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Water Cooled Screw Chiller, 200kW~2200kW

Application

The water cooled screw chiller is designed and manufactured for cooling and heat recovery applications in large residential and commercial structures such as malls, office buildings, hotels, and hospitals.

Parameter
Cooling tower condition, R22 type water cooled screw chiller
Model 200W 240W 280W 320W 380W 460W 500W 580W 700W 820W 940W 1100W
Cooling capacity KW 198 246 281 317 379 452 503 577 704 817 934 1066
Input power KW 41 52 59 63 75 90 98 110 136 154 172 195
Power supply 380V / 3PH / 50HZ 380V / 3PH / 50HZ
Energy control 25% ~ 100% 25% ~ 100%
Compressor Type Semi Hermeic Screw Type Semi Hermeic Screw Type
Qty 1 1
Start model Y-△ Y-△
Refrigerant Type R22 /R407c R22 /R407c
Charge(kg) 34 49 56 60 62 74 81 92 111 128 145 164
Control EXV EXV
Evaporator Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 80 100 100 100 100 125 125 150
Water in/out temp. 12/7 12/7
Cooled water flow m³/h 33.4 42.3 48.3 54.5 65 77 86 99 121 140 161 183
Condenser Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 80 100 100 100 100 125 125 150
Water in/out temp. 30/35 30/35
Cooling water flow m³/h 41.7 51.3 58.5 66 78 93 103 118 145 167 190 217
Structure Vertical Vertical Horizontal
Dimension L mm 2500 2500 2500 3050 3050 3050 3050 3440 3440 3440 3440 3480
W mm 1120 1120 1120 1120 1120 1120 1120 1220 1340 1340 1340 1340
H mm 1920 1920 1920 1920 1920 2000 2000 1620 1650 1650 1650 1680
Net weight KG 1560 1650 1750 1750 1750 2370 2760 2880 3400 3500 3780 4250
Running weight KG 1660 1750 1870 1950 1950 2570 3000 3100 3700 3850 4050 4600
Protection measures 1.High &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. Safe valve; 10.Check valve

Notes:
1. Maximum bearing pressure at water side is 1MPa.
2. Both total and partial heat recovery are optional.
3. Different power supplies are optional.

Cooling tower condition, R134a type water cooled screw chiller
No. Model 200W 240W 280W 320W 380W 440W 500W 540W 680W 480W 560W 640W 760W 880W 1000W 1200W 1360W
Cooling capacity KW 196 243 271 310 373 430 493 540 685 486 535 621 746 850 986 1081 1371
Input power KW 44.6 53 59 67 79 87 98 108 134 105 119 133 158 175 196 216 267
Power supply 380V / 3PH / 50HZ 380V / 3PH / 50HZ
Energy control 25% ~ 100% 25% ~ 100%
Compressor Type Semi Hermeic Screw Type Semi Hermeic Screw Type
Qty 1 2
Start model Y-△ Y-△
Refrigerant Type R134a R134a
Charge(kg) 35 41 45 51 61 68 79 85 107 82 90 102 122 136 158 170 214
Control EXV EXV
Evaporator Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 100 100 100 100 100 100 125 125 150 125 125 150 150 150 150 200 200
Water in/out temp. 12/7 12/7
Cooled water flow m³/h 29.2 42 46 53 64 73 85 93 118 84 92 107 128 146 170 186 236
Condenser Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 100 100 100 100 100 100 125 125 150 125 125 150 150 150 150 200 200
Water in/out temp. 30/35 30/35
Cooling water flow m³/h 35.9 51 56 65 78 88 102 112 141 102 112 130 155 176 203 223 282
Structure Vertical Horizontal Vertical Horizontal
Dimension L mm 2500 3480 3480 3050 3480 3480 3480 3480 3480 4550 4550 4550 4550 4550 4550 4550 4550
W mm 1000 1300 1300 1150 1300 1340 1340 1340 1340 1200 1200 1200 1500 1500 1500 1500 1620
H mm 1600 1600 1600 1930 1600 1680 1680 1680 1680 2000 2100 2150 1770 1820 1850 1850 1920
Net weight KG 1650 1800 2450 2850 2950 3500 3600 3900 4360 4380 4580 4720 5380 5420 5920 6450 7150
Running weight KG 1850 1950 2600 3020 3120 3650 3750 4100 4560 4500 4800 4950 5620 5660 6220 6750 7500
Protection measures 1.High &low voltage protection; 2.Anti-freezing protection; 3.Temperature control; 4.Owe 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. Safe valve; 10.Check valve

Notes:
1. Maximum bearing pressure at water side is 1MPa.
2. Both total and partial heat recovery are optional.
3. Different power supplies are optional.

