Influence of circulating air quantity on cooling system and water producing performance of new household pure water machine

doi:10.11949/j.issn.0438-1157.20180672

Abstract

Abstract:

In this paper, a novel household pure water production system was proposed and established by combining the principles of vapor compression refrigeration and air humidification-dehumidification. The effects of the circulating air quantity on some running and performance parameters were experimentally conducted. These parameters included operating conditions of the system, refrigerating capacity, power consumption, coefficient of performance (COP), and produced water quantity of unit time and unit energy consumption. The results showed that with the increase of circulating air quantity, system refrigerating capacity, power consumption and produced water quantity of unit time tended to rise, the COP showed a downward trend after rising first, and the maximum water production of the system under the conditions studied in this paper was 668 g/h. The system has an optimal circulating air volume of 110.2 m³/h, which maximizes the system s energy consumption per unit, which is 2067 g/(kW·h). The hygienic indicators (i.e. TDS less than 3) and daily production (above 12 L/d) of the water in the system can meet the requirements of the general household drinking and the system has a wide application prospect.

Key words: pure water machine, vapor compression refrigeration, humidification-dehumidification, circulating air quantity, system performance, heat transfer, mass transfer

摘要：

提出一种利用蒸气压缩制冷和空气加湿除湿原理相结合的家用纯净水生产系统，基于所搭建的性能测试台，实验研究了系统运行工况参数、制冷量、系统功耗、COP以及单位时间制水量和单位能耗制水量等性能参数随循环风量的变化规律。结果表明：随着循环风量的增大，系统制冷量、功耗及单位时间制水量均呈现上升趋势，COP则存在一个峰值；在实验工况下系统最大制水量达668 g/h，同时该系统存在一个最佳的循环风量为110.2 m³/h，使系统单位能耗制水量达最大，为2067 g/(kW·h)。利用该系统所制取水的卫生指标（TDS < 3 mg/L）和日产水量（> 12 L/d）均可满足一般家庭饮用需求，具有广阔的应用前景。

关键词: 纯净水机, 蒸气压缩制冷, 增湿-除湿, 循环风量, 系统性能, 传热, 传质

CLC Number:

TB 61⁺5

Li WANG, Weidong WU, Kun HU. Influence of circulating air quantity on cooling system and water producing performance of new household pure water machine[J]. CIESC Journal, 2019, 70(1): 99-106.

汪力, 武卫东, 胡锟. 循环风量对新型家用纯净水机制冷系统及制水性能的影响[J]. 化工学报, 2019, 70(1): 99-106.

Figures/Tables 7

Fig.1 System composition and principle diagram of a new household pure water machine

Table 1 Experimental conditions

Ambient air temperature/℃

Inlet water temperature of system /℃

Water intake/(L/h)

Compressor speed/

(r/min)

Circulating air quantity/

(m³/h)

4.0

2880

80.8—117.5

Fig.2 Influence of circulating air quantity on evaporator inlet/outlet refrigerant temperature and air temperature

Fig.3 Influence of circulating air quantity on compressor suction/discharge temperature and pressure

Fig.4 Influence of circulating air quantity on condenser inlet/outlet refrigerant temperature, air temperature and relative humidity

Fig.5 Influence of circulating air quantity on refrigerating capacity, power consumption and COP

Fig.6 Influence of circulating air quantity on unit time water production and unit energy consumption water production

