HTGR Knowledge Base
Conference Article: Recent research and development of intermediate heat exchanger for VHTR plant
Shimizu, Akira; Matsumura, Noboru; Nishikawa, Hidetsugu; Yamada, Seiya (Nagasaki Shipyard and Engine Works, Mitsubishi Heavy Industries, Ltd., Nagasaki (Japan))Abstract
This paper describes recent tests which show progress in design of Intermediate Heat Exchanger (IHX) for high-temperature gas cooled reactor plants developed for process heat application utilizing nuclear thermal energy. As the IHX must have a large heat exchanging capacity, the most important consideration is to design a compact heat exchanger having high efficiency. For the improvement of heat transfer characteristics, tests were performed at Mitsubishi Heavy Industries such as, trial manufacturing, heat transfer characteristic tests and nondestructive inspection tests of finned tubes. Results are as follows. (1) Finned tubes produced by rolling were able to be wound helically by bending machine. (2) Laboratory tests showed this tube had good heat transfer characteristics. (3) There was not much difference between finned tubes and bare tubes for detection of defects by the eddy current tests. (4) A trial assembly using the same scale model showed that the present design is easy to assemble. (5) Automatic orbital welding can be adopted for the welding between tube and tube sheet. As the result of the experiences gained from these successful tests, the design of the IHX has been greatly improved.
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key words: Gas Cooled Reactor, Nuclear Technology
- Reference:
- Specialists' meeting on heat exchanging components of
gas-cooled reactors Duesseldorf (Germany) 16-19 Apr 1984
- International Atomic Energy Agency, International Working Group on Gas-Cooled Reactors, Vienna (Austria)
- IWGGCR--9, pp:82-93
- International Atomic Energy Agency, International Working Group on Gas-Cooled Reactors, Vienna (Austria)