Jeff, that's been bugging me for a while...most equipment is specified at a "rated" condition. Take a fan for example: the controller will accept a value greater than 1. I assumed 1 is the fan flow at rated pressure and efficiency. less than 1 and greater than one will ride the fan curve defined by the fan coefficients to deturmine the power draw at flowrates=ratedflowrate*control signal. I expect pumps to work the same and for that matter most equipment. The term "maximum" could possibly be "rated maximum". coils should be no exception. How far a system is allowed to exceed rated maximums should be known to the engineer. I allow my fans to go at 1.3 of max rated flow, but design the system to work at 1. is this understanding of Trnsys models correct? regards jean Sent from my iPhone
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