Thermal Power Systems Advanced Solar Thermal Technology Project HEAP:Heat Energy Analysis Program A Computer Model Simulating Solar Receivers

摘要

Thermal design of solar receivers is commonly accomplished via models, where the receiver is treated as an isothermal box with lumped quantities of heat losses to the surroundings by radiation, conduction and convection.nThese approximate models, though adequate for preliminary design purposes, are not detailed enough to distinguish between different receiver designs, or to predict transient performance under variable solar flux, ambient temperatures, etc. A computer code has been written for this purpose and is given the name "HEAP", an acronym for Heat Energy Analysis Program. HEAP has a basic structure that fits a general heat transfer problem, but with specific features that are custom-trade for solar receivers. The code is written in MBASIC computer language.nThis document explains the detailed methodology followed in solving the heat transfer problem, and includes a program flow chart, an explanation of input and output tables, and an example of the simulation of a cavity-type solar receiver.