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  • Author: Alona Bolonina x
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Analysis of the Impact of Decreasing District Heating Supply Temperature on Combined Heat and Power Plant Operation

Abstract

District heating systems are widely used to supply heat to different groups of heat consumers. The district heating system offers great opportunities for combined heat and power production. In this paper decreasing district heating supply temperature is analysed in the context of combined heat and power plant operation. A mathematical model of a CHP plant is developed using both empirical and theoretical equations. The model is used for analysis of modified CHP plant operation modes with reduced district heating supply temperature. Conclusions on the benefits of new operation modes are introduced.

Open access
Compact Solar Combisystem for an Apartment Building

Compact Solar Combisystem for an Apartment Building

The Riga Technical University Institute of Energy Systems and Environment, in cooperation with three Latvian companies, is implementing the project "Compact solar and pellet module" financed by the European Union. Within the framework of this project a combisystem will be installed in the Grandeg Ltd modular pellet boiler house. The solar combisystem will provide domestic hot water and space heating load for an apartment building in Sigulda. Due to the limited amount of space in the modular boiler house, optimal decisions should be made on the technical parameters of the system, including the volume of the heat storage tank and the surface area of solar collectors. Every alternative has both advantages and disadvantages. Economic factors of various alternatives are analyzed.

Open access