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The Japan Association for the Properties of Water and Steam


The Japan Association for the Properties of Water and Steam (JPAPWS) is made up of members of industry and academia specializing in science and technology related to the properties of water and steam. The purpose is to promote research presentations and exchange of opinions by researchers and engineers in related fields. The Society also serves as the Japanese national committee of The International Association for the Properties of Water and Steam (IAPWS).

ホーム: 概要



4-1-1 Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa 223-8521 Japan

Yasuoka Laboratory, Department of Mechanical Engineering, Keio University


Tokushima Office

2-1 Minamijyousanjima-cho, Tokushima 770-8506 Japan 

Department of Applied Chemistry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University


(Please replace (at) in the email address with @)

Tel: +81-88-656-7669

ホーム: お問い合わせ

What's New

Click here for past news

ホーム: 新着情報

June 5, 2023

Our first symposium will be held on Wednesday, November 29, 2023.

May 30, 2023

FY2023 1st General Meeting Held

The first general meeting of this fiscal year was held.

March 20, 2023

The fourth general meeting of this fiscal year was held.

January 27, 2023

The third general meeting of this fiscal year was held.

December 2, 2022

IAPWS annual meetings 2022 held in Rotorua, New Zealand

The 2022 IAPWS annual meeting was held in Rotorua, New Zealand, in an in-person format for the first time in three years. For more information on the meeting, please visit the IAPWS website.

October 21, 2022

The second general meeting of this fiscal year was held online.

September 27, 2022

Mr. Shin-ichi Terada (Toshiba Energy & Systems Solutions Corporation) made a presentation at a technical discussion meeting held by Thermal and Nuclear Power Engineering Society.

At the 2nd Water Quality Management Technical Review Subcommittee Meeting (6th Technical Discussion Meeting) held by Thermal Power and Nuclear Power Engineering Society, Mr. Terada gave a presentation introducing activities to develop criteria steam at geothermal power plants through joint implementation by IAPWS and JPAPWS.

September 14, 2021

Dr. Tatsuya Ishiyama (Univ. of Toyama) received the IAPWS Helmholtz Award

Dr. Tatsuya Ishiyama (Associate Professor, University of Toyama) has received the IAPWS Helmholtz Award 2020. The award lecture, which was postponed for a year due to the COVID-19 pandemic, was held on September 14, 2021, the first day of this year's IAPWS Symposium, under the title "Molecular Dynamics Study of Transport, Structure and Spectroscopy at Liquid Interfaces.

August 4, 2021

2021 IAPWS PCAS Symposium will be held online

The "2021 IAPWS PCAS Symposium (2021 PCAS)" will be held on August 26, 2021, as a web conference organized by Working Group on Physical Chemistry of Aqueous Systems (PCAS) of IAPWS (Chair of PCAS WG: Dr. Yoshida, JPAPWS). There is no fee to attend, and registration closes on August 20. For more details, please visit the symposium website.

April 1, 2021

Prof. Yasuoka appointed as Chair of JPAPWS

Former Vice Chair Prof. Kenji Yasuoka (Keio University) has been appointed as the Chair of JPAPWS.

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