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Ideal Load Air System

asked 2019-12-11 09:57:01 -0600

arnespandau gravatar image

Hello Users, I use IDF Editor for my building. I want to add an ZoneHVAC:IdealLoadAirSystem to one of the zones. This system is just for heating. The set temperature in the zone is 21°C. If the outside temperature is over 15°C the heater is off. I know how I have to define the schedules for the set temperature but what is the easiest way to add the shut down temperature of 15°C? Regards, Arne

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answered 2019-12-11 10:38:30 -0600

One option is to create an EMS program that actuates the Availability Schedule of the ideal air system. The EMS program should use a calling point that occurs early in the zone timestep, and would set the availability schedule to off or on based on the outdoor drybulb temperature (retrieved via an EMS sensor).

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Thanks for your answer! But is there a way to do that in the IDF Editor, without creating a program?

arnespandau gravatar image arnespandau  ( 2019-12-11 10:53:34 -0600 )edit

You could pre-process the weather file, find the hours where outside temperature is above 15C, and create a detailed ideal system availability schedule to reflect that.

shorowit gravatar image shorowit  ( 2019-12-11 11:00:26 -0600 )edit

Okay I thought there is maybe a easier way with less work.

arnespandau gravatar image arnespandau  ( 2019-12-11 11:03:50 -0600 )edit

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Asked: 2019-12-11 09:57:01 -0600

Seen: 256 times

Last updated: Dec 11 '19