Building Science 1 - Project 1: Case Study: Proposing Passive Building Design Strategies
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A brief introduction to this project, as a group of 6, we are to choose an existing site and conduct a series of site visit and identify the surrounding environment condition and product a series of analysis which relate to site conditions and climate. Then base on the analysis we have made, we have to improve the thermal comfort of the building by passive design.
Our chosen site is a residential house located at Sierramas, Sungai Buluh, Selangor. The space that we chosen are bedroom located at 1st floor and living room at ground floor, this 2 spaces are the hottest area among all during day time. The site condition is consider as moderate since it is located at a higher ground level and with relatively strong and huge amount of wind, the humidity level is moderate, as for air ventilation, both spaces are nicely ventilated since it has functioning windows on both exposed wall and are facing toward the prevailing wind direction with nice intake and outlet. The only downside is that it lack of shading, the surrounding building is quite a distance and with less greenery. But there is a pool at rear which can also act as a evaporative cooling which in contrast with the lack of greenery. The causes to the high heat gain is mostly through the windows opening and walls which is not sheltered.
Based on the OTTV calculation, we've found that the wall on north-east is the most heat gained and with very bad shelter. The passive design we applied into it is by extending the existing overhang roof to a level which it shelter the wall until 3pm, when the sun get below the angle of the roof, but the hottest temperature of the sunlight is until 3pm, after that it started to decrease so is shouldn't be a problem. Next is by adding window shading device to shade the window and improve the windows' glass to low-E glass. By adding a green roof on the flat roof above the 1st floor to shelter the roof and for evaporative cooling since the plants is constantly releasing water.
This project is an eye opening experience for me cause I learnt a lot from it which I never thought of. First thing is the calculating the OTTV (Overall Thermal Transfer Value) which allow me to estimate the amount of heat gain and be able to predict the temperature that it will get, which is very useful in order to design a cool building. I also learnt that how to read sun chat and wind rose and predict all the environment condition and design accordingly. Besides that, the passive design strategy which is very handy now and for future because the world is slowing changing towards passive design, first is providing a better living space and second is to save and conserve energy.
Our chosen site is a residential house located at Sierramas, Sungai Buluh, Selangor. The space that we chosen are bedroom located at 1st floor and living room at ground floor, this 2 spaces are the hottest area among all during day time. The site condition is consider as moderate since it is located at a higher ground level and with relatively strong and huge amount of wind, the humidity level is moderate, as for air ventilation, both spaces are nicely ventilated since it has functioning windows on both exposed wall and are facing toward the prevailing wind direction with nice intake and outlet. The only downside is that it lack of shading, the surrounding building is quite a distance and with less greenery. But there is a pool at rear which can also act as a evaporative cooling which in contrast with the lack of greenery. The causes to the high heat gain is mostly through the windows opening and walls which is not sheltered.
Based on the OTTV calculation, we've found that the wall on north-east is the most heat gained and with very bad shelter. The passive design we applied into it is by extending the existing overhang roof to a level which it shelter the wall until 3pm, when the sun get below the angle of the roof, but the hottest temperature of the sunlight is until 3pm, after that it started to decrease so is shouldn't be a problem. Next is by adding window shading device to shade the window and improve the windows' glass to low-E glass. By adding a green roof on the flat roof above the 1st floor to shelter the roof and for evaporative cooling since the plants is constantly releasing water.
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| Presentation Board 1 |
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| Presentation Board 2 |
This project is an eye opening experience for me cause I learnt a lot from it which I never thought of. First thing is the calculating the OTTV (Overall Thermal Transfer Value) which allow me to estimate the amount of heat gain and be able to predict the temperature that it will get, which is very useful in order to design a cool building. I also learnt that how to read sun chat and wind rose and predict all the environment condition and design accordingly. Besides that, the passive design strategy which is very handy now and for future because the world is slowing changing towards passive design, first is providing a better living space and second is to save and conserve energy.
Categories: B-Sci1, SABD Sem 3
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