Multi-criteria Evaluation of Water Heating Alternatives for Promoting Solar Water Heater in Solapur District
In Indian domestic and Industrial sector, SWH has high scope for developing energy production. The total installed collector area expected to increase from 3.24 million m2 in 2010 to 18.70 million m2 in 2020. The people are aware of the importance of solar energy utilization for environment, economy, and industry, but still, solar energy utilization in rural and urban areas of India is quite limited. For promotion, selection of renewable energy multi-criteria has been used by many researchers [3, 5, 7]. In literature, there is a scarcity of using Analytical Hierarchy Process (AHP), a multi-criteria decision-making method (MCDM) for various alternatives of water heating for promoting the application of solar water heater for domestic and industrial applications.
The paper presents the use of AHP, multi-criteria to evaluate four water heating alternatives, solar water heater, fuel or gas, coal or biomass, and electricity and rank the alternatives. The evaluation is based on identified ten criteria from literature and experts (academic, industry and users) opinion are cost, social impact (quality of life), environment (impact on ecosystem and pollution), technical (design, availability, safety, maintenance, and training requirement) and location plant size (size and flexibility). The methodology has been presented in the flowchart. A weight of each criterion has been determined and score for each alternative water heating preferences have been determined and it is followed by sensitivity analysis. Meaningful conclusions have been drawn such as safety (24.33%) is the highest important criteria, followed by maintenance (14.62%), pollution (14.20%) while selecting water heating. Further, it is helpful for improving the design of water heating.
KeywordsSolar water heater MCDM AHP
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