摘要
依据ASHRAE标准117-1192,对带负载真空玻璃门冷冻陈列柜进行了8h开门实验,发现5h后柜内明显升温,同时开门使得能耗比稳定时增加了28%。研究表明,冷射流对柜内温度分布和能耗有着重要影响,热空气的卷吸作用次之。送风温度的转折点对减少温度回升起着关键作用,而控制送风温度初期的骤降幅度对于节能意义重大。初步分析了影响柜内温度分布和能耗的因素,提出了减少由于开门造成的温度回升和能耗的方法。
In accordance with ASHRAE 117-1192, 8-hour door opening experiment was carded out on an on-load refrigerated display cabinet with vacuum-glass doors. There was apparent temperature rise 5 hours later, and energy consumption increased by 28%, compared with stable conditions. The results strongly suggest that the cold jet has higher effect on temperature distribution and energy consumption, followed by the entrainment of hot air. The outlet air temperature is vital to temperature rise and energy consumption. Temperature rise attributes much to its turning point, and its initial drop-off amplitude is of significance to energy conservation. The factors affecting temperature distribution and energy consumption are analyzed, furthermore, it is put forward how to minimize temperature rise and energy consumption caused by door opening.
出处
《家电科技》
2007年第8期70-72,共3页
Journal of Appliance Science & Technology
基金
高等学校博士学科点专项科研基金(20050561017)
新世纪优秀人才支持计划(NCET040826)
关键词
开门
冷冻陈列柜
真空玻璃
温度分布
Door opening. Refrigerated display cabinet, Vacuum glass, Temperature distribution
