International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 08 | August 2022
p-ISSN: 2395-0072
www.irjet.net
Comparative Analysis of Conventional and Energy Efficient Materials for Residential Bungalow with respect to the Hot and Dry Climate. Ar. Nikita Gudur1, Prof. Sandeep Dige2, Prof. Anjali Jadhav3 , Prof. Rakhi Begumpure4 1Post
Graduate Student, S.P.S.M.B.H S College of Architecture, Kolhapur, Maharashtra 2Principal, S.P.S.M.B.H S College of Architecture, Kolhapur, Maharashtra 3 Professor, Dept. of Architecture and Construction Project Management, S.P.S.M.B.H S College of Architecture, Kolhapur, Maharashtra, INDIA. ---------------------------------------------------------------------***--------------------------------------------------------------------building out of which 20% by residents and 9% by Abstract - Energy-efficient buildings have expanded more commercial. (3)
popularity in the last few years, due to the increased emphasis on energy conservation. The main aim of energy-efficient buildings is to minimize environmental impacts such as greenhouse gases due to the use of conventional materials in construction. It results in achieving thermal comfort and minimizing artificial cooling loads indoors. This initiative takes one step forward saving the globe from an energy crisis. Comparative analysis is done based on case studies performed between conventional and energy-efficient bungalows.
2. METHODOLOGY The method adopted for the study is exploratory, where 3 live case studies of residential units in Solapur have been considered for a quantitative field survey of temperature and relative humidity in May-June 2022. Based on this case study a comparative analysis of conventional and energy-efficient building materials can be done. And then selecting material that has a low heat transfer coefficient (U) value and (R) value.
Key Words:
Conventional materials, energy efficient materials, hot and dry regions, residential bungalows, thermal comfort, and passive cooling strategies.
3. ANALYSIS
1. INTRODUCTION
Out of 3 live case studies, one is the conventional residential unit to have a better comparison with the other two passive design residential units. Indoor and outdoor temperature and indoor and relative humidity have been recorded during the field survey. A survey has been performedin the month of May-June, 2022 at three intervals of time in the day i.e. morning, afternoon, and evening (9 am, 12 pm, and 4 pm). The temperature has been measured with the help of calibrated thermometer i.e. psychrometer instrument of both Dry bulb and Wet bulb temperature has been recorded and then with help of psychrometric chart relative humidity hasbeen calculated.
A study of residential buildings in Solapur city shows that most occupants of the buildings have persistent and growing problems with the indoor environment due to high indoor temperature. Most buildings are characterized by poor design in relation to the climate, which requires a great deal of energy for cooling during climatic extremes. It also helps to reduce the usage of air conditioners and the period for which it is highly required. The ideal method is to work in harmony with the local climate. (1) In terms of thermal comfort, traditional and contemporary buildings have different demands. Traditional buildings accomplish most of their comfort by passive methods, without the use of HVAC, but old levels of thermal comfort do not reach today's standards, despite the fact that their passive thermal performances are exceptional for modern building designs. In this regard, the current study attempts to evaluate the feasibility of comparing the construction approaches of traditional and contemporary buildings in order to attain comfortable conditions from an architectural perspective. (2)
3.1. INDOOR AND OUTDOOR TEMPERATURE Both indoor and outdoor temperatures of all 3 case studies have been recorded. In case 1 during morning time, both indoor and outdoor temperatures are the same; in the afternoon and evening, the outdoor temperature is higher by 1-2°C than the indoor temperature. In this case, passive cooling strategies have been applied such as inverted earthen pots used for coba on terrace and whitewash which has eventually reflected in reducing indoor temperature and achieving thermal comfort. The second case is of the conventional building (R.C.C.) in which any of the passive strategies hasn’t been implemented that’s why the indoor temperature is higher than the outdoor by 3-4°C. Case 3 also has the same readings as case 1 with outdoor temperatures higher than the indoors. In this case, ground floor is
It is seen that one-third of the world's energy is consumed by the building out of which 60% is through air conditioning systems. The building sector consumes a large amount of energy to provide thermal comfort to its occupants in India. It can be seen that 29% of the overall energy is used by the
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