Study of a solar powered solid adsorption–desiccant cooling system used for grain storage

Y.J. Dai, R.Z. Wang and Y.X. Xu

Renewable Energy, 2002, vol. 25, issue 3, 417-430

Abstract: A hybrid solar cooling system, which combines the technologies of rotary desiccant dehumidification and solid adsorption refrigeration, has been proposed for cooling grain. The key components of the system are a rotary desiccant wheel and a solar adsorption collector. The former is used for dehumidification and the later acts as both an adsorption unit and a solar collector. The heating load from sunshine can thus be reduced to a greater extent since the solar adsorption collector is placed on the roof of the grain depot. Compared with the solid adsorption refrigeration system alone, the new hybrid system performs better. Under typical conditions, the coefficient of performance of the system is >0.4 and the outlet temperature is <20°C. It is believed that the system can be used widely in the regions with abundant solar resources due to such advantages as environmental protection, energy saving and low operation costs. Additionally, some parameters, for example, ambient conditions, the effectiveness of the heat exchanger and evaporative cooler, mass air-flow rate, etc., which affect system performance, are also analyzed.

Keywords: Adsorption refrigeration; Rotary desiccant dehumidification; Grain storage; Coefficient of performance (search for similar items in EconPapers)
Date: 2002
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Citations: View citations in EconPapers (14)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:25:y:2002:i:3:p:417-430

DOI: 10.1016/S0960-1481(01)00076-3

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