A Preliminary Proposal for Replacing Black Roofs at IIM Calcutta with White Roofs Ramaswamy Sankar MBA Student, Indian Institute of Management, Calcutta Ph.D., Chemical Engg, University of Massachusetts, Amherst BTech, Chemical Engg, Indian Institute of Technology, Madras
Cost/benefit analysis for cool roof at Satyam Learning Center has been carried out which suggests that the cool or white roof coatings have a 2.37 year financial payback period in the composite climatic conditions of India.
Determination of energy saving with cool roof concept using calibrated simulation: Case of a learning centre in composite Indian climate Aviruch Bhatia*, Vishal Garg**, Jyotirmay Mathur* *Mechanical Engineering Department, Malaviya National Institute of Technology, Jaipur (India), **Centre for IT in Building Science, International Institute of Information Technology, Hyderabad (India) White Roof Reduces Energy Consumption Lower AC Costs with Cool Roof
2006: Experiment at IIIT, Hyderabad http://www.iiit.net/research/cbs/Projects/cool%20roof.html
The average daily maximum roof-surface temperature of the initial concrete roof was about 52�C, for the black roof was 60�C, and for the white roof was 32�C.
The average daily a/c savings (applying cool coatings on concrete roof) were 30 kilowatt-hours (5% of total a/c use, annual saving of 9000 kWh ). At Rs 5 per kWh, the total discounted savings over the expected life of the roof are estimated to be Rs. 430,000 .
Is there a subsidy from Govt of India through the National Mission on Energy Efficiency?