Study of an integrated personalized ventilation and local fan-induced active chilled beam air conditioning system in hot and humid climate

2018 ◽  
Vol 11 (4) ◽  
pp. 787-801 ◽  
Author(s):  
Chandra Sekhar ◽  
Long Zheng
Keyword(s):  
Air Conditioning ◽  
Humid Climate ◽  
Air Conditioning System ◽  
Hot And Humid Climate ◽  
Personalized Ventilation

Analysis of Solar Organic Rankine Cycle for a Building in Hot and Humid Climate

2011 ◽  
Author(s):  
Rambod Rayegan ◽  
Yong X. Tao
Keyword(s):  
Air Conditioning ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Geothermal System ◽  
Commercial Building ◽  
Humid Climate ◽  
Medium Temperature ◽  
Air Conditioning System ◽  
System Requirements ◽  
Hot And Humid Climate

The objective of this paper is to model and analyze the solar Organic Rankine Cycle (ORC) engine for a geothermal air-conditioned net zero-energy building (NZEB) in a hot and humid climate. In the authors’ previous work, 11 fluids have been suggested to be employed in solar ORCs that use low or medium temperature solar collectors. In this paper, the system requirements needed to maintain the electricity demand of a commercial building have been compared for the 11 suggested fluids. The solar collector loop, building, and geothermal air conditioning system are modeled using TRNSYS with the required input for the ORC system derived from the previous study. The commercial building is located in Pensacola of Florida and is served by grid power. The building has been equipped with two geothermal heat pump units and a vertical closed loop system. The performance of the geothermal system has been monitored for 3 weeks. Monitoring data and available electricity bills of the building have been employed to calibrate the building and geothermal air conditioning system simulation. Simulation has been repeated for Miami and Houston in order to evaluate the effect of the different solar radiations on the system requirements.

Optimal Collector Type and Temperature in a Solar Organic Rankine Cycle System for Building-Scale Power Generation in Hot and Humid Climate

2012 ◽  
Vol 135 (1) ◽  
Author(s):  
Rambod Rayegan ◽  
Yong X. Tao
Keyword(s):  
Power Generation ◽  
Solar Collector ◽  
Air Conditioning ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Commercial Building ◽  
Humid Climate ◽  
Air Conditioning System ◽  
System Requirements ◽  
Hot And Humid Climate

The objective of this paper is to determine the optimal solar collector type and temperature of a building-scale power generation system employing solar organic Rankine cycle (ORC) engine for a geothermal air-conditioned net zero-energy building (NZEB) in a hot and humid climate. In the authors' previous work, 11 fluids have been suggested to be employed in solar ORCs that use low-temperature or medium-temperature solar collectors. In this paper, the system requirements needed to maintain the electricity demand of a commercial building have been compared for the 11 suggested fluids. The solar collector loop, building, and geothermal air conditioning system are modeled using TRNSYS with the required input for the ORC system derived from the previous study. The commercial building is located in Pensacola of Florida and is served by grid power. The building has been equipped with two geothermal heat pump units and a vertical closed loop system. The performance of the geothermal system has been monitored for 3 weeks. Monitoring data and available electricity bills of the building have been employed to calibrate the building and geothermal air conditioning system simulation. Simulation has been repeated for Miami and Houston in order to evaluate the effect of the different solar radiations on the system requirements.

Findings of Personalized Ventilation Studies in a Hot and Humid Climate

2005 ◽  
Vol 11 (4) ◽  
pp. 603-620 ◽  
Author(s):  
S. C. Sekhar ◽  
N. Gong ◽  
K. W. Tham ◽  
K. W. Cheong ◽  
A. K. Melikov ◽  
...  
Keyword(s):  
Humid Climate ◽  
Hot And Humid Climate ◽  
Personalized Ventilation ◽  
Ventilation Studies

Investigation of the PMV and TSV Models of Thermal Comfort in Air-Conditioned University Classrooms in Malaysia

2016 ◽  
Vol 819 ◽  
pp. 207-211 ◽  
Author(s):  
Nur Atikah Shaari ◽  
Sheikh Ahmad Zaki ◽  
Mohamed Sukri Mat Ali ◽  
Azli Abd Razak
Keyword(s):  
Thermal Comfort ◽  
Field Study ◽  
Air Conditioning ◽  
Thermal Sensation ◽  
Humid Climate ◽  
Predicted Mean Vote ◽  
Hot And Humid Climate ◽  
University Classrooms ◽  
Adaptation Method

A field study was done on the thermal comfort of seven air-conditioned university classrooms in the hot and humid climate of Malaysia. The aims of this paper are to investigate the perceptions of thermal comfort and the adaptation method of students in air-conditioned classrooms. In total, 189 respondents from the classrooms completed the questionnaire. A comparison was made between the Predicted Mean Vote (PMV) and the Thermal Sensation Vote (TSV) and it was found that the TSV values tended to be more sensitive than the PMV values. A variety of adaptation methods of the occupants in the classrooms are also presented. It was found that most of the occupants preferred to change the air-conditioning thermostat, probably because all the occupants had the opportunity to control the thermostat.

scholarly journals An Experimental Analysis on Energy Savings of VAV Systems in Hot and Humid Area

1997 ◽  
Author(s):  
K. H. Yang ◽  
S. K. Lee ◽  
H. C. Yin ◽  
Y. S. Wang ◽  
M. M. Ting
Keyword(s):  
Air Conditioning ◽  
Energy Savings ◽  
Building Energy ◽  
Second Phase ◽  
Humid Climate ◽  
Air Conditioning System ◽  
Variable Air Volume ◽  
Air Volume ◽  
Scale Experiment ◽  
Great Energy

Variable Air Volume (VAV) air-conditioning system presents great energy savings potential especially in hot and humid climate and has been recommended in the Building Energy Code of Taiwan since 1996. Simulation results indicated that the annual energy savings of VAV system in typical commercial buildings in Taiwan could be up to 70% of total fan power. A full-scale experiment has been performed which validated this result successfully, and would be adapted with the PACS index in the second phase of national Building Energy Code in Taiwan.

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