engleski

The effect of different temperature levels of the excess heat source on the levelized cost of excess heat

With environmental impact of the heating sector becoming a major issue, it is necessary to increase the share of sustainable and renewable energy sources used for heat production, that way reducing the emissions of greenhouse gases and local pollutants. In areas with higher heat demand densities, district heating systems are the most logical way of achieving these aims, especially when renewable energy sources or highly efficient cogeneration is used. However, excess heat from industry is also recognized as a valuable source with the high potential for utilization. Even though it is not necessary renewable at its source, it would otherwise be wasted in air or water and therefore it does not emit any additional pollutants. Furthermore it also increases the economic feasibility of the system due to the low operation and investment costs and no fuel costs. The main goal of this work is to use the previously developed levelized cost of excess heat method to evaluate the feasibility of excess heat utilization in a district heating system which uses different configurations, including a natural gas district heating plant. Temperature levels of the excess heat sources are a crucial parameter, which can significantly affect the overall feasibility of excess heat utilization in district heating systems. Therefore, these will be taken into account in the analysis to show changes in levelized cost of excess heat with different temperatures and the necessary preconditions in order to utilize this type of heat source.

district heating ; excess heat ; levelized cost of excess heat ; feasibility analysis

nije evidentirano