Analysis of Building Energy Reduction by Building Energy Package Regarding Vietnam Environmental Condition and Economic

Abstract

Due to the construction industry, the increase in energy demands from the population, and economic growth in Vietnam, the need for energy efficient buildings has increased. An analysis of Vietnam’s regulations and standards related to building energy shows that Vietnam’s current technology level is similar to Korea in the 1980s, so it needs to upgrade its technology. Using Korea’s advanced energy efficient building technology, it will be possible to satisfy Vietnam’s need for energy efficient buildings. In a prior study, the baseline data were calculated using a building energy simulation program with Vietnam’s weather data and input values provided by the most recent Vietnam building energy standards (QCVN 09:2017:BXD). Then, the optimized input combination of building energy packages was derived to achieve energy savings of 60% by integrating the building energy simulation program (Energyplus) with a programming language (Python). Vietnam’s climate characteristics vary by region, so simulations were run with three sets of weather data (Northern: Hanoi, Central: Da Nang, Southern: Ho Chi Minh). As a result, the optimized input combination could reduce building energy usage by about 55% compared to the baseline model. In this study, building energy savings were analyzed using simulated data by modeling a real example building in Vietnam before the building energy package was installed.