Department of Civil Engineering

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Author: search.filters.author.Gupta, RajivSubject: search.filters.subject.Static sunshade

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Now showing 1 - 6 of 6
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    Comparative thermal performance of static sunshade and brick cavity wall for energy efficient building envelope in composite climate
    (Doiserbia, 2014) Gupta, Rajiv; Charde, Meghana
    Energy efficient building technologies can reduce energy consumption in buildings. In present paper effect of designed static sunshade, brick cavity wall with brick projections and their combined effect on indoor air temperature has been analyzed by constructing three test rooms each of habitable dimensions (3.0 m × 4.0 m × 3.0 m) and studying hourly temperatures on typical days for one month in summer and winter each. The three rooms have also been simulated using a software and the results have been compared with the experimental results. Designed static sunshade increased indoor air temperature in winter while proposed brick cavity wall with brick projections lowered it in summer. Combined effect of building elements lowered indoor air temperature in summer and increased it in winter as compared to outdoor air temperature. It is thus useful for energy conservation in buildings in composite climate.
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    Effect of energy efficient building elements on summer cooling of buildings
    (Elsiever, 2013-12) Gupta, Rajiv
    Growing energy demands with an increasing population have reiterated the importance of energy conservation. Buildings share a large portion of energy use worldwide. Energy efficient building technologies help to maximize solar heat gain in winter, minimize it in summer and optimize energy requirements in buildings. In present paper, effect of ventilated brick cavity wall with brick projections (independently and combined with designed static sunshade and hollow roof) on indoor air temperature has been analyzed experimentally by constructing four rooms of habitable dimensions (3.0 m × 4.0 m × 3.0 m high) and studying average hourly temperatures in summer. The combined effect of ventilated brick cavity wall with brick projections, designed static sunshade and hollow roof helped to lower indoor air temperature for hotter part of the day in the study period. It also lowered maximum and minimum indoor air temperature and swing in indoor air temperature although there was a large variation in outdoor air temperature. Combined effect of the energy efficient building elements is thus useful for summer cooling and energy conservation in buildings.
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    Annual Thermal Performance of a Hollow Roof in Combination with a Cavity Wall and Static Sunshade: Experimental Study of Energy-Efficient Rooms
    (ASCE, 2013-12) Gupta, Rajiv
    Energy consumption by the building sector constitutes a large portion of global energy use. Energy-efficient building technologies help to reduce heat gain in hot summer months, heat loss in cold winter months, and modify energy requirements in buildings. In the writers’ paper, the effect of a proposed hollow roof (independent of and combined with a designed brick-cavity wall with brick projections and static sunshade) on indoor air temperature has been analyzed experimentally by constructing four rooms of habitable dimensions (3.0×4.0×3.0-m high) and studying average hourly temperatures for 1 year. Each room has a different combination of type of roof, wall, and static sunshade; hence, the difference in indoor air temperature of the rooms will primarily be attributable to differences in heat transferred through these building elements. The proposed hollow roof combined with the designed brick-cavity wall with brick projections and static sunshade lessened indoor air temperature in summer and increased indoor air temperature in winter mornings and nights. The writers’ structures are thus useful for energy conservation per seasonal needs
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    Design development and thermal performance evaluation of static sunshade and brick cavity wall: An experimental study
    (Elsiever, 2013-05) Gupta, Rajiv
    Energy efficient building technologies reduce energy requirements in buildings. It is possible to maximize solar heat gain in winter, avoid overheating in summer by proper design of building elements and bring indoor air temperature near comfort zone (18–27 °C) to optimize energy needs. In present paper effect of proposed static sunshade, brick cavity wall with brick projections and their combined effect on indoor air temperature has been analyzed by constructing three rooms each of habitable dimensions (3.0 m × 4.0 m × 3.0 m high) and studying average hourly temperatures for three months in summer and winter each. Performance of proposed static sunshade has been found to be better than horizontal static sunshade in winter while that of proposed brick cavity wall with brick projections is better than a solid brick wall in summer. Combined effect of proposed static sunshade and brick cavity wall with brick projections has been effective in keeping indoor air temperature less in summer mornings, more in winter nights and hence useful for energy conservation in buildings as per seasonal needs.
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    Evaluation of a New Static Sunshade for Composite Climate using Experimentation
    (IJERA, 2011) Gupta, Rajiv
    Windows, which play a vital role for direct solar entry inside the passive solar buildings, should be properly shaded for the comfort conditioning. The present paper aims at the new geometrical design of a static sunshade by calculating solar angles for the two specific dates of varying seasons over a place. Five small-scale experimental models of varying aspect ratios and sunshades have been analyzed over a complete year. Depending upon the solar intersection over south facade wall, sunlit area or shaded area has been correlated with temperature inside the models and made criteria to decide the effectiveness of the proposed sunshade.
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    Design development of a static sunshade using small scale modeling technique
    (Elsiever, 2005-05) Gupta, Rajiv
    The rising global demand for energy has triggered emphasis on conservation of energy. Buildings are one of the important energy consuming sectors. Passive solar architecture encompasses a wide range of strategies and options resulting in energy efficient building design and increased occupant's comfort. Passive solar design, aiming at increasing direct solar gains during winter period and to avoid overheating during summer period should make use of specific shading devices over energy efficient window. The static sunshades are most effective for solar control inside the buildings.