Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study on the application of closed-loop lake water heat pump systems for lakefront buildings in south China climates
The performance of closed-loop lake water heat pump (LWHP) systems is primarily influenced by lake area, lake depth, and local climate. In this study, a systemic model for closed-loop LWHP systems was developed for the system performance analysis. Field measurements of the heat transfer coefficient of submerged coils were conducted under various conditions for the purpose of model application. The model has been used for the dynamic simulations of a closed-loop LWHP system in Zhuzhou, a city in south China. The daily average coefficient of performance of the system was found to be within the range of 2.8 to 3.2 in 183 days of the 229-day cooling and heating seasons. The influences of lake area and depth on system performance were analyzed through the comparisons among the hourly entering fluid temperatures in three scenarios. The comparison results indicate that deep lakes are more favorable for cooling performance improvement than for heating performance improvement. For two lakes with identical volume, the deeper lake is more favorable for cooling performance improvement than the larger lake except in September.
Study on the application of closed-loop lake water heat pump systems for lakefront buildings in south China climates
The performance of closed-loop lake water heat pump (LWHP) systems is primarily influenced by lake area, lake depth, and local climate. In this study, a systemic model for closed-loop LWHP systems was developed for the system performance analysis. Field measurements of the heat transfer coefficient of submerged coils were conducted under various conditions for the purpose of model application. The model has been used for the dynamic simulations of a closed-loop LWHP system in Zhuzhou, a city in south China. The daily average coefficient of performance of the system was found to be within the range of 2.8 to 3.2 in 183 days of the 229-day cooling and heating seasons. The influences of lake area and depth on system performance were analyzed through the comparisons among the hourly entering fluid temperatures in three scenarios. The comparison results indicate that deep lakes are more favorable for cooling performance improvement than for heating performance improvement. For two lakes with identical volume, the deeper lake is more favorable for cooling performance improvement than the larger lake except in September.
Study on the application of closed-loop lake water heat pump systems for lakefront buildings in south China climates
Chen, Xiao (Autor:in) / Zhang, Guoqiang (Autor:in)
01.05.2014
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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