| Abstract | As AIT generated a lot of food waste and these waste lead to GHG emission in the campus, there do not use benefit from food waste which can produce the biogas. The biogas is the gaseous product of anaerobic digestion which occurs from the organic waste such as water waste, food waste, paper waste, human waste, manure, sewage, slaughterhouse waste etc. Nowadays, Biogas is used in many applications such as hot water, electricity generation, cooking, and cooling. Because of these, this study analyzed possibility to use biogas for supplying requirement in one academic building (Energy Building) and AIT cafeteria.
In Energy Building, there are three options which are suitable for this building. The first option is satisfying the total energy demand of Energy building, this option has payback period 3.4 years, net present value 20,535,543Baht and annual GHG emission 81.7 TonCo2e. The second and third option are satisfying the electricity requirement only and satisfying the cooling requirement only by using absorption chiller respectively. Both options have 14.2 and 24.9 years respectively. Net present value is 25,841 and 686,076 Baht respectively. And annul GHG emission reduction is 45.6 and 95.2 TonCo2e respectively. For AIT cafeteria, the option that satisfying cooking requirement only is very attractive, this option has 7.3 years, net present value 1,426,892 Baht and annual GHG emission reduction 59.1 TonCo2e.
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