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随着NH3/CO2复叠式制冷系统的应用,开发高效冷凝蒸发器来提高系统的性能是必要手段。对一种新型NH3/CO2冷凝蒸发器进行实验研究得出:不同制冷工况下,不同的换热温差,测试出相对应的传热系数,对比分析出不同布管形式对传热系数、换热温差、热流密度等的影响,从而得出最优的布管方式,为高效冷凝蒸发器的开发和设计奠定了基础。
With the application of the NH3 / CO2 cascade refrigeration system, it is necessary to develop an efficient condensing evaporator to improve the system performance. An experimental study of a new type of NH3 / CO2 condenser evaporator shows that: under different refrigeration conditions, different heat transfer temperature differences, the corresponding heat transfer coefficient is tested, the heat transfer coefficient of different pipe forms is compared and analyzed, Heat temperature difference, heat flux density and other effects, so as to draw the optimal method of pipe laying, laying a foundation for the development and design of highly efficient condensing evaporator.