驱动风机所需要的能力几乎等于由热交换器所节省的能量，因此使热回收的效益被否定。
However, the energy required to power these fans almost equates to that saved by using heat exchangers, so negating the benefits.
人们在设计热交换器和分析热交换器的热性能时通常采用能量平衡的方法。
Heat balancing methods are generally used in design and analysis of heat exchangers.
接下来，温度极高的水被疏导至热交换器，将能量传输至第二套压力更低的管道。
The superheated water is then directed to a heat exchanger where it transfers its energy to a second set of lower-pressure pipes.
接下来，温度极高的水被疏导至热交换器，将能量传输至第二套压力更低的管道。
The superheated water is then directed to a heat exchanger where it transfers its energy to a second set of lower-pressure pipes.
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