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Investigation of Design Options for Improving the Energy Efficiency of Conventionally Designed Refrigerator-Freezers 提高常规设计冰箱冷冻柜能效的设计方案研究
为了提高传统设计的家用冰箱/冷冻机(RFs)的能效,在1990年生产的两个RF柜和制冷系统中加入了若干设计选项。原始部件和单元部件的基线性能已详尽记录,为实验测量的节能提供了坚实的基础。使用一个能够模拟循环行为的详细冰箱系统计算机模型来评估每次修改对日常能源使用的影响,并将建模结果与实验结果进行比较。结果表明,该模型能够很好地跟踪测量到的射频性能改善,因此在一定程度上被用于研究无法通过实验进行研究的其他选项。 在系统组件和制冷系统设计方面进行了相对较小的改动,证明了射频效率的显著提高。然而,每项改进都会增加成本或系统复杂性/可靠性。对于通常在美国销售的RF尺寸(510-620升),可能需要更复杂的替代制冷循环来实现项目目标(570l顶部安装RF的容量为1.00 kWh/天)。关键词:制冷、效率、能耗、设计、热力循环、计算机程序、计算。引文:研讨会,ASHRAE Trans.1994,第100卷,第1部分
Several design options for improving the energy efficiency of conventionally designed domestic refrigerator/freezers (RFs) were incorporated into two 1990 production RF cabinets and refrigeration systems. The baseline performance of the original and unit components was exhaustively documented to provide a firm basis for experimentally measured energy savings. A detailed refrigerator system computer model that could simulate cycling behaviour was used to evaluate the daily energy use impacts for each modification, and modelled versus experimental results are compared. The model was shown to track measured RF performance improvement sufficiently well that it was used with some confidence to investigate additional options that could not be experimentally investigated. Substantial improvements in RF efficiency were demonstrated with relatively minor changes in system components and refrigeration system design. However, each improvement exacts a penalty in terms of increased cost or system complexity/reliability. For RF sizes typically sold in the USA (510 - 620 l) more elaborate alternative refrigeration cycles may be required to achieve the programme goal (1.00 kWh/day for a 570l top-mount RF.KEYWORDS: Refrigeration, efficiency, energy consumption, designing, thermodynamic cyclic, computer programs, calculating.
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