We waste huge amounts of gas or electricity, not to mention money and time, trying to get heat to do things it can't do.

我们为了使热能做它做不到的事情而浪费了大量的天然气和电能，更不用提金钱和时间了。

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A absorption automotive air conditioning system fed by waste heat of exhaust gas was raised, and the feasibility was discussed by analyzing the structure of the system and thermodynamics.

提出了一个利用尾气余热的吸收式汽车空调系统，通过热力学计算及结构分析指出了吸收式汽车空调系统的可行性。

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The tail gas outlet nozzle should be tangential to allow gravity flow of the sulfur form the waste heat boiler to the inlet channel of the downstream sulfur condenser.

尾气出口喷嘴宜为正切向，从而使的来自余热锅炉硫的重力流流入下游硫冷凝器的入口通道。

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But in certain landfills, including some accepting the BP cleanup, waste,heat and methane gas produced by decomposition are being used to generate energy.

VOA: standard.2010.08.05

Another technology it is looking at: a small gasifier that will heat woody waste to create natural gas.

FORBES: Technology

It develops anaerobic digesters that convert organic waste into biogas used to generate electricity, heat, natural gas and motor vehicle fuel (CNG). quasar already operates eight facilities in Ohio, and several more are in process in the Buckeye State and elsewhere.

FORBES: The Smart Business of Advanced Energy

Interestingly, the technology exists to modify that waste heat a tool that could gain ever-increasing credence if natural gas and coal prices turn volatile.

FORBES: Recycling Wasted Heat and Power Could Clear the Air