Thermal Performance Analysis of a Partly Closed-Open Solar Regenerator

1995 ◽  
Vol 117 (2) ◽  
pp. 151-153 ◽  
Author(s):  
P. Gandhidasan ◽  
A. A. Al-Farayedhi
Keyword(s):  
Performance Analysis ◽  
Surface Area ◽  
Thermal Performance ◽  
Operating Parameters ◽  
Open Surface ◽  
Regeneration System ◽  
Liquid Desiccant ◽  
Regeneration Efficiency

This paper presents a modified open regeneration system suitable for humid climates. The upper part of the open regenerator is covered with a single glazing where the desiccant can be heated up without evaporation of water and the evaporation starts at the beginning of the open surface. For this type of regenerator, performance analysis has been made to predict the mass of water evaporated from the weak liquid desiccant to the atmosphere. The regeneration efficiency is obtained for various ratios of glaze surface area to the open surface area for different operating parameters.

Closed-Type Solar Regenerator: Analysis and Simulation

1995 ◽  
Vol 117 (1) ◽  
pp. 58-61 ◽  
Author(s):  
P. Gandhidasan
Keyword(s):  
Thin Film ◽  
Thermal Performance ◽  
Operating Parameters ◽  
Regeneration System ◽  
Glass Cover ◽  
Tilted Surface ◽  
Closed Type ◽  
Flow Length ◽  
Potential Problems ◽  
Rate Of Evaporation

Due to many potential problems associated with an open regeneration system in application to reconcentration with liquid desiccants, a closed-type solar regenerator has been simulated and analyzed in this paper. It consists of a flat, blackened, tilted surface with a transparent glazing as a covering. The weak desiccant to be concentrated flows as a thin film over the absorber and the water evaporating from the desiccant due to absorption of solar energy is condensed on the underside of the glass cover. A theoretical model, which includes the variation of rate of evaporation of water along the flow length of the regenerator, has been used to examine the thermal performance of the regenerator. Changes in thermal performance are reported in terms of insolation and the mass of water evaporated from the desiccant for different operating parameters.

Thermal performance analysis of plate fin arrays with hexagonal perforations under turbulent flow regime

2019 ◽  
Author(s):  
Imtiaz Taimoor ◽  
Md Lutfor Rahman ◽  
Nazneen Sultana Aankhy ◽  
Muzahid Bin Khalid
Keyword(s):  
Performance Analysis ◽  
Turbulent Flow ◽  
Flow Regime ◽  
Thermal Performance ◽  
Turbulent Flow Regime
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