New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems
One of the most promising solution for the current energy crisis is recovering lost energy. Indeed, in many energy systems the percentage of energy loss could exceed 60%. To put it another way, in some applications, recovering energy is as much beneficial as finding new source of energy. Moreover, f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-09-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X17301077 |
| _version_ | 1811218326657957888 |
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| author | Mohamad Ramadan Samer Ali Hasan Bazzi Mahmoud Khaled |
| author_facet | Mohamad Ramadan Samer Ali Hasan Bazzi Mahmoud Khaled |
| author_sort | Mohamad Ramadan |
| collection | DOAJ |
| description | One of the most promising solution for the current energy crisis is recovering lost energy. Indeed, in many energy systems the percentage of energy loss could exceed 60%. To put it another way, in some applications, recovering energy is as much beneficial as finding new source of energy. Moreover, finding new concepts of energy recovery offers wider horizons to reduce energy consumption. The present work investigates new energy recovery system that combines heat recovery and energy generation using thermoelectric generators (TEG). The proposed system is a triple Thermoelectric-Energy recovery coupled system that from one hand allows to recover the heat of condenser and to reuse the lost energy of exhaust airflow of HVAC all-air system and from the other hand it permits to produce green electricity using TEG. The air of the condenser is considered the heat source, whereas the exhaust air flow is utilized as cooler. To proceed, a mathematical tool is first developed it allows to thermally simulate TEGs for different boundary conditions. The heat and cold source are then modeled where the heat transfer coefficient is determined from the Nusselt number. Furthermore, a parametric analysis is then conducted to evaluate the power generated with the new concept when the air velocity of the exhaust airflow and that of the condenser vary. It is shown that for a space cooling load of 100 kW, a 40×40 cm2 flat plate is capable to generate 90 W of electrical power. |
| first_indexed | 2024-04-12T07:08:42Z |
| format | Article |
| id | doaj.art-db9d51fba6c34063bef7f24f726154d3 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-12T07:08:42Z |
| publishDate | 2017-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-db9d51fba6c34063bef7f24f726154d32022-12-22T03:42:44ZengElsevierCase Studies in Thermal Engineering2214-157X2017-09-0110C15416010.1016/j.csite.2017.05.007New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systemsMohamad Ramadan0Samer Ali1Hasan Bazzi2Mahmoud Khaled3School of Engineering, Lebanese International University LIU, PO Box 146404 Beirut, LebanonSchool of Engineering, Lebanese International University LIU, PO Box 146404 Beirut, LebanonSchool of Engineering, Lebanese International University LIU, PO Box 146404 Beirut, LebanonSchool of Engineering, Lebanese International University LIU, PO Box 146404 Beirut, LebanonOne of the most promising solution for the current energy crisis is recovering lost energy. Indeed, in many energy systems the percentage of energy loss could exceed 60%. To put it another way, in some applications, recovering energy is as much beneficial as finding new source of energy. Moreover, finding new concepts of energy recovery offers wider horizons to reduce energy consumption. The present work investigates new energy recovery system that combines heat recovery and energy generation using thermoelectric generators (TEG). The proposed system is a triple Thermoelectric-Energy recovery coupled system that from one hand allows to recover the heat of condenser and to reuse the lost energy of exhaust airflow of HVAC all-air system and from the other hand it permits to produce green electricity using TEG. The air of the condenser is considered the heat source, whereas the exhaust air flow is utilized as cooler. To proceed, a mathematical tool is first developed it allows to thermally simulate TEGs for different boundary conditions. The heat and cold source are then modeled where the heat transfer coefficient is determined from the Nusselt number. Furthermore, a parametric analysis is then conducted to evaluate the power generated with the new concept when the air velocity of the exhaust airflow and that of the condenser vary. It is shown that for a space cooling load of 100 kW, a 40×40 cm2 flat plate is capable to generate 90 W of electrical power.http://www.sciencedirect.com/science/article/pii/S2214157X17301077TEGHeat recoveryEnergy recoveryAll air systemExhaust AirHVACCondensor |
| spellingShingle | Mohamad Ramadan Samer Ali Hasan Bazzi Mahmoud Khaled New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems Case Studies in Thermal Engineering TEG Heat recovery Energy recovery All air system Exhaust Air HVAC Condensor |
| title | New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems |
| title_full | New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems |
| title_fullStr | New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems |
| title_full_unstemmed | New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems |
| title_short | New hybrid system combining TEG, condenser hot air and exhaust airflow of all-air HVAC systems |
| title_sort | new hybrid system combining teg condenser hot air and exhaust airflow of all air hvac systems |
| topic | TEG Heat recovery Energy recovery All air system Exhaust Air HVAC Condensor |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X17301077 |
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