บัณฑิตวิทยาลัย มหาวิทยาลัยราชภัฏเชียงใหม่

Graduate School Chiang Mai Rajabhat University

Community Development Model with Biogas Grid Case Study: Mae Tha Community, Mae On District, Chiang Mai


ผู้วิจัย : Phoosita Chaisombat
หลักสูตร : DEGREE OF DOCTOR OF PHILOSOPHY สาขา : Community Energy and Environment
อาจารย์ที่ปรึกษา : Dr. Hathaithip Sintuya
อาจารย์ที่ปรึกษาร่วม : Dr. Worajit Setthapun

บทคัดย่อ


The objective of this research was to investigate the community development model with biogas grid in Mae Tha community. This research was conducted in both quantitative and qualitative aspects by dividing into 3 parts. The first part was the evaluation of biogas potential in the community. The second part was the feasibility analysis of biogas grid by analyzing the appropriateness in technique, economics, and operation.The third part was the construction of a community development model with biogas grid.

              The results of biogas potential evaluation in the community  revealed  that there were 1,500 households in the community with a total of 128 livestock farms including dairy farms, beef cattle farms, and pig farms. There was a total of 5,152 animals which could produce 2,100 cubic meters of biogas per day, equivalent to 996 kg of liquefied petroleum gas per day.Thus, the renewable efficiency in the community was capable of producing biogas.

               The results of a possibility analysis of biogas grid by analyzing the appropriate technique revealed that the community had the potential for producing biogas from 3,000 cubic meters of dairy cow dung. According to the possibility analysis, the Geographical Information System (GIS) was used to analyze the biogas grid of the community for 1,500 households within the radius of less than 5 km and the nearby livestock farms so that it is proper to conduct in the part of techniques. The results of the possibility analysis of biogas grid by analyzing the appropriate economics reveal that the government section should support at least 15% of the investment budget in order for the biogas to be sold at 28 baht/ kg, which was equal to  the LPG price rate in the market. This would make the biogas cost-effective in economic term. The results of possibility analysis of bio gas network by analyzing the appropriate operation in the community reveal that Mae Tha community was a strong community feasible to conduct the biogas grid project.

               The analysis and construction of the biogas model in the community were conducted through using the pattern and protocol of a cooperative to reduce expenses and to increase income as well as to create the economy cycle in the community. Moreover, it also reduces the pollution problems and accidents from delivering the LPG. It reinforces the energy security at the community level.

 

Keywords:  Biogas, Biogas Grid, Community Energy, Economics


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