Hirokazu Hirai

Development of a 3 <inline-formula> <tex-math notation="TeX">$\phi$</tex-math></inline-formula>-66/6.9 kV-2 MVA REBCO Superconducting Transformer

M. Iwakuma, K. Sakaki, Akira Tomioka et al. · IEEE Transactions on Applied Superconductivity · 2014 · 60 citations

Engineering, Electrical Engineering, Physics +14

Development of a turbine cryocooler for high temperature superconductor applications

Hirokazu Hirai, Yoshikazu Suzuki, M. Hirokawa et al. · Physica C Superconductivity · 2009 · 31 citations

Engineering, Electrical Engineering, Materials Science +14

Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment

S. Yoshida, Hirokazu Hirai, N. Nara et al. · AIP conference proceedings · 2014 · 17 citations · Full text

Engineering, Mechanical Engineering, Air Conditioning +13

Development of a turbine-compressor for 10 kW class neon turbo-Brayton refrigerator

Hirokazu Hirai, M. Hirokawa, S. Yoshida et al. · AIP conference proceedings · 2014 · 15 citations · Full text

Engineering, Mechanical Engineering, Air Conditioning +9

NEW DESIGN OF NEON REFRIGERATOR FOR HTS POWER MACHINES

Shogo Yoshida, Hirokazu Hirai, A. Takaike et al. · AIP conference proceedings · 2010 · 14 citations · Full text

Engineering, Mechanical Engineering, Air Conditioning +10