| 摘要: |
| 本文基于蒸气压缩式制冷循环与空气增湿除湿原理相结合的家用纯净水系统,进一步探究了进口水量对系统运行工况参数,制冷量,系统总功耗、制冷COP以及单位时间产水量和单位能耗产水量等参数的影响。结果表明：在本文研究工况下(环境温度25℃ ,循环风量100 m3/h ,进水温度25 ℃,进口水量2.5~4.5L),随着进口水量的增大,系统各主要部件(压缩机,蒸发器、辅助冷凝器)制冷剂进出口温度以及压缩机吸排气压力均呈下降趋势,系统总功耗也呈下降趋势,单位能耗产水量呈上升趋势;系统存在一个最佳的进口水量为3.5 L/h,此时系统单位时间产水量、制冷量和COP达到峰值,分别为0.682 L/h,699 W和2.44,单位能耗产水量为2.058 L/(kW·h)。系统所制取水的卫生指标(TDS < 3 mg/L,脱盐率达到98%)和日产水量(> 12 L/d)均可满足一般家庭饮用需求,同时该系统还可产生60℃及以上的生活热水供家庭使用。 |
| 关键词: 纯净水机 蒸气压缩式制冷 增湿除湿 进口水量 系统性能 |
| DOI： |
| 投稿时间：2020-08-25 修订日期：2020-12-03
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| 基金项目:国家自然科学基金(51676129)资助项目。 |
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| Influence of Inlet Water Flow Rate on Refrigeration System andWater Producing Performance of a New Household Water Purifier |
| Ma Yiyu,Wu Weidong,Hua Ruoqiu,Wang Li |
| (School of Energy and Power Engineering,University of Shanghai for Science and Technology) |
| Abstract: |
| Based on the principle of air humidification-dehumidification, a novel household water purifier with a vapor compression refrigeration system was proposed and established in this study. The influence of the inlet water flow rate on the key parameters of the system performance was analyzed. These performance parameters included the operating conditions of the system, cooling capacity, power consumption, coefficient of performance (COP), water production rate, and water production per unit energy consumption. The results showed that the refrigerant inlet and outlet temperatures of the main components of the system (compressor, evaporator, and auxiliary condenser) and the suction and exhaust pressures of the compressor all showed a downward trend with the increase in the inlet water flow rate under experimental conditions (ambient temperature of 25 °C, circulating air volume of 100 m3/h, inlet water temperature of 25 ℃, inlet water flow rate of 2.5–4.5 L). The system power consumption also showed a downward trend, while the water production per unit energy consumption showed an upward trend. There was an optimal inlet water flow rate of 3.5 L/h when the water production rate, cooling capacity and COP of the system reached their peak values, which were 0.682 L/h, 699 W and 2.44, respectively, and the water production per unit energy consumption was 2.058 L/kWh. The hygienic indicators (i.e., TDS less than 3) and daily production (above 12 L/d) of the purified water in the system can meet the drinking requirements of general households, and the system can also produce domestic hot water not lower than 60 °C, which has wide application prospects. |
| Key words: water purifier vapor compression refrigeration humidification-dehumidification inlet water flow rate system performance |
