eQUEST Users,
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I m trying to model a building served mainly by the following systems
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1.?? Four ventilating air handlers condition all the entering outside air for the building to 72 degree F.
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2.?? Four air handling units with return fans (they all have cool-decks only, No Outside Air intakes) that circulate and condition the return air of the whole building to 55 degree F.
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Note: The 4 cool-deck-only air handling units don?t draw air straight off the ventilating air handling systems, instead they work in parallel.? The conditioned air off each of the cool-deck-only air handlers only gets mixed with the conditioned air off the ventilating air handler right before being discharged off each floor diffusers.
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3.???? The rest of the building air conditioning is done through the parameter 4-pipe fan coils system.
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The entire building?s cooling and heating demand relies on district chilled water and steam.
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Could you shed some light on how to model this system correctly??
My initial thought was to model it as an Induction Unit (an air handler + the 4 pipe fan coils system) with its outside air drawn from the dummy zone served by the Ventilating air handler. But in reality the cool-deck-only air handler doesn?t draw air straight off the ventilation air handlers.
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your suggestions and inputs are highly appreciated.
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Guo
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