Research progress on the fifth-generation district heating system based on heat pump technology

Gong, Yuexuan; Ma, Guoyuan; Jiang, Yuepeng; Wang, Lei

doi:10.1016/j.jobe.2023.106533

Cited by 14 publications

(3 citation statements)

References 44 publications

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“…Therefore, heat pumps are being increasingly utilized in district heating systems across Europe. This includes integrating heat pumps with wastewater treatment plants [7] [8], incorporating booster heat pumps for buildings in Austria [9], utilizing large thermal energy storages in combination with heat pumps in Denmark [10], employing high-temperature heat pumps to lower the operating temperature of district heating networks [11], and deploying large-scale heat pumps capable of efficiently harnessing waste heat and electricity from 100% renewable sources [12].…”

Section: Climate Neutrality By 2040 -District Heatingmentioning

confidence: 99%

AbSolut - Integration of Absorption Technologies in District Heating and Cooling Systems for Enhanced Economic and Ecological Impact

Seidnitzer-Gallien,

Ribas-Tugores,

Zotter

2024

Int Sustain Ener Conf Proc

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District heating (DH) systems play a crucial role in meeting heating demands across the European Union (EU) and Austria, with significant potential for energy efficiency improvements and decarbonization. However, the transition towards climate neutrality by 2040 poses significant challenges, particularly in decarbonizing existing DH systems and integrating renewable energy sources. This work explores the application of absorption technologies, specifically absorption heat exchangers (AHX), absorption chillers (AC), and absorption heat pumps (AHP), in optimizing DH systems. The study investigates the utilization of AHX as transfer substations to increase heat capacity within existing grids by up to 30%, facilitating the integration of renewables and reducing distribution heat losses. Additionally, AC implementation for cooling supply demonstrates efficiency improvements through dynamic operation modes, renewable energy integration, and reduced electricity demand. Furthermore, AHP for waste heat utilization in DH power plants showcases environmental benefits, cost savings, and enhanced energy security. Through detailed techno-economic analyses and case studies, the paper evaluates the viability and economic feasibility of absorption technologies in DH applications. Challenges such as system integration, spatial requirements, and driving energy optimization are addressed, offering insights into overcoming barriers to adoption. Overall, the research highlights the transformative potential of absorption technologies in enhancing the efficiency, sustainability, and resilience of DH systems. By leveraging these technologies, DH operators and stakeholders can navigate the transition towards climate neutrality, while ensuring reliable and cost-effective heating and cooling solutions for urban areas.

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Section: Climate Neutrality By 2040 -District Heatingmentioning

confidence: 99%

AbSolut - Integration of Absorption Technologies in District Heating and Cooling Systems for Enhanced Economic and Ecological Impact

Seidnitzer-Gallien,

Ribas-Tugores,

Zotter

2024

Int Sustain Ener Conf Proc

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“…Saini et al [15] realised techno-economic analysis of solar thermal collectors and high-temperature heat pump systems. Gong et al [16] actualized a literature search for districh heating systems using heat pump system technologies. Assareh at al.…”

Section: Introductionmentioning

confidence: 99%

A case study on the technical and economical feasibility of different types of central heating systems for ÇATES lodgements

Öztürk

2023

NÖHÜ Müh. Bilim. Derg.

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In this study, the practicability of central heating systems of water source heat pump, coal and natural gas boiler-radiator are economically investigated for ÇATES lodgements in Zonguldak Çatalağzı. The effects of prices of coal, natural gas and electricity with TL/USD exchange rates over the total costs of these systems are also examined for next 15 year projections. The results indicate that natural gas boiler-radiator system is more applicable and the heat pump system comes the head to head point with the coal boiler-radiator system in the total costs 3.5 years approximately after their installations because of increasing prices of coal. Under the conditions that the other variables are in the trends of the last ten years, the increase in the value of dollar decreases the costs of all systems and prolongs the time of reaching to the head to head point for the systems of heat pump and coal. Moreover, ascending electricity’s price significantly increases the cost of heat pump system. Coal heating system become more economic according to heat pump system by 13% decrease in coal’s price every year, and annual 12% increment in the price of natural gas makes heat pump system feasible

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“…It was built on the larger compression-cooling systems and cold-water distribution fluid [8]. The third generation of cooling systems (3GDC) used water as the transfer fluid and included a more diverse cold supply using absorption cooling systems, compression chillers, surplus cold streams, and cold storages [9]. The use of locally accessible resources and the phase-out of refrigerants with substantial ozone layer depletion are two characteristics of 3GDC.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Dynamic Simulation of a Phase-Change Material Tank for Powering Chiller Generators in District Cooling Networks

2023

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Latent heat storage in district cooling systems (DCS) offers advantages such as energy efficiency, load shifting, and flexibility. It optimizes energy utilization by storing thermal energy during off-peak hours and using it during peak periods. This results in cost savings, a reduced environmental impact, and the enhanced reliability of the cooling system. In the present study, a novel system consisting of a phase-change material (PCM) tank coupled to a 120 kW chiller generator for cooling is proposed. During peak cooling loads, the proposed PCM tank is intended to supply consistent thermal power at an appropriate temperature. The system is modeled using the lumped-capacitance approach, and the effective thermal capacity approach is used to model the PCM’s phase-transition phenomena. The system’s dynamic performance is evaluated, and the impact of various parameters during the PCM-tank discharging process is analyzed. The computational findings are compared to experimental data taken from a real district network, and there is excellent agreement. Results showed that increasing the needed heat rate for the cooling process from 120 kW to 160 kW decreases the PCM tank’s discharging duration by about 20% and increases pump energy consumption. It was also found that increasing the capacity of the PCM tank is advantageous for the cooling process as it extends the duration of 120 kW constant power production by about 62% when the tank volume is increased from 5 m3 to 10 m3. Finally, it was shown that the choice of the PCM type is crucial for improving the cooling performance. Erythritol is a suitable storage medium in the tank compared to A118 and MgCl2·6H2O, and using erythritol instead of PCM A118 increases the period of continuous thermal power generation by about 67%.

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Research progress on the fifth-generation district heating system based on heat pump technology

Cited by 14 publications

References 44 publications

AbSolut - Integration of Absorption Technologies in District Heating and Cooling Systems for Enhanced Economic and Ecological Impact

AbSolut - Integration of Absorption Technologies in District Heating and Cooling Systems for Enhanced Economic and Ecological Impact

A case study on the technical and economical feasibility of different types of central heating systems for ÇATES lodgements

Modeling and Dynamic Simulation of a Phase-Change Material Tank for Powering Chiller Generators in District Cooling Networks

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