瞬間式ガス給湯器の過渡特性 : 広温度域での熱伝導率

概要

論文の詳細を見る
Home use type instantaneous gas water heaters have reduced remarkably its own sizes, mainly because a new gas burning technology was invented several years ago. Coresponding to the minimization of the combustion room size, the temperature of some particular portions of the heat exchanger's fins are expected to be extremely high. To estimate them, the most important item in designing, the value of heat transfer coefficient on burned gas side surface is necessary. It has not been reported so far, especially for the case of wide temperature change range like of these units. The objectives of this work are to formulate the calculation method of this value, and to simulate the transient temperature change of all parts in the heat exchanger. The present report concerns the theoretical results of the burned gas's spesific heat change with respect to its temperature, and numerical calculation results of simply modified heat transfer system.
沼津工業高等専門学校の論文
1992-01-30