期刊
APPLIED THERMAL ENGINEERING
卷 148, 期 -, 页码 838-845出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2018.11.018
关键词
EAHE system; Similarity theory; Model experiment; Numerical simulation; Design
资金
- National Natural Science Foundation of China [51504182, 51674188, 51404191, 51405381]
- Natural Science Basic Research Plan of Shaanxi Province of China [2015JQ5187, 2018JQ5183, 2018JM5161]
- Shaanxi Provincial Education Department [15JK1466]
- China Postdoctoral Science Foundation [2015M582685]
- Outstanding Youth Science Fund of Xi'an University of Science and Technology [2018YQ2-01]
- National Research Council of Science AMP
- Technology (NST) grant by the Korean government (MSIP) [16-38502]
An earth-air heat exchanger (EAHE) system is an effective energy-saving technique for heating and cooling a space by using Earth's subsurface heat. The EAHE system has been widely applied in residential and public buildings, but feasibility research is still needed because of the regional restrictions and influencing factors that may be involved. In this paper, a 1:20 scale model is created to study the influence parameters on the thermal performance of the EAHE due to the limitations of field test. By dimensionless analysis of the momentum and heat conduction equations, the key similarity numbers Re and Fo and the similar scales are proposed. The experimental data were compared with other studies and achieved good agreement. The original soil temperatures at different depths in Xi'an are calculated by MATLAB software. On this basis, a preliminary design scheme for the EAHE system of a memorial is proposed and analyzed by numerical simulation.
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