Analysis of operational data from a district cooling system and its connected buildings

Jangsten, Maria; Lindholm, Torbjörn; Dalenbäck, Jan-Olof

doi:10.1016/j.energy.2020.117844

Cited by 25 publications

(10 citation statements)

References 9 publications

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“…Due to several reasons, degradations occur over time, which deteriorates the standard temperature difference between the supply and return water that in turn affects the performance of the system. A research project was conducted on the low delta-T problem of the DCS in Gothenburg, Sweden [67]. The problem was analyzed by collecting operational data from the Gothenburg district cooling system along with chilled water systems from 37 of the connected buildings.…”

Section: Application Technology Readiness Level and Performance With A Focus On Resiliencementioning

confidence: 99%

Review on District Cooling and Its Application in Energy Systems

Sayadi¹,

Akander²,

Hayati³

et al. 2023

Urban Transition - Perspectives on Urban Systems and Environments

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This chapter investigates the implementation of district cooling systems by exploring several research studies reported in the literature. The topics addressed include typologies and design parameters, benefits and limitations, applications of the system, and the technology readiness level. District cooling systems are generally regarded as cost-efficient and environmentally friendly solutions. One might think that district cooling is only a solution for areas with a very warm climate. However, based on the reported results of the surveyed studies, the number of operating district cooling systems has increased over the years, with the Scandinavian countries taking the lead in this market within European countries. Implementation of these systems concluded reduction in primary energy and electricity use, they also proved to be an environmentally efficient way.

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Section: Application Technology Readiness Level and Performance With A Focus On Resiliencementioning

confidence: 99%

Review on District Cooling and Its Application in Energy Systems

Sayadi¹,

Akander²,

Hayati³

et al. 2023

Urban Transition - Perspectives on Urban Systems and Environments

View full text Add to dashboard Cite

show abstract

“…Equation ( 52) calculates the cooling power transferred with a pipeline, based on the mass flow rate and specific heating capacity of water, as well as change in the temperature of the water. Equations ( 53)-( 55) formulate constraints on node temperature, cooling power transferred through a pipeline, and capacity of cooling stations associated with each DSO, respectively [61].…”

Section: District Heating Network Modellingmentioning

confidence: 99%

A tri‐level approach for coordinated transmission and distribution system expansion planning considering deployment of energy hubs

Allahvirdizadeh

Shayanfar

Moghaddam

2022

IET Generation Trans & Dist

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This paper presents a tri‐level stochastic coordinated transmission and distribution system expansion (CTDS) planning considering the deployment of energy hubs (EHs) across the distribution systems (DSs). The first level of the proposed optimization approach deals with transmission system expansion planning (TEP), while the second level develops distribution system expansion planning (DEP). Market clearing is done in the third level to update the locational marginal prices (LMPs) for different distribution system operators (DSOs). The EHs include photovoltaic cells (PVs), wind turbines (WTs), combined heating and power units (CHPs), boilers, and electrical and absorption chillers. The proposed tri‐level approach is solved with an iterative algorithm based on the diagonalization approach and tested on the modified IEEE 30‐bus transmission systems (TS) with several DSOs. Each DSO includes 18‐bus electrical, heating, and cooling energy systems. The numerical analysis shows that the total cost of the transmission system operator (TSO) is not changed with implementing the uncoordinated approach. However, the total cost of the whole system is reduced by 6.54% with accommodation of the EHs in the uncoordinated approach. Moreover, the total cost of the TSO as well as the whole system are reduced by 41.11% and 16.96%, respectively, with the proposed (CTDS) planning.

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“…The total daily space heating (SH) demand for each geographical zone was calculated based on the proportion of day-specific heating, in degree days [20]. Some studies also have been conducted to evaluate heat losses in DH systems by efficient transmission loads along a distribution network [21,22] as well as determining the location of thermal energy demands [23,24]. Discovering the location of huge thermal demands (large building size and high demand) in terms of DH network energy efficiency is crucial.…”

Section: Background District Heat Network (Dhn)mentioning

confidence: 99%

Heat Mapping, a Method for Enhancing the Sustainability of the Smart District Heat Networks

2021

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District heating (DH) has a major potential to increase the efficiency, security, and sustainability of energy management at the community scale. However, there is a huge challenge for decision makers due to the lack of knowledge about thermal energy demand during a year. Thermal energy demand is strongly dependent on the outdoor temperature, building area, and activities. In this context, this paper presents an innovative monthly thermal energy mapping method to calculate and visualize heat demand accurately for various types of buildings. The method includes three consecutive phases: (i) calculating energy loss, (ii) completing a dataset that includes energy and building information, and (iii) generating the monthly heat demand maps for the community. Determining the amount of demand and the best location for energy generators from the perspective of energy efficiency in a DH system in an urban context is one of the important applications of heat maps. Exploring heat demand characteristics and visualizing them on maps is the foundation of smart DHs.

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Analysis of operational data from a district cooling system and its connected buildings

Cited by 25 publications

References 9 publications

Review on District Cooling and Its Application in Energy Systems

Review on District Cooling and Its Application in Energy Systems

A tri‐level approach for coordinated transmission and distribution system expansion planning considering deployment of energy hubs

Heat Mapping, a Method for Enhancing the Sustainability of the Smart District Heat Networks

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