Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller
The composite material made by impregnating 40 wt. % lithium chloride (LiCl) into the mesopores of a kind of natural porous rock (Wakkanai Siliceous Shale: WSS) micropowders (short for “WSS + 40 wt. % LiCl”) had been developed previously, and can be regenerated below 100 °...
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doaj-1ff7db1ec9dc455995f7dbd82c0068032020-11-25T01:22:39ZengMDPI AGEnergies1996-10732018-06-01116156510.3390/en11061565en11061565Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption ChillerHongzhi Liu0Katsunori Nagano1Junya Togawa2Department of Building Environment and Energy Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, ChinaEnvironmental System Research Laboratory, Hokkaido University, N13-W8 Sapporo 060-8628, JapanEnvironmental System Research Laboratory, Hokkaido University, N13-W8 Sapporo 060-8628, JapanThe composite material made by impregnating 40 wt. % lithium chloride (LiCl) into the mesopores of a kind of natural porous rock (Wakkanai Siliceous Shale: WSS) micropowders (short for “WSS + 40 wt. % LiCl”) had been developed previously, and can be regenerated below 100 °C with a cooling coefficient of performance (COP) of approximately 0.3 when adopted as a sorbent in a sorption cooler. In this study, experiments have been carried out on an intermittent solid sorption chiller with the WSS + 40 wt. % LiCl coating over two aluminum corrugated heat exchangers. Based on the experimental condition (regeneration temperature of 80 °C, condensation temperature of 30 °C in the desorption process; sorption temperature of 30 °C and evaporation temperature of 12 °C in the sorption process), the water sorption amount changes from 20 wt. % to 70 wt. % in one sorption cooling cycle. Moreover, a specific cooling power (SCP) of 86 W/kg, a volumetric specific cooling power (VSCP) of 42 W/dm3, and a specific sorption power of 170 W/kg can be achieved with a total sorption and desorption time of 20 min. The obtained cooling COP is approximately 0.16.http://www.mdpi.com/1996-1073/11/6/1565solid sorption chillerlithium chloride (LiCl)composite sorbentcooling COP |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hongzhi Liu Katsunori Nagano Junya Togawa |
spellingShingle |
Hongzhi Liu Katsunori Nagano Junya Togawa Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller Energies solid sorption chiller lithium chloride (LiCl) composite sorbent cooling COP |
author_facet |
Hongzhi Liu Katsunori Nagano Junya Togawa |
author_sort |
Hongzhi Liu |
title |
Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller |
title_short |
Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller |
title_full |
Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller |
title_fullStr |
Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller |
title_full_unstemmed |
Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller |
title_sort |
performance of licl impregnated mesoporous material coating over corrugated heat exchangers in a solid sorption chiller |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2018-06-01 |
description |
The composite material made by impregnating 40 wt. % lithium chloride (LiCl) into the mesopores of a kind of natural porous rock (Wakkanai Siliceous Shale: WSS) micropowders (short for “WSS + 40 wt. % LiCl”) had been developed previously, and can be regenerated below 100 °C with a cooling coefficient of performance (COP) of approximately 0.3 when adopted as a sorbent in a sorption cooler. In this study, experiments have been carried out on an intermittent solid sorption chiller with the WSS + 40 wt. % LiCl coating over two aluminum corrugated heat exchangers. Based on the experimental condition (regeneration temperature of 80 °C, condensation temperature of 30 °C in the desorption process; sorption temperature of 30 °C and evaporation temperature of 12 °C in the sorption process), the water sorption amount changes from 20 wt. % to 70 wt. % in one sorption cooling cycle. Moreover, a specific cooling power (SCP) of 86 W/kg, a volumetric specific cooling power (VSCP) of 42 W/dm3, and a specific sorption power of 170 W/kg can be achieved with a total sorption and desorption time of 20 min. The obtained cooling COP is approximately 0.16. |
topic |
solid sorption chiller lithium chloride (LiCl) composite sorbent cooling COP |
url |
http://www.mdpi.com/1996-1073/11/6/1565 |
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