HIGHER FLOW TEMPERATURE FOR FINER CHILLER CONTROL.

Britain's variable climate makes control of chillers much more difficult than in foreign parts. The swings in temperature and load follow no regular seasonal patterns, so more complicated modulation problems arise. For this reason this study recommends using the slightly higher than usual flow temperature of 7 degree C unless the more conventional 5. 5 degree C is important to maintain (in dewpoint plants). Raising the flow water temperature gives more control flexibility albeit at the expense of larger cooling coils, pipework and related equipment.