Recent Advancements in Electrically-Driven High-Temperature Heat Pumping Technologies

Abstract

The importance of industrial heat pumps for decarbonization has gained widespread recognition. In particular, research, development and demonstration of high-temperature heat pumps with supply of 100°C or higher are being accelerated especially in Europe. This paper reviews these technological trends and identifies issues for future research and development in Japan. Specifically, the report extracts the following future activities: the development of lubricant oil suitable for high temperature conditions, research on the construction of a compact and inexpensive steam supply system with high efficiency and controllability, and the development of technologies and standards to expand the application of natural refrigerants, including those with strong combustion properties.