Title:
STEAM GENERATOR AND HEAT TRANSFER TUBE FOR SAME
Document Type and Number:
Japanese Patent JPH06300211
Kind Code:
A
Abstract:
PURPOSE: To provide a multitube type heat transfer tube which has a high adherence between constituent tubes even when it is manufactured by cold working and is not deteriorated in adherence in a high temperature condition during operation of a steam generator.
CONSTITUTION: A heat transfer tube is formed from at least three concentrically arranged tubes, and an intermediately arranged tube 26 is formed from a material which is greater in malleability and a rate of thermal expansion than those of tubes 16, 17 arranged inside and outside the tube 26.
Inventors:
SATO YOSHIHIKO
YOKOTA NORIKATSU
YOKOTA NORIKATSU
Application Number:
JP8186893A
Publication Date:
October 28, 1994
Filing Date:
April 08, 1993
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F22B1/06; F22B37/10; F28F19/02; G21C1/02; (IPC1-7): F22B37/10; F22B1/06
Attorney, Agent or Firm:
Akio Takahashi (1 person outside)