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Water Source and Ground Source Heat Pump, 200kW~2400kW

Application

The water source and ground source heat pump is designed and produced by Ruidong for heating, cooling, and heat recovery in large commercial applications. These pumps are suitable for installation in malls, office buildings, workshops, hotels, hospitals and other large-scale structures.

Technical Parameters
Water source condition, R22 dry type water source and ground source heat pump
Model RLSG-R 200 240 280 320 360 400 480 530 620 720 840 940 1100 1200 400 480 560 640 720 800 960 1060 1240 1440 1680 1880 2200 2400
Nominal cooling capacity kW 207 239 284 321 375 403 469 526 609 720 839 940 1080 1179 414 478 568 642 750 806 938 1052 1218 1440 1678 1880 2160 2358
Cooling power input kW 39 45 52 60 69 72 88 93 106 125 140 159 180 198 78 90 104 120 138 144 176 186 212 250 280 318 360 396
Nominal heating capacity kW 221 253 304 343 391 417 506 559 648 768 877 1012 1157 1247 442 506 608 686 782 834 1012 1118 1296 1536 1754 2024 2314 2494
Heating power input kW 54 61 70 80 92 96 116 124 142 163 183 208 235 260 108 122 140 160 184 192 232 248 284 326 366 416 470 520
Power 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ
Start model Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding
Refrigerant R22 R22 R22 R22
Charging 41 48 57 64 75 81 94 105 122 144 168 188 216 236 83 96 114 128 150 161 188 210 244 288 336 376 432 472
Refrigerant control EXV EXV EXV EXV
Compressor Type Semi-closed double screw Semi-closed double screw Semi-closed double screw Semi-closed double screw
Qty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Evaporator Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Cooled water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Condenser Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Hot water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Structure Vertical Horizontal
Dimension
(mm)
L 3050 3050 3050 2950 2950 2950 2950 3150 3450 3450 3450 3500 3500 3600 4300 4300 4300 4300 4350 4350 4400 4400 4400 4450 4450 4550 4550 4550
W 870 870 870 1050 1050 1100 1100 1250 1400 1400 1400 1580 1580 1640 1300 1300 1300 1330 1400 1400 1500 1500 1550 1685 1800 1900 1900 1900
H 1650 1650 1650 1600 1650 2000 2000 1660 1840 1840 1840 1880 1880 1900 1800 1800 1800 1800 1800 1800 1900 1900 1900 2050 2050 2150 2150 2150
Unit weight Kg 1450 1610 1670 1700 1880 2260 2340 2400 2650 3220 3330 3820 3960 4310 2870 2950 3060 3290 3420 4150 4710 4810 5180 6490 7280 7610 7880 8280
Running weight Kg 1600 1770 1840 1870 2070 2490 2570 2640 2920 3530 3630 4130 4280 4610 3070 3160 3270 3520 3660 4440 5040 5150 5520 6850 7640 7990 8270 8690
Note:Cooling:Cooled water:12/7℃,Well water:18/29℃。
Heating:Heating water:40/--℃,Well water:15/--℃。
Water source condition, R22 flooded type water source and ground source heat pump
Model RLSG-R 200 240 280 320 360 400 480 530 620 720 840 940 1100 1200 400 480 560 640 720 800 960 1060 1240 1440 1680 1880 2200 2400
Nominal cooling capacity kW 207 239 284 321 375 403 469 526 609 720 839 940 1080 1179 414 478 568 642 750 806 938 1052 1218 1440 1678 1880 2160 2358
Cooling power input kW 39 45 52 60 69 72 88 93 106 125 140 159 180 198 78 90 104 120 138 144 176 186 212 250 280 318 360 396
Nominal heating capacity kW 221 253 304 343 391 417 506 559 648 768 877 1012 1157 1247 442 506 608 686 782 834 1012 1118 1296 1536 1754 2024 2314 2494
Heating power input kW 54 61 70 80 92 96 116 124 142 163 183 208 235 260 108 122 140 160 184 192 232 248 284 326 366 416 470 520
Power 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ
Start model Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding
Refrigerant R22 R22 R22 R22
Charging 41 48 57 64 75 81 94 105 122 144 168 188 216 236 83 96 114 128 150 161 188 210 244 288 336 376 432 472