References 31

1	吴义锋, 吕锡武. 饮用水深度处理系统溶解性有机的变化与组成特性[J]. 化工学报, 2011, 62(3): 805-810.
	WuY F, LyuX W. Characteristics and constituent of dissolved organics in drinking water advanced treatment process[J]. CIESC Journal, 2011, 62(3): 805-810.
2	YangH J, ShenZ M, ZhangJ P, et al. Water quality characteristics along the course of the Huangpu River (China)[J]. Journal of Environmental Sciences, 2007, (10): 1193-1198.
3	WardM H, JonesR R, BrenderJ D, et al. Drinking water nitrate and human health: an updated review[J]. International Journal of Environmental Research & Public Health, 2018, 15(7): 1557.
4	BehroozE, MasoumeS, MiladS, et al. The effectiveness of home water purification systems on the amount of fluoride in drinking water[J]. Journal of Dentistry, 2015, 16(3): 278-281.
5	王恩东. 纯净水的生产设计[J]. 化学工程与装备, 2012, (8): 125-128.
	WangE D. Pure water production design[J]. Chemica1 Engineering & Equipment, 2012, (8): 125-128.
6	SunZ, FanY, WangB. Status and trend of domestic and imported drinking water purifiers[J]. Journal of Harbin University of Civil Engineering & Architecture, 1999, (4): 61-64.
7	潘杰峰, 郑瑜, 丁金成, 等. 膜法电容去离子技术用于水溶液中单/多价阴离子的分离[J]. 化工学报, 2018, 69(8): 3502-3508.
	PanJ F, ZhengY, DingJ C, et al. Monovalent anions removal by capacitive deionization integrated with monovalent anion permselective exchange membrane[J]. CIESC Journal, 2018, 69(8): 3502-3508.
8	王郑. 我国微污染水源水处理技术研究进展[J]. 工业水处理, 2012, 32(10): 1-71.
	WangZ. Research progress in the treatment processes of micro-polluted source water in China[J]. Industrial Water Treatment, 2012, 32(10): 1-71.
9	ShannonM A, BohnP W, ElimelechM, et al. Science and technology for water purification in the coming decades[J]. Nature, 2008, 452(7185): 301-10.
10	赵英, 顾平. 利用分子量分布探讨粉末活性炭对膜生物反应器的影响[J]. 化工学报, 2009, 60(12): 3117-3121.
	ZhaoY, GuP. Influence of PAC on MBR through molecular weight distribution measurement[J]. CIESC Journal, 2009, 60(12): 3117-3121.
11	杨晓明, 张朝晖, 王亮, 等. MIEX和PAC对微污染水源水的水质净化效果比较[J]. 化工学报, 2016, 67(4): 1505-1511.
	YangX M, ZhangZ H, WangL, et al. Comparison of purification of micropolluted source water by MIEX and PAC[J]. CIESC Journal, 2016, 67(4): 1505-1511.
12	TygarinovV V. An equipment for collecting water from air: RS69751[P]. 1947.
13	AhsanA, IslamK M S. FukuharaT, et al. Experimental study on evaporation, condensation and production of a new tubular solar still[J]. Desalination, 2010, 260(1): 172-179.
14	NawaysehN K, FaridM M, OmarA A, et al. Solar desalination based on humidification process(Ⅱ): Computer simulation[J]. Energy Conversion & Management, 1999, 40(13): 1441-1461.
15	JafarM M, ZilouchianA. Prediction of critical desalination parameters using radial basis functions networks[J]. Journal of Intelligent and Robotic Systems, 2002, 34(2): 219-230.
16	KabeelA E, HamedM H, OmaraZ M, et al. Water desalination using a humidification dehumidification technique: a detailed review[J]. Natural Resources, 2013, 4(3): 286-305.
17	欧阳生春, 张文宇, 蔡龙俊. 空调冷凝水作为水资源的回收利用[J]. 电力与能源, 2006, 27(6): 268-270.
	OuyangS C, ZhangW Y, CaiL J. Condensate water recovery as water source in air conditioning[J]. Energy Technology, 2006, 27(6): 268-270.
18	GuzK. Condensate water recovery[J]. ASHRAE Journal, 2005, 47(11): 54-57.
19	陈楠, 申江, 邹同华. 房间空调器冷凝水的利用与节能[J]. 暖通空调, 2003, 33(2): 117-118.
	ChenN, ShenJ, ZouT H. Utilization and energy saving of condensing water from room air conditioner[J]. Journal of HV& AC, 2003, 33(2): 117-118.
20	赵岐华. 对《房间空调器冷凝水的利用和节能》的一点看法[J]. 暖通空调, 2005, 35(5): 58-59.
	ZhaoQ H. Opinion on Utilization of condensing water from room air conditioner and energy saving[J]. Journal of HV& AC, 2005, 35(5): 58-59.
21	魏燕, 胡永海. 空调冷凝水作为饮用水的回收利用[J]. 节能, 2008, 27(3): 41-43.
	WeiY, HuY H. Recycling of air-conditioning condensate as drinking water[J]. Energy Conservation, 2008, 27(3): 41-43.
22	梁仁建, 李林. 空调冷凝水净化直饮水装置的研制[J]. 低温与超导, 2009, 37(2): 65-67.
	LiangR J, LiL. The research of purifying air-conditioning condensed water into direct drinking water[J]. Cryogenics and Superconductivity, 2009, 37(2): 65-67.
23	金听祥, 张彩荣. 冷凝水在家用空调中回收利用技术的研究进展[J]. 低温与超导, 2016, (1): 41-45.
	JinT X, ZhangC R. Research development of recovery and utilization technology of condensate water in household air conditioner[J]. Cryogenics and Superconductivity, 2016, (1): 41-45.
24	LiuB, LiQ, ZhouZ, et al. The effect of the inject pressure on the distilled water by vacuum heat pump[J]. Desalination, 2016, 399: 29-33.
25	SiqueirosJ, HollandF A. Water desalination using heat pumps[J]. Energy, 2000, 25(8): 717-729.
26	唐福辉, 刘斌. 多功能蒸馏水机: 102219270A[P]. 2011-10-19.
	TangF H, LiuB. Multifunctional water distilling machine: 102219270A[P]. 2011-10-19.
27	孟中华, 刘仲, 刘雪慧, 等. 饮用水中5项指标检测结果的相关性分析[J]. 中国卫生检验杂志, 2015, (18): 3205-3206.
	MengZ H, LiuZ, LiuX H, et al. Correlative analysis of the results of five indicators in drinking water[J]. Chinese Journal of Health Laboratory Technology, 2015, (18): 3205-3206.
28	中华人民共和国卫生部, 中国国家标准化管理委员会. 生活饮用水标准检验方法: GB/T5750.1—2006[S]. 北京: 中国标准出版社, 2007.
	Ministry of Health of the People s Republic of China, Standardiza-tion Administration of the People s Republic of China. Standard examination methods for drinking water: GB/T5750.1—2006[S]. Beijing: Standards Press of China, 2007.
29	MoffatR J. Describing the uncertainties in experimental results[J]. Experimental Thermal & Fluid Science, 1988, 1(1): 3-17.
30	MoffatR J. Contributions to the theory of single-sample uncertainty analysis[J]. Journal of Fluids Engineering, 1982, 104(2): 250-260.
31	中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 家用和类似用途饮用水处理内芯: GB/T 30306—2013[S]. 北京: 中国标准出版社, 2013.
	General Administration of Quality Supervision, Inspection and Quarantine of the People s Republic of China, Standardization Administration of the People s Republic of China. Household and similar purposes drinking water purification inner core: GB/T 30306—2013[S]. Beijing: Standards Press of China, 2013.

