Comparative assessment of vernacular passive cooling techniques for improving indoor thermal comfort of modern terraced houses in hot–humid climate of Malaysia

Solar Energy ◽  
2015 ◽  
Vol 114 ◽  
pp. 229-258 ◽  
Author(s):  
Doris Hooi Chyee Toe ◽  
Tetsu Kubota
Keyword(s):  
Thermal Comfort ◽  
Comparative Assessment ◽  
Passive Cooling ◽  
Humid Climate ◽  
Indoor Thermal Comfort ◽  
Hot Humid Climate

scholarly journals An Investigation on Indoor Temperature of Modern Double Storey House with Adapted Common Passive Design Strategies of Malay Traditional House

2021 ◽  
Vol 29 (2) ◽  
Author(s):  
Maryam Qays Oleiwi ◽  
Mohd Farid Mohamed
Keyword(s):  
Thermal Comfort ◽  
Natural Ventilation ◽  
Building Envelope ◽  
Simulation Software ◽  
Passive Cooling ◽  
Design Strategies ◽  
Housing Type ◽  
Humid Climate ◽  
Cooling Strategies ◽  
Hot Humid Climate

Past years have witnessed the popularity of traditional Malay house as a common housing type in Malaysia. However, double-storey house has become one of the common types of low-rise housing in Malaysia. Several passive cooling strategies have been adopted to cope with the hot-humid climate of Malaysia. In this study, the thermal comfort of a double-storey house was examined when different passive cooling strategies that were adopted from traditional Malay houses were applied using IES-VE 2019 building simulation software. The simulation was conducted for various design strategies such as changing concrete roof tiles to clay roof tiles, adding two small openings to the attic, removing the ceiling between the upper floor and the attic, and extending the overhang by 50% of its length for all the four facades. All these strategies were tested and compared between full-day natural ventilation and without any ventilation. The thermal comfort of these strategies was graphically defined based on the operative temperature. These analyses revealed that protecting the building envelope by extending the overhang by 50% of its length for all the four facades could ensure the best thermal comfort is achieved compared to other selected strategies. Recommendations for further studies are also outlined in this paper.

scholarly journals COMPARATIVE STUDY ON THE THERMAL ENVIRONMENTAL RESPONSES OF INDIGENOUS BAMBOO AND MODERN BRICK HOUSES IN HOT-HUMID CLIMATE OF MALAYSIA

2016 ◽  
Vol 78 (11) ◽  
Author(s):  
Nur Dalilah Dahlan ◽  
Amirhosein Ghaffarianhoseini
Keyword(s):  
Thermal Comfort ◽  
Building Materials ◽  
Humid Climate ◽  
Night Time ◽  
Indoor Thermal Comfort ◽  
Environmental Responses ◽  
American Society ◽  
House Design ◽  
Hot Humid Climate ◽  
East Asia Region

Vernacular houses using indigenous building materials have shown to be a good strategy for sustainable energy consumption without compensating the occupant’s indoor thermal comfort. Bamboo has been identified as the most used building material for vernacular houses in South-East Asia region. However, very little investigation has been conducted to study the passive performance of a bamboo house in maintaining indoor thermal comfort. This study compares the indoor microclimate conditions using thermal comfort Predicted Mean Vote and Predicted Percentage of Dissatisfied models (PMV-PPD) developed by American Society Heating, Refrigerating and Air-conditioning Engineers  (ASHRAE) between indigenous bamboo house (H1) and modern  brick house (H2) at a village located in the Ulu Gombak Forest Reserve, Selangor. Observations on environmental factors and predicted thermal comfort satisfaction level between day and night times were also taken into consideration. The findings suggest that the use of bamboo plus other vernacular house design features such as raising a house on stilts, located on hilly site and providing air permeability in H1 can lead to a thermally comfortable indoor environment, particularly during night time.

scholarly journals The assesment of thermal comfort of sustainable modifying Rumoh Aceh in hot humid climate

2021 ◽  
Vol 881 (1) ◽  
pp. 012052
Author(s):  
E Meutia ◽  
E N Rauzi ◽  
Z Sahputra ◽  
D Maryana
Keyword(s):  
Thermal Comfort ◽  
Energy Use ◽  
Thermal Environment ◽  
Passive Cooling ◽  
Humid Climate ◽  
Traditional Architecture ◽  
Sense Of Satisfaction ◽  
Hot Humid Climate ◽  
The Tropics ◽  
The Impact

Abstract The climates of countries in the tropics tend to have high temperatures and humidity, and intense solar insulation. This condition gives the impact of discomfort for humans who are in the building. Implementing a passive cooling strategy can reduce energy use. Traditional architecture is one of the buildings that has been believed to apply natural cooling as a passive cooling design strategy. Based on several previous studies on the application of passive designs to obtain thermal comfort in the room, this study was conducted to assess the thermal comfort of Modifying Rumoh Aceh, which has not been widely studied. This study uses a direct measurement method in the field using an anemometer to measure temperature and airflow velocity. An Infrared/Thermometer Gun is also used to measure the surface temperature of materials (walls, roofs, and floors). Using the Climate Consultant Software to obtain annual climate condition data, AndrewMarsh 3-D Sunpath was also used to assess the orientation of buildings. Measurements were carried out for 3 days on 15 samples of Modifying Rumoh Aceh in Gampong Jawa, Kutaraja sub-district, Banda Aceh. The results obtained indicate an increase in room temperature by 7ºC from the standard comfort temperature based on SNI. The human ability to adapt to the environment can be seen in the perception of the Gampong Jawa community in accepting changes in the thermal environment by 47% with a sense of satisfaction. However, further research is needed to obtain a value for the level of satisfaction of the thermal environment in the tropics area.

