日光温室空气-土壤源双效热泵系统设计与性能测试

发布时间：2018-04-22 16:10

  本文选题：空气源热泵 + 土壤源热泵　； 参考：《农业机械学报》2017年11期

【摘要】：为探索一种节能高效的日光温室热环境调控模式,基于热泵技术,设计搭建了一种空气-土壤源双效热泵系统,并对系统性能进行了测试分析。该系统将空气、土壤2种不同热源热泵有效复合,采用串联板式换热模式,通过温控器和电磁阀可实现4种供热模式:空气源热泵单板换热模式、空气源热泵双板换热模式、土壤源热泵单板换热模式和土壤源热泵双板换热模式。通过日光温室供暖水箱加温测试,分析双效热泵系统在不同模式下的性能系数(COP)和节能效果。春季测试期间,空气源单板换热模式下热泵COP平均值为2.1,双板换热模式下热泵COP平均值为3.1,与温室燃煤加温锅炉相比平均节能50.4%;土壤源单板换热模式下平均性能系数为2.2,双板换热模式下平均性能系数为2.3。冬季测试期间,典型晴天里空气源热泵双板换热模式可有效提升温室模型内气温,与室外气温相比平均提升15.7℃。测试结果显示,相同热源条件下,冷凝端采用双板换热模式时机组COP高于单板换热模式,双板换热模式可提高机组整体换热效率和节能效果。空气-土壤源双效热泵系统可以有效利用空气能和地热能,在日光温室热环境调控方面具有较好的应用前景。
[Abstract]:In order to explore an energy saving and efficient thermal environment control model in solar greenhouse, an air-ground source dual-effect heat pump system was designed and built based on heat pump technology, and the performance of the system was tested and analyzed. The system combines air and ground heat pump effectively, adopts series plate heat transfer mode, and realizes four heating modes through thermostat and solenoid valve: air source heat pump single board heat transfer mode, air source heat pump double plate heat exchange mode, air source heat pump double plate heat transfer mode, air source heat pump single board heat transfer mode, air source heat pump double plate heat transfer mode, The single board heat transfer model of ground source heat pump and the double plate heat transfer mode of ground source heat pump. The performance coefficient and energy saving effect of double-effect heat pump system in different modes are analyzed by means of heating tank heating test in solar greenhouse. During the spring test, The average COP of heat pump is 2.1 in air source single board heat transfer mode and 3.1 in double plate heat transfer mode, which is 50.4 energy saving compared with greenhouse coal-fired heating boiler, and the average performance coefficient is 2.2 in soil source veneer heat transfer mode. The average coefficient of performance under thermal mode is 2.3. During the winter test, the air source heat pump double plate heat transfer model can effectively increase the temperature in greenhouse model in a typical sunny day, and the average temperature is 15.7 鈩，

本文编号：1787948