Simulation based evaluation of large scale waste heat utilization in urban district heating networks: Optimized integration and operation of a seasonal storage

In this paper, to achieve waste heat utilization of large-scale comprehensive public study of Shenyang part of large-scale comprehensive hospital, first it has carried on the statistics of hospital waste heat utilization of point, adopting the K - means methods to classify the hospital waste heat utilization point and analyze the waste heat and establish waste heat utilization system .Then four paths of waste heat utilization have been got to get a further hospital waste heat utilization system of waste heat recovery efficiency, optimization study for the future.

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Effects of Pipe Network Composition and Length on Power Plant Waste Heat Utilization System Performance for Large-scale Horticulture Facilities

Transactions of the Korea Society of Geothermal Energy Engineers ◽

10.17664/ksgee.2015.11.4.014 ◽

2015 ◽

Vol 11 (4) ◽

pp. 14-21 ◽

Cited By ~ 1

Author(s):

Keum ho Lee ◽

Jae Ho Lee ◽

Kwang Ho Lee

Keyword(s):

Power Plant ◽

System Performance ◽

Large Scale ◽

Waste Heat ◽

Pipe Network ◽

Heat Utilization ◽

Plant Waste ◽

Network Composition ◽

Waste Heat Utilization

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Highly Renewable District Heat for Espoo Utilizing Waste Heat Sources

Energies ◽

10.3390/en13143551 ◽

2020 ◽

Vol 13 (14) ◽

pp. 3551 ◽

Cited By ~ 2

Author(s):

Pauli Hiltunen ◽

Sanna Syri

Keyword(s):

Data Center ◽

Waste Heat ◽

District Heating ◽

Large Data ◽

Heat Pumps ◽

Electricity Price ◽

Production Costs ◽

Operation Strategy ◽

Heat Utilization ◽

Waste Heat Utilization

The district heating operator Fortum and the city of Espoo have set a goal to abandon the use of coal in district heating production and increase the share of renewable sources to 95% by the year 2029. Among renewable fuels and heat pumps, waste heat utilization has an important role in Fortum’s plans for the decarbonization of district heating production, and Fortum is considering the possibility of utilizing waste heat from a large data center in its district heating network. The goal of this paper is to investigate the feasibility and required amount of waste heat to achieve this goal. Two different operation strategies are introduced—an operation strategy based on marginal costs and an operation strategy prioritizing waste heat utilization. Each strategy is modeled with three different electricity price scenarios. Because the low temperature waste heat from a data center must be primed by heat pumps, the electricity price has a significant impact on the feasibility of waste heat utilization. Prioritizing waste heat utilization leads to higher production costs, but a lower waste heat capacity is needed to reach the goal of 95% renewables in production. The higher electricity price emphasizes the differences between the two operation strategies. Waste heat utilization also leads to significant reductions of CO2 emissions.

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