Chilled-Water System Chilled-water systems formulas - evaporator and condenser flow rates Sponsored Links
In a chilled-water system the air conditioner cools water down to 40 - 45oF (4 - 7oC). The chilled water is distributed throughout the building in a piping system and connected to air condition cooling units wherever needed.
Total Heat Removed The total heat removed by air condition chilled-water installation can be expressed as h = 500 q dt
(1)
where h = total heat removed (Btu/h) q = water flow rate (gal/min) dt = temperature difference (oF)
Evaporator Flow Rate The evaporator water flow rate can be expressed as qe = htons 24 / dt
(2)
where qe = evaporator water flow rate (gal/min) htons = air condition cooling load (tons)
Condenser Flow Rate The condenser water flow rate can be expressed as qc = htons 30 / dt
(3)
where qc = condenser water flow rate (gal/min) htons = air condition cooling load, chiller tonnage(tons)