Performance evaluation of PV/T-driven desiccant-wheel-coupled vacuum membrane dehumidification cooling system

doi:10.16085/j.issn.1000-6613.2024-0657

Abstract

Abstract:

A novel building cooling system was proposed, namely the PDVD-cooling system, which integrated a photovoltaic/thermal (PV/T) hot water system, a desiccant wheel dehumidifier, a vacuum membrane dehumidifier, and a dew point evaporative cooling system. The PDVD-cooling system focused on improving energy efficiency while utilizing renewable energy. A thermodynamic model of the PDVD cooling system was constructed, the sensitivity and regulation characteristics of the performance operating parameters of the PDVD cooling system were analyzed, and an economic analysis of the PDVD cooling system was conducted. The results indicated that regenerated air temperature, regenerated air mass flow rate and solar irradiance were the main parameters affecting the coefficient of performance (COP) of the system. The regenerated area ratio, regenerated air temperature and supply air mass flow rate were the main parameters that affected the total latent heat cooling capacity of the system. Ambient humidity, supply air mass flow rate and ambient temperature were the main parameters that affected the total sensible heat cooling capacity of the system. COP decreased with the increase of regenerated air temperature and regenerated air mass flow, and increased with the increase of solar irradiance. The total latent heat cooling capacity increased first and then decreased with the increase of regenerated area ratio, and increased with the increase of regenerated air temperature and supply air mass flow rate. When the solar irradiance was 800W/m², the ambient temperature was 30℃, the ambient humidity was 70%, and the regeneration area ratio was 0.25, the maximum latent heat cooling capacity existed as 4.09kW. The total sensible heat cooling capacity decreased with the increase of ambient humidity, increased with the increased of supply air, and first increased and then decreased with the increase of ambient temperature. When the solar irradiance was 800W/m², the ambient temperature was 22℃, the ambient humidity was 70%, and the regeneration area ratio was 0.5, the maximum sensible heat cooling capacity was 1.89kW. The payback period was 0.9272 years when the cost of the dehumidification membrane was 600USD/m².

Key words: photovoltaic/thermal (PV/T), desiccant wheel dehumidification, vacuum membrane dehumidification, dehumidification air conditioning, air conditioning system

摘要：

提出了一种集光伏/热（PV/T）热水系统、转轮除湿、真空膜除湿、露点蒸发冷却系统于一体的新型建筑冷却系统（PDVD冷却系统）。PDVD冷却系统的重点是提高能源效率，同时利用可再生能源。建立了PDVD冷却系统的热力学模型，进行了PDVD冷却系统性能运行参数的敏感性和调控特性分析，并对PDVD冷却系统进行了经济性分析。结果表明：再生空气温度、再生空气质量流量和太阳辐照度是影响系统性能系数（COP）的主要参数。再生面积比、再生空气温度和工艺空气质量流量是影响系统总潜热制冷量的主要参数。环境湿度、工艺空气质量流量和环境温度是影响系统总显热制冷量的主要参数。COP随着再生空气温度和再生空气质量流量的增加而降低，随着太阳辐照度的增加而增加。总潜热制冷量随着再生面积比的增加先增加后减少，随着再生空气温度和工艺空气质量流量的增加而增加。当太阳辐照度为800W/m²、环境温度为30℃、环境湿度为70%、再生面积比为0.25时，存在最大潜热制冷量为4.09kW。总显热制冷量随着环境湿度的增加而降低，随着工艺空气的增加而增加，随着环境温度的增加先增加后减少。当太阳辐照度为800W/m²、环境温度为22℃、环境湿度为70%、再生面积比为0.5时，存在最大显热制冷量为1.89kW。当除湿膜成本为600USD/m²时，投资回收期为0.9272年。

关键词: 集光伏/热, 转轮除湿, 膜除湿, 除湿空调, 空调系统

CLC Number:

TK519

CHUN Liang, LIAO Zicheng, WANG Guoqiang, XIAO Yao, HUO Jinpeng, LIU Dong. Performance evaluation of PV/T-driven desiccant-wheel-coupled vacuum membrane dehumidification cooling system[J]. Chemical Industry and Engineering Progress, 2025, 44(6): 3457-3467.

淳良, 廖子成, 王国强, 肖遥, 霍金鹏, 刘东. PV/T驱动转轮除湿耦合真空膜除湿冷却系统的性能评价[J]. 化工进展, 2025, 44(6): 3457-3467.

