...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >Solar-assisted heat pump - A sustainable system for low-temperature water heating applications
【24h】

Solar-assisted heat pump - A sustainable system for low-temperature water heating applications

机译：太阳能辅助热泵-低温热水应用的可持续系统

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Direct expansion solar assisted heat pump systems (DX-SAHP) have been widely used in many applications including water heating. In the DX-SAHP systems the solar collector and the heat pump evaporator are integrated into a single unit in order to transfer the solar energy to the refrigerant. The present work is aimed at studying the use of the DX-SAHP for low temperature water heating applications. The novel aspect of this paper involves a detailed long-term thermo-economic analysis of the energy conservation potential and economic viability of these systems. The thermal performance is simulated using a computer program that incorporates location dependent radiation, collector, economic, heat pump and load data. The economic analysis is performed using the life cycle cost (LCC) method. Results indicate that the DX-SAHP water heaters systems when compared to the conventional electrical water heaters are both economical as well as energy conserving. The analysis also reveals that the minimum value of the system life cycle cost is achieved at optimal values of the solar collector area as well as the compressor displacement capacity. Since the cost of SAHP system presents a barrier to mass scale commercialization, the results of the present study indicating that the SAHP life cycle cost can be minimized by optimizing the collector area would certainly be helpful in lowering, if not eliminating, the economic barrier to these systems. Also, at load temperatures higher than 70 ℃, the performance of the single stage heat pump degrades to the extent that its cost and efficiency advantages over the electric only system are lost.
机译：直接膨胀太阳能辅助热泵系统（DX-SAHP）已广泛用于包括水加热在内的许多应用中。在DX-SAHP系统中，太阳能收集器和热泵蒸发器集成在一个单元中，以便将太阳能传递给制冷剂。目前的工作旨在研究DX-SAHP在低温热水应用中的使用。本文的新颖之处在于对这些系统的节能潜力和经济可行性进行详细的长期热经济分析。使用计算机程序模拟热性能，该计算机程序结合了位置相关的辐射，收集器，经济，热泵和负载数据。使用生命周期成本（LCC）方法进行经济分析。结果表明，与传统的电热水器相比，DX-SAHP热水器系统既经济又节能。分析还表明，在最佳的太阳能收集器面积以及压缩机排量的情况下，可以达到系统生命周期成本的最小值。由于SAHP系统的成本构成了大规模商业化的障碍，因此本研究的结果表明，可以通过优化收集器面积来最大程度地降低SAHP生命周期成本，这将有助于降低（如果不能消除的话）经济障碍。这些系统。同样，在高于70℃的负载温度下，单级热泵的性能会降低到一定程度，从而使其成本和效率优于纯电动系统。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号