Airborne pollutants from fossil fuel burning in electricity generation potentially contribute a n... more Airborne pollutants from fossil fuel burning in electricity generation potentially contribute a number of consequent environmental impacts. In order to indicate the actual costs of energy, a so-called external cost has become of growing concerns internationally. This study aims to evaluate the external costs related to human health degradation resulting from Thai electricity generation produced from fossil fuel which operated
Projected area factors for individual segments of the standing and sedentary human body were mode... more Projected area factors for individual segments of the standing and sedentary human body were modelled for both direct and diffuse solar radiation using detailed 3D geometry and radiation models. The local projected area factors with respect to direct short-wave radiation are a function of the solar azimuth angle (α) between 0°αβ) angles between −90°βρ) ranging between 0ρ
This paper presents the potential of using daylighting for an academic building. Electrical energ... more This paper presents the potential of using daylighting for an academic building. Electrical energy saving is investigated when using daylighting and in this case, electrical energy consumption of lighting system could save more than 50% by using daylighting. For the basis of this study, the CIE standard and Zonal Cavity method is used to analyze the amount of artificial Iighting
Thailand legislated a law called Energy Conservation Promotion Act (ECP Act) in 1992. A set of by... more Thailand legislated a law called Energy Conservation Promotion Act (ECP Act) in 1992. A set of bye-laws identifying designated buildings (DBs) and detailing mandatory requirements for energy conservation for DBs were enacted in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was created by the ECP Act to facilitate implementation of activities sanctioned by the act. The ENCON Fund has
The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and ... more The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and set bye-laws that identify designated buildings (DBs) and detail mandatory requirements for energy conservation for DBs in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was also created to fund energy audits on 1900 DBs. Recently the requirements and procedures for energy conservation in buildings have been revised where system performance requirements for building envelope, lighting, air-conditioning, and hot water generation are adopted. Moreover, the new building energy code (BEC) distinguishes different categories of DBs, provides credit for use of solar energy, and introduces a new option of whole building energy compliance. The authors develop building models from data obtained from energy audit reports and use them to estimate savings on energy and peak demand from future new buildings using forecasted energy and peak demand data from the Load Forecast Subcommittee, a panel tasked to forecast future electric load of Thailand. From a modest level of energy saving in the first year that the code is expected to be enforced, the level of saving rise to over 10% and 20% annually of requirement of target buildings in 6 and 12 years respectively.
The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and ... more The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and set bye-laws that identify designated buildings (DBs) and detail mandatory requirements for energy conservation for DBs in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was also created to fund energy audits on 1900 DBs. Recently the requirements and procedures for energy conservation in buildings
ABSTRACT A theoretical and experimental study has been conducted on the performance of a vertical... more ABSTRACT A theoretical and experimental study has been conducted on the performance of a vertical light pipe that also functions as an air flow stack for night ventilation. The rectangular light pipe of height 3 m and cross-section area 0.0625 m2 surrounded by an air duct of total cross-section area 0.23 m2 is situated above a room of height 3.8 m and floor area 9 m2. Heat transfer from the hot water in the wraparound hot water jacket to the air in the duct is assisted by stainless steel fins. The ventilation of the room, due partly to the buoyancy of the air in the duct and partly to the wind effect, amounted to nearly 10 air changes per hour which is sufficient for passive cooling during cooler night periods. The light pipe has specular reflecting walls. It was found that the transmission of daylight through the light pipe in the middle of a partly cloudy day was sufficient for illuminating the room to general illumination level.
Airborne pollutants from fossil fuel burning in electricity generation potentially contribute a n... more Airborne pollutants from fossil fuel burning in electricity generation potentially contribute a number of consequent environmental impacts. In order to indicate the actual costs of energy, a so-called external cost has become of growing concerns internationally. This study aims to evaluate the external costs related to human health degradation resulting from Thai electricity generation produced from fossil fuel which operated
Projected area factors for individual segments of the standing and sedentary human body were mode... more Projected area factors for individual segments of the standing and sedentary human body were modelled for both direct and diffuse solar radiation using detailed 3D geometry and radiation models. The local projected area factors with respect to direct short-wave radiation are a function of the solar azimuth angle (α) between 0°αβ) angles between −90°βρ) ranging between 0ρ
This paper presents the potential of using daylighting for an academic building. Electrical energ... more This paper presents the potential of using daylighting for an academic building. Electrical energy saving is investigated when using daylighting and in this case, electrical energy consumption of lighting system could save more than 50% by using daylighting. For the basis of this study, the CIE standard and Zonal Cavity method is used to analyze the amount of artificial Iighting
Thailand legislated a law called Energy Conservation Promotion Act (ECP Act) in 1992. A set of by... more Thailand legislated a law called Energy Conservation Promotion Act (ECP Act) in 1992. A set of bye-laws identifying designated buildings (DBs) and detailing mandatory requirements for energy conservation for DBs were enacted in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was created by the ECP Act to facilitate implementation of activities sanctioned by the act. The ENCON Fund has
The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and ... more The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and set bye-laws that identify designated buildings (DBs) and detail mandatory requirements for energy conservation for DBs in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was also created to fund energy audits on 1900 DBs. Recently the requirements and procedures for energy conservation in buildings have been revised where system performance requirements for building envelope, lighting, air-conditioning, and hot water generation are adopted. Moreover, the new building energy code (BEC) distinguishes different categories of DBs, provides credit for use of solar energy, and introduces a new option of whole building energy compliance. The authors develop building models from data obtained from energy audit reports and use them to estimate savings on energy and peak demand from future new buildings using forecasted energy and peak demand data from the Load Forecast Subcommittee, a panel tasked to forecast future electric load of Thailand. From a modest level of energy saving in the first year that the code is expected to be enforced, the level of saving rise to over 10% and 20% annually of requirement of target buildings in 6 and 12 years respectively.
The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and ... more The government of Thailand legislated an Energy Conservation Promotion Act (ECP Act) in 1992 and set bye-laws that identify designated buildings (DBs) and detail mandatory requirements for energy conservation for DBs in 1995. An Energy Conservation Promotion Fund (ENCON Fund) was also created to fund energy audits on 1900 DBs. Recently the requirements and procedures for energy conservation in buildings
ABSTRACT A theoretical and experimental study has been conducted on the performance of a vertical... more ABSTRACT A theoretical and experimental study has been conducted on the performance of a vertical light pipe that also functions as an air flow stack for night ventilation. The rectangular light pipe of height 3 m and cross-section area 0.0625 m2 surrounded by an air duct of total cross-section area 0.23 m2 is situated above a room of height 3.8 m and floor area 9 m2. Heat transfer from the hot water in the wraparound hot water jacket to the air in the duct is assisted by stainless steel fins. The ventilation of the room, due partly to the buoyancy of the air in the duct and partly to the wind effect, amounted to nearly 10 air changes per hour which is sufficient for passive cooling during cooler night periods. The light pipe has specular reflecting walls. It was found that the transmission of daylight through the light pipe in the middle of a partly cloudy day was sufficient for illuminating the room to general illumination level.
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