燃气采暖热水炉测试装置热损失测试方法
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摘要
通过对燃气采暖热水炉测试装置热损失进行理论计算、实验测试与数据分析,发现对于同一测试装置,测试装置单位时间热损失Φ_0和循环水温度与环境温度的温差ΔT之间存在线性关系。可根据循环水温度与环境温度的温差ΔT,按照由实验数据拟合的关系式直接计算测试装置单位时间热损失(拟合值)Φ_0,然后根据供暖热效率的测试时间,计算得到测试装置热损失(拟合值) Q_0,然后计算供暖热效率。用Q_0计算得到的供暖热效率与用测试装置热损失(实测值)得到的供暖热效率的偏差的绝对值小于或等于0. 1%。这样,可以简化测试流程,缩短测试时间,提高工作效率。
Through the theoretical calculation,experimental test and data analysis on the heat loss of test device for gas-fired heating and hot water combiboilers,it is found that there is a linear relationship between the heat loss Φ0 of the test device per unit time and the temperature difference ΔT between the circulating water temperature and the ambient temperature for the same test device. According to the temperature difference ΔT between the circulating water temperature and the ambient temperature,the heat loss( fit value) Φ0 of the test device per unit time can be directly calculated based on the relationship fitted by the experimental data,and then according to the test time of the heating thermal efficiency,the heat loss( fit value) Q0 of the test device is obtained by calculation,then the heating thermal efficiency is calculated. The absolute value of the deviation between the heating thermal efficiency calculated by Q0 and the heating thermal efficiency obtained by the test device heat loss( measured value) is 0. 1% or less. This method can simplify the test process,reduce the test time and improve the work efficiency.
Through the theoretical calculation,experimental test and data analysis on the heat loss of test device for gas-fired heating and hot water combiboilers,it is found that there is a linear relationship between the heat loss Φ0 of the test device per unit time and the temperature difference ΔT between the circulating water temperature and the ambient temperature for the same test device. According to the temperature difference ΔT between the circulating water temperature and the ambient temperature,the heat loss( fit value) Φ0 of the test device per unit time can be directly calculated based on the relationship fitted by the experimental data,and then according to the test time of the heating thermal efficiency,the heat loss( fit value) Q0 of the test device is obtained by calculation,then the heating thermal efficiency is calculated. The absolute value of the deviation between the heating thermal efficiency calculated by Q0 and the heating thermal efficiency obtained by the test device heat loss( measured value) is 0. 1% or less. This method can simplify the test process,reduce the test time and improve the work efficiency.
引文
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[4]何贵龙,高硕.燃气采暖热水炉检验标准对比[J].煤气与热力,2011,31(6):B33-B36.
[5]何贵龙,杨丽杰,李蓓.燃气采暖热水炉产品性能统计分析(上)[J].煤气与热力,2012,32(11):B15-B21.
[6]何贵龙,杨丽杰,李蓓.燃气采暖热水炉产品性能统计分析(下)[J].煤气与热力,2012,32(12):B17-B22.
[7]戴锅生.传热学[M]. 2版.北京:高等教育出版社,2011:131-132.
[8]莫理京,王致中,刘希和,等.绝热工程技术手册[M].北京:中国石化出版社,1997:7.