Integrated Heat Recovery System Design of Variable Refrigerant Flow (VRF) System with Domestic Hot Water (DHW) Loop

Dongsu Kim; Byeongho Yu; Heejin Cho; Jaeyoon Koh; Hyunjin Nam

추천

검색

질문

자료유형: 학술대회자료

저자정보: Dongsu Kim (Hanbat National University) Byeongho Yu (Mississippi State University) Heejin Cho (Mississippi State University) Jaeyoon Koh (LG Electronics USA) Hyunjin Nam (LG Electronics USA)

저널정보: 대한설비공학회 대한설비공학회 학술발표대회논문집 대한설비공학회 2021년도 동계학술발표대회 논문집

발행연도: 2021.11

수록면: 280 - 283 (4page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

Heat recovery technologies of variable refrigerant flow (VRF) systems provide the remarkable potential to achieve high-efficiency building performance while simultaneously meeting space cooling, heating, and water heating demands. This study presents the development of a variable refrigerant flow heat recovery (VRF-HR) system model integrated with a domestic hot water (DHW) system. A refrigerant circuit box is used to control refrigerant flows between indoor zones for simultaneous heating and cooling and recover the waste heat to generate hot water using a hydraulic heat exchange. A post-processing program is developed using mass and energy balances to estimate the power consumption and assess the energy savings potential of the proposed system. Whole building energy simulations in different climates are performed using the EnergyPlus prototype building model developed by the U.S. Department of Energy to obtain hourly building thermal demands and heat recovery potential hourly profiles. Those hourly profiles are applied to the post-processing calculation. A small-sized hotel building is selected in this study to demonstrate the feasibility of the proposed VRF-HR with the DHW loop model under TMY3 weather conditions in two U.S. climate locations, including 3A Atlanta, GA and 5A Chicago, IL. Results indicate that the developed VRF-HR system with the DHW loop can achieve more than 90% of DHW energy savings for the summer period compared to VRF systems without the DHW loop.

#multi-functional variable refrigerant flow system #heat recovery technology #domestic hot water system #building energy simulation #EnergyPlus prototype model

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!