Free Cooling Screw Chiller-Double Compressor

Products

description1
Zipper closure 1/5 zip athletic pullovers for men. Stretchy, lightweight, fast-drying fabric for superior performance. REGULAR FIT - US standard sizes. An athletic fit that sits close to the body for a wide range of motion, designed for optimal performance and all day comfort. FEATURES - Quarter zip closure;Thumbholes on long sleeves to keep them in place during workout
Features

    A free cooling chiller is a type of cooling system that utilizes ambient air temperature to provide cooling without the need for mechanical refrigeration.
    It works by drawing in cool outdoor air and using it to lower the temperature of the cooling medium, such as water or glycol, which is then circulated through the building or process equipment to remove heat.

     The key feature of a free cooling chiller is its ability to take advantage of the natural cooling capacity of the environment, reducing or eliminating the need for traditional mechanical cooling methods. This results in significant energy savings and lower operating costs.
    Free cooling chillers are commonly used in applications such as data centers, industrial processes, and commercial buildings with a year-round cooling load.



 Features of VENTTK Double Compressor Free Cooling Screw Chiller

1. Cooling capacity from 260~550kW, providing efficient cooling for various cooling loads.

2. Hanbell Screw compressor, ensuring efficient operation and long-lasting performance.

3.  Free cooling function can start at 0℃ or 5℃, when the outside temperature is within this range, the chiller can use the cool outdoor air to supplement or replace mechanical refrigeration, significantly reducing energy consumption.


Part List

No.

Name

Brand

Feature

1

Compressor

Hanbell

Semi enclosed screw type, efficient and reliable

2

Shell and tube heat exchanger

Saft

Efficient shell and tube heat exchanger (dry/falling film)
Uniform liquid separation and good oil return

Yinggu

3

Fin Heat Exchanger

Shenglin

Internally threaded copper tube, hydrophilic aluminum foil, high efficiency, and less prone to scaling

4

Electronic expansion valve

Sanhua

High precision, precise control, long lifespan, rapid adjustment, and sharp response

5

Pressure sensor

Sensata

Stable performance

Sanhua

6

Axial fan

Xingxin

Compact structure, low noise, high efficiency

Kemao

7

Safety valve

Castel

Stable quality, safe and reliable

8

Electric three-way valve

Johnson Controls

Low resistance and reliable action

9

Water pump
Optional

CNP

High efficiency and stable quality

10

Dry filter

Sanhua

High dryness, replaceable filter element

Dun An

11

Flow switch

Anchao

Stable quality and long lifecycle

Kaobo

12

Controller

Punp

Stable performance and reliable quality

Syslab

13

Contactor

Schneider

Stable performance and reliable quality

Siemens

14

Thermal relay

Schneider

Stable performance and reliable quality

Siemens

15

Circuit breaker

Schneider

Stable performance and reliable quality

Siemens

Technical Data
Model LSBLGFC***BGS 520  560  600  640  680  780  860  920 1100
Nominal
Cooling
Condition
Cooling Capacity kW 513 552 605 645 679 779 864 929 1087
USRT 146 157 172 183 193 222 246 264 309
kBtu/h 1750  1884  2063  2199  2316  2657  2948  3169  3707 
Cooling Input Power kW 172  193  206  212  227  256  286  308  361 
IDC Working
Condition
Cooling Capacity kW 513 552 605 645 679 779 864 929 1087
Free Cooling
5℃
Ambient Temperature 5℃
Cooling Capacity kW 359  387  605  645  679  779  864  929  1087 
Input Power kW 39.6  48.4  26.4  26.4  26.4  26.4  35.2  35.2  44.0 
Free Cooling
0℃
Ambient Temperature 0℃
Cooling Capacity kW 554  193  206  212  227  256  286  308  361 
Input Power kW 39.6  48.4  48.4  48.4  56.4  56.4  65.2  72.2  81.0 
Power Supply 3N~/380V/ 50Hz
Maximum Input Power kW 249  280  299  307  329  372  415  447  524 
Maximum Input Current A 431  485  518  532  570  644  719  774  907 
Compressor Model Semi Enclosed Screw Compressor
Quantity Unit 2
Start Mode Y-△
Energy Regulation 12.5%-100%
No. of Refrigerant Circulation Circuits 2
Evaporator Type Shell and Tube Heat Exchanger
Water Flow Rate m3/h 105.9  114.0  124.8  133.1  140.1  160.8  178.4  191.7  224.3 
IDC Water Side Pressure Drop kPa 160 160 160 160 160 160 160 160 160
Connecting Pipe Diameter DN 125 150 150 150 150 150 200 200 200
Fan Type Axial Fan
Quantity 12  12  12  12  12  16  16  20 
Total Air Volume m3/h 194960  209840  229840  244960  258000  296000  328400  352960  412960 
Fan Total Power kW 18  26  26  26  26  26  35  35  44 
Refrigerant Type R134a
Charge kg 165 178 195 208 219 251 278 299 350
Water Pump Input Power kW 22.0  22.0  22.0  22.0  30.0  30.0  30.0  37.0  37.0 
External Head m 27 26 25 25 29 27 25 27 25
Net Dimension L mm 5524 8216 8216 8216 8216 8216 10838 10838 13530
W mm 2260 2260 2260 2260 2260 2260 2260 2260 2260
H mm 2540 2540 2540 2540 2540 2540 2540 2540 2540
Net Weight kg 5600 6400 7200 7600 8100 8400 10200 11346 14146
Running Weight kg 5880 6720 7560 7980 8505 8820 10710 11913 14853

Notes:
1. The designed secondary refrigerant is 45% ethylene glycol, which meets the minimum environmental temperature of -30 ℃ for antifreeze requirements. If there are other operating parameters required, please contact us.
2. Nominal cooling condition: ambient temperature is 35℃,secondary refrigerant inlet/outlet temperature is 12/7℃.
   IDC cooling condition: secondary refrigerant inlet/outlet temperature is 15/10℃.
   Free cooling: secondary refrigerant inlet/outlet temperature is 15/10℃.
3. The maximum working pressure on the water side of the chiller is 1.0MPa, and the fouling coefficient is 0.018 m2 ℃/kW.
4. Applicable ambient temperature range:-30~46℃;
5. If there are changes due to improving product performance, please refer to the parameters on the nameplate of the chiller.