exchangers. Dr Ali Jawarneh Department of Mechanical Engineering Hashemite University
Chapter 11: Heat Exchangers Dr Ali Jawarneh Department of Mechanical Engineering Hashemite University Objectives When you finish studying this chapter, you should be able to: Recognize numerous types of
More informationCountercurrent heat exchanger
Countercurrent heat exchanger 1. Theoretical summary The basic operating principles and the simplified calculations regarding the counter current heat exchanger were discussed in the subject Chemical Unit
More informationExamination Heat Transfer
Examination Heat Transfer code: 4B680 date: June 13, 2008 time: 14.00-17.00 Note: There are 4 questions in total. The first one consists of independent subquestions. If possible and necessary, guide numbers
More informationAnalysis of moist air unwatering by adsorbent in fluidized bed for thermal power stations units conservation
EPJ Web of Conferences 76, 01011 (2014) DOI: 10.1051/epjconf/20147601011 C Owned by the authors, published by EDP Sciences, 2014 Analysis of moist air unwatering by adsorbent in fluidized bed for thermal
More informationCircle one: School of Mechanical Engineering Purdue University ME315 Heat and Mass Transfer. Exam #2. April 3, 2014
Circle one: Div. 1 (12:30 pm, Prof. Choi) Div. 2 (9:30 am, Prof. Xu) School of Mechanical Engineering Purdue University ME315 Heat and Mass Transfer Exam #2 April 3, 2014 Instructions: Write your name
More informationCircle one: School of Mechanical Engineering Purdue University ME315 Heat and Mass Transfer. Exam #1. February 20, 2014
Circle one: Div. 1 (Prof. Choi) Div. 2 (Prof. Xu) School of Mechanical Engineering Purdue University ME315 Heat and Mass Transfer Exam #1 February 20, 2014 Instructions: Write your name on each page Write
More informationFuel ash behavior importance of melting
Fuel ash behavior importance of melting Why is ash melting important? Bed agglomeration in fluidized bed boilers Bed behavior in BL recovery boilers Deposit formation and build up Corrosion of superheaters
More informationLong-base Hydrostatic Incline Meter. gravitational antenna
Long-base Hydrostatic Incline Meter. gravitational antenna There are many reasons resulting in relative vertical displacements of end-capping and central mirrors of gravitational antenna. Firstly is passing
More informationCalculus II Practice Test 1 Problems: , 6.5, Page 1 of 10
Calculus II Practice Test Problems: 6.-6.3, 6.5, 7.-7.3 Page of This is in no way an inclusive set of problems there can be other types of problems on the actual test. To prepare for the test: review homework,
More informationMECHANISM BEHIND FREE /NATURAL CONVECTION
CONVECTIVE HEAT TRANSFER By: Prof K. M. Joshi, Assi. Professor, MED, SSAS Institute of Technology, Surat. MECHANISM BEHIND FREE /NATURAL CONVECTION The stagnate layer of fluid in immediate vicinity of
More informationTHE EXPERIMENTAL STUDY OF THE EFFECT OF ADDING HIGH-MOLECULAR POLYMERS ON HEAT TRANSFER CHARACTERISTICS OF NANOFLUIDS
THE EXPERIMENTAL STUDY OF THE EFFECT OF ADDING HIGH-MOLECULAR POLYMERS ON HEAT TRANSFER CHARACTERISTICS OF NANOFLUIDS Dmitriy Guzei 1, *, Maxim Pryazhnikov 1, Andrey Minakov 1,, and Vladimir Zhigarev 1
More informationTesting of bus bar contact under non stationary current impacts
Testing of bus bar contact under non stationary current impacts Amankeldy Bekbaev 1,*, Erlan Sarsenbayev 1, Vasiliy Titkov 1 Satpaev Kazakh National Research Technical University, Almaty, Kazakhstan Saint
More informationTransport processes. 7. Semester Chemical Engineering Civil Engineering
Transport processes 7. Semester Chemical Engineering Civil Engineering 1. Elementary Fluid Dynamics 2. Fluid Kinematics 3. Finite Control Volume Analysis 4. Differential Analysis of Fluid Flow 5. Viscous
