Heat Recovery for next Generation of Hybrid Vehicles: Simulation and Design of a Rankine Cycle System
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1 Page 0440 EVS24 Stavanger, Norway, May 13-16, 2009 Heat Recovery or next Generation o Hybrid Vehicles: Simulation and Design o a Ranke Cycle System 1 IFP, 1-4 avenue de Bois Préau, Rueil-Malmaison, alexandre.duparchy@ip.r Abstract Keywords: energy recovery, passenger car, simulation 1 Introduction and motivations
2 Page Context 20 kw 5 kw 2.1 Recovery system The Ranke bottomg cycle
3 Page Deitions Q t E W out W c Q W out W E t c Control parameters Q P hp 3 P lp Exergy and recoverable work balances
4 Page Exergy Deition Ex H H T S S T T Ex H H T S S Properties 3.2 Energy and exergy balances Energy balances out W h h outw E m h h
5 Page 0444 out Ew m whw hw Exergy balances outw outw Ex m h hm T s s out out Exw m whw hw m wt sw sw
6 Page 0445 out m it si si 4 Parametric study Q P hp Plp 4.1 Simulated coniguration 4.2 Simulation tool Expander Compressor model
7 Page Heat exchanger models 4.3 Simulation results Variation recovered energy Q Php Plp P hp Q P lp P P lp op#2 P op#1 Php = 80 bar
8 Page Variation eiciencies Php = 80 bar a priori P hp Q Q Q P hp Exergetic approach Php = 80 bar Q 4.4 Settg Q
9 Page Exchange with no phase change H H m h P Th P T m h H m h P T h P T H m H H op#1 m 80 bar m Temperature pch T w T Xv w Xv boil pch H H boil H boil pch T H boil T T boil m h P h P T H boil
10 Page 0449 boil pch h P T h P T H m m ph H m pch H op#1 80 bar op#1 Php = 80 bar op#2 Php = 80 bar m m m m Takg to account the ite area o the boiler Choosg the luid low rate P hp m m m m m m
11 Page 0450 m m 4.5 Settg Php P hp Inluence on thermodynamic eiciency P hp op#2 boil P hp T Inluence on pchg m m T m m m P hp T T = 550 C T = 790 C
12 Page 0451 op# Choosg Php P hp 4.6 Settg Plp liq T Condenser operation P P liq m h h P SP m T T lp lp cold P lp S T T cold P lp h Inluence on cycle eiciency P Php Choosg Plp P lp
13 Page Applications 5.1 Potential steady state run P hp Relevance o the settgs Recovered power
14 Page Fluid mass variation Php Plp Q Q Php P lp P P hp lp 5.2 Inluence o the heat exchange luid Fluid low rate Adaptation with respect to the hot source temperature
15 Page water ethanol r600a Simulation results P crit 5.3 Preheatg usg the coolg water Comparisons
16 Page Conclusions and uture studies 6.1 Analyses and settgs P hp Plp 6.2 Simulation tools 6.3 Experimental studies 7 Abbreviations Q Qout W Wout Q P hp P lp m a h a PT h boil a P P t c E Ew S a PT Reerences Energy and Exergy Balances or Modern Diesel and Gasole Enges Development o New-Generation Hybrid System THS II - Drastic Improvement o Power Perormance and Fuel Economy
17 Page 0456 Additional Energy Converters Future Vehicles Progress o Saab Scania's Steam power Project Thermo Eiciency System (TES) or Reduction o Fuel Consumption and CO2 Emission The turbosteamer A system troducg the Prciple o Cogeneration Automotive Applications Combed Cycles or Hybrid Vehicles Internal Combustion Enge Fundamentals, Exergy analysis a dierent perspective on energy Part 1 : the concept o exergy Exergy analysis a dierent perspective on energy Part 2 : rational eiciency and some examples o exergy analysis Study on Maximizg Exergy Automotive Enges Heat exchangers : selection, Ratg, and thermal Design, Second Edition Introduction to Heat Transert, Fourth Edition Advanced Hybrid Vehicle Usg Rank Cycle System Authors
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