国内对矿井水源热泵的研究尚处于起步阶段，对矿井回风废热的利用未见有报道。
The study of mine water source heat pump is still in its infancy domestic, and there was no report of the use of mine waste heat back to the wind.
1993年时，该市开始利用和燃烧当地的废木料，到了1999年，开始依靠新型沼气厂生成的热来供暖。
By 1993, it was taking in and burning local wood wastes, and in 1999, it began relying on heat generated from the new biogas plant.
在工业过程中，回收利用从锅炉和大型制冷设备来的废热，能减少其他地方的取暖成本。
In industrial Settings, waste heat from boilers and large refrigeration units is sometimes recycled to reduce heating costs elsewhere.
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