Water Cooled Water Chiller

Product Description

Semi hermetic screw compressor with in-built motor.

Refrig : R-134A (CFC Free),R- 407C (CFC Free), R-22 (Freon).

Liquid Temperatures - Minus 15 to Plus 25 deg C.

Available with choice of emerson,danfoss & bitzer..

HIMALAYA’S water cooled chillers are Designed to work in hostile industrial environment, himalaya chillers are appreciably reducing costs in a broad range of industries. Our Chillers for process cooling and equipment cooling enhance production processes and lower operating costs.

Functions and Features:

CHOICE OF SCREW COMPRESSOR of emerson (u.s.a), danfoss (Denmark) , Bitzer (Germany).All options are semi-hermetic in construction, thereby making them maintenance friendly. Due to geometrically symmetrical moving parts, they have extremely low vibration and are tested in accordance with AHRI/European Standards. These screw compressors come with an in-built oil separation system and an additional external oil separator can be added depending upon the nature of industrial application. Oil level switch, CCH heaterand economiser port are provided as standard part of the OEM supply along with check valves at suction and discharge port.

HIGH COPPER as a result efficient condensing of the refrigerant.. Since the condensers are generously oversized, efficient condensing of the refrigerant leads to lower IKW.

SHELL & TUBE EVAPORATOR is built with copper tubes of 19 SWG that enables them to withstand hard water with PH greater than 8. The copper tubes contain Flamingo patented star turbulator inserts that provide turbulence to the refrigerant flowing through the copper tubes. As a result of this turbulence these Shell & Tube evaporators have extremely efficient heat transfer with the copper tube. The shell is manufactured from high-grade steel. The evaporator is designed as per ASME Section VIII Div.1.

ULTRA EFFICIENT CONDENSING using outer finned copper tubes results in efficient heat transfer as it increasesthe surface area of the copper tube in comparison to copper tubes without finning. The copper tubes are of 16 SWG and are finned on the outer surface for up to 26 fins per inch. The copper tubes are mechanically expanded in a torque controlled process on tube sheets that are manufactured on imported VMC machine. Since the tube sheets are manufactured on VMC machines the pitch between copper tubes is precise.

ECONOMIZER FOR HIGHER EFFICIENCY is provided as per refrigerant used and depending upon the chilled water/brine temperature range desired. Economiser is provided as standard part of supply in process chillers opted for evaporating temperature of 5 deg. C or lower. The economizer/sub-cooler enhances the overall capacity of the chiller by 10%, and reduces the power consumption, thereby increasing the overall Coefficient of Performance (COP).

AVAILABLE IN A CHOICE OF REFRIGERANTS R-22 (Freon), R-407C and R-134a. Both R-407C and R-134A are environment friendly and non-ozone depleting refrigerants.

ADDITONAL AIR COOLED TYPE OIL COOLER is added depending upon the refrigerant used and the chilled water/brine temperature desired. The oil cooler helps maintain the oil temperatures flowing through the compressor within safe limits. The oil cooler fan is automatically controlled depending on the oil temperature. This feature enhances the screw compressor life.

LIQUID INJECTION is a standard feature and is used to cool the compressor motor winding. As soon as the discharge temperature exceeds the normal range, an electric solenoid coil injects liquid refrigerant to keep the winding temperature within limits. This feature enhances the life of the screw compressor.

THERMOSTATIC EXPANSION VALVE is provided as a standard part of the water cooled screw chiller equipment. Electronic expansion valve can also be optionally provided.

CONTROL PANEL with IP-65 protection is provided as standard part of the water cooled equipment.

MICROPROCESSOR BASED CONTROLLER is a standard part of the water cooled screw chiller equipment. The controller allows numerous set points that can be configured to particular set of values that may be considered within the safe operating range. In case of any breach in any of the set point value the controller will trip the chiller after the fed safety delay period has passed and display it on the LCD display. Besides, the controller automatically adjusts the capacity in a stepped format making them ideal for variable load applications.

Optional Features:

CHOICE OF ELECTRONIC EXPANSION VALVE allows for precise control of refrigerant flow through the evaporator. The electronic expansion valve is very sensitive to load variations and adjusts the flow of refrigerant with short response times to achieve power savings.

MAGNUM STEP-LESS CAPACITY CONTROLER makes the chiller highly efficient in part load conditions as itadjusts the capacity steplessly (25%~100%). Besides the Magnum controller allows direct communication through RS-485 to MODBUS and can be easily integrated to most BMS systems (Building Management Systems) available in the market.

SOFT STARTER providessmooth acceleration as voltage or current is applied gradually. Besides Soft starters also stop the motor gradually as opposed to sudden jerk experienced in DOL or Star Delta type starter panels. This additional feature increases the compressor bearing life.

INDIVIDUALY CUSTOMISED solutions are also available for direct expansion options.

LOAD CALCULLATION FOR WATER CHILLER:

Single / Multiple compressor chiller:

  • P and I – 1
  • P and I – 1
  • Load calculation
  • Q = m x Cp x ∆T
  • Q = Heat load in kcal/hr
  • m = mass flow rate of water in kg/hr
  • Cp = Specific heat of water in kcal/kg0C

 

  • ∆T = Temperature difference between inlet and outlet in 0C Conversions
  • 1 TR = 3000 kcal/hr
  • 1 kW = 860 kcal/hr
  • 1 kcal/hr = 4 BTU/hr
  • 1 cu.m/hr = 1000 liter / hr
  • 1 bar = 14.5 psi = 1 kg/sq.cm = 10 m (head)

MODEL

COOLING CAPACITY

POWER

INPUT

TYPE

REFRI

GERANT

DIMENSION IN MM

WIDTH

DEPTH

HEIGHT

HR-WCHILL-95-ST

27TR

95.3 KW/H

22.80Kw/H ,415 v ac, 3 Ph , 50 Hz

RE-CIRCULATING TYPE(AIR COOLED)

R22

R407

HR-WCHILL-98 -ST

28TR

98KW/H

33.26 Kw/H ,415 v ac, 3 Ph , 50 Hz

RE-CIRCULATING TYPE(AIR COOLED)

R22

R407

HR-WCHILL-147-ST

42TR

147KW/H

31.9Kw/H ,415 v ac, 3 Ph , 50 Hz

RE-CIRCULATING TYPE(AIR COOLED)

R22

R407

Drawing:

water-chiller
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