Refrigerant control EXV EXV EXV EXV
Compressor Type Semi-closed double screw Semi-closed double screw Semi-closed double screw Semi-closed double screw
Qty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Evaporator Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Cooled water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Condenser Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Hot water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Structure Vertical Horizontal
Dimension
(mm)
L 3050 3050 3050 2950 2950 2950 2950 3150 3450 3450 3450 3500 3500 3600 4300 4300 4300 4300 4350 4350 4400 4400 4400 4450 4450 4550 4550 4550
W 870 870 870 1050 1050 1100 1100 1250 1400 1400 1400 1580 1580 1640 1300 1300 1300 1330 1400 1400 1500 1500 1550 1685 1800 1900 1900 1900
H 1650 1650 1650 1600 1650 2000 2000 1660 1840 1840 1840 1880 1880 1900 1800 1800 1800 1800 1800 1800 1900 1900 1900 2050 2050 2150 2150 2150
Unit weight Kg 1450 1610 1670 1700 1880 2260 2340 2400 2650 3220 3330 3820 3960 4310 2870 2950 3060 3290 3420 4150 4710 4810 5180 6490 7280 7610 7880 8280
Running weight Kg 1600 1770 1840 1870 2070 2490 2570 2640 2920 3530 3630 4130 4280 4610 3070 3160 3270 3520 3660 4440 5040 5150 5520 6850 7640 7990 8270 8690
Note:Cooling:Cooled water:12/7℃,Well water:18/29℃。
Heating:Heating water:40/--℃,Well water:15/--℃。
Water source condition, R407c dry type water source and ground source heat pump
Model RLSG-CR 200 240 280 320 360 400 480 530 620 720 840 940 1100 1200 400 480 560 640 720 800 960 1060 1240 1440 1680 1880 2200 2400
Nominal cooling capacity kW 207 239 284 321 375 403 469 526 609 720 839 940 1080 1179 414 478 568 642 750 806 938 1052 1218 1440 1678 1880 2160 2358
Cooling power input kW 39 45 52 60 69 72 88 93 106 125 140 159 180 198 78 90 104 120 138 144 176 186 212 250 280 318 360 396
Nominal heating capacity kW 221 253 304 343 391 417 506 559 648 768 877 1012 1157 1247 442 506 608 686 782 834 1012 1118 1296 1536 1754 2024 2314 2494
Heating power input kW 54 61 70 80 92 96 116 124 142 163 183 208 235 260 108 122 140 160 184 192 232 248 284 326 366 416 470 520
Power 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ
Start model Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding
Refrigerant R407C R407C R407C R407C
Charging 46 53 62 71 83 89 103 116 134 158 185 207 238 259 91 105 125 141 165 177 206 231 268 317 369 414 475 519
Refrigerant control EXV EXV EXV EXV
Compressor Type Semi-closed double screw Semi-closed double screw Semi-closed double screw Semi-closed double screw
Qty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Evaporator Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Cooled water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Condenser Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Hot water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Structure Vertical Horizontal
Dimension
(mm)
L 3050 3050 3050 2950 2950 2950 2950 3150 3450 3450 3450 3500 3500 3600 4300 4300 4300 4300 4350 4350 4400 4400 4400 4450 4450 4550 4550 4550
W 870 870 870 1050 1050 1100 1100 1250 1400 1400 1400 1580 1580 1640 1300 1300 1300 1330 1400 1400 1500 1500 1550 1685 1800 1900 1900 1900
H 1650 1650 1650 1600 1650 2000 2000 1660 1840 1840 1840 1880 1880 1900 1800 1800 1800 1800 1800 1800 1900 1900 1900 2050 2050 2150 2150 2150
Unit weight Kg 1450 1610 1670 1700 1880 2260 2340 2400 2650 3220 3330 3820 3960 4310 2870 2950 3060 3290 3420 4150 4710 4810 5180 6490 7280 7610 7880 8280
Running weight Kg 1600 1770 1840 1870 2070 2490 2570 2640 2920 3530 3630 4130 4280 4610 3070 3160 3270 3520 3660 4440 5040 5150 5520 6850 7640 7990 8270 8690
Note:Cooling:Cooled water:12/7℃,Well water:18/29℃。
Heating:Heating water:40/--℃,Well water:15/--℃。  
Water source condition, R134a dry type water source and ground source heat pump
