Technical data

www.dimplex.de 01.2012 | Project planning manual for heat pumps for heating and domestic hot water preparation | 53
Water-to-water heat pump 4.3.3.1
4.3.3.1 Stainless steel plate heat exchangers WTE 20 to WTE 40
Fig. 4.2: WTE 20 – WTE 37 Fig. 4.3: WTE 40
Device information, stainless steel plate heat exchanger
Dimensions and weights Unit WTE 20 WTE 30 WTE 37 WTE 40
Number of plates 34 43 50 28
Actual surface m² 2.69 3.44 4.03 3.90
Volume dm³ 7 9 11 9
Height [H] mm 748 748 748 896
Width [B] mm 200 200 200 283
Depth [L] mm 270 320 420 437
Net weight kg 67 71 76 132
Gross weight kg 74 80 87 143
Accessories SZB 250 SZB 300 SZB 400 SZB 400
Secondary Primary Secondary Primary Secondary Primary Secondary Primary
Quantity m³ / h 4.5 5.8 7.0 8.0 8.5 9.3 11.0 11.0
Inlet temperature °C 5.00 10.00 5.00 10.00 5.00 10.00 5.00 10.00
Outlet temperature °C 8.41 7.00 8.07 7.00 7.92 7.00 7.58 7.00
Pressure drop Pa 23,740 30,220 32,110 37,750 36,630 37,720 37,610 32,960
Transferred output kW 18 25 29 33
Inlet stubs F1 F3 F1 F3 F1 F3 F1 F3
Outlet stubs F4 F2 F4 F2 F4 F2 F4 F2
Secondary connections DN 32 (1 ¼" external thread) DN 50 (2" external thread)
Primary connections DN 32 (1 ¼" external thread) DN 50 (2" external thread)
Plate material 0.5 mm AISI 316 0.4 mm AISI 316
Sealing material NITRIL HT HANG ON (H) / 140