PAHs are in car or bus exhaust and emissions from residential heating and power generation.

多环芳烃来自于汽车尾气以及住宅供暖和发电的排放。

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Heat metering and energy efficiency renovations on existing residential heating system in North China.

——北方采暖地区既有居住建筑供热计量及节能改造工作已经启动。

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The residential heating season is nearing its end, easing near-term demand for en plus grade pellets, which was pressuring industrial grade pellet availability.

住宅供暖季节即将结束，缓解了EN plus等级颗粒的短期需求，给工业颗粒带来了压力。

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The new analysis considers how micro-CHP could dramatically reduce household emissions in the UK by replacing condensing boilers in the residential heating sector.

FORBES: Micro-CHP Called 'Critical' to UK's Energy Future

Put another way, residential heating and air conditioning constitute 11.88 percent of the U.S. energy budget: cars only account for 8.9 percent. (see spread sheets 2.2 and 2.6) Worse, a good portion of that energy is wasted: lights get left on, air conditioners churn when you are on vacation, sleeping notebooks suck vampire power.

FORBES: Nest Labs: Can Apple Alums Make A Thermostat Hip?

In some instances, microCHP systems have attempted to use waste heat for residential space heating.

FORBES: Combined Heat and Computing: The Big Green Story for 2012?