A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Heat storage characteristics and application analysis of heat source tower in soil thermal balance of ground source heat pump
Highlights A new method of using HST for soil heat storage in summer is proposed. Both the sensible heat and latent heat in the air can be stored into soil by HST. The HST system solves the problem of soil thermal imbalance of GSHP effectively. The COP of the HST system in soil heat storage is up to 27.54.
Abstract In order to solve the problem of soil thermal imbalance of ground source heat pump (GSHP), a new method of using heat source tower (HST) to absorb heat from air and store heat to soil through borehole heat exchange (BHE) in summer was proposed. The finite element iteration calculation of heat and mass transfer of HST was realized by MATLAB. The results show that the heat storage capacity increases obviously with the increasing of air temperature and relative humidity and the decreasing of soil temperature. Increasing the number of BHE and reducing the water flow rate of each BHE are also beneficial to heat storage. Among the total heat storage, the ratio of air latent heat even reaches 70%. Under the average meteorological parameters in July of Changchun and the water flow rate of 5 kg/s in HST, the heat storage demand of a 1000 m2 building can be completed in 34 days and the coefficient of performance (COP) of the HST system is up to 27.54. Heating the soil out of season by HST is a high efficiency and low cost method to solve the problem of soil thermal imbalance of GSHP.
Heat storage characteristics and application analysis of heat source tower in soil thermal balance of ground source heat pump
Highlights A new method of using HST for soil heat storage in summer is proposed. Both the sensible heat and latent heat in the air can be stored into soil by HST. The HST system solves the problem of soil thermal imbalance of GSHP effectively. The COP of the HST system in soil heat storage is up to 27.54.
Abstract In order to solve the problem of soil thermal imbalance of ground source heat pump (GSHP), a new method of using heat source tower (HST) to absorb heat from air and store heat to soil through borehole heat exchange (BHE) in summer was proposed. The finite element iteration calculation of heat and mass transfer of HST was realized by MATLAB. The results show that the heat storage capacity increases obviously with the increasing of air temperature and relative humidity and the decreasing of soil temperature. Increasing the number of BHE and reducing the water flow rate of each BHE are also beneficial to heat storage. Among the total heat storage, the ratio of air latent heat even reaches 70%. Under the average meteorological parameters in July of Changchun and the water flow rate of 5 kg/s in HST, the heat storage demand of a 1000 m2 building can be completed in 34 days and the coefficient of performance (COP) of the HST system is up to 27.54. Heating the soil out of season by HST is a high efficiency and low cost method to solve the problem of soil thermal imbalance of GSHP.
Heat storage characteristics and application analysis of heat source tower in soil thermal balance of ground source heat pump
Hu, Zicheng (author) / Geng, Shuwen (author) / Huang, Yufei (author) / Ge, Fenghua (author) / Wang, Yuecheng (author)
Energy and Buildings ; 235
2021-01-12
Article (Journal)
Electronic Resource
English
Soil thermal imbalance , HST , Heat storage , GSHP , COP , Latent heat
Thermal Storage Properties of a Hybrid Ground Source Heat Pump
| British Library Conference Proceedings | 2012
Thermal Storage Properties of a Hybrid Ground Source Heat Pump
| British Library Online Contents | 2012
Discussion of Ground Source Heat Pump System Heat Balance in Severe Cold Area
| British Library Conference Proceedings | 2014