摘要
基于相关性能测试标准和JJF 1059-1999规范,对整体水源热泵样机制冷量测试结果的不确定度进行了分析,建立了空气侧和水侧计算数学模型,对A类和B类不确定度进行了分别评定,结果表明,机组该次测量的不确定相对值为2%。讨论干球温度、湿球温度、喷嘴直径、压差、大气压力、水温、流量等参数对制冷量测量不确定度的影响,提出了对温度测量回路进行一体化标定的建议,为提高试验系统的测试水平提供了参考。
Based on standards GB/T 19409-2003 and JJF 1059-1999, uncertainty in integral water-souree heat pump cooling capacity measurement is analyzed. Calculation model for air-side and water-side test are established, and A-type and B-type un- certainty are evaluated respectively. Conclusion indicates that relative uncertainty of this measurement is 2%. Main influence fac- tors on refrigeration volume measurement, such as dry-bulb temperature, wet-bulb temperature, nozzle diameter, pressure differ- ence, atmospheric pressure, water temperature, flow, etc. , are discussed. Temperature measurement channel integral calibration is recommended, and the advices are helpful for accuracy enhancement of test system.
出处
《流体机械》
CSCD
北大核心
2008年第9期56-58,41,共4页
Fluid Machinery
基金
国家科技支撑计划资助项目(2006BAJ01A10)
关键词
整体水源热泵
测量
制冷量
不确定度
integral water-source heat pump
measurement
cooling capacity
uncertainty
