The Potential to Reduce Hotels Carbon Footprint by Using Solar Energy: A Case Study of Small Hotels in Nan Province
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Abstract
Nowadays, global warming is a major problem caused by inefficient use of resources. One of the reasons is from tourism, especially from the energy consumption of the hotel which operates 24 hours a day. While solar energy systems are installed to reduce the carbon footprint of hotels, research on carbon offset hotel buildings is still very limited. Especially in small hotels which are the main choice of hotels for Thai tourists. This study is a simulation research, which aims to study the installation patterns of solar power systems for small hotels. A hotel in Nan province was used as a case study. In this study the building roof area, the building roof shape, the roof and solar panel tilt angle and building shape and solar panel orientation were altered to estimate electricity used through the Design builder simulation program Design Builder v7.0.1.006 and the economics analysis were performed to find a suitable installation solution.
The results show that the optimal form of installation per roof area is the installation form that covers the building's 1 year electricity consumption and the main factors that affect the potential to reduce carbon footprints is orientation of the building and facing the solar panel to the south and the southwest is the best direction. determine the solar panel tilt angle at 18 degrees. By the most attractive form for investment is an Internal Rate of Return at 11.00 % with a net present value of 554,326 baht and a payback period of 8.60 years, which can reduce the carbon footprint of 27,500.81 kg.CO2eq in 1 year.
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