Model RLSG-AR 220 260 300 340 380 460 540 620 700 740 840 440 520 600 680 760 920 1080 1240 1400 1480 1680
Nominal cooling capacity kW 219 255 296 328 380 457 539 612 701 760 840 438 510 592 656 760 914 1078 1224 1402 1520 1680
Cooling power input kW 40 45 52 58 66 78 88 100 113 131 140 80 90 104 116 132 156 176 200 226 262 280
Nominal heating capacity kW 236 271 318 354 399 481 562 651 747 813 888 472 542 636 708 798 962 1124 1302 1494 1626 1776
Heating power input kW 53 60 69 77 88 103 115 134 151 172 184 106 120 138 154 176 206 230 268 302 344 368
Power 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ
Start model Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding
Refrigerant R134A R134A R134A R134A
Charging 55 64 74 82 95 114 135 153 175 190 210 110 128 148 164 190 229 270 306 351 380 420
Refrigerant control EXV EXV EXV EXV
Compressor Type Semi-closed double screw Semi-closed double screw Semi-closed double screw Semi-closed double screw
Qty 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2
Evaporator Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 100 125 125 125 150 150 150 150 200 200 200
Cooled water m3/h 38 44 51 56 65 79 93 105 121 131 144 75 88 102 113 131 157 185 211 241 261 289
Well water m3/h 20 23 27 30 35 42 49 56 64 70 77 40 47 54 60 70 84 98 111 127 139 153
Condenser Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 100 125 125 125 150 150 150 150 200 200 200
Hot water m3/h 38 44 51 56 65 79 93 105 121 131 144 75 88 102 113 131 157 185 211 241 261 289
Well water m3/h 20 23 27 30 35 42 49 56 64 70 77 40 47 54 60 70 84 98 111 127 139 153
Structure Vertical Horizontal
Dimension
(mm)
L 3050 3050 2950 2950 2950 2950 3150 3450 3450 3450 3450 4300 4300 4300 4350 4350 4400 4400 4400 4450 4450 4450
W 870 870 1050 1050 1100 1100 1300 1400 1400 1400 1400 1300 1300 1300 1400 1400 1500 1500 1500 1800 1800 1800
H 1650 1650 1600 1650 2000 2000 1660 1840 1840 1840 1840 1800 1800 1800 1800 1800 1900 1900 1900 2050 2050 2050
Unit weight Kg 1850 2040 2110 2150 2380 2860 3050 3200 3520 3770 3860 3280 3520 3660 3700 4020 5010 5820 6110 6690 6730 7480
Running weight Kg 2040 2240 2320 2370 2620 3150 3350 3520 3880 4130 4210 3510 3770 3910 3960 4300 5360 6230 6540 7130 7100 7850
Note:Cooling:Cooled water:12/7℃,Well water:18/29℃。
Heating:Heating water:40/--℃,Well water:15/--℃。
Water source condition, R134a flooded type water source and ground source heat pump
Model RLSG-ARM 240 280 340 380 440 500 600 700 760 840 940 480 560 680 760 880 1000 1200 1400 1520 1680 1880
Nominal cooling capacity kW 238 278 336 374 429 518 594 687 781 845 923 476 556 672 748 858 1036 1188 1374 1562 1690 1846
Cooling power input kW 41 47 53 59 68 79 90 102 116 134 142 82 94 106 118 136 158 180 204 232 268 284
Nominal heating capacity kW 260 299 352 390 440 530 620 716 822 897 977 520 598 704 780 880 1060 1240 1432 1644 1794 1954
Heating power input kW 54 62 70 79 89 104 117 136 154 175 188 108 124 140 158 178 208 234 272 308 350 376
Power 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ
Start model Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding
Refrigerant R134A R134A R134A R134A
Charging 60 70 84 94 107 130 149 172 195 211 231 119 139 168 187 215 259 297 344 391 423 462
Refrigerant control EXV EXV EXV EXV
Compressor Type Semi-closed double screw Semi-closed double screw Semi-closed double screw Semi-closed double screw
Qty 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2
Evaporator Type Shell & tube flooded Shell & tube flooded Shell & tube flooded Shell & tube flooded
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 100 125 125 125 150 150 150 150 200 200 200
Cooled water m3/h 41 48 58 64 74 89 102 118 134 145 159 82 96 116 129 148 178 204 236 269 291 318
Well water m3/h 22 25 30 34 39 47 53 62 70 77 83 44 51 61 68 78 93 107 123 140 153 167
