Airedale Ultima Water Cooled 75kW - 450kW - Manual (Page 17)

Chillers ULTIMA WATER COOLED
Chillers
17
Technical Manual : Part No 6259477 V1.4.0_07_2014
Performance Data
All performance data is supplied in accordance with BS EN 14511-1:2013
OPERATING LIMITS
(For 100% Water)
Condenser Minimum Leaving Water Temperature °C
+25°C
Condenser Maximum Return Water Temperature °C +45°C
Evaporator Minimum Leaving Water Temperature °C +5°C
Evaporator Maximum Return Water Temperature °C +20°C
1 Temperatures lower than those stated can be obtained with the addition of glycol.
2 For conditions outside those quoted, please refer to Airedale.
GLYCOL DATA Glycol is recommended when a supply water temperature of +5°C or below is required or
when static water can be exposed to freezing temperatures.
Ethylene Glycol Nominal Correction Factors
Glycol in System / Freezing
Point ºC
10% / -4°C 20% / -9°C 30% / -15°C 40% / -23°C
Cooling Duty
x by
0.98 0.97 0.95 0.93
Input Power 0.99 0.98 0.96 0.95
Water Flow 0.99 1.02 1.04 1.07
Pressure Drop 1.05 1.20 1.38 1.57
Propylene Glycol Nominal Correction Factors
Glycol in System / Freezing
Point ºC
10% / -2°C 20% / -6°C 30% / -12°C 40% / -20°C
Cooling Duty
x by
0.97 0.95 0.91 0.88
Input Power 0.99 0.98 0.96 0.95
Water Flow 0.98 0.97 0.95 0.95
Pressure Drop 1.08 1.17 1.31 1.45