DRY-EXPANSION EVAPORATORS

Transcription

1 DRY-EXPNSION EVPORTORS DP EN DH SERIES RF SERIES

2 Table of contents Performance and features 3 Design data 4 PED (E) approval 4 Denomination 4 Materials 5 apacity and maximum allowable water flow chart 6 7 Shell diameter = 141 mm 8 Shell diameter = 168 mm 9 Shell diameter = 194 mm 10 Shell diameter = 219 mm 11 Shell diameter = 273 mm 12 Shell diameter = 324 mm 13 Shell diameter = 406 mm 14 Shell diameter = 457 mm 15 Shell diameter = 508 mm 16 Refrigerant connections 17 Flange connections 17 Welding connections 18 Rotalock connections 18 Brine connections 19 Threaded water connections 19 Victaulic flexible joint water connections 20 Vic-Flange water connections 21 Welded flange water connections 21 Options 22 2 DP EN

3 Shell-and- dry expansion evaporators: DH Series Performance and features The DH design has been optimized for R407F, R407 and R410 refrigerants but it can also work with R134a as well as other HF, HFO refrigerants (like R1234ze) and also natural refrigerants like R290 and R1270. It has been developed for commercial and industrial refrigeration cooling with positive evaporation temperature, tipically in a range of 0 /10. With its innovative patented refrigerant distributor and new optimized plastic baffles designed to improve the brine heat transfer performances, the DH -and- evaporator series guarantees maximum efficiency, low cost and compactness. The DH exchange s have a specific inner grooved pattern to maximize the heat transfer coefficient and to limit the pressure drop negative effects. DP EN 3

4 Design data PED (E) approval Version Tube Shell PS (bar) TS max ( ) TS min ( ) TP (bar) PS (bar) TS max ( ) TS min ( ) TP (bar) STD , ,3 HP , ,3 STD Standard version // PS Maximum allowable pressure // TS max Maximum allowable temperature // TS min Minimum allowable temperature // TP Test Pressure DH special version with Tmin = -40 is available on demand. Please refer to BITZER for more information. Denomination DMDM DH (H) Product line Baffles span _ = standard, H = short distance, X = shorter distance Model identification number - 1, 2, 3, 4 Shell Diameter 14 = 141 mm Number of circuits 1 = 1 circuits 2 = 2 circuits 3 = 3 circuits 4 = 4 circuits 16 = 168 mm 19 = 194 mm 21 = 219 mm 27 = 273 mm 32 = 324 mm 40 = 406 mm 45 = 457 mm 50 = 508 mm In the description there may also be a letter indicating the water connections orientation. There are three available orientations: top (standard), left (L) and right (R). 4 DP EN

5 Materials The materials used for standard version of DH are the following: Tubes: copper Baffles: plastic Tubes sheet: carbon steel Shell and water connections: carbon steel Header and refrigerant connections: carbon steel Different materials are available on request, according to the following list. Please refer to BITZER for more information. Tubes: copper-nickel 90/10 alloy, stainless steel ISI316L, carbon steel Baffles: carbon steel, stainless steel ISI316L Tubes sheet: stainless steel ISI316L Shell and water connections: stainless steel ISI316L DP EN 5

6 apacity and maximum allowable water flow chart The capacities in the chart below are calculated with the following working conditions: Refrigerant = R407 Brine = Water T_in_brine = 12 T_out_brine = 7 ( 8 for DH_-141, DH_-142 ) T_evap_dew = 2,75 T_cond_dew = 45,26 S = 3K SH = 5K DH Model Q_nom [kw] DP_nom [kp] W_nom [m 3 /h] W_max [m 3 /h] DH_ , ,3 DH_ , ,5 DH_ , DH_ DH_ ,4 34 9,5 11,5 DH_ , ,8 14,5 DH_ , ,5 19 DH_ , DH_ , ,1 35 DH_ , ,7 35 DH_ , ,8 35 DH_ , ,6 55 DH_ , ,4 55 DH_ , ,1 80 DH_ ,2 80 DH_ , ,3 80 DH_ , ,1 110 DH_ , ,8 110 DH_ , DH_ , DH_ , ,5 180 DH_ , ,5 180 DH_ , ,4 200 DH_ ,5 240 DH_ ,8 240 DH_ , ,5 300 DH_ ,4 320 S: subcooling SH: superheating Q_nom: Nominal cooling capacity DP_nom: Nominal water pressure drop W_nom: Nominal water flow W_max: Maximum allowable water flow Note The maximum allowable flow for version with reduced distance of baffles ( H and X versions ) are different from the one in chart above. Please make reference to and thermal selection software for maximum admittable flow of H and X versions. 6 DP EN

