One of the most effective measures for increasing energy efficiency is the use of polygeneraton systems for simultaneous heating, cooling and electricity production. An integrated process which has three or more outputs, that include energy outputs, produced from one or more natural resources. In this way, a substantial increase in overall efficiency is achieved, and thus, indirectly, a reduction of pollution and green house gas emissions. Small scale polygeneration systems involve a combination of conventional and new technologies for heating cooling and electricity production, but also other products such as CO 2 , bio-fuels etc. Polygeneration system may be modeled as a combination of its components as substructures. The system is than built by connecting substructure models. The connections are made in node points where the flows cross the set control volumes. Generally, the behavior of a polygeneration system is represented by a set of nonlinear differential equations and a system of non linear algebraic equations.
Published in Chapter:
Systems with Concentrating Solar Radiation
Saša R. Pavlović (University of Niš, Serbia) and Velimir P. Stefanović (University of Niš, Serbia)
Copyright: © 2014
|Pages: 58
DOI: 10.4018/978-1-4666-4450-2.ch031
Abstract
In this chapter, description and working principles of the parabolic trough power plants, solar tower power plants, parabolic dish power plants, and power plants with Fresnel reflectors in the world and their potential use in Serbia are given. In addition, the examples and technical characteristics of some concetrating solar power plants in the world are given. The cases in which solar cells are used to generate electrical energy are very rare. Solar systems referred as mid temperature (100–400 oC) are considered suitable for integration with industrial processes, cooling, and polygeneration systems through use of concentrating solar collectors. The results of this research may be applied in the construction of small solar systems, but also in the design and construction of large polygeneration systems. Physical and mathematical model is presented, as well as numerical procedure for predicting thermal performances of the P2CC (Parabolic-and-Circular Collector) solar concentrator.