Cooling tower condition, Flooded R22 type water cooled screw chiller
No. Model 400W 500W 560W 640W 760W 920W 1100W 1200W 800W 1000W 1120W 1280W 1520W 1840W 2200W 2400W
Cooling capacity KW 402 487 561 637 747 910 1044 1190 804 974 1122 1274 1493 1820 2087 2381
Input power KW 74 87 98 114 128 155 175 197 149 174 196 228 256 311 349 394
Power supply 380V / 3PH / 50HZ 380V / 3PH / 50HZ
Energy control 25% ~ 100% 25% ~ 100%
Compressor Type Semi Hermeic Screw Type Semi Hermeic Screw Type
Qty 1 2
Start model Y-△ Y-△
Refrigerant Type R22 /R407c R22 /R407c
Charge(kg) 66 80 90 101 118 142 162 183 132 160 180 202 236 284 324 366
Control EXV EXV
Evaporator Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 100 100 125 125 150 150 150 150 150 150 150 200 200 200 250 250
Water in/out temp. 12/7 12/7
Cooled water flow m³/h 69 84 97 110 128 157 180 205 138 168 193 219 257 313 359 410
Condenser Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 100 100 125 125 150 150 150 150 150 150 150 200 200 200 250 250
Water in/out temp. 30/35 30/35
Cooling water flow m³/h 82 99 113 129 150 183 210 239 164 198 227 258 301 366 419 477
Structure Vertical Vertical
Dimension L mm 3400 3400 3400 3400 3400 3400 3400 3400 4100 4200 4200 4200 4460 4950 5150 5200
W mm 1320 1400 1400 1460 1650 1650 1720 1720 1500 1550 1550 1650 1750 1750 1750 1900
H mm 1650 1680 1680 1700 1810 1810 1850 1850 1820 1860 1860 1900 1970 1970 1970 2020
Net weight KG 1800 2450 2850 2950 3500 3600 3900 4360 4380 4580 4720 5380 5420 5920 6450 7150
Running weight KG 1950 2600 3020 3120 3650 3750 4100 4560 4500 4800 4950 5620 5660 6220 6750 7500
Protection measures 1.High &low voltage protection; 2.Anti-freezing protection; 3.Temperature control; 4.Owe 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. Safe valve; 10.Check valve

Notes:
1. Maximum bearing pressure at water side is 1MPa.
2. Both total and partial heat recovery are optional.
3. Different power supplies are optional.

Cooling tower condition, Flooded R134a type water cooled screw chiller
No. Model 260W 300W 340W 400W 460W 560W 600W 760W 520W 600W 680W 800W 920W 1120W 1200W 1520W
Cooling capacity KW 267 294 342 411 468 543 595 755 535 589 683 821 936 1086 1190 1510
Input power KW 52 59 66 78 87 97 107 132 104 118 132 156 173 194 214 265
Power supply 380V / 3PH / 50HZ 380V / 3PH / 50HZ
Energy control 25% ~ 100% 25% ~ 100%
Compressor Type Semi Hermeic Screw Type Semi Hermeic Screw Type
Qty 1 2
Start model Y-△ Y-△
Refrigerant Type R134a R134a
Charge 45 49 56 67 75 86 94 118 90 98 112 134 150 172 188 236
(kg)
Control EXV EXV
Evaporator Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 100 100 100 100 100 125 125 150 125 125 150 150 150 150 200 200
Water in/out temp. 12/7 12/7
Cooled water flow m³/h 46 51 59 71 81 93 102 130 92 101 118 141 161 187 205 260
Condenser Type Shell & Tube Shell & Tube
Pressure drop KPa 70 ~ 90 70 ~ 90
Pipe connection size (DN) 100 100 100 100 100 125 125 150 125 125 150 150 150 150 200 200
Water in/out temp. 30/35 30/35
Cooling water flow m³/h 55 61 70 84 95 110 121 153 110 122 140 168 191 220 242 305
Structure Vertical Vertical
Dimension L mm 3400 3400 3400 3400 3400 3400 3400 3400 4100 4200 4200 4200 4460 4950 5150 5200
W mm 1320 1400 1400 1460 1650 1650 1720 1720 1500 1550 1550 1650 1750 1750 1750 1900
H mm 1650 1680 1680 1700 1810 1810 1850 1850 1820 1860 1860 1900 1970 1970 1970 2020
Net weight KG 1800 2450 2850 2950 3500 3600 3900 4360 4380 4580 4720 5380 5420 5920 6450 7150
Running weight KG 1950 2600 3020 3120 3650 3750 4100 4560 4500 4800 4950 5620 5660 6220 6750 7500
Protection measures 1.High &low voltage protection; 2.Anti-freezing protection; 3.Temperature control; 4.Owe 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. Safe valve; 10.Check valve

Notes:
1. Maximum bearing pressure at water side is 1MPa.
2. Both total and partial heat recovery are optional.
3. Different power supplies are optional.

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. Micro-computerized controller
The cold water temperature can be set and displayed. Automatic energy control and startup and shutdown functions are available. The machine is operated through touch screen. The magnitude of the current (optional), running status, warning status and running time of compressor are displayed. The unit can automatically re-start after power recovery from power failure. Password protection function.

6. 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.

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