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The effect of the circulation fan installed in fresh food compartment on energy consumption of natural convective refrigerator/freezers (RFs) was experimentally studied. Five different RF models with different cycles were tested. The experimental results showed that the energy consumption of the single-loop cycle RF increased by 2.4%~3.8%, that of the bypass two-circuit cycle RF decreased by 1.0%, and that of the two-circuit cycle RF with its evaporators in parallel when the geometry parameters of refrigeration system and the refrigerant charge were not changed after the circulation fan was installed decreased by 3.3%. When the optimization on the refrigerant charge and the evaporator was carried out, the energy consumption of the single-loop cycle RF , the bypass two-circuit cycle RF and the two-circuit cycle RF with its evaporators in parallel, decreased by 1.0%~6.4%, 3.25% and 3.26% respectively. The present conclusions will provide a guideline to the optimum design for the RF with the circulation fan. 相似文献
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船舶伙食冷藏库的设计 总被引:1,自引:0,他引:1
简述浙江某船业公司16500t货轮伙食冷藏库工程设计的过程,介绍船用冷库工作特性和常规的工艺设计方案,以及设计技术参数和冷量的选定等,供有关设计、使用人员参考. 相似文献
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针对海上钻井平台伙食冷藏库制冷压缩机故障原因进行计算分析,结果表明主要原因是压缩机的吸入阻力过大,提出缩短冷凝机组与冷风机的距离等相应的解决对策。 相似文献
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日本三洋电机公司试制了用太阳能集热器供给的140℃的热水为热源,制取低于-7℃盐水的吸收式制冷机。该制冷机以三氟甲醇(TFE)为制冷剂,以正甲基-2-吡咯烷酮(NMP)为吸收剂。制冷量为4.5万kcal/h。本文提供了1987年4月1日~1988年3月31日的运转数据。给定条件下的热力系数为0.43以上,实测值为0.476。还介绍了制冷机的工作原理。 相似文献
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