Condenser Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 100 125 125 125 150 150 150 150 200 200 200
Hot water m3/h 41 48 58 64 74 89 102 118 134 145 159 82 96 116 129 148 178 204 236 269 291 318
Well water m3/h 22 25 30 34 39 47 53 62 70 77 83 44 51 61 68 78 93 107 123 140 153 167
Structure Horizontal
Dimension
(mm)
L 3300 3300 3300 3300 3300 3300 3300 3300 3400 3450 3450 3550 3550 3650 3650 3650 3800 3800 4600 4600 4700 4700
W 1350 1350 1350 1350 1350 1400 1400 1400 1400 1580 1580 1300 1300 1580 1580 1580 1650 1650 1650 1760 1760 1760
H 1850 1850 1850 1850 1850 1850 1850 1850 2050 2100 2100 1850 1850 2100 2100 2100 2100 2100 2100 2300 2300 2300
Unit weight Kg 2370 2420 2500 2560 2670 3280 3550 3720 3870 4300 4470 4320 4620 4800 4900 5290 6370 6550 7030 7560 7950 8150
Running weight Kg 2620 2660 2750 2820 2940 3610 3900 4090 4260 4710 4870 4670 4990 5130 5240 5670 6810 7010 7520 8090 8510 8730
Note:Cooling:Cooled water:12/7℃,Well water:18/29℃。
Heating:Heating water:40/--℃,Well water:15/--℃。
Water source condition, R407c dry type water source and ground source heat pump
Model RLSG-CR 200 240 280 320 360 400 480 530 620 720 840 940 1100 1200 400 480 560 640 720 800 960 1060 1240 1440 1680 1880 2200 2400
Nominal cooling capacity kW 207 239 284 321 375 403 469 526 609 720 839 940 1080 1179 414 478 568 642 750 806 938 1052 1218 1440 1678 1880 2160 2358
Cooling power input kW 39 45 52 60 69 72 88 93 106 125 140 159 180 198 78 90 104 120 138 144 176 186 212 250 280 318 360 396
Nominal heating capacity kW 221 253 304 343 391 417 506 559 648 768 877 1012 1157 1247 442 506 608 686 782 834 1012 1118 1296 1536 1754 2024 2314 2494
Heating power input kW 54 61 70 80 92 96 116 124 142 163 183 208 235 260 108 122 140 160 184 192 232 248 284 326 366 416 470 520
Power 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ 3N-380V-50HZ
Start model Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding Y-△ or Split winding
Refrigerant R407C R407C R407C R407C
Charging 46 53 62 71 83 89 103 116 134 158 185 207 238 259 91 105 125 141 165 177 206 231 268 317 369 414 475 519
Refrigerant control EXV EXV EXV EXV
Compressor Type Semi-closed double screw Semi-closed double screw Semi-closed double screw Semi-closed double screw
Qty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Evaporator Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Cooled water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Condenser Type Shell & tube Shell & tube Shell & tube Shell & tube
Pressure drop KPa 70-90 70-90 70-90 70-90
Pipe connection DN 80 80 80 100 100 100 125 125 125 150 150 150 150 200 100 125 125 125 150 150 150 150 200 200 200 250 250 250
Hot water m3/h 36 41 49 55 65 69 81 90 105 124 144 162 186 203 71 82 98 110 129 139 161 181 209 248 289 323 372 406
Well water m3/h 19 22 26 30 35 37 44 48 56 66 77 86 99 108 38 44 53 60 69 74 87 97 112 132 153 172 197 215
Structure Vertical Horizontal
Dimension
(mm)
L 3050 3050 3050 2950 2950 2950 2950 3150 3450 3450 3450 3500 3500 3600 4300 4300 4300 4300 4350 4350 4400 4400 4400 4450 4450 4550 4550 4550
W 870 870 870 1050 1050 1100 1100 1250 1400 1400 1400 1580 1580 1640 1300 1300 1300 1330 1400 1400 1500 1500 1550 1685 1800 1900 1900 1900
H 1650 1650 1650 1600 1650 2000 2000 1660 1840 1840 1840 1880 1880 1900 1800 1800 1800 1800 1800 1800 1900 1900 1900 2050 2050 2150 2150 2150
Unit weight Kg 1450 1610 1670 1700 1880 2260 2340 2400 2650 3220 3330 3820 3960 4310 2870 2950 3060 3290 3420 4150 4710 4810 5180 6490 7280 7610 7880 8280
Running weight Kg 1600 1770 1840 1870 2070 2490 2570 2640 2920 3530 3630 4130 4280 4610 3070 3160 3270 3520 3660 4440 5040 5150 5520 6850 7640 7990 8270 8690
Note:Cooling:Cooled water:12/7℃,Well water:18/29℃。
Heating:Heating water:40/--℃,Well water:15/--℃。

