Estimating the potential of industrial (high-temperature) heat pumps for exploiting waste heat in EU industries

Kosmadakis, George

doi:10.1016/j.applthermaleng.2019.04.082

Cited by 112 publications

(58 citation statements)

References 40 publications

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“…A promising approach to achieve these goals, which has been increasingly investigated in recent years, is the integrated use of high temperature heat pumps in combination with thermal storage tanks for combined heating and cooling demands in industrial applications [6][7][8]. Of special interest regarding environmental sustainability is the use of natural refrigerants with low global warming potential (GWP) and known effects on the atmosphere for the operation of heat pump and refrigeration systems to avoid undesirable side effects [2].…”

Section: Introductionmentioning

confidence: 99%

Integrated high temperature heat pumps and thermal storage tanks for combined heating and cooling in the industry

Ahrens

Foslie

Moen

et al. 2021

Applied Thermal Engineering

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This study investigates the integrated heat pump system of a green-field dairy located in Bergen, Norway. The purpose of the study is to determine the energy consumption and system performance. The dairy features a novel and innovative solution of a fully integrated energy system, employing high temperature heat pumps such as the hybrid absorption-compression heat pump (HACHP) with natural refrigerants to provide all temperature levels of heating and cooling demands. To evaluate the performance an energy analysis has been performed based on available process data for a comparatively energy-intensive week in February. The results have shown that the integrated system is able to meet the occurring demands. Furthermore, the specific energy consumption with 0.22 kWh l − 1 product can outperform the annual average value of the replaced dairy even under difficult conditions. However, it is expected that the specific energy consumption will be further reduced on an annual basis. Through measures such as the extensive use of waste heat recovery accounting for 32.7% of the energy used, energy consumption was reduced by 37.9% and greenhouse gas (GHG) emissions by up to 91.7% compared to conventional dairy systems. Simultaneous, the process achieves a waste heat recovery rate of over 95%. Furthermore, demand peaks were compensated and a system coefficient of performance (COP) of 4.1 was achieved along with the identification of existing potential for further improvements.

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Section: Introductionmentioning

confidence: 99%

Integrated high temperature heat pumps and thermal storage tanks for combined heating and cooling in the industry

Ahrens

Foslie

Moen

et al. 2021

Applied Thermal Engineering

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“…There are many industries which require heat such as chemical, food and drink, textiles and metal processing. The 28 members of the European Union required 1820 TWh of energy as heat across all industries in 2018, which amounts to around 70% of total energy consumption by industry [1]. More than 48% of this heat is over 500 °C with up to 28% hotter than 1000 °C.…”

Section: Introduction 24mentioning

confidence: 99%

Carbon dioxide decomposition through gas exchange in barium calcium iron niobates

Kildahl

Li²,

Slater

et al. 2021

Catalysis Today

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“…A recent study showed that for the EU alone, waste heat potential in industry amounts to 304.13 TWh/year [1]. The fundamental technology to convert low-grade heat to electricity or to upgrade it to a higher temperature is available [2]. One of the most mature technologies, which is offered commercially, is the organic Rankine cycle (ORC).…”

Section: Introductionmentioning

confidence: 99%

Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application

et al. 2019

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Supercritical operation is considered a main technique to achieve higher cycle efficiency in various thermodynamic systems. The present paper is a review of experimental investigations on supercritical operation considering both heat-to-upgraded heat and heat-to-power systems. Experimental works are reported and subsequently analyzed. Main findings can be summarized as: steam Rankine cycles does not show much studies in the literature, transcritical organic Rankine cycles are intensely investigated and few plants are already online, carbon dioxide is considered as a promising fluid for closed Brayton and Rankine cycles but its unique properties call for a new thinking in designing cycle components. Transcritical heat pumps are extensively used in domestic and industrial applications, but supercritical heat pumps with a working fluid other than CO2 are scarce. To increase the adoption rate of supercritical thermodynamic systems further research is needed on the heat transfer behavior and the optimal design of compressors and expanders with special attention to the mechanical integrity.

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Estimating the potential of industrial (high-temperature) heat pumps for exploiting waste heat in EU industries

Cited by 112 publications

References 40 publications

Integrated high temperature heat pumps and thermal storage tanks for combined heating and cooling in the industry

Integrated high temperature heat pumps and thermal storage tanks for combined heating and cooling in the industry

Carbon dioxide decomposition through gas exchange in barium calcium iron niobates

Review of Experimental Research on Supercritical and Transcritical Thermodynamic Cycles Designed for Heat Recovery Application

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