Optimization of local cogeneration stations | IEEE Conference Publication | IEEE Xplore

Optimization of local cogeneration stations


Abstract:

This paper presents a mathematical model that is developed to economically optimize a small and a medium-sized local cogeneration system. This model was developed to find...Show More

Abstract:

This paper presents a mathematical model that is developed to economically optimize a small and a medium-sized local cogeneration system. This model was developed to find the economically optimal configuration of the cogeneration system with respect to state aid, which forms a significant part of the revenue for small and medium-sized systems. The model respects the production of heat, so it won't be exceeded the economically justifiable demand, which means that the same amount of heat will be produced as in the supply of heat through conventional sources, which is essential for obtaining the aid. Therefore, the model is suitable for use in the design of cogeneration systems with average seasonal heat demand up to 5 MW. These are typical hospitals, hotels, office buildings and small factories. The model can design an accumulation tanks and a bivalent heat source to cover the maximum and minimum peaks in heat requirements, it also respects the thermal losses of buildings and climatic data in the given location. It is also possible to design a system for the preparation of hot water during the summer months.
Date of Conference: 16-18 May 2018
Date Added to IEEE Xplore: 28 June 2018
ISBN Information:
Electronic ISSN: 2376-5631
Conference Location: Brno, Czech Republic

I. Introduction

As a result of the gradual reduction of heat demand from large central sources, the construction of new cogeneration plants is starting to focus on lower outputs. Such stations are generally constructed from modular cogeneration units with combustion piston engines for natural gas. The advantage of these units is the short starting time, high electrical efficiency and almost unlimited variability in the construction of the cogeneration station. Another advantage of these units is the transfer of heat output by water, usually with a temperature gradient of 90/70 °C. These heating water parameters are suitable for accumulation in construction and production-friendly water storage tanks, which allow the full load of the cogeneration system to achieve maximum electrical efficiency. The principles of cogeneration plants and its optimal work [1], [2]. Specific micro combined heat and power principles and applications possibilities [3].

References

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