第05章 利用lgp-h图表示制冷循环
Air conditioners use refrigeration to chill indoor air, taking advantage of a remarkable physical law: When a liquid converts to a gas (in a process called phase conversion), it absorbs heat. Air conditioners exploit this feature of phase conversion by forcing special chemical compounds to evapora...
In the cooling mode: when the temperature measurement value ≥ the temperature set point,the refrigeration relay is closed and the refrigerator is started; when the temperature measurement value ≤ temperature set point - the return difference,the refrigeration relay is turned off and the refrigerator...
Problem to be solved: to improve the reliability in the disproportionation reaction of refrigeration cycle equipment using hf1123 working medium. The compressor 16 has a compressor 16, an outdoor heat exchanger 15, an expansion means and an internal heat exchanger, and a compressor in the out...
The maximum difference between the warm and cold temperature of a refrigeration cycle is limited by properties of the refrigerant and/or losses associated with the transport of the refrigerant. For larger temperature differences, one has to arrange several refrigeration cycles "above" each other, each...
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VIZ. (1) The condenser needs to be generously sized to the best refrigeration and air conditioning practices. (2) Special attention needs to be given to plant capacity and sizing of compressor motors. At high ambient, condensing temperatures will be elevated above those normally experienced with ...
Keywords: Heat pump , Absorption, Refrigeration cycle, Efficiency, Entropy generation 1 前言 热泵的效率和潜力已经被广泛认可。 其在工业和城市生活中的许多重要设备发挥着重要 的作用。硅胶-水吸收式循环系统和其他的系统比起来,在周围环境温度驱动的能力上有显 著的优势。高于 60℃的多余热能可以使用传统的硅胶...
制冷与低温原理
A cooling unit 10, a circulation unit 5 and a defrosting and cooling chamber 2 are provided.The cooling unit 10 includes a compressor 11 and a condenser 12 constituting a refrigeration cycle, andEvaporator box 13 having evaporator 14The circulation unit 5 includes a duct 23 for circulating air...