Location History:
- Ibaraki, JP (1986 - 1999)
- Ibaraki-ken, JP (2000 - 2002)
Company Filing History:
4 out of 836 
1 out of 42,496 
1 out of 832,843 Years Active: 1986-2002
Title: Tadao Otani: Innovator in Heat Transfer Technology
Introduction
Tadao Otani is a prominent inventor based in Ibaraki-ken, Japan. He has made significant contributions to the field of heat transfer technology, particularly in the development of efficient heat transfer pipes for refrigerant mixtures. With a total of 5 patents to his name, Otani's work has had a substantial impact on refrigeration systems.
Latest Patents
One of Otani's latest patents is a heat transfer pipe designed for refrigerant mixtures. This innovative pipe aims to provide high heat transfer performance in condensers and evaporators used in refrigerating cycles. The design features main grooves and auxiliary grooves on the inner surface, which intersect to enhance heat transfer efficiency. The main grooves are separated by ridges, which are further divided into ribs by the auxiliary grooves. This unique configuration allows for a longer rib length compared to the ridges, optimizing the flow of refrigerant and reducing pressure gradients within the pipe.
Another notable patent focuses on a heat transfer tube for zeotropic refrigerant mixtures. The inner surface of this tube is designed with grooves that intersect, or it may feature independent projections. This design stirs the concentration boundary layers generated in the refrigerant mixture, effectively reducing diffusion resistance and promoting better heat transfer performance. The resulting heat transfer tube is integral to the functionality of cross-fin tube type heat exchangers, refrigerators, and air conditioners.
Career Highlights
Throughout his career, Tadao Otani has worked with reputable companies such as Hitachi Cable, Inc. and Hitachi, Ltd. His experience in these organizations has allowed him to refine his expertise in heat transfer technologies and contribute to various innovative projects.
Collaborations
Otani has collaborated with notable colleagues, including Masaaki Itoh and Mari Uchida. These partnerships have fostered a creative environment that has led to advancements in their respective fields.
Conclusion
Tadao Otani's contributions to heat transfer technology exemplify his innovative spirit and dedication to improving refrigeration systems. His patents reflect a deep understanding of the complexities involved in heat transfer processes, making him a significant figure in the industry.