International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 04 | Apr-2016 www.irjet.net p-ISSN: 2395-0072 © 2016, IRJET ISO 9001:2008 Certified Journal Page 992 Study of Solar Passive Techniques suitable for Building in Mumbai Region Mr. Bhavesh Pugaonkar 1 , Mr. Dnyaneshwar Pawaskar 2 , Mr. Mukul Phatak 3 , Mr. Pratik Pawar 4 Prof. Abhishek Deshmukh 5 1,2,3,4 U.G. Students, Dept. of Civil Engineering, G. V. Acharya Institute of Engg. & Technology, Maharashtra, India 5 Former Asst. Professor, Dept. of Civil Engineering, G. V. Acharya Institute of Engg. & Technology, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract – Increase in indoor temperature and air humidity of a building, leads to discomfort and cause health problems. Nowadays, air conditioning systems are widely used to control the temperature and moisture content of the indoor air, which increases the energy consumption. Passive techniques are key remedies to improve comfort hours without any usage of mechanical methods. Passive cooling techniques can reduce the heat load over the building envelope reduce the size of air conditioning system and the period for which it is generally required. Climate of Mumbai is warm and humid the temperature ranges between 30ᵒ to 35ᵒ and 25ᵒ to 30ᵒ in summer and winter respectively and humidity is about 60%. This paper studies the passive techniques that can be adopted for the warm and humid climate of Mumbai. Key Words: Passive techniques, Warm and Humid, Climate, Comfort, Building envelope. 1. INTRODUCTION The passive technique for different region is differs from climatic zones and their characteristics. There are six climatic zones in India. They are as follows; 1. Hot and dry 2. Warm and Humid 3. Moderate 4. Cold and Cloudy 5. Cold and Sunny 6. Composite Among these, Warm and Humid climate covers the coastal part of country. Mumbai region is fall under this climatic condition. Comfort is define as Ǯǯthat condition of mind which expresses satisfaction with thermal environment. ǯǯ The characteristics of each climate differ and accordingly the comfort requirements vary from one climatic zone to another. 1.1 Passive Techniques Adopting energy efficient practices in architectural design can appreciably reduce annual loads of building. The importance of evaluating the thermal performance of the building being design using the solar passive techniques, to understand the effectiveness of the design in achieving energy efficiency. There are different types of solar passive techniques and they are as follows; 1. Direct gain 2. Trombe wall 3. Water wall 4. Solar chimney 5. Trans wall 6. Roof pond 7. Roof radiation trap 8. Solarium 9. Evaporative cooling 10. Noctumal radiation And much more techniques are there. 1.2 Passive Techniques for Mumbai region There are various types of solar passive techniques, but the selection of those are depends upon the climatic condition in that region. For Mumbai region, 3 techniques are advisable i.e., 1. Induced ventilation 2. Desiccant cooling 3. Day lighting 2. Analysis of Passive Design A passive solar design involves use of natural processes for heating and cooling to achieve balance interior condition. To prevent heat from entering in to building; this depends upon two conditions; one is availability of heat sink which is at lower temperature than indoor air, and second is promotion of heat transfer towards sink (heat sinks are outdoor air, water, ground, etc.).