Butterfly House
- by PIMPUN JIROJWONG
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- 2016-06-16 09:25:34
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- International
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- 8678 / EN
New Construction
- Building Type : Isolated or semi-detached house
- Construction Year : 2005
- Delivery year : 2006
- Address 1 - street : 34190 UBON RATCHATHANI, Thailand
- Climate zone : [Aw] Tropical Wet & Dry with dry winter.
- Net Floor Area : 120 m2
- Construction/refurbishment cost : 38 000 €
- Cost/m2 : 316.67 €/m2
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Primary energy need :
82.5 kWhpe/m2.year
(Calculation method : Other )
Data reliability
Self-declared
Stakeholders
Designer
Africvs [email protected] Green building advisorContracting method
Public Private Partnership
Owner approach of sustainability
The building is constructed as a prototype of modern residential building. Passive building techniques are applied to this project such as stack ventilation, radiative cooling, venturi effect, self-shading and building orientation. The building is equipped with thermocouple to study on an effect of these design technique.
Architectural description
2-storey house with 2 bedrooms on the second floor and living space downstairs is made of concrete structure. Upper floor plate is bigger to act as shading for lower one. The distinct feature is a chimney aligned at center of the house to ventilate during the daytime. The roofs are break into 2 pieces and tilted like butterfly wings shape into the chimney to create the pressure different for venturi effect under the roof and gain benefit from night radiation. Moreover, all main functions are categorized as service zone and living zone, oriented and break them by the chimney.
Energy consumption
- 82,50 kWhpe/m2.year
- 86,58 kWhpe/m2.year
- 75,00 kWhfe/m2.year
Envelope performance
- 0,43 W.m-2.K-1
Product
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Chimney

Structural work / Passive system
Vertical cavity for ventilation, most effectively in the daytime
Temperature inside the house is reduced.
Reasons for participating in the competition(s)
The house is a product stemmed from a housing design competition that had a condition to build a real house in order to collect data on thermal comfort. Passive design using radiation cooling, natural ventilation, solar shading, and roof insulation was used effectively.Building candidate in the category

Energy & Hot Climates
Author of the page
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