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A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics

In recent decades, the heating, ventilating, and air conditioning (IIVAC) system has been introduced to the worldwide for air treatment in a closed room, office, and building. As a matter of fact, it holds a rather important rule especially in multi-floors building to supply clean, fresh, and comfor...

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Main Author: Lai, Chien Sin
Format: Thesis
Language:English
Published: 2015
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.intimal.edu.my/114/1/BMEGI%20-%2054.pdf
http://eprints.intimal.edu.my/114/
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spelling my-inti-eprints.1142016-04-06T09:45:40Z http://eprints.intimal.edu.my/114/ A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics Lai, Chien Sin TJ Mechanical engineering and machinery In recent decades, the heating, ventilating, and air conditioning (IIVAC) system has been introduced to the worldwide for air treatment in a closed room, office, and building. As a matter of fact, it holds a rather important rule especially in multi-floors building to supply clean, fresh, and comfortable air to the occupants in the building. Convectional overhead (OH) air conditioning system is found getting eliminated from the industry due to high energy consumption, low ventilating efficiency, over cooling or heating. On the other hand, under-floor air distribution (LJFAD) system is gaining more attention in the recent years due to its lower energy usage feature. TM Tower is believed as the first building which implemented UPAD system in Malaysia. However, according to some previous researches done, there is a need of improvement for the current UPAD design in order to adopt it in the tropics. In this paper, the impact of supply air temperature on the overall thermal comfort and energy consumption are studied. TRNSYS Simulation Software is used to investigate the effect of different supply air temperature on the conditioned space’s thermal condition and compute the cooling load that accountable. Besides that, FIoEFD acts a supporting tool in this project to provide a visual result for local mean age (LMA) of indoor air which indicates the air quality. ASHRAE Standard 55 and Standard 62 in HVAC system design arc used as the guidelines throughout the project. It is revealed that as the supply air temperature increases, the overall indoor air temperature became higher, while the relative humidity became lower on the other hand. Also, the total cooling load of the system responds to the increasing supply air temperature in a proportional way. Supply air temperature of 20°C had seemed to be optimum value of providing acceptable thermal comfort and saving energy at the same time. 2015 Thesis NonPeerReviewed text en http://eprints.intimal.edu.my/114/1/BMEGI%20-%2054.pdf Lai, Chien Sin (2015) A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics. Other thesis, INTI International University.
institution INTI International University
building INTI Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider INTI International University
content_source INTI Institutional Repository
url_provider http://eprints.intimal.edu.my
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Lai, Chien Sin
A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics
description In recent decades, the heating, ventilating, and air conditioning (IIVAC) system has been introduced to the worldwide for air treatment in a closed room, office, and building. As a matter of fact, it holds a rather important rule especially in multi-floors building to supply clean, fresh, and comfortable air to the occupants in the building. Convectional overhead (OH) air conditioning system is found getting eliminated from the industry due to high energy consumption, low ventilating efficiency, over cooling or heating. On the other hand, under-floor air distribution (LJFAD) system is gaining more attention in the recent years due to its lower energy usage feature. TM Tower is believed as the first building which implemented UPAD system in Malaysia. However, according to some previous researches done, there is a need of improvement for the current UPAD design in order to adopt it in the tropics. In this paper, the impact of supply air temperature on the overall thermal comfort and energy consumption are studied. TRNSYS Simulation Software is used to investigate the effect of different supply air temperature on the conditioned space’s thermal condition and compute the cooling load that accountable. Besides that, FIoEFD acts a supporting tool in this project to provide a visual result for local mean age (LMA) of indoor air which indicates the air quality. ASHRAE Standard 55 and Standard 62 in HVAC system design arc used as the guidelines throughout the project. It is revealed that as the supply air temperature increases, the overall indoor air temperature became higher, while the relative humidity became lower on the other hand. Also, the total cooling load of the system responds to the increasing supply air temperature in a proportional way. Supply air temperature of 20°C had seemed to be optimum value of providing acceptable thermal comfort and saving energy at the same time.
format Thesis
author Lai, Chien Sin
author_facet Lai, Chien Sin
author_sort Lai, Chien Sin
title A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics
title_short A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics
title_full A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics
title_fullStr A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics
title_full_unstemmed A Study on a Real Case Indoor Thermal Environment Installed with an Under-Floor Air Distribution System in the Tropics
title_sort study on a real case indoor thermal environment installed with an under-floor air distribution system in the tropics
publishDate 2015
url http://eprints.intimal.edu.my/114/1/BMEGI%20-%2054.pdf
http://eprints.intimal.edu.my/114/
_version_ 1644541097932750848
score 13.211869

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