Experimental study on performance of solar-powered membrane heating and humidification system

被引：0
|
作者：
He Z. [1 ]
Lei T. [1 ]
Li N. [1 ]
Liang C. [1 ]
机构：
[1] School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, Guilin
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 01期
关键词：
Experimental validation; Heat transfer; Humidity control; Membrane; Solar energy;
D O I：
10.19912/j.0254-0096.tynxb.2020-0178
中图分类号：
学科分类号：
摘要：
The hollow fiber membrane humidification system solves the problem of air-liquid entrainment in the humidification process.The effects of solar radiation, air volume flow and hot water volume flow on the heating and humidification performance of the system were analyzed by building a solar-powered hollow fiber membrane heating and humidification system test bench and conducting experimental tests in winter. Increased solar radiation and air volume flow were found to have a positive effect on both the humidification capacity and thermal performance coefficient of the system, with the former having a more significant effect. To obtain the best system performance, 40 ℃(corresponding to solar radiation of 329 W/m2) and 100 L/h were chosen as the optimal hot water conditions with an air volume flow rate of 100 m3/h. Under these conditions, the moisture content of the outlet air is 22.4 g/kg, which is about 4 times the ambient air. The air temperature is 30.5 ℃, the thermal performance coefficient(COP) is 2.40 and the solar energy utilization rate is 45%.Because membrane humidifiers have limited thermal mass exchange capacity, raising hot water temperatures excessively reduces solar energy utilization. In order to provide better performance in ambient air with low moisture content, the use of low air volume flow helps to increase the moisture content and air temperature of the outlet air. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：471 / 477
页数：6
相关论文
共 15 条
  • [1] DU C Q, LI B Z, CHENG Y, Et al., Influence of human thermal adaptation and its development on human thermal responses to warm environments, Building and environment, 139, 3, pp. 134-145, (2018)
  • [2] LI C., Study on the effect of relative humidity and its dynamic changes on human thermal comfort, (2018)
  • [3] PEDER W., Indoor air humidity, air quality, and health-An overview, International journal of hygiene and environmental health, 221, 3, pp. 376-390, (2018)
  • [4] LIU X L, QU M, LIU X B, Et al., Membrane based liquid desiccant air dehumidification: A comprehensive review on materials, components, systems and performances, Renewable and sustainable energy reviews, 110, 1, pp. 444-466, (2019)
  • [5] FAKHARNEZHAD A, MASOUMI S, KESHAVARZ P., Analysis of design parameter effects on gas dehumidification in hollow fiber membrane contactor: Theoretical and experimental study, Separation and purification technology, 226, 3, pp. 22-30, (2019)
  • [6] BAKERI G H, NAEIMIFARD S, MATSUURA T, Et al., A porous polyethersulfone hollow fiber membrane in a gas humidification prcoess, RSC advances, 5, 19, pp. 14448-14457, (2015)
  • [7] CHEN X J, SU Y H, AYDIN D., Experimental investigation of a polymer hollow fibre integrated liquid desiccant dehumidification system with aqueous potassium formate solution, Applied thermal engineering, 142, 3, pp. 632-643, (2018)
  • [8] ZHANG L Z., Coupled heat and mass transfer in an application-scale cross-flow hollow fiber membrane module for air humidification, International journal of heat and mass transfer, 55, 21-22, pp. 5861-5869, (2012)
  • [9] LI S., A study on the humidification performance of new semi-random, semi-regulated hollow fiber membrane components, (2017)
  • [10] YANG M L, HUANG S M, YANG X X., Experimental investigations of a quasi-counter flow parallel plate membrane contactor used for air humidification, Energy and buildings, 80, 16, pp. 640-644, (2014)
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