Water cooled chillers cool by the circulation of water and refrigerant through coaxial tubing. The innermost tube contains the refrigerant while the surrounding outer tube contains the water. As the system circulates, the water in the outer tube condenses the refrigerant in the inner tube, the refrigerant then flows through the evaporator. This condensation process cools the liquid in the evaporator. The cooled liquid flows to the reservoir tank. The system is closed so less heat is dissipated into ambient air. Water cooled chillers are quiet and reliable, they are also energy efficient. Water cooled chillers require a substantial water source and system of pumps, piping and fans. As the system tonnage rises the merit of a water cooled chiller increases.

 

Water-Cooled 18 to 25 HP Specifications

Model
DCW1800
DCW2000
DCW2300
DCW2500
Compressor
Nom. HP
18 (2@9)
20 (2@10)
23 (10+13)
25 (12+13)
Cooling Capacity (1)
Tons
Watts
BTU/hr
17.45
61,353
209,400
19.70
69,264
236,400
22.60
79,530
271,200
24.50
86,217
294,000
Nominal Evaporator Flow (2)
USGPM
43.3
49.7
56.6
62.6
Pressure (3)
PSIG
45
53.5
59
63.5
Pump Horsepower
HP
3
5
5
7.5
Water Condenser Flow-Tower Water
USGPM
53.2
61.0
69.0
75.0
Water Condenser Connections
Inches
2
2
2
2
Process Connections (to & from)
Inches
2

2
2
2
Resivoir Tank Capacity
US Gallons
100
100
100
100
Dimensions (d x w x h)
Inches
97 x 44 x 48
97 x 44 x 48
97 x 44 x 48
97 x 44 x 48
Shipping Weight
Pounds
1,810
1,815
1,965
2,015
Temperature Range
ºF
ºC
32ºF - 86ºF
0ºC - 30ºC
32ºF - 86ºF
0ºC - 30ºC
32ºF - 86ºF
0ºC - 30ºC
32ºF - 86ºF
0ºC - 30ºC
Temperature Stability

ºF
ºC

± 2ºF
± 1.11ºC
± 2ºF
± 1.11ºC
± 2ºF
± 1.11ºC
± 2ºF
± 1.11ºC
Nominal Rated Amps
460V/3/60
41.0
43.9
51.0
55.0
230V/3/60
82.0
90.7
-
-

Notes:
(1) Capacity based on 95ºF (35ºC) entering air, and leaving water 50 ºF. Allowance made for heat gain from pump.
(2) Chiller flow rate based on 2.4 USGPM/ton (0.54 cu. Meters/hr/ton).
(3) Pumps: Stainless Steel Centrifugal