A state-of-the-art analysis and perspectives on the 4th/5th generation district heating and cooling systems

Yao, Shuai; Wu, Jianzhong; Qadrdan, Meysam

doi:10.1016/j.rser.2024.114729

Renewable and Sustainable Energy Reviews

2024

DOI: 10.1016/j.rser.2024.114729

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A state-of-the-art analysis and perspectives on the 4th/5th generation district heating and cooling systems

Shuai Yao,

Jianzhong Wu,

Meysam Qadrdan

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2024

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Cited by 3 publications

References 165 publications

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Comparative analysis of charging and discharging characteristics in novel cold and hot simultaneous energy storage tanks

Ren,

Xiao

2024

Journal of Building Engineering

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Comparative analysis of charging and discharging characteristics in novel cold and hot simultaneous energy storage tanks

Ren,

Xiao

2024

Journal of Building Engineering

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Use of Absorption Heat Pumps to Raise District Cooling Waste Heat Temperature for District Heating Supply in Tallinn: Technical and Economic Analysis

Kirs,

Sukumaran,

Latõšov

et al. 2024

Environmental and Climate Technologies

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Decarbonisation of District Heating (DH) networks is essential to achieving the European Union’s climate goals. In this context, there is growing interest among DH stakeholders in the recovery and reuse of underutilised heat sources. Waste heat recovery from district cooling (DC) networks offers a compelling option that can be used as input for various heat pump integrated DH solutions. In this regard, absorption heat pumps (AHP) showcase a promising solution to elevate a lower-temperature waste heat source with reduced electricity consumption. However, AHPs are not widely applied in DH context, primarily due to the lack of suitable waste heat sources or the necessary conditions for their effective operation. This article aims to explore various configurations of AHP and their potential integration with DC plant waste heat for DH application. The potential for adopting AHPs to boost efficiency and lower carbon emissions is evaluated through a techno-economic examination of three distinct technological configurations. For Tallinn case study, it was observed that AHPs can be more efficient, reduce energy consumption, and achieve a lower LCOH while being combined with HP condenser cooling. This study is expected to provide a theoretical support for the positive impact of using AHPs to reduce the usage of fossil fuels in the Tallinn DH network.

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Investigation of the Optimal Operation Method of the Heat Recovery Ground Source Heat Pump System Installed in an Actual Building and Evaluation of Energy Saving Effect

Katsura,

Nakamura,

Ohara

et al. 2024

Energies

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In this paper, a heat recovery ground source heat pump (HR-GSHP) system, in which the primary pipes of the GSHP for air conditioning and the GSHP for hot water are connected to ground heat exchangers (GHEs) and each GSHP is operated simultaneously or within a short period of time, was installed in a dormitory building on a trial basis. Then, the optimal operation method to minimize the energy consumption of the system was investigated. The operating period of the GSHP for HW was changed and simulations were conducted to determine the operating period with the lowest energy consumption, which was 8 months from April to November. Furthermore, the HR-GSHP system was operated for 8 years from 2012 to 2019, and actual measurements were carried out to verify the system performance and the energy saving effect in optimal operation. In actual operation, it was confirmed that the minimum temperature was about 10 °C or higher even when the GSHP for HW was operated year-round. Therefore, the GSHP for HW was operated year-round after the third year of operation. It was confirmed that the operation of the GSHP for HW in summer, especially in August and September when the cooling load is large, can improve the system’s efficiency by the effect of recovering cooling exhaust heat. In the eighth year of operation, when the GSHP for HW was operated most during the summer season, the system was able to reduce power consumption for air conditioning and hot water supply by approximately 17%.

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A state-of-the-art analysis and perspectives on the 4th/5th generation district heating and cooling systems

Cited by 3 publications

References 165 publications

Comparative analysis of charging and discharging characteristics in novel cold and hot simultaneous energy storage tanks

Comparative analysis of charging and discharging characteristics in novel cold and hot simultaneous energy storage tanks

Use of Absorption Heat Pumps to Raise District Cooling Waste Heat Temperature for District Heating Supply in Tallinn: Technical and Economic Analysis

Investigation of the Optimal Operation Method of the Heat Recovery Ground Source Heat Pump System Installed in an Actual Building and Evaluation of Energy Saving Effect

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