About Factory:
Shandong Tianqu Cooling Technology Co., Ltd, was originated from LARK Central Air Conditioning, which is founded in 2007 and one of the major manufacturer for central air conditioning products.
We are professional on R&D, production, project design and installation, after sales service. Totally covering 260,000 square meters, investing 360 million RMB, owning high qualified machines from Germany and Japan to ensure high level products.
We take care of every section of process and service for clients. Qualified products are produced according to ISO 9001:2000 and ISO14001:2004, , we flexibly provides wide range of Packaged rooftop Units, High Pressure Duct type, Condensing Units, Mini Chillers, Modular Chillers, Air Cooled Screw Chillers, Water Cooled Screw Chillers, Water Source Heat Pump, Water Cooled Packaged Units, Fan Coils, AHUs, HRVs and etc. Our market is based in China, and we have sold to Europe, America, Africa, Middle East, Australia, Asia and etc. Our products have been sold to over 90 countries.
Besides previously Lark brand, now we also have one new brand-Top Air.
Top Air, it is your top choice on HVAC products!
About Water Cooled Screw Chiller:
Served Areas:
Hotel,
Apartment,
Villa,
Factory,
Shopping Center,
Office building,
School and etc.
Features:
• 17 sizes available ranging from 150kW to 1274kW cooling capacity.
• Reusable: using solar energy stored in earth as cooling and heating source.
• Great environmental and economic benefit: no boiler or cooling tower; less space; less CO2 and less initial investment.
• Acting as multi-function unit such as cooling, heating, sanitary hot water separately or simultaneously.
• Wide application as hotel, apartment, villa, factory, shopping center, office building, school, etc.
• Hermetic scroll compressor and semi-hermetic screw compressor, each compressor is equipped with a crankcase heater and a thermal overload cut-out; the screw compressor is also complete with a built-in electronic protection with temperature sensor located directly in the motor winding and on the discharge line.
• The refrigerant circuit is complete with sight glass, filter drier, high and low pressure gauges, solenoid valve, direct expansion valve, high and low pressure switch.
• Shell and tube dry expansion type condenser, factory insulated with flexible close cell material.
• The electric panel consists of compressor breaker, compressor contactor, phase sequence relay, control circuit breaker, microprocessor control with function display.
• LCD display, touch screen control panel as standard.
•Automatic operation dramatically reducing maintenance cost thanks to reliable microprocessor system.
• For the units with semi-hermetic screw compressor, an infinitely variable capacity control system that is capable of exactly matching the requirement of the system. This system is to provide precise and stable control of supply water temperature over the complete range of operating conditions.
Detailed Specifications:
Product Type |
LDY150 |
LDY180 |
LDY200 |
LDY240 |
LDY300 |
Rated cooling capacity |
kW/Btu/h |
150 |
511950 |
180 |
614340 |
193 |
658709 |
237 |
808881 |
288 |
982944 |
Rated heating capacity |
kW/Btu/h |
191 |
651883 |
228 |
778164 |
224 |
764512 |
274 |
935162 |
333 |
1136529 |
Compressor |
Cooling input Power |
kW |
28.8 |
34.2 |
36.2 |
44.2 |
54 |
Heating input Power |
kW |
42.6 |
50.6 |
47.2 |
57.6 |
70.4 |
Type |
|
Scroll |
Semi-hermetic Screw Compressor |
Amount |
|
2 |
2 |
1 |
1 |
1 |
Power Supply |
V/PH/Hz |
380/3/50 |
Refrigerant |
Type |
|
R22 |
Quantity |
Kg |
30 |
36 |
40 |
49 |
59 |
Control method |
|
Electronic Expansion Valve |
Condenser |
Water flow |
m3/h |
14 |
16.7 |
17.9 |
22 |
26.7 |
Type |
|
