IEC新标准对直冷冰箱耗电量评价的研究

Research of New IEC Standard Effect on Refrigerator Energy Consumption

IEC62552作为全球的参考标准,对冰箱耗电量测量方法进行了修订,我国据此提出冰箱耗电量测标准草案。本文依据修订前后的标准.对直冷冰箱进行了耗电量评价的研究。结果表明,修订后的耗电量相比修订前没有太大的变化,耗电量仅增加1.1%;如果进行开门测试,结果影响较大,耗电量增加8.5%。保持原有系统设计时,系统在16℃环境下测试存在优化空间;在32℃环境温度下,系统不能很好匹配多个间室冷量,调试难度加大。为了能够同时满足多种测试条件下系统优化运行,采用变频压缩机并配合储液器使用,可以随环境温度变化自动调整冷量,更好的平衡间室间冷量。此外,对换热器也需要采取折中优化设计,使得最终全年的耗电最优化。

IEC62552 is the globe standard,so as to revise the measurement method of refrigerator energy consumption,and China also proposed the relevant standard draft based on this revision.This paper makes a research of effect on refrigerator energy consumption by comparing previous standard and revised version.As a result,the energy consumption increased 1.1%after standard revised comparing with previous version,which is of little difference.And energy consumption increased 8.5%if opening the refrigerator door during tests period,which is a significant effect.The refrigerator with original design has a margin to be optimized at 16℃ ambient condition.And it is not best matching to have a good cooling capacity balance between two compartments at 32℃ ambient condition,which results in more difficult adjustment of system setting.In order to have optimized operation of refrigerator at different ambient conditions,variable capacity compressor,fixing an additional accumulator,is a good solution to adjust system loop cooling capacity automatically,and to balance capacity between different compartments better.On the other hand,heat exchanger should be redesigned to split difference test condition that would lead to optimized energy consumption of the whole year.