Thermostatic expansion valves TUB/TUBE and TUC/TUCE

Transcription

1 MAKING MODERN LIVING POSSIBLE Technical brochure Thermostatic expansion valves B/BE and C/CE

2 Thermostatic expansion valve, type B/BE and C/CE Contents Page Introduction Features Standard range Variant range Technical data MOP valves Identification Ordering Angleway - R, Ra, RA/R Angleway - RC, RA Capacity R Ra RA/R RC RC RA Design/Function Dimensions and weight DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

3 Thermostatic expansion valve, type B/BE and C/CE Introduction The series of thermostatic expansion valves has been developed for soldering into hermetic refrigeration systems. valves are made of stainless steel and are therefore very suitable for use in the food industry. valves can be used in many forms of refrigeration systems, in particular: Traditional refrigeration systems Heat pump systems Air conditioning units Refrigeration appliances Liquid coolers Ice cube machines Mobile refrigeration systems B/BE have adjustable superheat and are available in angleway versions as standard. C/CE have fixed superheat, but are otherwise identical to B. B/BE and C/CE can be delivered in straightway versions. All straightway versions and C/CE valves are produced to order and therefore this catalogue contains no description of a standard range or code numbers. valves are also available in a number of variants that give countless combination possibilities. Contact Danfoss for further information. All variants are available in both single packs and industrial packs as required by the customer. Features Bimetal connections - straightforward and fast soldering (no wet cloth or refrigeration pliers required). Refrigerants R, Ra, RA, R, RC, RA and future refrigerants Capacities from. to kw (. to. TR) for R - large capacity range in small steps Stable regulation Biflow function (orifice to ) Compact design - small dimensions and low weight Stainless steel, hermetically tight solder version - high connection strength - high corrosion resistance - capillary tube joints of high strength and vibration resistance Laser-welded, stainless steel thermostatic diaphragm element - optimum function - long diaphragm life - high pressure resistance Stainless steel bulb - straightforward and fast installation - good heat transfer from bulb to pipe Adjustable superheat type (B/BE) - accurate setting - adjustable in operation Fixed superheat type (C/CE) Filter with high dirt retention capacity Available with self-cleaning bleed Available with MOP (Max. Operating Pressure) Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

4 Thermostatic expansion valve, type B/BE and C/CE Standard range Versions available in the standard range: Capillary tube length:. m Range N : to + C without MOP Static superheat (SS): R, Ra, RA, RC, RA = K R =. K Connections: Inlet Orifice ¼ in./ mm Orifice / in./ mm Outlet ½ in./ mm Variant range For further information, please contact Danfoss. In addition to the standard range, B/BE and C/CE valves are also available in these variants and variant combinations: Straightway versions Range N + C MOP + C Range NM C MOP C Range B C Range B C MOP C Valves to special temperature ranges can be supplied. Static superheat (SS): K, K, K, or K (applies to B/BE and C/CE see fig. ) Capillary tube length: m Bleed: % Connections: Inlet Orifice / in./ mm Orifice ¼ in./ mm Straightway only ½ in./ mm Outlet / in./ mm Straightway only / in./ mm Capacity, orifice variants: In addition to the standard range, valves with orifice are available for Ra, RA and R. Technical data Max. bulb temperature C Max. valve body temperature C, short-lived peak C Perm. working press. (excl. RA) PS = bar Max. working pressure, RA PS = bar Max. test pressure (excl. RA) p =. bar Max. test pressure, RA p = bar Biflow operation With flow in the opposite direction, the rated capacity is reduced by up to %. BE with orifice and, all B and valves with MOP charges cannot be used for biflow operation. MOP valves To avoid charge migration when MOP valves are used, the bulb temperature must be lower than the thermostatic element temperature. MOP-points ) p e in bar gauge Range N + C Range NM C Range B C Refrigerant MOP point for evaporating temperature t e and evaporating pressure p ) e t e = + C/+ F t e = C/+ F t e = C/ F R p e = psig/. bar p e = psig/. bar p e = psig/ bar Ra p e = psig/. bar p e = psig/ bar RA / R p e = psig/. bar p e = psig/. bar p e = psig/ bar RC p e = psig/. bar p e = psig/. bar p e = psig/ bar RA p e = psig/ bar p e = psig/. bar p e = psig/ bar DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

5 Thermostatic expansion valve, type B/BE and C/CE Identification Main valve data is given on the element (fig. ) and on the valve body (fig. ). Valves with bleed are marked on the element: BP (= % bleed of nominal capacity). For valves with fixed superheat setting (type C/ CE) the superheat is printed on the element (e.g. SS C / F) Main valve data example, fig. BE = Type (E = external pressure equalisation) U = Code number R/RC = Refrigerant MOP / + C = MOP-point in psig / C / + C = Evaporating temperature range in C / + F = Evaporating temperature range in F PS bar/ MWP psig = Max. working pressure B = Date marking (week, year, weekday B = Tuesday) Fig. Main valve data example, fig. = Normal flow direction IN = Connection in inches (MM = millimetres) ORIF = Orifice number TR = Rated capacity Q nom. in Tons of Refrigeration. kw = Rated capacity Q nom. in kw Fig. Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

