| CO_2跨临界压缩式制冷循环理论分析 |
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| 引用本文： | 王燕江,陶乐仁,刘银燕,王超. CO_2跨临界压缩式制冷循环理论分析[J]. 大学物理实验, 2016, 0(6): 4-8. DOI: 10.14139/j.cnki.cn22-1228.2016.006.002 |
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| 作者姓名： | 王燕江 陶乐仁 刘银燕 王超 |
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| 作者单位： | 上海理工大学,上海,200093 |
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| 基金项目： | 上海市动力工程多相流动与传热重点实验室项目(13DZ2260900) |
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| 摘 要： | 环保工质CO_2作为制冷剂用于空调领域再次受到广泛关注。文中对CO_2跨临界循环进行了热力学理论分析,分析结果表明:循环系统存在最优高压压力,使得其COP达到最大值;蒸发温度的升高或者冷却压力的降低都能提高COP,但都会降低效率;实际运行系统中,应该尽可能提高蒸发温度或者降低气体冷却器的出口温度。
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| 关 键 词： | 热力学 CO2跨临界循环 效率 理论分析 |
Theory Analysis on the CO2Trans-critical Compression Refrigeration Cycle |
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| Abstract: | As an environment-friendly refrigerant,CO2 has been paid a lot of attention again in the area of air-conditioning nowadays.In this paper,the CO2 trans-critical refrigeration cycle was analyzed thermodynamically. It was found:there is an optimal discharge pressure at which COP reaches maximum;It is useful to enhance COP for cycles by increasing the evaporation temperature or decreasing the cooling pressure,though the exergy efficiency is reduced;In the practical working system,the outlet temperature of the gas cooler should be de-creased as much as possible,or increase the evaporator temperature. |
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| Keywords: | thermodynamics CO2 trans-critical cycle exergy efficiency theory analysis |
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