【摘要】：針對抽灌同井運行特性的研究不足,利用單井循環(huán)地下?lián)Q熱系統(tǒng)砂箱實驗臺,以上海地區(qū)的采暖期和空調期的時間尺度為依據(jù),開展了抽灌同井夏冬、冬夏兩種運行模式下運行特性的實驗研究。結果表明,該砂箱實驗臺中的含水層熱量流失較快,放熱工況下熱源井排放熱量較容易,取熱工況下熱源井提取熱量較困難。抽灌同井在冷負荷占優(yōu)的地區(qū)運行時,需要采用輔助技術手段,分擔地下含水層承擔的供冷負荷,保證系統(tǒng)長期可靠運行。建議系統(tǒng)先進行冬季取熱工況的運行,提取含水層儲熱量;繼而進行夏季排熱工況,保持熱源井較低的抽水溫度,提高熱泵機組效率。
[Abstract]:In view of the lack of research on the operation characteristics of the same well, a single well circulating underground heat transfer system sand box test bench is used to carry out the pumping and irrigation in the same well in summer and winter based on the time scale of heating and air conditioning period in Shanghai area. Experimental study on operating characteristics of two operating modes in winter and summer. The results show that the heat loss of the aquifer in the sand box test bench is faster, the heat discharge from the heat source well is easier under the heat release condition, and the heat extraction from the heat source well under the heat removal condition is more difficult. When pumping and irrigation wells operate in areas where the cooling load is dominant, auxiliary technical means should be adopted to share the cooling load borne by the underground aquifer, so as to ensure the long-term reliable operation of the system. It is suggested that the system should first carry out the operation of the heat recovery condition in winter to extract the heat storage of the aquifer and then carry out the heat discharge condition in summer to maintain the low pumping temperature of the heat source well and improve the efficiency of the heat pump unit.
【作者單位】： 北方工業(yè)大學土木工程學院;哈爾濱工業(yè)大學市政環(huán)境工程學院;
【基金】：國家自然科學基金(41002085,41602278) 中國博士后科學基金(2016M601129) 供熱供燃氣通風及空調工程北京市重點實驗室研究基金 北方工業(yè)大學青年拔尖人才培育計劃資助
【分類號】：TU83
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本文編號：2170916