28 Dec '14, 8pm

Exploring some low-cost options for keeping an attached garage comfortable for both people and vegetables

Exploring some low-cost options for keeping an attached garage comfortable for both people and vegetables

Jeffery is actually asking for two types of heating: background, steady heat for perishables and intermittent task heating. That is a bit of a tall order. Fast-acting radiant systems are well-suited for the latter because thermal comfort is based largely on the operative temperature In determining thermal comfort, operative temperature is roughly the average of the air and mean radiant temperature (MRT) a person is experiencing. (about 50% contribution from air temperature and 50% from mean radiant temperature Mean radiant temperature (MRT) is roughly the average temperature of all the objects or surfaces that a person "sees" inside a building, with the surface temperatures being weighted by their area. A surface or object's contribution to MRT is also based on its temperature in comparison to the person (temperature difference or differential) and the viewing angle betwee...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/qa-spotlig...

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