Abstract
Purpose: Old buildings over 30 years accounted for about 38% of buildings in Korea, and of 2019. and it is important to improve the performance of old small buildings for 2050 carbon neutrality in the future. However, there is a lack of remodeling guides based on energy performance of old buildings. This study aims to collect basic data on standard remodeling guides for energy reduction. Method: The problems of old buildings were identified for 12 non-residential buildings that are more than 30 years old located in the original downtown of Jeonju. Thermal imaging camera measurement, window performance measurement, airtightness test, and field investigation were conducted. Among them, two places that are widely distributed that were classified by structure were selected. Two remodeling design methods were proposed to reinforce vulnerable areas. The degree of improvement in energy efficiency compared to the present was analyzed by performing energy analysis accordingly. Result: The proposed remodeling design method was applied. In both buildings, the heating energy requirement has decreased by more than 80% compared to the present. This study will be basic information for preparing a standard remodeling guide for improving the energy efficiency of old buildings in the future.
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