Shell and Tube Heat Exchanger |
Pressure drop |
kPa |
50 |
50 |
45 |
45 |
45 |
Water content |
DN |
80 |
80 |
80 |
100 |
100 |
Evaporator |
Water flow |
m3/h |
25.8 |
31 |
33.2 |
40.8 |
49.5 |
Type |
|
Shell and Tube Heat Exchanger |
Pressure drop |
kPa |
50 |
50 |
45 |
45 |
45 |
Water content |
DN |
80 |
80 |
80 |
100 |
100 |
Noise |
dB(A) |
68 |
68 |
69 |
69 |
70 |
Dimension (L×W×H) |
mm |
3020×800×1450 |
3100×950×1450 |
2900×1050×1520 |
2950×1050×1520 |
2880×1200×1600 |
Weight |
Kg |
1550 |
1620 |
1700 |
1800 |
2100 |
Product Type |
LDY380 |
LDY420 |
LDY500 |
LDY600 |
LDY710 |
LDY770 |
Rated cooling capacity |
kW/Btu/h |
372 |
1269636 |
418 |
1426634 |
492 |
1679196 |
592 |
2020496 |
697 |
2378861 |
752 |
2566576 |
Rated heating capacity |
kW/Btu/h |
429 |
1464177 |
471 |
1607523 |
566 |
1931758 |
679 |
2317427 |
798 |
2723574 |
858 |
2928354 |
Compressor |
Cooling input Power |
kW |
69.2 |
75.4 |
90 |
106.5 |
124.9 |
132.5 |
Heating input Power |
kW |
90.2 |
98.4 |
117.4 |
138.8 |
162.8 |
172.8 |
Type |
|
Semi-hermetic Screw Compressor |
Amount |
|
1 |
1 |
1 |
1 |
1 |
1 |
Power Supply |
V/PH/Hz |
380/3/50 |
Refrigerant |
Type |
|
R22 |
Quantity |
Kg |
77 |
84 |
101 |
122 |
144 |
155 |
Control method |
|
Electronic Expansion Valve |
Condenser |
Water flow |
m3/h |
34.5 |
37.8 |
45.5 |
54.6 |
64.3 |
69.2 |
Type |
|
Shell and Tube Heat Exchanger |
Pressure drop |
kPa |
45 |
45 |
46 |
47 |
47 |
48 |
Water content |
DN |
100 |
100 |
100 |
125 |
100 |
150 |
Evaporator |
Water flow |
m3/h |
64 |
70.2 |
84.6 |
101.8 |
119.9 |
129.3 |
Type |
|
Shell and Tube Heat Exchanger |
Pressure drop |
kPa |
45 |
45 |
46 |
47 |
47 |
48 |
Water content |
DN |
100 |
100 |
100 |
125 |
125 |
150 |
Noise |
dB(A) |
70 |
70 |
71 |
72 |
73 |
73 |
Dimension (L×W×H) |
mm |
3000×1200×1600 |
3020×1220×1650 |
3100×1300×1750 |
3600×1310×1850 |
3450×1350×1850 |
3500×1350×1900 |
Weight |
Kg |
2500 |
2650 |
2800 |
3500 |
3750 |
3820 |
Product Type |
LDY900 |
LDY950 |
LDY1030 |
LDY1130 |
LDY1200 |
LDY1300 |
Rated cooling capacity |
kW/Btu/h |
881 |
3006853 |
928 |
3167264 |
1012 |
3453956 |
1112 |
3795256 |
1184 |
4040992 |
1274 |
4348162 |
Rated heating capacity |
kW/Btu/h |
1000 |
3413000 |
1067 |
3641671 |
1162 |
3965906 |
1275 |
4351575 |
1358 |
4634854 |
1460 |
4982980 |
Compressor |
Cooling input Power |
kW |
151.3 |
169 |
183.6 |
200.1 |
213 |
228.6 |
Heating input Power |
kW |
197.3 |
221 |
239.5 |
260.9 |
277.6 |
298 |
Type |
|
Semi-hermetic Screw Compressor |
Amount |
|
1 |
2 |
2 |
2 |
2 |
2 |
Power Supply |
V/PH/Hz |
380/3/50 |
Refrigerant |
Type |
|
R22 |
Quantity |
Kg |
182 |
192 |
209 |
230 |
245 |
254 |
Control method |
|
Electronic Expansion Valve |
Condenser |
Water flow |
m3/h |
80.7 |
85.8 |
93.5 |
102.6 |
109.2 |
113.3 |
Type |
|
Shell and Tube Heat Exchanger |
Pressure drop |
kPa |
48 |
49 |
49 |
49 |
49 |
50 |
Water content |
DN |
150 |
150 |
150 |
150 |
150 |
150 |
Evaporator |
Water flow |
m3/h |
151.5 |
159.6 |
174.1 |
191.3 |
203.6 |
211.4 |
Type |
|
Shell and Tube Heat Exchanger |
Pressure drop |
kPa |
48 |
49 |
49 |
49 |
49 |
50 |
Water content |
DN |
150 |
150 |
150 |
150 |
150 |
150 |
Noise |
dB(A) |
73 |
74 |
74 |
74 |
74 |
75 |
Dimension (L×W×H) |
mm |
3600×1380×1990 |
3860×1395×2020 |
4160×1395×2020 |
4250×1395×2020 |
4360×1395×2020 |
4320×1460×2035 |
Weight |
Kg |
3880 |
3890 |
4210 |
4520 |
4720 |
6200 |
Performance values refer to the following conditions:
*Cooling capacity is measured under the condition : Source side water inlet/outlet temperature 18ºC/ 29ºC ,user side water inlet/outlet temperature 12ºC/ 7ºC
*Heating capacity is measured under the condition : Source side water inlet temperature 15ºC ,user side water inlet temperature 40ºC
More photos about our factory.




