A desiccant dehumidification system with air can be driven by low grade (<80°C) waste heat. In this paper, which is based on experimental data, the air flow at the outlet of the gas cooler of a trans-critical cycle is forced through a desiccant wheel regenerated by the air flow itself. The hybrid trans-critical refrigerator-desiccant system improves COP by approximately 77% as compared to a classical transcritical. The economical analysis suggests that the investment return-time is acceptable (lower than about 8 years) only at ambient temperature exceeding 35°C. The ecological analysis indicates that the TEWI of the classical transcritical cycle exceeds that of the hybrid system, by approximately 60%.

The application of a desiccant wheel to increase the energetic performances of a transcritical cycle

APREA, Ciro;MAIORINO, ANGELO
2015

Abstract

A desiccant dehumidification system with air can be driven by low grade (<80°C) waste heat. In this paper, which is based on experimental data, the air flow at the outlet of the gas cooler of a trans-critical cycle is forced through a desiccant wheel regenerated by the air flow itself. The hybrid trans-critical refrigerator-desiccant system improves COP by approximately 77% as compared to a classical transcritical. The economical analysis suggests that the investment return-time is acceptable (lower than about 8 years) only at ambient temperature exceeding 35°C. The ecological analysis indicates that the TEWI of the classical transcritical cycle exceeds that of the hybrid system, by approximately 60%.
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Descrizione: 0196-8904/Ó 2014 Elsevier Ltd. All rights reserved; Link Editore: http://dx.doi.org/10.1016/j.enconman.2014.09.066
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/4495658
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