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Energies 2018, 11(6), 1565; https://doi.org/10.3390/en11061565

Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller

1
Department of Building Environment and Energy Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China
2
Environmental System Research Laboratory, Hokkaido University, N13-W8 Sapporo 060-8628, Japan
*
Author to whom correspondence should be addressed.
Received: 22 May 2018 / Revised: 10 June 2018 / Accepted: 11 June 2018 / Published: 14 June 2018
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Abstract

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. View Full-Text
Keywords: solid sorption chiller; lithium chloride (LiCl); composite sorbent; cooling COP solid sorption chiller; lithium chloride (LiCl); composite sorbent; cooling COP
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Liu, H.; Nagano, K.; Togawa, J. Performance of LiCl Impregnated Mesoporous Material Coating over Corrugated Heat Exchangers in a Solid Sorption Chiller. Energies 2018, 11, 1565.

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