Combined Heat and Power Technologies: Application Studies of Options Including Micro Gas Turbines

Abstract

Recently, several methods have been developed to select and optimize energy systems with the purpose of finding the most economical solution that supplies the required energy demand. This paper presents a theoretical study of cogeneration technolgies, which includes a qualitative survey, and technical and economical arguments to define which combinations of supply technologies can be expected to serve six different demand cases. The comparison from economical viewpoint, based on annualized capital and operatinal costs of the system, shows a trend to use backpressure steam turbine for small cases (power demand ≤ 5MW) and industrial gas turbine for big cases (power demand ≥ 5MW).