A model of economic and exergetic optimisation analysis - a case study of space heating systems

Abstract

Exergy represents the useful energy and it is interpreted as available work. Quality in energy conversion can be quantified through exergetic analysis based on the Second Principle of Thermodynamics (SPT). The design of energy systems is important in such way that the energy quality of an end-use is matched as much as possible to the energy supply, avoiding situations where a high quality supply is used for a low quality purpose. The extension of the efficiency criterion to include the SPT would result in fundamental changes in the way electric energy systems are designed and operated. The optimisation of a constraint space-heating system was investigated. This paper analyses the application of the SPT in the planning of electric energy systems case studies including exergetic efficiency achievement with economic considerations. Keywords: Optimisation of Power Systems, Exergy, Integrated Resource Planning, Demand Side Management, Space Heating Systems.