The Evaluation of Energy Efficiency of Base Case Residential Building

Abstract

The global warming crisis is a major problem facing the global society at present time. According to a survey by the Ministry of Energy, households or residences account for 23% of electricity demand, which is the second number of total electricity demand in Thailand. This research focuses on the architectural elements of residential buildings, which are the factors affecting the use of electrical energy in residential buildings. To analyze and find ways to conserve energy efficiently. This research takes the base case residential building which is the most common type of residential buildings in Thailand from the research project to study the criteria of energy consumption in residential building and create energy-saving home prototypes by the Department of Alternative Energy and Energy Efficiency (DEDE), Ministry of Energy, Which has been surveyed and collected data on the characteristics and shape of most basic houses in Thailand. It also can be used as a model representative to assess the efficiency of energy conservation of residential buildings in Thailand.

            Methods for Studying The Evaluation of Energy Efficiency of Base Case Residential Building in Thailand have suggested 2 basic guidelines for the improvement of residential building, which are Guideline 1 modification of building materials and Guideline 2 design modification focusing on shading of the eaves and roof. This research relies on modeling and analyzing results through the program DOE2.1E ver.121.

            The results of the study showed that the building improvements according to the Guideline 1 modification of building materials can save more electricity. The electricity consumption is 4,240 kWh / yr and the cost of renovation is 59,812 baht, while renovating the building, according to the Guideline 2 design modification, can save less energy than the Guideline 1. The electricity consumption is 4,873 kWh / yr and the cost of renovation is 28,342 baht. According to analyzing the cost of investment, it was found that the Guideline 2 design modification is more suitable for economics. Since it has a faster payback period which is 8 years and 9 months. However, the improvement of the building, according to the two recommendations , still shows significant efficiency in energy conservation. If the pattern and the appearance of the building is appropriate, there will be no need for renovations later. It can be concluded that architectural design is the first important factor that must be taken into consideration before selecting materials.