6 Thermostatic expansion valve, type B/BE and C/CE Ordering Angleway Supplied with bulb strap Standard valve range ) Rated capacity Q nom. is based on: Evaporating temperature t e = + C Condensing temperature t c = + C Refrigerant liquid temperature t l = + C Opening superheat OS = K ) BE with orifice and and all B (internal pressure equalisation) cannot be used for biflow operation. Range N = + C Refrigerant R/ RC ) R, RC, RA, Ra ) Til RC-anlæg skal du vælge ventiler fra det dedikerede RCprogram Type Rated capacity Q ) nom. Orifice no. ) Pressure equalisation Connection Inlet Outlet kw TR in. Code no. mm Code no. B.. int. / / U B. int. / / U B. int. / / U B. int. / / U B int. / / U B. int. / / U B. int. / / U B int. / / U BE ext. / / U BE. ext. / / U BE. ext. / / U BE ext. / / U BE.. ext. / / U B.. int. U B. int. U B. int. U B. int. U B. int. U B. int. U B. int. U B int. U RC B.. int. U BE.. ext. U BE. ext. U BE. ext. U BE. ext. U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE ext. / / U U BE.. ext. / / U U B. int. / / U B. int. / / U B.. int. / / U B. int. / / U RA B. int. / / U B. int. / / U BE. ext. / / U BE.. ext. / / U BE.. ext. / / U B.. int. / / U B.. int. / / U U B. int. / / U U B. int. / / U U B. int. / / U U B. int. / / U U B. int. / / U U Ra BE.. ext. U BE. ext. U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE ext. / / U U Valves with inch connections have / in. pressure equalisation. Valves with mm connections have mm pressure equalisation. DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

7 Thermostatic expansion valve, type B/BE and C/CE Ordering Angleway Supplied with bulb strap Standard valve range ) Rated capacity Q nom. is based on: Evaporating temperature t e = + C Condensing temperature t c = + C Refrigerant liquid temperature t l = + C Opening superheat OS = K ) BE with orifice and and all B (internal pressure equalisation) cannot be used for biflow operation. Range N = + C Valves with inch connections have ¼ in. pressure equalisation. Valves with mm connections have mm pressure equalisation. RA/R Refrigerant Type Rated capacity Q ) nom. Orifice no. ) Pressure equalisation Connection Inlet Outlet kw TR in. Code no. mm Code no. B.. int. / / U U B. int. / / U U B. int. / / U U B. int. / / U U B. int. / / U U B. int. / / U BE.. ext. / / U U RA R BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE. ext. / / U U BE ext. / / U U Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

8 Thermostatic expansion valve, type B/BE and C/CE Capacity Capacity in kw for range N = + C and opening superheat OS = K Valve type Orifice no. R Evaporating temperature + C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor Selection example Refrigerant = R Evaporating temperature t e = C Pressure drop in valve p = bar Subcooling t sub = K Evaporator capacity = kw Correction value (table) = The corrected evaporator capacity thus becomes divided by = kw Since the expansion valve capacity must be equal to or slightly more than the corrected evaporator capacity of kw, a B/BE with orifice and a table capacity of kw would be a suitable choice. DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

9 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = K Valve type Orifice no Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C R Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

10 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = + C and opening superheat OS = K Orifice Valve type no. Evaporating temperature + C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Ra Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

11 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = + C and opening superheat OS = K Valve type Orifice no. RA/R Evaporating temperature + C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

12 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = K Valve type Orifice no. RA/R Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

13 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range N = + C and opening superheat OS = K Orifice Valve type no. Evaporating temperature + C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C RC Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

14 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) Capacity in kw for range B = C and opening superheat OS = K Orifice Valve type no. Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C RC Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

15 Thermostatic expansion valve, type B/BE and C/CE Capacity (continued) RA Capacity in kw for range N = + C and opening superheat OS = K Orifice Valve type no. Evaporating temperature + C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Evaporating temperature C Correction for subcooling t sub The evaporator capacity used must be corrected if subcooling deviates from K. The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below. Note: Insufficient subcooling can produce flash gas. Correction factor for subcooling t sub t sub K K K K K K K K K K Correction factor Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

16 Thermostatic expansion valve, type B/BE and C/CE Design/Function. Bulb with capillary tube. Thermostatic element with diaphragm. Setting spindle for adjustment of static superheat SS. Fixed orifice. Filter Fig.. Angleway Superheat, B See fig. SS = static superheat OS = opening superheat SH = SS + OS = total superheat Q nom. = rated capacity Q max. = maximum capacity Static superheat SS can be adjusted with setting spindle, see fig. (B). Static superheat cannot be adjusted on C. The standard superheat setting SS is K for valves without MOP and K for valves with MOP. The opening superheat OS is K from when opening begins to when the valve gives its rated capacity Q nom.. Example Static superheat SS = K Opening superheat OS = K Total superheat SH = + = K Fig.. Straightway Fig.. Superheat DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

17 Thermostatic expansion valve, type B/BE and C/CE Dimensions and weight Connection dimensions, see ordering tables. Fig.. Angleway Weight. kg Connection dimensions, see ordering tables. Fig.. Straightway Weight. kg Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

18 Thermostatic expansion valve, type B/BE and C/CE DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -

19 Thermostatic expansion valve, type B/BE and C/CE Danfoss A/S (AC-SMC / bpv), - DKRCC.PD.AG.B/H

20 Thermostatic expansion valve, type B/BE and C/CE DKRCC.PD.AG.B/H Danfoss A/S (AC-SMC / bpv), -