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Applying outdoor environment to develop health, comfort, and energy saving in the office in hot-humid climate.

Chen R, Sung WP, Chang HC, Chi YR - ScientificWorldJournal (2013)

Bottom Line: The experimental and analysis results of this research reveal that most of the office occupants preferred a cooler environment with a lower temperature.After improvement, a lower temperature (approximately 21.2-23.9°C) indirectly reduces humidity, thereby making the occupants comfortable.Increasing air velocity to 0.1~0.15 m/s, the carbon dioxide concentrations decrease below the requirement of the WHO.

View Article: PubMed Central - PubMed

Affiliation: College of Civil and Architectural Engineering, Wuyi University, Wuyi, Fujian 354300, China.

ABSTRACT
A human life demand set to emerge in the future is the achievement of sustainability by maintaining a comfortable indoor environment without excessive reliance on energy-consuming air conditioners. The major research processes in this study are: (1) measuring indoor air quality and thermal comfort to evaluate the comfort of an indoor environment; (2) implementing questionnaire survey analysis to explore people's environmental self-perceptions and conducting a meta-analysis of the measurement results for air quality and physical aspects; and (3) constructing an indoor monitoring and management system. The experimental and analysis results of this research reveal that most of the office occupants preferred a cooler environment with a lower temperature. Additionally, because the summers in Taiwan are humid and hot, the occupants of an indoor space tend to feel uncomfortable because of the high humidity and poor indoor air quality. Therefore, Variable Air Volume (VAV), two air intakes, and exhaust plant are installed to improve indoor environment. After improvement, a lower temperature (approximately 21.2-23.9°C) indirectly reduces humidity, thereby making the occupants comfortable. Increasing air velocity to 0.1~0.15 m/s, the carbon dioxide concentrations decrease below the requirement of the WHO. Ninety-five percent of the workers corresponded to the standard comfort zone after this improvement.

Show MeSH
The electricity consumption of existing and improved air-conditioning systems.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3842067&req=5

fig10: The electricity consumption of existing and improved air-conditioning systems.

Mentions: The air-conditioning energy conservation and improvement have been categorized in the following three parts: (1) the installation of inverters and cold-water air conditioners; (2) the installation of three PAHs with 24 outputs and the allocation of 5 periods for increasing the indoor air exchange rates and reducing discomfort; and (3) the installation of a building energy management system (BEMS) to monitor the energy consumption of cold-water air conditioners, cooling towers, and compressors to control the energy efficiency of systems and enhance energy saving rates. According to the energy saving rates measured by electricity monitoring, the suggested improvements could save 244936 kWh every year (Table 4 and Figures 10 and 11).


Applying outdoor environment to develop health, comfort, and energy saving in the office in hot-humid climate.

Chen R, Sung WP, Chang HC, Chi YR - ScientificWorldJournal (2013)

The electricity consumption of existing and improved air-conditioning systems.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3842067&req=5

fig10: The electricity consumption of existing and improved air-conditioning systems.
Mentions: The air-conditioning energy conservation and improvement have been categorized in the following three parts: (1) the installation of inverters and cold-water air conditioners; (2) the installation of three PAHs with 24 outputs and the allocation of 5 periods for increasing the indoor air exchange rates and reducing discomfort; and (3) the installation of a building energy management system (BEMS) to monitor the energy consumption of cold-water air conditioners, cooling towers, and compressors to control the energy efficiency of systems and enhance energy saving rates. According to the energy saving rates measured by electricity monitoring, the suggested improvements could save 244936 kWh every year (Table 4 and Figures 10 and 11).

Bottom Line: The experimental and analysis results of this research reveal that most of the office occupants preferred a cooler environment with a lower temperature.After improvement, a lower temperature (approximately 21.2-23.9°C) indirectly reduces humidity, thereby making the occupants comfortable.Increasing air velocity to 0.1~0.15 m/s, the carbon dioxide concentrations decrease below the requirement of the WHO.

View Article: PubMed Central - PubMed

Affiliation: College of Civil and Architectural Engineering, Wuyi University, Wuyi, Fujian 354300, China.

ABSTRACT
A human life demand set to emerge in the future is the achievement of sustainability by maintaining a comfortable indoor environment without excessive reliance on energy-consuming air conditioners. The major research processes in this study are: (1) measuring indoor air quality and thermal comfort to evaluate the comfort of an indoor environment; (2) implementing questionnaire survey analysis to explore people's environmental self-perceptions and conducting a meta-analysis of the measurement results for air quality and physical aspects; and (3) constructing an indoor monitoring and management system. The experimental and analysis results of this research reveal that most of the office occupants preferred a cooler environment with a lower temperature. Additionally, because the summers in Taiwan are humid and hot, the occupants of an indoor space tend to feel uncomfortable because of the high humidity and poor indoor air quality. Therefore, Variable Air Volume (VAV), two air intakes, and exhaust plant are installed to improve indoor environment. After improvement, a lower temperature (approximately 21.2-23.9°C) indirectly reduces humidity, thereby making the occupants comfortable. Increasing air velocity to 0.1~0.15 m/s, the carbon dioxide concentrations decrease below the requirement of the WHO. Ninety-five percent of the workers corresponded to the standard comfort zone after this improvement.

Show MeSH