More information1 Introduction. EPJ Web of Conferences 110,
EPJ Web of Conferences 110, 01032 (2016) DOI: 10.1051/ epjconf/ 201611001032 C Owned by the authors, published by EDP Sciences, 2016 NUMERICAL ANALYSIS OF INFLUENCE OF THICKNESS OF LIQUID FILM ON BOTTOM
More informationFlow and heat transfer characteristics of tornado-like vortex flow
Advances in Fluid Mechanics VI 277 Flow and heat transfer characteristics of tornado-like vortex flow Y. Suzuki & T. Inoue Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology
More informationVariation of Optical Characteristics of Polarized Laser Radiation in Dielectric upon Its Low-Frequency Rotation and Heating
ISSN 3-X, Optics and Spectroscopy, 5, Vol. 9, No., pp. 3 35. Pleiades Publishing, Ltd., 5. Original Russian Text V.O. Gladyshev, D.I. Portnov, S.V. Sadovnikov, V.L. Kauts, E.A. Sharandin, 5, published
More informationPin Fin Lab Report Example. Names. ME331 Lab
Pin Fin Lab Report Example Names ME331 Lab 04/12/2017 1. Abstract The purposes of this experiment are to determine pin fin effectiveness and convective heat transfer coefficients for free and forced convection
More informationHEAT AND MASS TRANSFER INVESTIGATION IN THE EVAPORATION ZONE OF A LOOP HEAT PIPE
HEAT AND MASS TANSFE INVESTIGATION IN THE EVAPOATION ZONE OF A LOOP HEAT PIPE Mariya A. Chernysheva, Yury F. Maydanik Institute of Thermal Physics, Ural Branch of the ussian Academy of Sciences, Amundsen
More informationEffect of Composition and Mass Ratio on the Catalytic Wet Air Oxidation Catalyst Cu Fe La/FSC
MATEC Web of Conferences 67, 036 (16) DOI: 10.1051/ matecconf/16636 Effect of Composition and Mass Ratio on the Catalytic Wet Air Oxidation Catalyst Cu Fe La/FSC Chao WU a, Jianru TAN b, Haimei HUANG c
More informationElectronic Database - Monitoring Tool and Quality Improvement of Supplied Electricity
MATEC Web of Conferences 19, 01039 (2014) DOI: 10.1051/ matecconf/ 201419 01039 C Owned by the authors, published by EDP Sciences, 2014 Electronic Database - Monitoring Tool and Quality Improvement of
More informationS.E. (Chemical) (Second Semester) EXAMINATION, 2011 HEAT TRANSFER (2008 PATTERN) Time : Three Hours Maximum Marks : 100
Total No. of Questions 12] [Total No. of Printed Pages 7 [4062]-186 S.E. (Chemical) (Second Semester) EXAMINATION, 2011 HEAT TRANSFER (2008 PATTERN) Time : Three Hours Maximum Marks : 100 N.B. : (i) Answers
More informationChapter 3: Steady Heat Conduction. Dr Ali Jawarneh Department of Mechanical Engineering Hashemite University
Chapter 3: Steady Heat Conduction Dr Ali Jawarneh Department of Mechanical Engineering Hashemite University Objectives When you finish studying this chapter, you should be able to: Understand the concept
More informationCapacity calculation of the electrotechnical scheme of discharge gap replacement of the ozonizer in the СOMSOL environment
International Conference on Recent Trends in Physics 016 (ICRTP016) Journal of Physics: Conference Series 755 (016) 011001 doi:10.1088/174-6596/755/1/011001 Capacity calculation of the electrotechnical
More informationIntroduction HMTTSC Nikolay Smirnov 1,*, Vladimir Tyutikov 1, and Vadim Zakharov 1
Mathematical and physical modeling of heat transfer through window with heat-reflecting screens to determine the potential of reducing thermal costs for microclimate parameters maintaining Nikolay Smirnov,*,
More informationThe Design of Reactor Internals Hold-Down Spring
MATEC Web of Conferences 40, 02002 ( 2016) DOI: 10.1051/ matecconf/ 2016400200 2 C Owned by the authors, published by EDP Sciences, 2016 The Design of Reactor Internals Hold-Down Spring Xue Guohong 1,a,
More informationHours / 100 Marks Seat No.
