Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment
Excessive condensation on cooling coils can be costly energy-wise due to humid process air streams. An innovative desiccant cooling system is introduced into an existing hotel in Taoyuan, Taiwan, where the ambient is humid year-round. Rejected heat from the existing cooling system is used as the ene...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-10-01
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| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844022020849 |
| _version_ | 1811192568393760768 |
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| author | Hung-Yi Tsai Chung-Tai Wu |
| author_facet | Hung-Yi Tsai Chung-Tai Wu |
| author_sort | Hung-Yi Tsai |
| collection | DOAJ |
| description | Excessive condensation on cooling coils can be costly energy-wise due to humid process air streams. An innovative desiccant cooling system is introduced into an existing hotel in Taoyuan, Taiwan, where the ambient is humid year-round. Rejected heat from the existing cooling system is used as the energy source to heat the regeneration airstream for dehumidification of the process airstream via a rotary desiccant wheel. The paper develops and validates a numerical model for the heat and mass (moisture) transfer of the rotary desiccant wheel. The validated numerical model is used to simulate the expected performance of the rotary wheel under various conditions and operating strategies. The desiccant wheel’s performance includes the steady-state moisture removal capacity (MRC) and the transient response time to reach steady-state. The examined factors include the ambient temperature and humidity, air flow rate, rotational speed of the wheel, wheel-split, and regeneration airstream temperature. From the simulation results, the paper offers the optimized control strategies for the operation of the rotary desiccant wheel system in the hotel. |
| first_indexed | 2024-04-11T23:54:45Z |
| format | Article |
| id | doaj.art-069d2adad9194511a7a0130886b9bc56 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-11T23:54:45Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-069d2adad9194511a7a0130886b9bc562022-12-22T03:56:23ZengElsevierHeliyon2405-84402022-10-01810e10796Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environmentHung-Yi Tsai0Chung-Tai Wu1Lee-Ming Institute of Technology, TaiwanCorresponding author.; Lee-Ming Institute of Technology, TaiwanExcessive condensation on cooling coils can be costly energy-wise due to humid process air streams. An innovative desiccant cooling system is introduced into an existing hotel in Taoyuan, Taiwan, where the ambient is humid year-round. Rejected heat from the existing cooling system is used as the energy source to heat the regeneration airstream for dehumidification of the process airstream via a rotary desiccant wheel. The paper develops and validates a numerical model for the heat and mass (moisture) transfer of the rotary desiccant wheel. The validated numerical model is used to simulate the expected performance of the rotary wheel under various conditions and operating strategies. The desiccant wheel’s performance includes the steady-state moisture removal capacity (MRC) and the transient response time to reach steady-state. The examined factors include the ambient temperature and humidity, air flow rate, rotational speed of the wheel, wheel-split, and regeneration airstream temperature. From the simulation results, the paper offers the optimized control strategies for the operation of the rotary desiccant wheel system in the hotel.http://www.sciencedirect.com/science/article/pii/S2405844022020849Desiccant wheelEnthalpy recoveryMoisture removal capacity (MRC) |
| spellingShingle | Hung-Yi Tsai Chung-Tai Wu Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment Heliyon Desiccant wheel Enthalpy recovery Moisture removal capacity (MRC) |
| title | Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment |
| title_full | Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment |
| title_fullStr | Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment |
| title_full_unstemmed | Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment |
| title_short | Optimization of a rotary desiccant wheel for enthalpy recovery of air-conditioning in a humid hospitality environment |
| title_sort | optimization of a rotary desiccant wheel for enthalpy recovery of air conditioning in a humid hospitality environment |
| topic | Desiccant wheel Enthalpy recovery Moisture removal capacity (MRC) |
| url | http://www.sciencedirect.com/science/article/pii/S2405844022020849 |
| work_keys_str_mv | AT hungyitsai optimizationofarotarydesiccantwheelforenthalpyrecoveryofairconditioninginahumidhospitalityenvironment AT chungtaiwu optimizationofarotarydesiccantwheelforenthalpyrecoveryofairconditioninginahumidhospitalityenvironment |