scholarly journals Indoor thermal comfort assessment in office buildings in hot-humid climate

2021 ◽  
Vol 1144 (1) ◽  
pp. 012029
Author(s):  
F Abass ◽  
L H Ismail ◽  
I A Wahab ◽  
W A Mabrouk ◽  
H Kabrein
Keyword(s):  
Thermal Comfort ◽  
Office Buildings ◽  
Humid Climate ◽  
Indoor Thermal Comfort ◽  
Hot Humid Climate

Flex House

2011 ◽  
Author(s):  
Stanley Russell ◽  
Mark Weston ◽  
Yogi Goswami ◽  
Matthew Doll
Keyword(s):  
Closed System ◽  
State Of The Art ◽  
Building Envelope ◽  
Passive Cooling ◽  
Optimum Level ◽  
Seasonal Temperature ◽  
Zero Energy ◽  
Humid Climate ◽  
Heat Gain ◽  
Hot Humid Climate

Flex House is a flexible, modular, pre-fabricated zero energy building that can be mass produced and adapted easily to a variety of site conditions and plan configurations. The key factor shaping the design is central Florida’s hot humid climate and intense solar radiation. Flex house combines the wisdom of vernacular Florida houses with state of the art Zero Energy House technologies (ZEH.) A combined system of photovoltaic panels and solar thermal concentrating panels take advantage of the region’s abundant insolation in providing clean renewable energy for the house. Conservation is achieved with state of the art mechanical systems and innovative liquid desiccant dehumidification technology along with highly efficient lighting and appliances. The hybrid nature of the Flex house allows for both an open and closed system to take advantage of the seasonal temperature variation. Central Florida buildings can conserve energy by allowing natural ventilation to take advantage of passive cooling in the mild months of the year and use a closed system to utilize mechanical cooling when temperatures are too high for passive cooling strategies. The building envelope works equally well throughout the year combining an optimum level of insulation, resistance to air infiltration, transparency for daylight, and flexibility that allows for opening and closing of the house. Flex House is designed with a strong connection between interior spaces and the outdoors with carefully placed fenestration and a movable wall system which enables the house to transform in response to the temperature variations throughout the year. The house also addresses the massive heat gain that occurs through the roof, which can generate temperatures in excess of 140 degrees. Flex House incorporates a parasol-like outer structure that shades the roof, walls and courtyard minimizing heat gain through the building envelope. To be implemented on a large scale, ZEH must be affordable for people earning a moderate income. Site built construction is time consuming and wasteful and results in higher costs. Building homes in a controlled environment can reduce material waste, and construction costs while increasing efficiency. Pre-fabricating Flex House minimizes preparation time, waste and safety concerns and maximizes economy, quality control, efficiency and safety during the construction process. This paper is an account of the design and construction of Flex House, a ZEH for central Florida’s hot humid climate.

Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate

2020 ◽  
Vol 223 ◽  
pp. 110072 ◽  
Author(s):  
Ng Wai Tuck ◽  
Sheikh Ahmad Zaki ◽  
Aya Hagishima ◽  
Hom Bahadur Rijal ◽  
Fitri Yakub
Keyword(s):  
Thermal Comfort ◽  
Humid Climate ◽  
Hot Humid Climate

scholarly journals Building and Urban Cooling Performance Indexes of Wetted and Green Roofs—A Case Study under Current and Future Climates

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6192
Author(s):  
Madi Kaboré ◽  
Emmanuel Bozonnet ◽  
Patrick Salagnac
Keyword(s):  
Thermal Comfort ◽  
Emission Scenario ◽  
Green Roof ◽  
Heat Fluxes ◽  
Temperate Climate ◽  
Passive Cooling ◽  
Thermal Discomfort ◽  
Indoor Thermal Comfort ◽  
Performance Indexes ◽  
The Impact

We developed and studied key performance indexes and representations of energy simulation heat fluxes to evaluate the performance of the evaporative cooling process as a passive cooling technique for a commercial building typology. These performance indexes, related to indoor thermal comfort, energy consumption and their interactions with their surrounding environments, contribute to understanding the interactions between the urban climate and building for passive cooling integration. We compare the performance indexes for current and future climates (2080), according to the highest emission scenario A2 of the Special Report on Emission Scenario (SRES). Specific building models were adapted with both green roof and wetted roof techniques. The results show that summer thermal discomfort will increase due to climate change and could become as problematic as winter thermal discomfort in a temperate climate. Thanks to evapotranspiration phenomena, the sensible heat contribution of the building to the urban heat island (UHI) is reduced for both current and future climates with a green roof. The performance of the vegetative roof is related to the water content of the substrate. For wetted roofs, the impacts on heat transferred to the surrounding environment are higher for a Mediterranean climate (Marseille), which is warmer and drier than the Paris climate studied (current and future climates). The impact on indoor thermal comfort depends on building insulation, as demonstrated by parametric studies, with higher effects for wetted roofs.

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