以上海地区的气候条件和能源价格为基础，对燃气机热泵供暖的能耗和运行费用进行了分析比较。
Based on the climate and energy costs in Shanghai, energy consumption and running costs of the gas engine heat pump was analyzed and compared with electric heat pump.
本文以四台并联水泵为例，对各种运行方案的能耗进行了比较分析，所得结论对于这种调节方式的方案优化有一定的指导意义。
Using four parallel pump, this paper analysis and compare the energy consumption of various schemes, its conclusion is instructional in optimizing this regulation.
并结合工程实例对实际运行的冷水机组进行了现场测试，对添加前后系统的性能和能耗进行了比较分析。
The performance and energy consumption of the system before and after treatment are compared by a field test.
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