Steam Generator by F.D. Drake, 1988 This component simulates the performance of a common steam boiler. Basically, it calculates the fuel and combustion air consumption as functions of the steam generation rate. A steam boiler can be viewed as a heat exchanger in combination with a combustion chamber. Fuel, which can be chosen to be coal, natural gas or oil for this model, is combusted with a certain amount of air in the combustion chamber. The hot combustion gases transform the feedwater to saturated or superheated steam in several stages, typically including the economizer, which preheats the water, the evaporator, and one or more steam superheaters. Performance tests conducted with natural gas and coal fired boilers at Madison Gas and Electric and at CSP, were used to check the accuracy of the model. "Evaluating Cogeneration Operations for a Campus Heating and Cooling Plant" M.S. Thesis by Drake, F.D. 1988