Greenhouse Gas Reduction Effect of Solar Energy Systems Applicable to High-rise Apartment Housing Structures in South Korea

Abstract

In South Korea, we are aiming for net zero energy use apartment home structures. Since the apartment structure in South Korea is generally a high-rise of 10 or more floors, the types of renewable energy applicable are limited to photovoltaic (PV) panels, solar collectors installed on the wall, or a photovoltaic thermal (PVT) hybrid panel combining both. In this study, the effect of PV, ST (Solar Thermal), and PVT systems on greenhouse gas reduction was analyzed using TRNSYS18. All three systems showed maximum CO2 reductions at 35° facing south. PV, ST, and PVT showed CO2 reductions of 67.4, 114.6, and 144.7 kg_CO2/m2·year, respectively. Compared to those values, when installed on a wall (slope of 90°), CO2 reduction is about 35–40% less and about 20% less at a slope of 75°. ST and PVT installed on the vertical wall have a greater greenhouse gas reduction effect than the PV installed at the optimal slope of 35°. Since the CO2 reduction difference among SW, SE, and azimuthal S is within 10%, ST and PVT are recommended for installation on high-rise apartment structure walls or balconies with the azimuthal angle of ± 45° with respect to south.

MOOC education for sustainable development. The Erasmus+ project experience

“…Renewable energy sources are widely recognized nowadays as an effective response to the global issue of climate change (Ocetkiewicz et al 2017;Holfelder 2019;Park et al 2020). Therefore, the project included two MOOCs courses related to sources of clean energy and the potential of their use: geothermal energy and solar energy.…”

Investigation on Architecture and Energy End-Use Characteristics of Korean Apartments for Whole-Building Energy Simulation Modeling

“…한국은 2025년부터 30세대 이상의 신축 공동주택의 경우 ZEB 인증 의무화 대상으 로 포함된다 3) . 기축의 경우 노후 아파트를 대상으로 외피 성능향상, 고효율 냉난방 장치 교체 등 에너지 성능 개 선을 위한 그린 리모델링 정책이 활발히 추진중이다 4) . 에너지…”

Environmental assessment of central solar heating plants with seasonal storage located in Spain

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