US 12,460,829 B2
Building system for reducing energy consumption
Sarng Woo Karng, Seoul (KR); You Hwan Shin, Seoul (KR); Myeong Seon Chae, Seoul (KR); and Hyun Ji Kim, Seoul (KR)
Assigned to Korea Institute of Science and Technology, Seoul (KR)
Filed by KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul (KR)
Filed on Sep. 27, 2021, as Appl. No. 17/486,620.
Claims priority of application No. 10-2021-0053144 (KR), filed on Apr. 23, 2021.
Prior Publication US 2022/0341605 A1, Oct. 27, 2022
Int. Cl. F24S 20/66 (2018.01); F24D 11/00 (2022.01); F24D 11/02 (2006.01); F24D 19/10 (2006.01); F24F 5/00 (2006.01)
CPC F24F 5/0021 (2013.01) [F24F 5/0046 (2013.01); F24F 2005/0064 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A building system for reducing energy consumption, the building system comprising:
a building wall in which an exterior wall layer, a concrete layer, an insulator, and a heat radiation layer are sequentially arranged inward from an outer side of a building, wherein the exterior wall layer accommodates a phase change material (PCM), the PCM absorbs heat in a latent heat section while maintaining a state without a temperature change, and when the PCM absorbs heat, there is no change in temperature within the latent heat section, thereby performing an insulation function that blocks solar radiant heat from passing through the building wall into the building interior;
a circulation pipe penetrating an interior of the exterior wall and through which a heating medium flows, wherein the heating medium circulates in the circulation pipe and exchanges heat with the PCM in the exterior wall layer, and the PCM provides the heat to the heating medium while maintaining the state without a temperature change due to heat being absorbed in the PCM using the heating medium that flows through the circulation pipe;
a thermal energy storage, the thermal energy storage being a seasonal thermal energy storage connected to the circulation pipe and configured to store heat transmitted by the heating medium in a summer season, wherein the thermal energy storage stores solar heat absorbed during the summer season, and the stored heat is utilized by the energy demand unit during the winter season for heating purposes;
a hot water pipe, one side of which is connected to the thermal energy storage and penetrates an interior of the heat radiation layer;
an energy demand unit connected to the thermal energy storage through the hot water pipe and receiving thermal energy stored in the thermal energy storage during the summer season as a heated heating medium, and during the winter season, utilizing the heating medium for hot water and a heat source;
a control valve configured to control a flow direction of the heating medium, wherein during the summer season, the control valve directs the heating medium to circulate through the circulation pipe to store solar heat absorbed by the exterior wall layer in the thermal energy storage while transferring heat from the PCM to the thermal energy storage, thereby maintaining the PCM in the state without a temperature change, and during the winter season, the control valve redirects the heating medium to circulate through the hot water pipe, thereby supplying the stored thermal energy to the energy demand unit and the heat radiation layer for heating purposes while preventing the heating medium from circulating though the circulation pipe, thereby preventing heat exchange with the PCM in the exterior wall; and
a circulation pump connected to the thermal energy storage and forcing the heating medium to circulate.