Condenser Selection

Selection Factors

There are five factors that are required to enable the selection of a suitable condenser:

1) Refrigerant type

2) Application (low, medium or high temperature)

3) Total heat rejection

4) Condensing temperature

5) Entering water temperature

Selection Procedure

1)	Determine system compressor capacity at the design conditions.
2)	Refer to hermetic compressor power curve chart or open compressor power curve chart to find the total heat rejection factor.
3)	Multiply the compressor capacity by the total heat rejection factor to obtain the THR.
4)	Air conditioning applications - use the THR as above.
	Medium temperature refrigeration applications - use the following formula: Compressor capacity x THR factor x 1.05 = THR
	Low temperature applications - use the following formula: Compressor capacity at design suction and condensing temperature x THR factor x 1.10 = THR

Condenser Approach Temperature
Metric Measurement
Note: The approach temperature is the difference between the condensing temperature and the leaving water temperature.

Model S-2 S-2R CN2 Parallel Flow

Model S-2 S-2R CN2 Series Flow

Model S-2
S-2R CN2 Parallel Flow Model S-2 S-2R
CN2 Series Flow

Model S-3 S-3R CN3 Parallel Flow

Model S-3 S-3R CN3 Series Flow

Model S-3 S-3R
CN3 Series Flow

Water flow based on water entering at 30° C and 42° C condensing temperature
Average water temperature rise 9K

In the interest of continuous product improvement, specifications or performance data may change without notice.

Metric Measurement (U.S. Standard Measurement on page 7)

Model S-4 S-4R CN4 Parallel Flow

Model S-4 S-4R CN4 Series Flow

Model S-4
S-4R CN4 Parallel Flow Model S-4 S-4R
CN4 Series Flow

Model S-5 S-5R CN5 Parallel Flow

Model S-6 S-6R CN6 Parallel Flow

Model S-6
S-6R CN6 Parallel Flow

Water flow based on water entering at 30° C and 42° C condensing temperature
Average water temperature rise 9K

Note: The approach temperature is the difference between the condensing temperature and the leaving water temperature.

Metric Measurement (U.S. Standard Measurement on page 7)

Evaporator Performance Data

Evaporator
Performance Data

Application.
The curves shown are for fresh water cooling duties with water leaving temperatures between 2°C and 10°C. Entering liquid refrigerant temperature at T.X. valve 32°C. Suction superheat 5K.
Approach Temperature.
The approach temperature is the difference between the refrigerant evaporating temperature and leaving water temperature.
Water Temperature Drop.
Water temperature drop will vary with flow rate. The curves opposite are for average Temperature Drop of 5°C at the design conditions. During pull down the temperature drop through the evaporator will vary.
Installation.
The "S" series evaporators are counterflow water to refrigerant. They should be adequately vapor sealed and thermally insulated to prevent condensation or ice forming on the evaporator shell or performance will be affected.
Equipment Selection.
When selecting compressor, use Suction Temperature 3K below evaporating temperature to allow for suction line Pressure Drop and 5K when suction accumulator is not used.