[1]	Jingwei CHAO, Jiaxing XU, Tingxian LI. Investigation on the heating performance of the tube-free-evaporation based sorption thermal battery [J]. CIESC Journal, 2023, 74(S1): 302-310.
[2]	Cheng CHENG, Zhongdi DUAN, Haoran SUN, Haitao HU, Hongxiang XUE. Lattice Boltzmann simulation of surface microstructure effect on crystallization fouling [J]. CIESC Journal, 2023, 74(S1): 74-86.
[3]	Shuangxing ZHANG, Fangchen LIU, Yifei ZHANG, Wenjing DU. Experimental study on phase change heat storage and release performance of R-134a pulsating heat pipe [J]. CIESC Journal, 2023, 74(S1): 165-171.
[4]	Yifei ZHANG, Fangchen LIU, Shuangxing ZHANG, Wenjing DU. Performance analysis of printed circuit heat exchanger for supercritical carbon dioxide [J]. CIESC Journal, 2023, 74(S1): 183-190.
[5]	Aiqiang CHEN, Yanqi DAI, Yue LIU, Bin LIU, Hanming WU. Influence of substrate temperature on HFE7100 droplet evaporation process [J]. CIESC Journal, 2023, 74(S1): 191-197.
[6]	Mingxi LIU, Yanpeng WU. Simulation analysis of effect of diameter and length of light pipes on heat transfer [J]. CIESC Journal, 2023, 74(S1): 206-212.
[7]	Zhiguo WANG, Meng XUE, Yushuang DONG, Tianzhen ZHANG, Xiaokai QIN, Qiang HAN. Numerical simulation and analysis of geothermal rock mass heat flow coupling based on fracture roughness characterization method [J]. CIESC Journal, 2023, 74(S1): 223-234.
[8]	Yitong LI, Hang GUO, Hao CHEN, Fang YE. Study on operating conditions of proton exchange membrane fuel cells with non-uniform catalyst distributions [J]. CIESC Journal, 2023, 74(9): 3831-3840.
[9]	Yubing WANG, Jie LI, Hongbo ZHAN, Guangya ZHU, Dalin ZHANG. Experimental study on flow boiling heat transfer of R134a in mini channel with diamond pin fin array [J]. CIESC Journal, 2023, 74(9): 3797-3806.
[10]	Cong QI, Zi DING, Jie YU, Maoqing TANG, Lin LIANG. Study on solar thermoelectric power generation characteristics based on selective absorption nanofilm [J]. CIESC Journal, 2023, 74(9): 3921-3930.
[11]	Ke LI, Jian WEN, Biping XIN. Study on influence mechanism of vacuum multi-layer insulation coupled with vapor-cooled shield on self-pressurization process of liquid hydrogen storage tank [J]. CIESC Journal, 2023, 74(9): 3786-3796.
[12]	Tianhua CHEN, Zhaoxuan LIU, Qun HAN, Chengbin ZHANG, Wenming LI. Research progress and influencing factors of the heat transfer enhancement of spray cooling [J]. CIESC Journal, 2023, 74(8): 3149-3170.
[13]	Yue YANG, Dan ZHANG, Jugan ZHENG, Maoping TU, Qingzhong YANG. Experimental study on flash and mixing evaporation of aqueous NaCl solution [J]. CIESC Journal, 2023, 74(8): 3279-3291.
[14]	Rui HONG, Baoqiang YUAN, Wenjing DU. Analysis on mechanism of heat transfer deterioration of supercritical carbon dioxide in vertical upward tube [J]. CIESC Journal, 2023, 74(8): 3309-3319.
[15]	Ben ZHANG, Songbai WANG, Ziya WEI, Tingting HAO, Xuehu MA, Rongfu WEN. Capillary liquid film condensation and heat transfer enhancement driven by superhydrophilic porous metal structure [J]. CIESC Journal, 2023, 74(7): 2824-2835.