17410 15116 3 Hours / 100 Seat No. Instructions (1) All Questions are Compulsory. (2) Illustrate your answers with neat sketches wherever necessary. (3) Figures to the right indicate full marks. (4) Assume
More informationInternational Journal of Multidisciplinary and Current Research
International Journal of Multidisciplinary and Current Research Research Article ISSN: 2321-3124 Available at: http://ijmcr.com in a Two-Phase Closed Cylindrical Thermosiphon in Conditions of Convective
More informationDesigning Steps for a Heat Exchanger ABSTRACT
Designing Steps for a Heat Exchanger Reetika Saxena M.Tech. Student in I.F.T.M. University, Moradabad Sanjay Yadav 2 Asst. Prof. in I.F.T.M. University, Moradabad ABSTRACT Distillation is a common method
More informationInternational Journal of Research in Advent Technology, Vol.6, No.11, November 2018 E-ISSN: Available online at
Comparative analysis of cylindrical and helical coil counter flow type of heat exchanger used in thermoelectric generator for waste heat recovery using CFD fluent Chanchal Kumar 1, a, Dr. Savita Vyas 2,b
More informationOUTCOME 2 - TUTORIAL 1
Unit 4: Heat Transfer and Combustion Unit code: K/60/44 QCF level: 5 Credit value: 5 OUTCOME - TUTORIAL Heat transfer coefficients Dimensional analysis: dimensionless groups; Reynolds, Nusselt, Prandtl,
More informationMaterials and Shape. Part 1: Materials for efficient structure. A. K. M. B. Rashid Professor, Department of MME BUET, Dhaka. Learning Objectives
MME445: Lecture 27 Materials and Shape Part 1: Materials for efficient structure A. K. M. B. Rashid Professor, Department of MME BUET, Dhaka Learning Objectives Knowledge & Understanding Understand the
More informationMathematical Modeling and Kinematics Analysis of Double Spherical Shell Rotary Docking Skirt
MATEC Web of Conferences 114, 41 (217) DOI: 1.11/ matecconf/21711441 2MAE 217 Mathematical Modeling and Kinematics Analysis of Double Spherical Shell Rotary Docking Skirt Haixia Gong 1, Zhe Liu 1,a and
More informationTesting measurements of airflow velocity in road tunnels
MATEC Web of Conferences 117, 0003 (2017) DOI: 10.101/ matecconf/20171170003 Testing measurements of airflow velocity in road tunnels Peter Danišovič 1,*, Juraj Šrámek 1, Michal Hodoň 2 and Martin Húdik
More informationТЕКА Кom. Mot. i Energ. Roln. OL PAN, 2010, 10B, THEORETICAL ANALYSIS OF A CIRCLE CURRENT CONVERTER OPERATION UNDER CONTROL OF HOLLOW CYLINDERS
ТЕКА Кom. Mot. i Energ. Roln. OL PAN, 2010, 10B, 33-42 THEORETICAL ANALYSIS OF A CIRCLE CURRENT CONVERTER OPERATION UNDER CONTROL OF HOLLOW CYLINDERS Vadim Miroshnikov, Oleivi Anver Volodymyr Dal East-Ukrainian
More informationA techno-economic probabilistic approach to superheater lifetime determination
Journal of Energy in Southern Africa 17(1): 66 71 DOI: http://dx.doi.org/10.17159/2413-3051/2006/v17i1a3295 A techno-economic probabilistic approach to superheater lifetime determination M Jaeger Rafael
More informationNatural convection heat transfer around a horizontal circular cylinder near an isothermal vertical wall
Natural convection heat transfer around a horizontal circular cylinder near an isothermal vertical wall Marcel Novomestský 1, Richard Lenhard 1, and Ján Siažik 1 1 University of Žilina, Faculty of Mechanical
More informationThe use of modern sources of information in shaping the geographic literacy of Russian school students
Journal of Subject Didactics, 2017 Vol. 2, No. 2, 67-71, DOI: 10.5281/zenodo.1239720 Short Review The use of modern sources of information in shaping the geographic literacy of Russian school students
More informationStudy and Characterization of the Limiting Thermal Phenomena in Low-Speed Permanent Magnet Synchronous Generators for Wind Energy
1 Study and Characterization of the Limiting Thermal Phenomena in Low-Speed Permanent Magnet Synchronous Generators for Wind Energy Mariana Cavique, Student, DEEC/AC Energia, João F.P. Fernandes, LAETA/IDMEC,
More informationOn materials destruction criteria. L.S.Kremnev.
