thermally comfortable passive house for tropical uplands pdf
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Hi am lavanya i would like to get details on thermally comfortable passive house for tropical uplands pdf
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The passive house (German: Passivhaus) is a rigorous and voluntary standard for energy efficiency in a building, reducing its ecological footprint. The result is ultra low energy buildings that require little energy for heating or cooling. A similar standard, MINERGIE-P, is used in Switzerland. The standard is not limited to residential properties; Several office buildings, schools, nurseries and a supermarket have also been built to the norm. The passive design is not an accessory or supplement to the architectural design, but a design process that is integrated with the architectural design. Although it applies mostly to new buildings, it has also been used for renovations.


Estimates of the number of Passivhaus buildings worldwide at the end of 2008 ranged from 15,000 to 20,000 structures. As of August 2010, there were approximately 25,000 certified structures of all types in Europe, while in the United States there were only 13, with a few dozen more under construction. The vast majority of passive structures have been built in German-speaking countries and Scandinavia.

Initially, an extensive bibliographic survey was conducted to determine the passive techniques desirable for the tropical highlands. The technique used here was to establish comfort zones for the tropical highlands and investigate the effect of various passive features on thermal comfort such as the orientation of buildings, roof, windows and the number of air changes. The thermal effect of the various design options was established by computer simulations carried out with the help of DEROB-LTH. Outdoor weather conditions were obtained from the Sri Lanka Meteorological Department. The climatic data required were maximum and minimum temperatures, hours of sunshine and relative humidity. The software was validated for tropical highland areas using real measurements. As a result of this detailed study, a set of rules was developed along with a conceptual house. It is shown that this conceptual house could give a very good improvement to the minimum internal temperatures when the passive characteristics given in the guidelines were adopted. Rooms that have a top floor In a part of it must be built except under geological and structural circumstances, financial problems or any other circumstance. Since the crest direction effect is insignificant, the crest of the roof should be directed to north-south or east-west. The new GI sheets are highly recommended as a roofing material. If asbestos sheets are used, they should be painted in a dark color as recommended below. Burned clay tiles should be strictly avoided. The orientation of the house should be facing south or north. With this, the transfer of heat in the house through glazing can be reduced. Therefore, overheating can be avoided. All ceilings and walls should be painted in dark color which has higher absoptance values. Colors like Green, Blue and Gray are recommended. All openings, doors and windows of the house must be closed at night. Curtains should be provided from the top of the window, including the grille. Every effort should be made to avoid infiltration at night. Ceilings should be provided to avoid the cold air entering the house. Windows should be provided in the north, east and south. The West should be avoided in order to control the hot discomfort. If and only if, one of the walls are gable walls of the house, providing windows to the west is allowed. Fins, umbrellas and all types of shading devices can be removed if and only if they are not used to divert the wind flowing in the house.
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