Residual heat from the air inside the trailer, and heat in the insulation and inner lining of the trailer.

拖车里的空气所带来的余热，以及拖车里的绝缘层和内衬里的热量。

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It is dependent on the temperature differential between the inside and outside air, type and thickness of insulation, and the area of the conducting surfaces.

这个主要取决于内外空气的温度差、绝缘层的类型和厚度以及传导面的面积。

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With the advent in the 1970s of much better insulation of buildings, coupled with far fewer air exchanges per hour, so-called "tight building" or "sick building" syndrome can occur.

随着70年代更好的绝缘房屋的出现，房屋每小时空气交换更少，于是我们称为“紧致住房”或“疾病住房”综合症的疾病可能出现。

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The second generation moved into manufacturing truck bodies, industrial insulation materials and air conditioners (in partnership with Fedders Corp.).

FORBES: Pipe Dreams

Other resource-efficient projects like New York's 4 Times Square office building, Atlanta's EarthCraft House and Village Habitat Design's cohousing conservation communities include such innovations as energy-efficient insulation, water and air filtration, or hydronic heating, aiming for healthy, nontoxic construction processes and buildings for humans and the environment.

CNN: Developer advocates 'spiritual' approach to building

The 12, 700-square-foot Energy Star-certified house was crafted from low-toxic materials, withstood air tightness tests on the insulation, and has a water furnace geothermal system that provides hot water, radiant floor heat and air conditioning.

FORBES: Off-The-Grid Mansions