A Study of a Power System by Utilizing Natural Circulation Effective Utilization of Heat Sources : 1st Report, Principles and Theoretical Performance Analysis

Abstract

A power generating system utilizing natural circulation is proposed in order to use a large quantity of low-temperature heat effectively. First, the dimensionless performance characteristics of the output were obtained by a simple approximated theoretical analysis on the assumption of no slip between liquid and vapor, and constant friction losses over the tube length. Next, a more detailed theoretical analysis was made, taking the above assumption into account, and was applied to a system of actual size, using R-113 as a working medium. The effects of each parameter on the performance were shown. Furthermore, the influence of local heating on the output was discussed.