Energy’ conversion cogeneration

Cogeneration is an energy conversion process wherein heat from a fuel is simultaneously converted to useful thermal energy (e.g., process steam) and electric energy. The need for either form can be the primary incentive for cogeneration, but there must be opportunity for economic captive use or sale of the other. In a chemical plant the need for process and other heating steam is hkely to be the primaiy in a pubhc utility plant, electricity is the usual primary produc t. 

Cogeneration is the production of two useful forms of energy in a single energy conversion process. For example, a gas turbine may produce both rotational energy for an electric generator and heat for a building. 

In this chapter, we explore how the exergy concept can be used in the analysis of energy conversion processes. We provide a brief overview of commonly used technologies and analyze the thermodynamic efficiency of (1) coal and gas combustion, (2) a simple steam power plant, (3) gas turbine, and (4) combined cycle and cogeneration. At the end of this chapter, we summarize our findings with some concluding remarks. 

Therefore, it is anticipated that this initial project will lead to broader social and environmental advances and act as a model for further cogeneration plants. Conversion of hydro, wind and, solar energy to electricity and to hydrogen will open a new venue for the efficient utilization of renewable energy resources in Azerbaijan. 

Prasad, S. B., Biomass-fired steam power cogeneration system - A theoretical-study. Energy Conversion Manage 1995, 36 (1), 65-77. 

Cogeneration - The generation of electricity or shaft power by an energy conversion system and the concurrent use of rejected thermal energy from the conversion system as an auxiliary energy source. 

The BN GT-300 (ANNEX XVIII) is a transportable modular nuclear cogeneration plant of 300 MW(e) based on a small sodium cooled reactor with fast spectrum of neutrons and a gas turbine cycle for energy conversion. The refuelling interval is designed to be 4.5-6 years. The concept provides the possibility of having several modules of the reactor mounted in railway cars and has no intermediate heat transport system. The modules are delivered to the site by railway and fixed and connected to each other under a shelter. 

Incorporation of a cogeneration design in the energy conversion system and a large design allowance for fuel failure ensures that there is no reactor trip in the event of a turbine trip. 

A multi-path cogeneration system for energy conversion (turbine, chemical heat pipe system, etc.). 

The BN GT-300 is a transportable modular nuclear cogeneration plant based on a small sodium cooled reactor with fast spectrum of neutrons and a gas turbine cycle for energy conversion [XVni-1]. 

FIG. XIX-2. ACACIA cogeneration cycle main parameters for the energy conversion system. 

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