Figures/Tables 13

参数	设计范围
再生空气温度（T_heat）/℃	60~70
再生空气质量流量（m_re）/kg·s^-1	0.16~0.21
太阳辐照度（G）/W·m^-2	300~800
环境温度（T_a）/℃	20~30
环境湿度（RH_a）/%	60~80
工艺空气质量流量（m_sa）/kg·s^-1	0.2~0.4
再生面积比（λ_re）	0.1~0.6
渗透侧压力（p_vac）/kPa	18~22
选择性系数（S_w/a）	4.5~5.5

参数/组件	数值	参考文献
利率（i）/%	4.35	[15]
平均通货膨胀率（r_i ）/%	2.9	[15]
实际增长率（r_r）/%	0	[15]
电价实际增长率（r_r,EC）/%	3	[15]
CO₂排放价格实际增长率（ $r C O 2$ ）/%	2.04	[15]
电价（c_E）/USD·kW^-1·h^-1	0.136	[15]
CO₂排放税（ $c C O 2$ ）/USD·t^-1	18.3	[15]
太阳能空调制冷系统生命周期/年	20	[17]
传统蒸汽压缩式空调制冷系统生命周期/年	15	[15]
太阳能空调制冷系统运营与维护成本/% of CC	1.25	[17]
传统蒸汽压缩式空调制冷系统运营与维护成本/% of CC	1.75	[15]
太阳能空调制冷系统安装成本/% of CC	150	[17]
传统蒸汽压缩式空调制冷系统安装成本/% of CC	130	[15]
PV/T集热器/USD·m^-2	87	[18]
光伏电池/USD	45	[18]
翅片换热器/USD	30	[19]
储罐/USD·m^-3	168.32	[20]
热水泵/USD	15	[20]
辅助加热器/USD·kW^-1	139	[20]
转轮除湿/USD	268	[21]
真空泵/USD	11034.32	[22]
露点蒸发冷却/USD	3623.9	[19]
气泵/USD·kW^-1	18.54	[16]

参数/组件	数值	参考文献
利率（i）/%	4.35	[15]
平均通货膨胀率（r_i ）/%	2.9	[15]
实际增长率（r_r）/%	0	[15]
电价实际增长率（r_r,EC）/%	3	[15]
CO₂排放价格实际增长率（ $r C O 2$ ）/%	2.04	[15]
电价（c_E）/USD·kW^-1·h^-1	0.136	[15]
CO₂排放税（ $c C O 2$ ）/USD·t^-1	18.3	[15]
太阳能空调制冷系统生命周期/年	20	[17]
传统蒸汽压缩式空调制冷系统生命周期/年	15	[15]
太阳能空调制冷系统运营与维护成本/% of CC	1.25	[17]
传统蒸汽压缩式空调制冷系统运营与维护成本/% of CC	1.75	[15]
太阳能空调制冷系统安装成本/% of CC	150	[17]
传统蒸汽压缩式空调制冷系统安装成本/% of CC	130	[15]
PV/T集热器/USD·m^-2	87	[18]
光伏电池/USD	45	[18]
翅片换热器/USD	30	[19]
储罐/USD·m^-3	168.32	[20]
热水泵/USD	15	[20]
辅助加热器/USD·kW^-1	139	[20]
转轮除湿/USD	268	[21]
真空泵/USD	11034.32	[22]
露点蒸发冷却/USD	3623.9	[19]
气泵/USD·kW^-1	18.54	[16]

