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新型高效太阳能吸收式制冷循环

A novel high-efficient solar absorption refrigeration cycles

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【作者】 万忠民舒水明胡兴华

【Author】 Wan Zhongmin Shu Shuiming Hu Xinhua(1 Department of Physics,Hu′nan Institute of Science and Technology,Yueyang 414006,Hu′nan China;2 College of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

【机构】 湖南理工学院物理系华中科技大学能源与动力工程学院华中科技大学能源与动力工程学院 湖南岳阳414006湖北武汉430074

【摘要】 提出了一种新型高效太阳能LiBr吸收式制冷循环.在传统的两级吸收式循环的基础上,将高压发生器发生出的LiBr溶液与低压吸收器吸收后的溶液混合,在发生温度与压力允许的范围内,使高压吸收器的吸收剂浓度较两级吸收式循环高,从而在相同的冷凝条件下减小了其压力.分析了新型循环的性能,并与传统的两级吸收式制冷循环进行比较,结果表明影响系统性能的主要因素是溶液浓度及低压发生器压力,新型吸收式循环的发生热源温度在75~85℃,系统的热力系数最高可达0.605,其热源可利用温差最大可达33.5℃,其性能在传统循环基础上有较大提高,效果较明显.

【Abstract】 Proposed is a novel high-efficiency refrigeration cycle by using solar lithium bromide water absorption,based on traditional two-stage absorption refrigeration cycles.The lithium bromide solution from a high pressure generator was mixed with the solution from a low pressure absorber,in order to increase more the concentration of the lithium bromide in the high pressure generator than that of lithium bromide in the traditional two-stage refrigeration cycles and decrease the pressure in the high pressure absorber on the same cooling condition as the traditional refrigeration cycles.The performance of the new type cycle was analyzed.The theoretical analysis results show that compared with the two-stage absorption cycle,the performances of cycle systems are influence mainly by the solution concentration and pressure in the low pressure generator.The heat resource temperatures range from 75℃ to 85℃,the highest COP is 0.605 and the highest available temperature difference is up to(33.5℃),in the new-type cycle system.The new-type solar absorption refrigeration cycles presented can be used in solar air-conditioners effectively.

【基金】 湖南省教育厅资助项目(04C271)
  • 【文献出处】 华中科技大学学报(自然科学版) ,Journal of Huazhong University of Science and Technology(Nature Science Edition) , 编辑部邮箱 ,2006年09期
  • 【分类号】TK511.3
  • 【被引频次】16
  • 【下载频次】601
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