| Author Name | Affiliation | | YangTao | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China | | ZHENG Mao-yu | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China | | WangXiao | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China | | KONG Fan-hong | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China |
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| Abstract: |
| To reduce energy consumption on summer air conditioning,a novel seasonal soil cold storage mode using natural energy is presented and two-dimensional transient heat transfer model of U-tube is developed. The three processes of cold storage in winter,shut-down in transition season and cold extraction in summer are simulated by using sensitive heat capacity method with variable time step. The changing of U-tube outlet water temperature in different periods,daily cold storage and cold extraction are estimated. The temperature field of the U-tube and soil around the tube is investigated. Simulations show that seasonal soil cold storage using natural cold energy is feasible in the north to Changchun,which provides theoretical support for seasonal soil cold storage application. |
| Key words: soil cold storage soil cold extraction variable time step method |
| DOI：10.11916/j.issn.1005-9113.2010.04.010 |
| Clc Number:TU831.6 |
| Fund: |
