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why zone air temperature results do not agree with different thermostat schedules

asked 2022-02-04 13:28:28 -0600

Niu's avatar

updated 2022-02-04 14:08:07 -0600

I modelled a detached house, which has a gas-fired furnace warm air loop. I have set different heating thermostat schedules for different thermal zones. But the air temperature outputs can not agree with the thermostat schedules I set. I tried some setpoint managers. The results only agree with one of the thermal zone thermostat schedules. This is my air loop: image description Which setpoint manager should I choose for this condition? Or what other parameters I should change to make the air temperature results in the setting control band?

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answered 2022-02-08 16:22:35 -0600

It looks like you are using a single zone setpoint manager. If you select that object and look in the editor there is a field for control zone, which can only be one of your thermal zones, ideally the lone located where the thermostat will be. It looks like you are using constant volume air terminals without reheat, so the other zones have no way alter the amount of conditioning. Since external and possibly internal loads vary throughout time, there isn't a specific size of the terminals that will keep it balanced. If it is appropriate based on how these zones are connected, you could add in some air mixing objects between the zones.

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Asked: 2022-02-04 13:28:28 -0600

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Last updated: Feb 08 '22