Background

(1) Refrigerant Properties and Global Environmental Problems
As part of the efforts to reduce the use of ozone depleting substance, including specified CFCs and HCFCs, CFC alternatives, such as HFC refrigerant, have been produced. However, CFC alternatives have high global warming potential (GWP), which has led to concerns about their potential impact upon climate change. Some next-generation refrigerant mixtures, which are suitable for small scale air-conditioning equipment, have been suggested, but a decisive next-generation refrigerant has not been identified. In the future, identification of an optimized refrigerant will be essential not only for the development of refrigeration and air-conditioning industries, but also for the resolution of global environmental problems.
(2) Scope and Objectives
The Recerch Center for Next Generation Refrigerant Properties (NEXT-RP) was established withi I2CNER on April 1, 2016. The objectives of this center is:
  • Accurate evaluation of themophysical properties and fundamental performance of the heat exchange and air conditioning and refrigeration (ACR) cycle for zero-ozone depletion potential (ODP) and low-global warming potential (GWP) refrigerants
  • Organization of an R&D national research group led by Khushu Univeristy
  • Development of base knowledge and technology for thermophysical properties, performance of heat exchange, and the fundamentals of the ACR cycle
  • Technology transfer and assistance to ACR industrial sectors
  • Contributions to Japanese ACR industries to make them more competitive in the global market

 

Three Research Divisions

(1)Division for Thermophysical Properties and Transfer Processes of Next Generation Refrigerants
Thermophysical properties (thermodynamic properties and transport properties) of next generation refrigerants are measured, and then based on these data, correlations and equations are formulated for use in the analysis of the transfer process.
  • Prof. Yukihiro Higashi (Kyushu Univ.)
  • Prof. Naoya Sakoda (Kyushu Univ.)
  • Prof. Akio Miyara (Saga Univ.)
  • Prof. Ryo Akasaka (Kyushu Sangyo Univ.)
  • Prof. Chieko Kondou (Nagasaki Univ.)
(2)Division for Heat Pump and Refrigeration Cycles
In order to adapt next generation refrigerants to heat pumps and refrigeration instruments, the analysis of cycle performance is carried out, not only on pure refrigerants, but also on mixtures.
  • Prof. Shigeru Koyama (Kyushu Univ.)
  • Prof. Bidyut Baran Saha (Kyushu Univ.)
  • Prof. Takahiko Miyazaki (Kyushu Univ.)
  • Prof. Akio Miyara (Saga Univ.)
  • Prof. Chieko Kondou (Nagasaki Univ.)
(3)Division for Refrigerant Property Information and Academia-Industry Collaboration
Information obtained from divisions 1 and 2 are compiled into a database, and the data are transferred using user-friendly software. The international collaboration is established amongst Japanese researchers and their collaborators at international universities and institutes.
  • Prof. Yasuyuki Takata (Kyushu Univ.)
  • Prof. Shigeru Koyama (Kyushu Univ.)
  • Prof. Bidyut Baran Saha (Kyushu Univ.)
  • Prof. Yukihiro Higashi (Kyushu Univ.)
  • Prof. Ryo Akasaka (Kyushu Sangyo Univ.)

 

Network of Collaborations and Organizational Structure (as of May 2017)