Radiant Ceiling heat & ventilation

[yampajim]

My contractor want to use radiant ceiling tube heaters for bowling alley "common" area. I need to provide ventilation for fresh air & cooling. In the cold months the heaters will be on & so will the fresh air system. How much will this air movement mess the radiant ability to heat?

 

[SAK9]

Radiant heating,as the name indicates,relies on heat transmission through radiation.Radiation does not require a medium for transmission so the air distribution will not affect its performance.The tempered ventilation air quantity will not be substantial anyway

 

[ChrisConley]

Convection from air movement increases the ability of a hot (radiant) surfance to deliver, or remove, heat.

Generally speaking the air movement will increase the radiant's ability to heat the space.

 

[friartuck]

Are these gas fired radiant heaters or water tube . If so at what temperature.
Some gas radiant systems have no flue (a bit dodgy-applicable to the UK ) but if you ventilate the space to about 2AC (Don't quote me on that exact figure), then no flue is required.

I generally use flues and in addition, If I need fresh air, then this is tempered before supply to the space.

The heat output from a radiant panel is mostly radiant (depending on the surface temperature) Typically 90% radiant and 10% convective for the higher temperature models. If a 'draft' is incurred, then a greater output on the convective component will be realised...i.e. the heat output could go up slightly.

You should supply tempered air to offset the potential effect of cold drafts.

Friar Tuck of Sherwood