技术中心

表面式换热器实验台水侧换热量测试误差分析【英文篇名】 Measurement error analysis of heat transfer in water side of a surface-type heat-exchanger test-bed 【作者中文名】 张吉礼; 陈永攀; 李丰丰; 高甫生; 【作者英文名】 By Zhang Jili~★; Chen Yongpan; Li Fengfeng and Gao Fusheng; 【作者单位】 哈尔滨工业大学; 【文献出处】 暖通空调, Hv 水侧换热量; 误差分析; 【英文关键词】 surface type heat exchanger; heat transfer in water side; error analysis; 【摘要】 介绍了实验系统误差分析的基本原理,给出了换热器水侧换热量测试误差的表达式,研究了水侧换热量测试仪表最大允许误差的影响因素,分析了水温测试误差和压差测试误差对水侧换热量测试误差的影响,指出换热器进出口水温测试误差是影响换热器水侧换热量测试误差的主要因素。 【英文摘要】 Presents the principle of the error analysis. Deduces a formula of measurement error for heat transfer in water side for surface-type heat-exchangers. Discusses the major factors influencing the maximum permissible error of the test instrumentation. Analyses the influence of water temperature and pressure measurement on heat transfer in water side. Stresses that the key factor of reducing the measurement error is water temperature measurement of in-out pipe of heat exchanger.