Abstract
Purpose: The purpose of this study was to present an optimized green remodeling retrofit plan through energy performance and economic analysis of the public daycare center for which green remodeling has been completed. Method: By collecting data on public building green remodeling project management in 2020 from the Korea Authority of Land & Infrastructure Safety, target daycare centers that are single-use and can collect monthly building energy consumption data through a public data open system were extracted. The building outline and operating conditions were investigated, and energy performance was analyzed using Design Builder, a dynamic building energy analysis program. After calibration, an alternative model analysis for each technical element was performed, including the basic base model. Then, economic analysis was performed using the net present value method. Result: The results of this study were as follows. After comprehensively analyzing energy performance and economic feasibility, ALT-4(heat recovery ventilation system), ALT-9 (heat recovery ventilation system+high-efficiency air conditioning+LED lighting replacement), ALT-6(LED lighting replacement) models were determined by the final priority. ALT-4(heat recovery ventilation system) as a single element model and ALT-9(heat recovery ventilation system+high-efficiency air conditioner+LED lighting replacement) as a combined element model were the best alternative when comprehensively considering energy performance and economic feasibility in green remodeling.
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