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基于数值计算的地源热泵系统热平衡控制策略 被引量:2
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作者 罗丞朝 曹勇 +1 位作者 柳靖 张亮 《建筑节能》 CAS 2019年第9期22-25,共4页
对拥有云数据管控平台的复合式地源热泵系统的热平衡控制策略进行了研究。对使用地源热泵系统的某小区采用eQuest软件模拟建筑全年逐时负荷。在逐时负荷下,通过MATLAB软件计算机组的逐时功率并得到热泵机组的逐时释热量和吸热量,进而确... 对拥有云数据管控平台的复合式地源热泵系统的热平衡控制策略进行了研究。对使用地源热泵系统的某小区采用eQuest软件模拟建筑全年逐时负荷。在逐时负荷下,通过MATLAB软件计算机组的逐时功率并得到热泵机组的逐时释热量和吸热量,进而确定一个负荷参数值k。对于夏热冬冷地区,当系统夏季逐时负荷达到k时开启热泵机组或冷水机组,使这个基于k值的控制策略可以使地源热泵系统对岩土层的释热量和吸热量达到动态平衡的效果。在TRNSYS平台上模拟运行地源热泵系统,比较新旧热平衡控制策略的优劣。 展开更多
关键词 复合式地源热泵系统 热平衡控制策略 岩土层释热量 岩土层吸热量
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Heat flow balance and control strategies for a large GSHP
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作者 陈义波 陈九法 +2 位作者 Umberto Berardi 乔未来 陈军伟 《Journal of Southeast University(English Edition)》 EI CAS 2013年第1期92-98,共7页
The possibility of underground imbalance between heat emission and absorption has a negative impact on the performance of ground-source heat pump systems (GSHPs). Numerical and experimental researches were made in a... The possibility of underground imbalance between heat emission and absorption has a negative impact on the performance of ground-source heat pump systems (GSHPs). Numerical and experimental researches were made in a residential building, which is supplied with a GSHP system and a ceiling radiation system combined with a replacement fresh air system. EnergyPlus simulations were used to estimate heating and cooling loads, and to assess the heat generated from the water pump, the fan and the heat pump unit. Then, Fluent simulations were used to compare three different control strategies of handling the underground heat exchange. These simulations were strongly based on an experimentally verified model. It is obtained that a ratio between cooling and heating loads is 5.08 : 1 in a case study in Nanjing. Moreover, the control strategy based on the starting time is more efficient and reliable than the temperature and temperature difference strategies to control the underground heat exchange. 展开更多
关键词 ground-source heat pump system residential building heat balance control strategy
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