Jayswal M.,CEPT University
Energy Procedia | Year: 2012
Energy consumption in the building sector is very high and it is expected to increase further due to increase in standards of living and change in typology of the building. Other major factor which has a significant effect on energy consumption is climate, especially in hot and dry climate. There is vast temperature fluctuation in such type of climate promoting greater use of air conditioning system, thus increasing energy consumption. The Study examines the energy conservation potential of the Passive Downdraft Evaporative Cooling (PDEC) technique for the commercial building sector in hot and dry region of Ahmedabad. The Study examines four different scenarios, 1) Conventional Case, 2) Envelope Design case 3) Energy Conservation Building Code (ECBC) Envelope Design case and 4) ECBC Envelope Design case with Evaporative Cooler (EC). Performance of all scenarios is measured through simulation software 'eQuest'. Simulation results are compared with actual building observations and comparative analysis is done in terms of Cooling load, Energy consumption, CO2 emissions and other co-benefits. The Research finding proves that Passive Downdraught Evaporative cooling technique offer real opportunity for improving indoor thermal comfort conditions in a building whilst reducing cooling load of air-conditioning systems, thereby reducing energy consumption and provides better indoor environment by providing 100% fresh, cool air into a space. The analysis confirms the advantage of such passive cooling strategy in hot dry climate of Ahmedabad. Further research also identifies the significance of the integrated architectural approach. Result of the each scenario with better envelope design and efficient cooling technique has shown significant energy conservation. The findings clearly suggest that while energy efficiency can be achieved through building regulations/codes and appropriate choice of materials/construction technology, but the potential for energy efficiency is much higher when such measures are integrated into the design philosophy and approach. The results can be used to estimate the energy conservation potential of such technique for wider application and also in developing recommendations to encourage the use of such passive cooling techniques. As commercial building floor area in Ahmadabad is projected to be double by 2035, there is a large potential to conserve the energy. Developing guidelines and action plan to promote such techniques will certainly help to reduce energy consumption, hence reducing GHG emissions. © 2012 The Authors.
Munshi T.,CEPT University
Transportation Research Part D: Transport and Environment | Year: 2016
Metropolitan areas around the world are looking for sustainable strategies to reduce use of private automobiles, energy consumption and emissions, often achieved by built environment interventions that encourage use of sustainable modes of transport. This study contributes by providing the empirical evidence on the relation between built environment and mode choice in context of Indian city of Rajkot. Using personal interview data and data available from Rajkot Municipal Corporation it is observed that there is a strong tendency among Rajkot residents to preselect their residential location to suit their modal preferences. This is especially true for non-motorized transport users. Among the built environment variables, access to destination and land use related indicators also have significant influence on mode choice. The study Infers that the land use policy should focus on accessibility and mixing of diverse uses, and transport supply will have to be location based to support non-motorized and public transport travel. © 2015 Elsevier Ltd.
McFarlane C.,Durham University |
Desai R.,CEPT University |
Graham S.,Newcastle University
Annals of the Association of American Geographers | Year: 2014
The global sanitation crisis is rapidly urbanizing, but how is sanitation produced and sustained in informal settlements? Although there are data available on aggregate statistics, relatively little is known about how sanitation is created, maintained, threatened, and contested within informal settlements. Drawing on an ethnography of two very different informal settlements in Mumbai, this study identifies key ways in which informal sanitation is produced, rendered vulnerable, and politicized. In particular, four informal urban sanitation processes are examined: patronage, self-managed processes, solidarity and exclusion, and open defecation. The article also considers the implications for a research agenda around informal urban sanitation, emphasizing in particular the potential of a comparative approach, and examines the possibilities for better sanitation conditions in Mumbai and beyond. © 2014 © 2014 by Association of American Geographers.
Jain S.K.,Indian Institute of Technology Gandhinagar |
Mitra K.,Bengal Engineering and Science University |
Kumar M.,Indian Institute of Technology Kanpur |
Shah M.,CEPT University
Earthquake Spectra | Year: 2010
Poor performance of reinforced concrete (RC) frame buildings in India during past earthquakes has been a matter of serious concern. Hence, it becomes important to identify and strengthen the deficient buildings. When dealing with a large building stock, one needs evaluation methods for quick assessment of the seismic safety of existing buildings so that corrective retrofitting measures may be undertaken on the deficient buildings. This paper presents a review of some of the available methods for rapid visual screening (RVS) of RC-frame buildings and proposes a RVS method for RC-frame buildings in India based on systematic studies on damage data of the 2001 Bhuj earthquake. © 2010, Earthquake Engineering Research Institute.
Pathak M.,CEPT University |
Shukla P.R.,Indian Institute of Management Ahmedabad
Transportation Research Part D: Transport and Environment | Year: 2015
Rising population, income and urbanization are increasing urban passenger transport demand in India. Energy and emissions intensities associated with conventional transport are no longer sustainable vis-a-vis energy security, air quality and climate change. Cities are seeking transport roadmaps that jointly mitigate these risks. Roadmaps vary across cities, but approach to delineate actions is common: (i) 'representative vision' that articulates long-term goals, (ii) methods for comparative scenarios assessment, and (iii) quantification of co-benefits to prioritize actions. This paper illustrates application of quantitative modeling to assess development and environmental co-benefits for Ahmedabad city. The paper constructs two transport scenarios spanning till 2035. The bifurcating themes are: (i) Business-as-Usual (BAU) and Low Carbon Scenario (LCS). The quantitative assessment using Extended Snapshot (ExSS) Model shows that transport activity shall result in four-fold increase in energy demand under BAU from 2010 to 2035. Three key contributors to CO2 mitigation under LCS in merit order are: (i) fuel switch, including decarbonized electricity, (ii) modal shift, and (iii) substitution of travel demand. Scenarios analysis shows that LCS improves energy security by reducing oil demand and also delivers air quality co-benefits - reducing 74% NOx and 83% PM2.5 from the passenger transport sector compared to BAU in 2035. Finally, the paper argues that cities in developing countries can leverage carbon finance to develop sustainable and low carbon mobility plans that prevent adverse infrastructure and behavioral lock-ins and prompt low carbon development. © 2015 Elsevier Ltd.