Energy flexible heat pumps in industrial energy systems: A review

Sadjjadi, Bijan Seyed; Gerdes, Jan-Niklas; Sauer, Alexander

doi:10.1016/j.egyr.2022.12.110

Cited by 11 publications

(5 citation statements)

References 34 publications

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“…This review demonstrates that the existing literature assesses the flexibility potential of industrial thermal processes by oversimplifying or neglecting them. As highlighted also by Sadjjadi et al [30], a techno-economic analysis of energy-flexible heat pumps in different industrial processes should be carried out. The current state of the art focuses on a few already existing power-to-heat appliances (e.g., electric arc furnaces and electric boilers) but fails to address the upcoming electrification of industrial processes, thus completely neglecting high temperature heat pumps.…”

Section: Demand Response Investigation In Industrial Thermal Processesmentioning

confidence: 95%

Assessing the Flexibility Potential of Industrial Heat–Electricity Sector Coupling through High-Temperature Heat Pumps: The Case Study of Belgium

Magni,

Peeters,

Quoilin

et al. 2024

Energies

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Thermal processes represent a significant fraction of industrial energy consumptions, and they rely mainly on fossil fuels. Thanks to technological innovation, highly efficient devices such as high-temperature heat pumps are becoming a promising solution for the electrification of industrial heat. These technologies allow for recovering waste heat sources and upgrading them at temperatures up to 200 °C. Moreover, the coupling of these devices with thermal storage units can unlock the flexibility potential deriving from the industrial sector electrification by means of Demand-Side Management strategies. The aim of this paper is to quantify the impact on the energy system due to the integration of industrial high-temperature heat pumps and thermal storage units by means of a detailed demand–supply model. To do that, the industrial heat demand is investigated through a set of thermal process archetypes. High-temperature heat pumps and thermal storage units for industrial use are included in the open-source unit commitment and optimal dispatch model Dispa-SET used for the representation of the energy system. The case study analyzed is Belgium, and the analysis is performed for different renewable penetration scenarios in 2040 and 2050. The results demonstrate the importance of a proper sizing of the heat pump and thermal storage capacity. Furthermore, it is obtained that the electrification of the thermal demand of industrial processes improves the environmental impact (84% reduction in CO2 emissions), but the positive effect of the energy flexibility provided by the heat pumps is appreciated only in the presence of a very high penetration of renewable energy sources.

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Section: Demand Response Investigation In Industrial Thermal Processesmentioning

confidence: 95%

Assessing the Flexibility Potential of Industrial Heat–Electricity Sector Coupling through High-Temperature Heat Pumps: The Case Study of Belgium

Magni,

Peeters,

Quoilin

et al. 2024

Energies

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“…Waste heat presents a valuable resource owing to its relatively elevated temperature range, typically between 30 and 70°C. In contrast to conventional applications, High-Temperature Heat Pumps are engineered to elevate heat to 150-160 °C [3], [4]. This necessitates robust compressors and suitable refrigerants with low environmental impact, such as those with minimal global warming potential.…”

Section: High-temperature Heat Pump Performancementioning

confidence: 99%

“…A recent study estimated the 2023 installed capacity at 5.0 GWpeak, double the 2022 estimates [3]. In the coming twelve months, these PV unlicensed "rooftop" installations will overtake the 6.3 GW of licensed renewable energy capacity brought into operation under the Renewable Energy Independent Power Producer Programme [4]. Furthermore, an electricity wheeling framework has been introduced, paving the way for largescale, offsite electricity generation installations [5].…”

Section: Introductionmentioning

confidence: 99%

Analysing the Techno-Economic Viability of Different Solar Heating Systems in South African Beverage Plants

Koke,

Rozon,

McGregor

2024

Int Sustain Ener Conf Proc

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With ongoing real-term reductions in the cost of renewable energy technologies, opportunities to reduce carbon emissions within industry have improved. While the South African industrial sector has been investing in photovoltaics to meet electricity requirements, little has been done to replace fossil fuels used for the generation of process heat, representing two-thirds of the energy consumed. While previous studies have demonstrated the benefits and limitations of solar thermal (ST) energy solutions for industrial applications, recent developments in high-temperature heat pumps (HTHP) offer opportunities for novel configurations, including the use of renewable energy like photovoltaics (PV). This study compares the techno-economic benefits of solar thermal energy systems with PV-supported HTHP systems within the South African beverage sector. After a general consideration, simulation calculations are presented for selected applications. The cost of heat is determined for PV-heat pump systems operating on a stand-alone basis and with heat storage. The study finds that the levelised cost of heat of US$0.050-0.073/kWhth is at least twice that of coal-fired steam boilers. The study, therefore, calls for further work on optimising systems minimising steam requirements, and thereby improving the economics of heat pumps and for a coordinated effort to support the development and financing of high-temperature heat pumps for industrial applications.

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“…Heat pumps are becoming increasingly important as efficient and clean renewable energy devices in the face of the global energy crisis. At the same time, it allows thermal energy to be converted through heat pumps, enabling the effective application of lowtemperature heat [3]. These systems have been successfully used in a wide range of locations around the world, from the Parliament House in Zurich, Switzerland, to numerous installations across Japan, the United States, Sweden, and South Korea [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Temperature Drainage and Environmental Impact of Water Source Heat Pump Energy Station

Ren,

Yang,

Zhang

et al. 2024

Water

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The discharge of warm water from water source heat pump (WSHP) energy stations can cause local changes in the water temperature, leading to changes in the water quality around and downstream of the discharge outlet, resulting in a cumulative effect that alters the aquatic habitat elements and affects the ecosystem stability. This study took the demonstration project of the water source heat pump energy station in the Hankou Binjiang International Business District of Wuhan City as an example. Based on measured data, this study established the control equation for the warm water discharge of the project and used FLUENT 2022 R1 software to establish a numerical model of warm water diffusion. This study analyzed the changes in discharge water temperature during unfavorable conditions in both summer and winter during dry and wet seasons by using four parameters: equal area surface, volume, length, and width of the area of influence. The results suggest that the impact of the project’s warm water discharge on the temperature of the river body will quickly decay and its impact range will be limited. Hence, the project will not have adverse effects on the water and ecological environment in the mid–lower reaches of the Yangtze River.

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Energy flexible heat pumps in industrial energy systems: A review

Cited by 11 publications

References 34 publications

Assessing the Flexibility Potential of Industrial Heat–Electricity Sector Coupling through High-Temperature Heat Pumps: The Case Study of Belgium

Assessing the Flexibility Potential of Industrial Heat–Electricity Sector Coupling through High-Temperature Heat Pumps: The Case Study of Belgium

Analysing the Techno-Economic Viability of Different Solar Heating Systems in South African Beverage Plants

Temperature Drainage and Environmental Impact of Water Source Heat Pump Energy Station

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