Cascaded liquid desiccant system for humidity control in space conditioned by cooled membrane ceiling and displacement ventilation

Based on a new type of sprayed liquid desiccant total heat recovery device, a liquid desiccant system combined refrigeration system with the independent humidity control (IHC) strategy is presented, in which the entire latent load and part of the sensible load are removed by liquid desiccant fresh unit combining heat pump (LFUH). The air-conditioning cooling load of a commercial building is simulated by DEST software. And the energy consumption is calculated respectively for conventional air conditioning system and IHC system. Compared with ordinary systems, IHC system can achieve savings of about 20% of the power consumption per annum. In addition, the average coefficient of chiller performance (COP) can increase about 13.5%. The result sows that IHC system has better application prospects.

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Hollow fibre membrane-based liquid desiccant humidity control for controlled environment agriculture

Biosystems Engineering ◽

10.1016/j.biosystemseng.2019.04.010 ◽

2019 ◽

Vol 183 ◽

pp. 47-57 ◽

Cited By ~ 3

Author(s):

Ryan M. Lefers ◽

N.M. Srivatsa Bettahalli ◽

Nina V. Fedoroff ◽

Noreddine Ghaffour ◽

Philip A. Davies ◽

...

Keyword(s):

Hollow Fibre ◽

Controlled Environment ◽

Liquid Desiccant ◽

Humidity Control ◽

Hollow Fibre Membrane ◽

Fibre Membrane ◽

Controlled Environment Agriculture

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Solar-Powered, Liquid-Desiccant Air Conditioner for Low-Electricity Humidity Control

10.21236/ada607986 ◽

2012 ◽

Cited By ~ 6

Author(s):

Jesse Dean ◽

Eric Kozubal ◽

Lesley Herrmann ◽

Jeff Miller ◽

Andy Lowenstein ◽

...

Keyword(s):

Air Conditioner ◽

Liquid Desiccant ◽

Humidity Control ◽

Solar Powered

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Humidity Control in Confined Building Spaces Using Liquid Desiccant Dehumidifier-Conceptual Investigation

Solar Energy ◽

10.1115/isec2004-65096 ◽

2004 ◽

Author(s):

D. Dong ◽

M. Liu

Keyword(s):

Physical Models ◽

Conceptual System ◽

Confined Space ◽

Short Time Period ◽

Liquid Desiccant ◽

Humidity Control ◽

Confined Spaces ◽

Time Period ◽

Short Time ◽

Simultaneous Heat

Moisture and moisture-related problems often originate from the confined spaces such as bathrooms and kitchens, where large amounts of moisture are released within a short time period. These problems are identified by signs including condensation on windows and walls as well as mold and fungi growth in corners of interior surfaces of walls and ceiling. To prevent condensation and formations of mold and fungi in the confined spaces, a special desiccant dehumidification system may be used. This system uses ambient space air to regenerate when the spaces produce no moisture. To investigate the feasibility of the desiccant dehumidification system for confined space humidity control, a conceptual system and physical models were developed. Numerical simulations were conducted to calculate simultaneous heat and mass transfer involved among moisture source, space air and liquid desiccant. This paper presents the methods and simulated results. The results show that use of the desiccant dehumidification system can substantially reduce the room humidity level.

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