Protection measures:
1. High and low voltage protection
2. Anti-freezing protection
3. Temperature control
4. Power anti-phase protection
5. High & low pressure protection
6. High pressure exhaust temperature protection
7. Built-in motor overheating protection
8. Over-current protection
9. Safety valve
10. Check valve

Features

1. Compressor:
a. Semi-closed dual screw design. Compressed parts are composed of two intermeshing rotors, designed to minimize vibration. The screw design leads to high efficiency and smooth air flow through the process of intake, compression and exhaust.
b. The equipment does not need to be manually lubricated.
c. The compressor's volume control system can easily perform partial load operation. The compressor can achieve 25%-100% sectional adjustment or non-sectional energy adjustment to be fully compatible with building loads.

Advantages
Moving components are only 1/4 of that of piston compressors. Vulnerable parts are minimized and the inhale and exhaust processes are smooth and continuous without pulse phenomenon. The equipment is not sensitive to wet compression and is highly resistant to strong liquid impact.

2. Shell and tube type heat exchanger
Shell: pressure vessels are constructed form high-quality steel plate. Its manufacture and testing meets JB/T4750-2003 ‘Pressure Vessel for Refrigeration Equipment' standards. Exterior surface features flame-retardant water-proof heat-insulation and preservation materials. The evaporator baffle plate adopts PVC engineering plastic which has excellent corrosion resistance and good air impermeability to make the cooling water flow upwards and downwards along the baffle plate. This improves the heat exchange capacity of the evaporator.

The refrigerant inlet is equipped with a flow-equalizing device in order to uniformly distribute the refrigerant in the heat exchanger's copper tube. This improves the heat exchange efficiency of the whole unit.

The DAC corrugated inner grooved heat exchange tube is made from copper, improving its efficiency. The power side heat exchange capacity for refrigerant improves the cooling and heating effects of the unit.

3. Expansion valve
The electronic expansion valve control system can reach a control accuracy up to 2600 steps. According to suction superheating and saturation pressure, combined with the electronic control system, we can precisely control the refrigerant flow, so as to ensure the unit is always in best running condition and the maximum capacity can be achieved. The adoption of highly efficient heat exchange tubes improves energy efficiency and effectiveness.

4. Distribution control cabinet
The distribution control cabinet is composed of compressor starting equipment, a power protector and a micro-computerized controller. The micro-computerized controller can run stably and safely under a temperature range of -15℃ to 65℃. It is equipped with a RS-232 and RS-485 standard communication interface. It can receive a remote signal for starting up and shutting down.

5. Safety equipment
High and low voltage switch, anti-freezing temperature control, lube oil heater, high-pressure exhaust check valve, replaceable filter element dry filter, piezometer, emergency stop switch, overload protector, power protector, refrigerant injector.

Inquiry Form