7 DH standard version is not extractable bundle one. This means that the bundle is welded to the so the DH copper standard s version can t be is removed not extractable from it. bundle one. This means that the bundle is welded to the so the copper s can t be removed from it. DH is available in extractable bundle version starting DH from is available diameter in extractable 168 mm. ll models bundle with version diameter starting from = diameter 168 mm. 141 ll mm models are not with available diameter in extractable = 141 version. mm are not available in extractable version. DH not extractable version DH not extractable version DH extractable version DH extractable version 4DP EN 7

8 Shell diameter = 141 mm DH Model Dimensions Supports ections umes - Weights B D E F R T S mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH , RB22 R35 T ,9 I 7,6 DH , RB22 R35 T ,6 I 9,0 DH , RB22 R35 T2 43 5,5 I 10,8 DH , R16 R28 T2 43 5,5 I 10,8 DH , RB22 R35 T2 47 6,2 I 12,1 DH , R16 R28 T2 47 6,2 I 12,1 Ref-in Ref-out Water Weight art 3,3 8 DP EN

9 Shell diameter = 168 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH , RB22 F-B54 T ,7 II 16,6 DH , RB22 R35 T ,6 II 16,6 DH , RB22 F-B54 T ,6 II 18,5 DH , RB22 R35 T ,5 II 18,5 DH , RB22 F-B54 T ,8 II 21,1 DH , RB22 R35 T ,7 II 21,1 DH , RB22 F-B54 T ,7 II 23,0 DH , RB22 R35 T ,6 II 24,4 Ref-in Ref-out Water Weight art 3,3 DP EN 9

10 Shell diameter = 194 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH , F-35 F-B67 J ,1 II 26,5 DH , RB22 F-42 J ,0 II 26,5 DH , W22 W35 J ,0 II 26,5 DH , F-35 F-B67 J ,1 II 28,9 DH , RB22 F-42 J ,0 II 28,9 DH , W22 W35 J ,0 II 28,9 DH , F-35 F-B67 J ,4 II 31,9 DH , RB22 F-42 J ,3 II 31,9 DH , W22 W35 J ,2 II 31,9 Ref-in Ref-out Water Weight art 3,3 10 DP EN

11 Shell diameter = 219 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH , F-35 F-B67 J ,8 II 43,1 DH , R35 F-54 J ,8 II 43,1 DH , W22 W42 J ,7 II 43,1 DH , W22 W35 J ,6 II 43,1 DH , F-35 F-B67 J ,0 II 47,7 DH , R35 F-54 J ,0 II 47,7 DH , W22 W42 J ,9 II 47,7 DH , W22 W35 J ,9 II 47,7 Ref-in Ref-out Water Weight art 3,3 DP EN 11

12 Shell diameter = 273 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH F-35 F-80 J ,0 II 77,4 DH F-35 F-B54 J ,9 II 77,4 DH W35 W54 J ,9 II 77,4 DH W22 W42 J ,7 II 77,4 DH F-35 F-80 J ,2 II 73,4 DH F-35 F-B54 J ,1 II 73,4 DH W35 W54 J ,1 II 73,4 DH W22 W42 J ,9 II 73,4 DH F-35 F-80 J ,0 II 68,8 DH F-35 F-B54 J ,9 II 68,8 DH W35 W54 J ,9 II 68,8 DH W22 W42 J ,7 II 68,8 Ref-in Ref-out Water Weight art 3,3 12 DP EN

13 Shell diameter = 324 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH , F-35 F-80 J ,5 III 127,6 DH , F-35 F-80 J ,6 III 127,6 DH , F-35 F-B67 J ,5 III 127,6 DH , F-35 F-54 J ,4 III 127,6 DH , F-35 F-80 J ,0 III 121,5 DH , F-35 F-80 J ,1 III 121,5 DH , F-35 F-B67 J ,0 III 121,5 DH , F-35 F-54 J ,9 III 121,5 DH , F-35 F-80 J ,0 III 111,0 DH , F-35 F-80 J ,1 III 111,0 DH , F-35 F-B67 J ,1 III 111,0 DH , F-35 F-54 J ,0 III 111,0 Ref-in Ref-out Water Weight art 3,3 DP EN 13

14 Shell diameter = 406 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH , F-35 F-80 J ,4 III 195,6 DH , F-35 F-80 J ,5 III 195,6 DH , F-35 F-B67 J ,4 III 195,6 DH , F-35 F-80 J ,4 III 185,7 DH , F-35 F-80 J ,5 III 185,7 DH , F-35 F-B67 J ,4 III 185,7 DH , F-35 F-80 J ,3 III 168,8 DH , F-35 F-80 J ,4 III 168,8 DH , F-35 F-B67 J ,3 III 168,8 DH , F-35 F-80 J ,5 IV 205,9 DH , F-35 F-80 J ,6 IV 205,9 DH , F-35 F-B67 J ,5 IV 205,9 Ref-in Ref-out Water Weight art 3,3 14 DP EN

