Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage
Heat storage with thermochemical (TC) materials is a promising technology for solar energy storage. In this paper, a solar-driven desiccant evaporative cooling (DEC) system for air-conditioning is proposed, which converts solar heat energy into cooling with built-in daily storage. The system utilise...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/9/2429 |
| _version_ | 1797536475001126912 |
|---|---|
| author | Fahid Riaz Muhammad Abdul Qyyum Awais Bokhari Jiří Jaromír Klemeš Muhammad Usman Muhammad Asim Muhammad Rizwan Awan Muhammad Imran Moonyong Lee |
| author_facet | Fahid Riaz Muhammad Abdul Qyyum Awais Bokhari Jiří Jaromír Klemeš Muhammad Usman Muhammad Asim Muhammad Rizwan Awan Muhammad Imran Moonyong Lee |
| author_sort | Fahid Riaz |
| collection | DOAJ |
| description | Heat storage with thermochemical (TC) materials is a promising technology for solar energy storage. In this paper, a solar-driven desiccant evaporative cooling (DEC) system for air-conditioning is proposed, which converts solar heat energy into cooling with built-in daily storage. The system utilises thermochemical heat storage along with the DEC technology in a unique way. Magnesium Chloride (MgCl<sub>2</sub>·6H<sub>2</sub>O) has been used, which serves as both a desiccant and a thermochemical heat storage medium. The system has been designed for the subtropical climate of Lahore, Pakistan, for a bedroom with 8 h of cooling requirements during the night. MATLAB has been employed for modelling the system. The simulation results show that 57 kg of magnesium chloride is sufficient to meet 98.8% of cooling demand for the entire month of July at an elevated cooling requirement. It was found that the cooling output of the system increased with increasing heat exchanger effectiveness. The heat exchangers’ effectiveness was increased from 0.7 to 0.8, with the solar fraction increased from 70.4% to 82.44%. The cooled air supplied to the building meets the fresh air requirements for proper ventilation. |
| first_indexed | 2024-03-10T12:01:12Z |
| format | Article |
| id | doaj.art-ba39d96067fc410c95dfba552da7debc |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T12:01:12Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ba39d96067fc410c95dfba552da7debc2023-11-21T16:58:07ZengMDPI AGEnergies1996-10732021-04-01149242910.3390/en14092429Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy StorageFahid Riaz0Muhammad Abdul Qyyum1Awais Bokhari2Jiří Jaromír Klemeš3Muhammad Usman4Muhammad Asim5Muhammad Rizwan Awan6Muhammad Imran7Moonyong Lee8Department of Mechanical Engineering, National University of Singapore, Singapore 117575, SingaporeSchool of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, KoreaSustainable Process Integration Laboratory–SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology–VUT Brno, Technická 2896/2, 616 69 Brno, Czech RepublicSustainable Process Integration Laboratory–SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology–VUT Brno, Technická 2896/2, 616 69 Brno, Czech RepublicDepartment of Mechanical Engineering, University of Engineering and Technology Lahore, Lahore 54000, PakistanResearch Centre for Green Energy, Transport and Building (RCGETB), School of Professional Education and Executive Development, College of Professional & Continuing Education, The Hong Kong Polytechnic University, Kowloon 100077, Hong KongDepartment of Mechanical, Hydraulics and Aeronautics, Universitat Politechnicia De Catalunya (UPC), 08800 Barcelona, SpainSchool of Mechanical, Biomedical and Design Engineering, College of Engineering and Applied Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UKSchool of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, KoreaHeat storage with thermochemical (TC) materials is a promising technology for solar energy storage. In this paper, a solar-driven desiccant evaporative cooling (DEC) system for air-conditioning is proposed, which converts solar heat energy into cooling with built-in daily storage. The system utilises thermochemical heat storage along with the DEC technology in a unique way. Magnesium Chloride (MgCl<sub>2</sub>·6H<sub>2</sub>O) has been used, which serves as both a desiccant and a thermochemical heat storage medium. The system has been designed for the subtropical climate of Lahore, Pakistan, for a bedroom with 8 h of cooling requirements during the night. MATLAB has been employed for modelling the system. The simulation results show that 57 kg of magnesium chloride is sufficient to meet 98.8% of cooling demand for the entire month of July at an elevated cooling requirement. It was found that the cooling output of the system increased with increasing heat exchanger effectiveness. The heat exchangers’ effectiveness was increased from 0.7 to 0.8, with the solar fraction increased from 70.4% to 82.44%. The cooled air supplied to the building meets the fresh air requirements for proper ventilation.https://www.mdpi.com/1996-1073/14/9/2429desiccantevaporativecoolingair conditioningsolarenergy storage |
| spellingShingle | Fahid Riaz Muhammad Abdul Qyyum Awais Bokhari Jiří Jaromír Klemeš Muhammad Usman Muhammad Asim Muhammad Rizwan Awan Muhammad Imran Moonyong Lee Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage Energies desiccant evaporative cooling air conditioning solar energy storage |
| title | Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage |
| title_full | Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage |
| title_fullStr | Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage |
| title_full_unstemmed | Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage |
| title_short | Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage |
| title_sort | design and energy analysis of a solar desiccant evaporative cooling system with built in daily energy storage |
| topic | desiccant evaporative cooling air conditioning solar energy storage |
| url | https://www.mdpi.com/1996-1073/14/9/2429 |
| work_keys_str_mv | AT fahidriaz designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT muhammadabdulqyyum designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT awaisbokhari designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT jirijaromirklemes designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT muhammadusman designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT muhammadasim designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT muhammadrizwanawan designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT muhammadimran designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage AT moonyonglee designandenergyanalysisofasolardesiccantevaporativecoolingsystemwithbuiltindailyenergystorage |