Simulation of Steam Generation in a Heat Exchanger

Abstract

An analog-computer flow chart is developed for use in setting up a simulation of the steam-generation process in a heat exchanger. It is assumed in the paper that the rate of heat flow from the primary side of the heat exchanger to the secondary side is already known. The technique described considers only the process in the secondary side of the heat exchanger. Factors such as variations in pressure, boiling-point temperature, induction water heat rate, heat of vaporization, specific volume of steam, and rate of secondary steam extraction are considered. Some simplifications are made e.g., that the secondary steam is always at saturation conditions and that water level control in the boiler is good. Use is made of steam table data in function generators so that a fairly large range of operating conditions can be simulated.