STUDY ON HEATING CHARACTERISTICS OF PERVIOUS HEATING TOWER IN COLD REGION

Huang Kailiang; Yin Chunya; Feng Guohui; Hao Yuxiang; Jiang Mingzhi

doi:10.19912/j.0254-0096.tynxb.2022-0480

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (7) : 229-234. DOI: 10.19912/j.0254-0096.tynxb.2022-0480

STUDY ON HEATING CHARACTERISTICS OF PERVIOUS HEATING TOWER IN COLD REGION

Huang Kailiang, Yin Chunya, Feng Guohui, Hao Yuxiang, Jiang Mingzhi

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Abstract

An improved cooling tower retroactive heating method for ground source heat pump is proposed. Taking a solar transparent heat supplement tower unit as the research object in cold region, the mathematical models of the heat supplement tower is established. Through the numerical simulation and experimental test, the influences of transparent structure area, liquid-gas ratio and air flow direction on heat supplement are studied. The results show that in the daily operation cycle of the heating tower, the circulating water outlet temperature of double side transparent structure heating tower and the heat transfer rate of cooling tower increase by 0.5 ℃ and 147.4 kW, respectively. Comprehensive analysis of heat transfer efficiency and energy efficiency ratio shows that the best heat transfer effect is achieved if the liquid-gas ratio is controlled at 0.58. Generally, the countercurrent heating tower is improved by 13% on heat absorption efficiency and 5.4 kW on heat exchange than the downstream heating tower. Meanwhile, the temperature difference between inlet and outlet circulating water increases by 0.6 ℃. Therefore, the countercurrent heating tower is exactly selected.

Key words

cooling tower / solar energy / ground source heat pump / transparent structure area / liquid-gas ratio / counterflow

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Huang Kailiang, Yin Chunya, Feng Guohui, Hao Yuxiang, Jiang Mingzhi. STUDY ON HEATING CHARACTERISTICS OF PERVIOUS HEATING TOWER IN COLD REGION[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 229-234 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0480

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