On materials destruction criteria. L.S.Kremnev. Moscow State Technological University "STANKIN", Moscow, Russia, Kremnevls@yandex.ru. Abstract. In terms of nonlinear material fracture mechanics, the real
More informationTrue/False. Circle the correct answer. (1pt each, 7pts total) 3. Radiation doesn t occur in materials that are transparent such as gases.
ME 323 Sample Final Exam. 120pts total True/False. Circle the correct answer. (1pt each, 7pts total) 1. A solid angle of 2π steradians defines a hemispherical shell. T F 2. The Earth irradiates the Sun.
More informationSimulation of Radiant Heat Transfer on the Border of Coke Bed and Metal Surface of Heat Transfer Passage
Journal of Applied Mathematics and Physics, 07, 5, 8-9 http://www.scirp.org/journal/jamp ISSN Online: 7-479 ISSN Print: 7-45 Simulation of Radiant Heat Transfer on the Border of Coke Bed and Metal Surface
More informationPhysics 2B Chapter 17 Notes - Conduction Spring 2018
Heat as a Fluid Scientists in the 1700 s had no idea what was going on. They were figuring things out for the first time and they didn t have much to work with because the scientific method was still relatively
More informationSHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT B.Tech. [SEM V (ME-51, 52, 53, 54)] QUIZ TEST-1 (Session: )
QUIZ TEST-1 Time: 1 Hour HEAT AND MASS TRANSFER Note: All questions are compulsory. Q1) The inside temperature of a furnace wall ( k=1.35w/m.k), 200mm thick, is 1400 0 C. The heat transfer coefficient
More informationHW6. 1. Book problems 8.5, 8.6, 8.9, 8.23, 8.31
HW6 1. Book problems 8.5, 8.6, 8.9, 8.3, 8.31. Add an equal strength sink and a source separated by a small distance, dx, and take the limit of dx approaching zero to obtain the following equations for
More informationThermal deformation of 3U CubeSat in low Earth orbit
Thermal deformation of 3U CubeSat in low Earth orbit Vasily Gorev 1,, Anatoly Pelemeshko 1, Alexander Zadorozhny 1, and Aleksey Sidorchuk 1,2 1 Novosibirsk State University, 630090, Pirogova str., 2, Novosibirsk,
More informationELEC9712 High Voltage Systems. 1.2 Heat transfer from electrical equipment
ELEC9712 High Voltage Systems 1.2 Heat transfer from electrical equipment The basic equation governing heat transfer in an item of electrical equipment is the following incremental balance equation, with
More informationLaws of Heat Radiation from Surfaces and Gas Volumes
World Journal of Engineering and Technology, 205, 3, 260-270 Published Online November 205 in SciRes. http://www.scirp.org/journal/wjet http://dx.doi.org/0.4236/wjet.205.34027 Laws of Heat Radiation from
More informationFinite Element Modeling and Examination of Axisymmetric Thermal State of the Overvoltage Suppressor
Finite Element Modeling and Examination of Axisymmetric Thermal State of the Overvoltage Suppressor Alexey I. Borovkov Victor S. Modestov Computational Mechanics Laboratory, St. Petersburg State Technical
More informationEmpirical Co - Relations approach for solving problems of convection 10:06:43
Empirical Co - Relations approach for solving problems of convection 10:06:43 10:06:44 Empirical Corelations for Free Convection Use T f or T b for getting various properties like Re = VL c / ν β = thermal
More informationIntroduction to Heat and Mass Transfer. Week 5
Introduction to Heat and Mass Transfer Week 5 Critical Resistance Thermal resistances due to conduction and convection in radial systems behave differently Depending on application, we want to either maximize
More information6.2 Governing Equations for Natural Convection
6. Governing Equations for Natural Convection 6..1 Generalized Governing Equations The governing equations for natural convection are special cases of the generalized governing equations that were discussed
More informationTRANSIENT HEAT CONDUCTION
TRANSIENT HEAT CONDUCTION Many heat conduction problems encountered in engineering applications involve time as in independent variable. This is transient or Unsteady State Heat Conduction. The goal of
More information