Performance evaluation of a solar-aided liquid desiccant evaporative cooling system

2018 ◽  
Author(s):  
Sneha Reddy ◽  
S. Shanmuga Priya ◽  
S. Harish Kuma
Keyword(s):  
Performance Evaluation ◽  
Cooling System ◽  
Evaporative Cooling ◽  
Liquid Desiccant ◽  
Evaporative Cooling System

Energy Analysis of Liquid Desiccant Based Evaporative Cooling System

2005 ◽  
Author(s):  
Faleh A. Al-Sulaiman ◽  
P. Gandhidasan
Keyword(s):  
Thermal Energy ◽  
Energy Analysis ◽  
Cooling System ◽  
Mechanical Energy ◽  
Evaporative Cooling ◽  
Zeolite Membrane ◽  
Solution Temperature ◽  
Regeneration System ◽  
Liquid Desiccant ◽  
Evaporative Cooling System

This paper presents preliminary findings of the energy analysis of a cooling system with multistage evaporative coolers using liquid desiccant dehumidifier between the stages. The proposed evaporative cooling system utilizes the air humidity for cooling in humid areas and requires no additional water supply. The major energy requirement associated with this cooling system is the energy for regenerating the weak liquid desiccant. In this paper two types of energy namely thermal energy as well as mechanical energy are considered for regeneration. For thermal energy, the heat input for regeneration is supplied from the conventional energy sources such as a simple line heater. Reverse osmosis (RO) process is considered for regeneration by mechanical energy and MFI zeolite membrane is proposed for separation of water from the weak desiccant solution. Energy analysis has been carried out for both methods of regeneration. The results show that the energy consumption is about 25% less for the mechanical regeneration system with 3 % recovery than the thermal energy regeneration system to increase the desiccant solution temperature of 22°C. The COP of the proposed cooling system is defined as the cooling effect by the mass rate of water evaporated in the system divided by the amount of energy supplied to the system, that is, the COP is independent of the energy source.

Study of the Thermodynamic Processes and Performance Evaluation of Self-Circulation Evaporative Cooling System in Hydro-Generator

2014 ◽  
Vol 488-489 ◽  
pp. 979-982
Author(s):  
Hai Hong Dong ◽  
Lin Ruan ◽  
Shu Qin Guo ◽  
Rui Cao ◽  
Jin Xiu Chen
Keyword(s):  
Performance Evaluation ◽  
Power Loss ◽  
Heat Load ◽  
Cooling System ◽  
Evaporative Cooling ◽  
Second Law Of Thermodynamics ◽  
Evaporative Cooling System ◽  
Cooling Technology ◽  
And Performance ◽  
Thermodynamic Processes

The self-circulation evaporative cooling system (SECS) of stator collector ring is a kind of new cooling technology, utilizing the evaporating of work fluid to cool the stator collector ring of hydro-generator. In this article, the thermodynamic processes of SECS of stator collector ring were analyzed by the second law of thermodynamics. The entropy production and power loss of isolated SECS were analyzed. Based on the distinctive characteristics of SECS, a performance evaluation function was proposed. The influence of heat load on was discussed by simulating. The conclusions provide the theory basis for the application of this new cooling technology.

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