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Carbon Payback Period and Energy Payback Period for Solar Water Heater

Author Affiliations

  • 1Department of Chemical Engineering, Adhiparasakthi Engineering College, Melmaruvathur – 603 319, Tamilnadu, INDIA
  • 2 Rural Energy Center, The Gandhigram Rural Institute – Deemed University, Gandhigram – 624 302, Tamilnadu, INDIA

Int. Res. J. Environment Sci., Volume 3, Issue (2), Pages 93-98, February,22 (2014)


The solar water heater system is compared with electric water to quantify the environmental and energy benefit of the system using life cycle assessment. In this paper consider the 100 lpd solar water heater available at Chennai, Tamilnadu. LCA has done as a three life cycle stages like manufacturing stage, operation and maintenance stages and product disposal stage. Based on the available data and calculated data life cycle inventory has been made for the solar water heater system. Material inventory, energy inventory and carbon inventory has done for the system to predict the environmental impact. Based on the life cycle inventory data Energy and Carbon intensity has been estimated for the solar flat plate collector. Then compared with electric water heater Energy and Carbon Payback Period has been estimated.


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