A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Enhancing the cooling potential of a solar-assisted desiccant cooling system by ground source free cooling
This work investigates the hourly operation of the Uçkan configuration of the desiccant system that uses ground and solar energies in combination. In this system, the ground source heat exchanger (GSHE) is used as a cooling component after the desiccant wheel (DW) (post-cooler) together with using simultaneously before (pre-cooler) and after the DW. The validity of this configuration is evaluated in several hot-humid regions, and an economic assessment is performed to confirm the system cost-feasibility. This study examines the impact of the return air ratio on the level of thermal comfort established, system COP, energy consumed for regeneration, and solar fraction (SF). Here, a guideline for sizing various components in the system is demonstrated. For the best scenario in which the GSHE is placed before and after the DW, the system would successfully provide thermal comfort for 95% of its working time, using low energy consumption when compared to conventional configurations. The best scenario resulted in the highest COP of 0.43, the highest SF of 63.6%, and the payback period of 6.8 years. With the results, increasing the return air ratio promotes system COP and SF, while it decreases the consumed energy.
Enhancing the cooling potential of a solar-assisted desiccant cooling system by ground source free cooling
This work investigates the hourly operation of the Uçkan configuration of the desiccant system that uses ground and solar energies in combination. In this system, the ground source heat exchanger (GSHE) is used as a cooling component after the desiccant wheel (DW) (post-cooler) together with using simultaneously before (pre-cooler) and after the DW. The validity of this configuration is evaluated in several hot-humid regions, and an economic assessment is performed to confirm the system cost-feasibility. This study examines the impact of the return air ratio on the level of thermal comfort established, system COP, energy consumed for regeneration, and solar fraction (SF). Here, a guideline for sizing various components in the system is demonstrated. For the best scenario in which the GSHE is placed before and after the DW, the system would successfully provide thermal comfort for 95% of its working time, using low energy consumption when compared to conventional configurations. The best scenario resulted in the highest COP of 0.43, the highest SF of 63.6%, and the payback period of 6.8 years. With the results, increasing the return air ratio promotes system COP and SF, while it decreases the consumed energy.
Enhancing the cooling potential of a solar-assisted desiccant cooling system by ground source free cooling
Build. Simul.
Berardi, Umberto (author) / Heidarinejad, Ghassem (author) / Rayegan, Saeed (author) / Pasdarshahri, Hadi (author)
Building Simulation ; 13 ; 1125-1144
2020-10-01
20 pages
Article (Journal)
Electronic Resource
English
desiccant-evaporative cooling , renewable energy , hourly operation , thermal comfort , hot and humid regions Engineering , Building Construction and Design , Engineering Thermodynamics, Heat and Mass Transfer , Atmospheric Protection/Air Quality Control/Air Pollution , Monitoring/Environmental Analysis
British Library Online Contents | 1994
HCFC-Free Ground Coupled Desiccant Cooling
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The potential for solar powered desiccant cooling
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Desiccant-Assisted Cooling : Fundamentals and Applications
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