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采用氨水吸收循环,将热源端低品位热能转变为化学能储存于氨水溶液浓度差中,可在环境温度下远距离输送氨水液体至用户端,实现吸收制冷或放热。建立系统数学模型和实验样机,模拟研究表明发生温度为110℃时,远距离制冷热力效率为0.5,制热热力效率为0.6;当输送距离为50km时制冷或制热电力效率均可达到50以上;通过实验样机验证了此理论的可行性,制冷实验热力效率相比理论值平均偏差21%,制热实验热力效率偏差17%,用户端输出温度能够满足夏季空调或冬季供暖需求。
Ammonia absorption cycle, the heat source of low-grade thermal energy into chemical energy stored in ammonia concentration difference, at ambient temperature long-distance transmission of ammonia liquid to the client, to achieve absorption of cooling or exothermic. The system mathematical model and experimental prototype are established. The simulation results show that when the temperature is 110 ℃, the thermal efficiency of long-distance cooling is 0.5 and the heating efficiency is 0.6; when the distance is 50km, the efficiency of cooling or heating power can reach above 50 The feasibility of this theory is verified by the experimental prototype. The average thermal efficiency of the refrigeration experiment is 21% lower than the theoretical value, and the thermal efficiency of the heating experiment is 17%. The output temperature of the client can meet the demand of summer air conditioning or winter heating.