Reduction of Energy Consumption by AC due to Air Tightness and Ventilation Strategy in Residences in Hot and Humid Climates

Uno, Toyozo; Hokoi, Shuichi; Ekasiwi, Sri Nastiti N.; Majid, Noor Hanita Abdul

doi:10.3130/jaabe.11.407

Cited by 15 publications

(8 citation statements)

References 6 publications

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“…Recently occupants are likely to use air conditioners in achieving comfortable indoor environment in tropical climate. The reliant on mechanical systems for health and comfort level has increasing the energy consumption in residential building [17]. The buildings sector consumed the large amount of energy during the utilization phase of the building for heating and cooling purposes [18].…”

Section: Indoor Thermal Environment In Residential Buildingmentioning

confidence: 99%

Indoor Thermal Environment in Tropical Climate Residential Building

Jamaludin

Khamidi

Wahab

et al. 2014

E3S Web of Conferences

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Abstract. Indoor thermal environment is one of the criteria in sustainable building. This criterion is important in ensuring a healthy indoor environment for the occupants. The consideration of environmental concerns at the early design stage would effectively integrate the sustainability of the building environment. Global climate changes such as global warming do affect human comfort since people spend most of their time and activities in the building. The increasing of urban population required additional housing for households, as well as places to shop, office and other facilities. Occupants are now more conscious the importance of sustainability for a better quality of life. Good thermal environment is essential for human wellness and comfort. A residential environment will influence residents' health and safety. The global warming increase the earth's temperature and greenhouse emission to the atmosphere cause adverse effects to the outdoor environment. Residential developments modify the materials, structure and energy balance in urban climate effects of human economic activities. As an indoor environment is influenced by the outdoor condition, the factors affecting indoor thermal environment are crucial in improving a comfortable and healthy environment in residential building. The microclimatic of a site such as temperature and relative humidity, and wind movement led to the variation of indoor thermal environment in the building.

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Section: Indoor Thermal Environment In Residential Buildingmentioning

confidence: 99%

Indoor Thermal Environment in Tropical Climate Residential Building

Jamaludin

Khamidi

Wahab

et al. 2014

E3S Web of Conferences

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“…32 Uno et al. 33 investigated the air-tightness and ventilation strategy of tropical houses in Surabaya city in Indonesia. The study based on simulated and measured data revealed that high air-tightness of air-conditioned room in combination with night natural ventilation of non-air-conditioned rooms have produced the best energy saving result.…”

Section: Building Designs and The Role Of Subdivisionsmentioning

confidence: 99%

Pathways for optimal provision of thermal comfort and sustainability of residential housing in hot and humid tropics of Australia – A critical review

Safarova

Halawa

Campbell

et al. 2017

Indoor and Built Environment

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The optimal provision of thermal comfort and energy efficiency for residential housing in the hot and humid tropics presents challenges and opportunities for housing and subdivision designs. Climatic challenges come in the form of high ambient temperature and humidity, especially during the wet season and transition periods. On the other hand, climatic advantages come in the form of breezes coupled with relatively dry air during the dry season, enabling thermal comfort attainment through natural ventilation that employs prevailing breezes. This paper discusses existing design practices for housing and subdivisions in the hot and humid tropics with particular reference to the city of Darwin in Australia’s Northern Territory. This includes several research issues and gaps that have been identified and need to be addressed. The paper also critically assesses how air speed, air temperature and humidity – three of the thermal comfort parameters – play a key role in housing and subdivision design consideration in the hot and humid tropics. In doing so, the paper sheds light on the inadequacy of the current residential energy rating methodology as a tool for assessing tropical housing performance and proposes a new direction for future research to ameliorate these issues for the tropics.

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“…It is proved that the combination can lower the average operative temperature to 28.5°C (Susumu, Satoshi, and Tetsu 2015). Besides, Uno and Hokoi researched on the reduction of energy consumption by AC due to ventilation strategy as well as building airtightness of residences in hot and humid climates by computational fluid dynamics (CFD), pointing out the influence of airtightness and ventilation pattern on reducing energy consumption (Uno et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Performance of passive design strategies in hot and humid regions. Case study: Tangerang, Indonesia

Chen

Mae

Taniguchi

et al. 2020

Journal of Asian Architecture and Building Engineering

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The building sector is one of the largest energy consumers worldwide. Especially in the hothumid Southeast Asian region, this sector consumes about 30% of primary energy demand. This is mainly dominated by air conditioning systems to provide space cooling and dehumidifying. In this paper, three passive design strategies to reduce cooling energy and attain a good daylight environment in an office in Tangerang, Indonesia, will be evaluated using both measurement and simulation methods. Improving thermal insulation, natural ventilation, and solar shading are the strategies studied in this paper. The measurement result shows that the excessive daylight can be reduced by solar shading and the indoor temperature can be reduced by both solar shading and natural ventilation. The result of the simulation also validates the effects of shading and natural ventilation on lowering the indoor temperature and reducing the cooling load. Besides, it is proved that the difference in the building's airtightness can cause an obvious difference in the effect of natural ventilation. There will be a large potential to adopt passive design even in hot and humid regions if the strategies are applied appropriately and good performance of the building, including high airtightness and proper thermal insulation, is guaranteed.

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Reduction of Energy Consumption by AC due to Air Tightness and Ventilation Strategy in Residences in Hot and Humid Climates

Cited by 15 publications

References 6 publications

Indoor Thermal Environment in Tropical Climate Residential Building

Indoor Thermal Environment in Tropical Climate Residential Building

Pathways for optimal provision of thermal comfort and sustainability of residential housing in hot and humid tropics of Australia – A critical review

Performance of passive design strategies in hot and humid regions. Case study: Tangerang, Indonesia

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