A calculation method on primary energy consumption for various heat source of service water heating

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K04817
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: Kanagawa University
• Principal Investigator: Iwamoto Shizuo 神奈川大学, 建築学部, 教授 (20213316)
• Co-Investigator(Kenkyū-buntansha): 藤本 遼 神奈川大学, 建築学部, 助手 (30986097) ; 傳法谷 郁乃 神奈川大学, 付置研究所, 研究員 (00782301)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 給湯設備 / 給水温 / 熱源 / 一次エネルギー消費量 / 省エネルギー

Outline of Final Research Achievements

This study proposes a formula for calculating the water temperature, checks its accuracy and sets it up for each city. It also adds a calculation that takes solar preheating into account. Furthermore, a method is proposed to calculate the efficiency of boilers and heat pumps, including their respective operating characteristics. Using these two calculation methods, the aim is to establish a general-purpose calculation method that includes hybrid heat sources, and the outcome is to provide it in a form that can be easily used by designers.

Free Research Field

建築環境工学

Academic Significance and Societal Importance of the Research Achievements

これまで十分な知見のなかった浄水温について、調査する方法、簡易に予測する方法を示し、都市別に設定できることを示した。また、給湯設備による一次エネルギー消費量を手軽に計算でき、多様な熱源による計算結果が得られることから、給湯設備の省エネルギー設計に寄与できると思われる。