15 Shell diameter = 457 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH F-35 F-80 J ,9 IV 235,1 DH F-35 F-80 J ,9 IV 235,1 DH F-35 F-B67 J ,8 IV 235,1 DH F-35 F-80 J ,5 IV 218,2 DH F-35 F-80 J ,6 IV 218,2 DH F-35 F-B67 J ,5 IV 218,2 Ref-in Ref-out Water Weight art 3,3 DP EN 15

16 Shell diameter = 508 mm DH Model B Dimensions Supports ections umes - Weights D E F R T S mm mm mm mm mm mm mm mm mm mm mm D2 D3 D1 kg l l DH F-42 F-80 J ,3 IV 378,7 DH F-35 F-80 J ,4 IV 378,7 DH F-35 F-B67 J ,3 IV 378,7 DH F-42 F-80 J ,8 IV 348,5 DH F-35 F-80 J ,8 IV 348,5 DH F-35 F-B67 J ,7 IV 348,5 Ref-in Ref-out Water Weight art 3,3 16 DP EN

17 Refrigerant connections The connection between the evaporator and the refrigerant circuit is made, depending on the evaporator size, with flange connections, welding connections or Rotalock connections. Flange connections B D d Tube ection Type Name mm mm mm mm mm ODS (mm) ODS (Inch) Material ID (mm) M10 F /8 opper 35, M10 F /8 opper 42, M10 F /8 opper 54,4 B M10 F-B /8 opper 54, M10 F-B67 66,7 2 5/8 opper 67, M12 F /8 opper 80,6 DP EN 17

18 Refrigerant connections The connection between the evaporator and the refrigerant circuit is made, depending on the evaporator size, with flange connections, welding connections or Rotalock connections. Welding connections Type B ection Name mm mm ODS (mm) ID (mm) OD (mm) W , W ,3 42, W , W ,5 60,3 Rotalock connections B ection Type RT Name mm mm mm ODS (mm) ODS (Inch) ID (mm) UNF R /8 16,3 B /4-12UNF RB /8 22, /4-12UNF R , /4-12UNF R /8 35,3 18 DP EN

19 Brine connections Different connections are available, depending on the evaporator size: // with UNI/ISO 7/1 R thread up to 2 ½ // with Victaulic flexible joint starting with 3 ( DN 80 ) // with Vic-Flange water connections starting with 3 ( DN 80 ) // with welded flange according to EN The flexible joint gasket are compatible with liquids normally used in refrigeration and air conditioning applications and are suitable to be used within -40 and +90. The joints are supplied with flexible joint and a slot end with groove. Threaded water connections B d Type Name mm mm mm inch DH T11 1 1/2 DH T2 2 DH T21 2 1/2 DP EN 19

20 Brine connections Flexible joint Victaulic flexible joint water connections B OD DN Type Name mm mm mm mm DH J3 88,9 80 (3 ) DH ,2 212,8 50,8 J4 114,3 100 (4 ) DH ,8 250,8 50,8 J5 141,3 125 (5 ) DH ,2 285,8 50,8 J6 168,3 150 (6 ) DH ,5 349,3 60,3 J8 219,1 200 (8 ) DH J (10 ) ection pipe Victaulic flexible joint water connections DN D E F G Type mm mm mm mm DH (3 ) 15,9 7,95 84,9 2 DH (4 ) 15,9 9,5 110,1 2,1 DH (5 ) 15,9 9,51 35,5 2,9 DH (6 ) 19 9,5 163,9 2,2 DH (8 ) 19 11,1 214,4 2,3 DH (10 ) 19 12,7 268,3 2,4 20 DP EN

21 Vic-Flange water connections On request Vic-flanges can be supplied for water connections. The Vic-Flange kit contains: // Vic-Flange adapter ( see picture below ) with gasket // arbon steel counter flange according to EN Only for extractable bundle version, the DH can also be supplied with welded flange according to EN Welded flange water connections DN Type mm DH DH DH DH DH DH DH DH DH DP EN 21

22 Options 22 DP EN

23 Options The following options are available for DH evaporator: // Vic-flanges water connections ( see Brine connections section for more details ) // Insulation ( thickness ¾ ) made of close cell elastomer layer ( glued ) to the evaporator surface with textile covering. The thickness of the insulation is 19 mm. // Welded supports ( see General dimension section more informations ) // Brackets supports: The DH can be equipped with supports welded to the (illustrated in the General dimension section) or with universal brackets which are positioned in the installation phase and allows therefore the maximum flexibility (available up to diameter 406 mm). See table below for brackets dimensions. ll dimensions are in mm. DH Operators B D E F Slots i L min max G H Type DP EN 23

24 BITZER Kühlmaschinenbau GmbH Eschenbrünnlestraße 15 // Sindelfingen // Germany Tel +49 (0) // Fax +49 (0) // 1 DP EN The products can deviate in colour from the shown product pictures. // Subject to change // //