| Title |
Study on the Performance Factor of the Modular Ground Heat Exchanger Using CFD Simulation |
| Authors |
Kwon Ye Kim ; Jae Min Kim ; Yujin Nam |
| DOI |
https://doi.org/10.6110/KJACR.2020.32.7.334 |
| Keywords |
전산유체역학 ; 지중열원 ; 지중열교환량 ; 지중열교환기 ; 모듈형 지중열교환기 Computational fluid dynamics ; Ground source energy ; Ground heat exchange rate ; Ground heat exchanger ; Modular ground heat exchanger |
| Abstract |
Recently, as a measure for global warming, zero energy building has become a major issue as a means of conserving energy and reducing carbon emission in the building. In this situation, the focus on renewable energy systems has intensified as well as ongoing technology development. Especially, the ground source heat pump system (GSHP) attains high efficiency by using the annual stable ground temperature. However, it is difficult to introduce it in small-scale buildings because of initial investment costs, such as excavation costs and the installation of the GSHP. In this study, the performance factors of the low-depth modular heat exchanger were reviewed for the development of the ground heat exchanger that is relatively inexpensive and can respond to small-scale buildings compared to the vertical type ground heat exchanger. Assuming an underground heat exchanger is installed in the ground, an analytical model was built and the circulating water temperature was calculated by using the CFD program. Additionally, to find out the factors affecting the performance of the low-depth ground heat exchanger, the prediction of heat exchange rate was performed. |