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Economic optimization and comparative study of solar heat pumps

机译：太阳能热泵的经济优化与比较研究

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In this paper, an economic study of solar heat pumps and an investigation of differences between solar heat pumps and conventional heat pumps—based on their performances and energy consumption—are conducted for a residential apartment located in Austin, Texas, USA. Heating in the apartment is provided via a solar heat pump during the cold months of a year. Solar collectors are used to meet the domestic hot water requirement of the apartment during the other months. In order to carry out a rational comparison, the base system comes with an air-to-air domestic heat pump and a boiler to provide domestic hot water. The comparison includes both energy consumption (fuel and power) and economic aspects. The simulation is performed through the commercial software TRNSYS, in which optimization offers a collectors’ surface of 28 square meters. The proposed configuration requires almost half of the electrical energy that the conventional system consumes. Its fuel consumption is about a quarter of the non-solar system, which offers a double value of COP in comparison with the traditional system. The economic calculations reveal that the payback period is about two years.
机译：本文对位于美国德克萨斯州奥斯汀的一栋住宅公寓进行了太阳能热泵的经济研究，并研究了太阳能热泵与传统热泵之间的区别（基于它们的性能和能耗）。在一年的寒冷月份，通过太阳能热泵为公寓提供暖气。太阳能收集器用于满足公寓其他月份的生活热水需求。为了进行合理的比较，基本系统配有空气对空气家用热泵和锅炉，以提供家用热水。比较包括能源消耗（燃料和动力）和经济方面。仿真是通过商用软件TRNSYS执行的，该软件的优化提供了28平方米的集热器表面。所提出的配置需要常规系统消耗的电能的几乎一半。它的燃料消耗约为非太阳能系统的四分之一，与传统系统相比，它的COP值是其两倍。经济计算表明，投资回收期约为两年。

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