References 22

[1]	SUN Zhaohui, LIU Jiankun, HU Tianfei, et al. Field test study of a novel solar refrigeration pile in permafrost regions[J]. Solar Energy, 2023, 263: 111845.
[2]	XU Aixiang, LUO Xinyu, SONG Tingting, et al. Integrated life cycle assessment and emergy analysis of liquid dehumidification absorption refrigeration driven by solar energy[J]. Applied Thermal Engineering, 2024, 236: 121540.
[3]	GUO Jinyi, BILBAO Jose I, SPROUL Alistair B. Parametric number of transfer unit analysis of a photovoltaic thermal coupled desiccant dehumidifier[J]. Energy Conversion and Management, 2022, 255: 115339.
[4]	BLEIBEL Nabil, ISMAIL Nagham, GHADDAR Nesreen, et al. Solar-assisted desiccant dehumidification system to improve performance of evaporatively cooled window in hot and-humid climates[J]. Applied Thermal Engineering, 2020, 179: 115726.
[5]	YANG Bianfeng, WANG Cong, JI Xu, et al. A solar-assisted regenerative desiccant air conditioning with indirect evaporative cooling for humid climate region[J]. Applied Thermal Engineering, 2024, 243: 122598.
[6]	LAI Lanbo, WANG Xiaolin, KEFAYATI Gholamreza, et al. Performance evaluation of a solar powered solid desiccant evaporative cooling system with different recirculation air ratios[J]. Energy and Buildings, 2022, 270: 112273.
[7]	CHEON Seong-Yong, CHO Hye-Jin, JEONG Jae-Weon. Simplified effectiveness and number of transfer unit model for a vacuum membrane dehumidifier applied to air conditioning[J]. Applied Thermal Engineering, 2022, 210: 118404.
[8]	CHUN Liang, GONG Guangcai, PENG Pei, et al. Research on thermodynamic performance of a novel building cooling system integrating dew point evaporative cooling, air-carrying energy radiant air conditioning and vacuum membrane-based dehumidification (DAV-cooling system)[J]. Energy Conversion and Management, 2021, 245: 114551.
[9]	TIWARI Arvind, SODHA M S. Performance evaluation of solar PV/T system: An experimental validation[J]. Solar Energy, 2006, 80(7): 751-759.
[10]	ALOBAID Mohammad, HUGHES Ben, Dominic O’CONNOR, et al. Improving thermal and electrical efficiency in photovoltaic thermal systems for sustainable cooling system integration[J]. Journal of Sustainable Development of Energy, Water and Environment Systems, 2018, 6(2): 305-322.
[11]	ZONDAG H A. Flat-plate PV-Thermal collectors and systems: A review[J]. Renewable and Sustainable Energy Reviews, 2008, 12(4): 891-959.
[12]	CHENG Dang, PETERS E A J F, KUIPERS J A M. Numerical modelling of flow and coupled mass and heat transfer in an adsorption process[J]. Chemical Engineering Science, 2016, 152: 413-425.
[13]	SHIRAZI Alec, TAYLOR Robert A, WHITE Stephen D, et al. Transient simulation and parametric study of solar-assisted heating and cooling absorption systems: An energetic, economic and environmental (3E) assessment[J]. Renewable Energy, 2016, 86: 955-971.
[14]	RIANGVILAIKUL B, KUMAR Sivanappan. Numerical study of a novel dew point evaporative cooling system[J]. Energy and Buildings, 2010, 42(11): 2241-2250.
[15]	DESAI Nishith B, MONDEJAR Maria E, HAGLIND Fredrik. Techno-economic analysis of two-tank and packed-bed rock thermal energy storages for foil-based concentrating solar collector driven cogeneration plants[J]. Renewable Energy, 2022, 186: 814-830.
[16]	NDETO Martin Paul, NJOKA Francis, WEKESA David Wafula, et al. Mechanisms and economics of a self-powered, automated, scalable solar PV surface cleaning system[J]. Renewable Energy, 2024, 226: 120477.
[17]	LIU Yinjiao, BI Dongmei, YIN Mengqian, et al. Modeling and exergy-economy analysis of residential building energy supply systems combining torrefied biomass gasification and solar energy[J]. Thermal Science and Engineering Progress, 2024, 50: 102584.
[18]	PARDILLOS-POBO D, GONZÁLEZ-GÓMEZ Pedro Ángel, Marta LAPORTE-AZCUÉ, et al. Thermo-economic design of an electric heater to store renewable curtailment in solar power tower plants[J]. Energy Conversion and Management, 2023, 297: 117710.
[19]	BOUCHAALA Ahmed, MERROUN Ossama, ARKAM Youssef, et al. Energy saving and economic competitiveness of solar desiccant cooling technology—A case study of the Moroccan Kingdom[J]. Renewable and Sustainable Energy Reviews, 2024, 192: 114188.
[20]	ZHANG Hongkuan, MA Hongting, MA Shuo. Energy, exergy, economic and environmental analysis of an indirect evaporative cooling integrated with liquid dehumidification[J]. Energy, 2022, 253: 124147.
[21]	LIU Liming, LI Zeyu, JING Yue, LV Shiliang. Energetic, economic and environmental study of cooling capacity for absorption subsystem in solar absorption-subcooled compression hybrid cooling system based on data of entire working period[J]. Energy Conversion and Management, 2018, 167: 165-175.
[22]	袁伦睿. 太阳能光热辅助真空膜除湿空调系统性能研究[D]. 绵阳: 西南科技大学, 2024.
	YUAN Lunrui. Performance Study of Solar Photothermal Assisted Vacuum Membrane-based Dehumidification Air Conditioning System[D]. Mianyang: Southwest University of Science and Technology 2024.