Effect of Overhangs on Heat Control
Effectof Overhangs on Heat Control
Overhangsare constructed in buildings to shade them from undesirable sun’sradiation. The thermal mass of a building is kept in the shade whenoverhangs are constructed. The sun travels across the sky indifferent paths based on various season. Heat energy can be used ormanipulated from the sun using the overhangs (Ebrahimpour &Maerefat, 2012). Buildings are likely to gain heat when solarradiation enters through roofs, walls, and other openings. The paperdiscusses how overhangs influences heat control.
Overhangscontrol the amount of solar radiation that penetrates into a buildingor house. Shades are created when overhangs are developed limitingthe number of solar rays reaching the surface. A building that hasoverhangs is likely to remain cooler during the summer and hot in thewinter. Materials with thermal mass remain cold if a shade is used toshield them from any external heat such as the sun’s radiation.Some objects have a high density and can resist fluctuations of rapidtemperatures. Overhangs are used to shade buildings enabling them tomaintain their heat. Different designs can be used to constructoverhangs to ensure that they allow in sun’s radiation duringwinter and prevent them in the summer. Heat control is attained whenoverhangs are used because the constructed shades enable buildings tomaintain the desired temperature at all seasons (Ebrahimpour &Maerefat, 2012). Heat gain is controlled using the shading strategy,which promote comfort in buildings and houses. Spaces are createdoutside buildings that have a favorable temperature for relaxing inthe afternoons using overhangs. The quantity of direct solarradiation that strikes the surface is reduced when shades aredeveloped. Overhangs, therefore, help to manipulate and regulate heatin various areas.
Thearea of a building that may be exposed to solar radiation isminimized or increased using overhangs. Windows, doors and otherventilation ways can be protected from being stricken by the sun’srays. Overhangs control heat transfer through various surfaces.Transparent parts of a building are likely to promote circulation ofheat than opaque material. Heat control is enhanced if overhangs areproperly designed and developed in buildings because they make itpossible to block or allow solar radiation. Reflected and diffuseradiations from the sun are not prevented from reaching the surfaceusing shading (Ebrahimpour & Maerefat, 2012). The position of theoverhangs is considered based on how solar radiation should beblocked or manipulated. The surface of a building can be completelyshaded and unshaded from the sun during various seasons with the helpof adjustable overhangs. Although shading may reduce direct solarradiation, unexpected heat can be experienced when the reflected anddiffuse rays strike the buildings’ windows and doors.
Overhangsmay fail to control heat if ground radiation is not minimized andprotected from reaching buildings. The number of overhangs created ina building influences the transfer rate of heat. Ventilation isincreased if a building is shaded using few overhangs. Heat loss andgain depend on the ventilation method used in a structure. Highlyventilated buildings are likely to get cold and hot quickly thanthose shielded using overhangs (Ebrahimpour & Maerefat, 2012).Air circulates freely in a ventilated house resulting in maintenanceor change of room temperature. A desirable or unexpected heat may beexperienced when overhangs are utilized to protect or expose buildingto solar radiations.
Heatcontrol is attain using overhangs because solar radiation isattracted and stored for warming buildings during the winter. Adesign of shading can be implemented that ensures that the windows,doors and other surfaces of buildings are exposed to direct solarradiation. Since the material making the walls, and other surfaceshave high density, much heat is likely to be absorbed, stored, andreleased when needed (Ebrahimpour & Maerefat, 2012). Energyoptimization is the idea behind the use of overhangs and appliesduring winter because the exposure of sun is limited in most days.Proper orientation of shading is an aspect that is considered toensure that the required heat is allowed into houses.
Theamount of moisture contained in a particular place can be maintainedby implementing a heat control strategy. Overhangs are used toaddress moisture problems that are witnessed in residential andworking areas. Energy efficient buildings have been comfortablydeveloped and occupied through the help of heat control mechanisms.Overhangs ensure that moisture is kept away from the surface ofhouses (Ebrahimpour & Maerefat, 2012). The shading strategyprotects parts such as doors, walls, and windows of a building fromrainwater. As a result, an environment that is favorable for humansto reside is created. The overhangs facilitate the efforts ofcontrolling heat.
Inconclusion, overhangs influence heat control in buildings.Temperatures can be reduced during summer seasons and a coolenvironment achieved if proper shading is created in houses. Besides,the required heat can be directed into buildings from the sunradiation with the help of overhangs during the winter. Unexpectedheat is sometimes experienced when overhangs are used to manipulateor control heat from the sun. Diffusion and reflected radiations fromthe sun may not be protected, which result in an unnecessary increasein temperature.
Ebrahimpour, A., & Maerefat, M. (2012). Application of advancedglazing and overhangs in residential buildings. Energy Conversionand Management, 52(1), 212-219.
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