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 / C., Aprea; Greco, Adriana; A., Maiorino. - In: ENERGY CONVERSION AND MANAGEMENT. - ISSN 1879-2227. - 89:(2015), pp. 222-230. [10.1016/j.enconman.2014.09.066]
The application of a desiccant wheel to increase the energetic performances of a transcritical cycle
GRECO, ADRIANA;
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%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
