Theoretical analysis of steam generation methods - Energy, CO 2 emission, and cost analysis

Bless, Frédéric; Arpagaus, Cordin; Bertsch, Stefan S.; Schiffmann, Jürg

doi:10.1016/j.energy.2017.04.088

Cited by 34 publications

(23 citation statements)

References 13 publications

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“…In this case, the heat pump COSP would be much higher and equal to their COP, making heat pumps favourable over natural gas boilers in all the considered conditions. This finds agreement in other reported studies [3,26,28]. The COP performance in the investigated working domain is reported in Appendix B. Exergetic efficiency, on the other hand, accounts for the quality of energy and showed higher values for heat pumps than for natural gas boilers in the totality of the investigated working domain.…”

Section: Discussionsupporting

confidence: 91%

“…However, this parameter does not account for the concept of energy quality, not considering how energy sources were utilized if compared to their maximum potential. Moreover, the definition of the average conversion efficiency is of primary importance for retrieving reliable results, as proven by the work of Bless et al [26]. This is not trivial, as this factor embeds many uncertainties related to the definition of relevant system boundaries.…”

Section: Discussionmentioning

confidence: 99%

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Thermodynamic competitiveness of high temperature vapor compression heat pumps for boiler substitution

Bergamini

Jensen

Elmegaard

2019

Energy

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Replacement of fossil fuel-fired boilers for generation of high-temperature water and steam is of paramount importance for reaching a fossil-free economy. Heat pumps could be possible substitutes, but the presently marketed solutions are mainly limited to low-temperature applications. This paper compares the thermodynamic performance of various High-Temperature Heat Pumps (HTHP) based on the vapor compression cycle with natural gas boilers for assessing their technical feasibility and competitiveness as future replacements. Different cycle configurations and natural refrigerants were compared based on the coefficient of system performance and exergetic efficiency. Moreover, the technical feasibility of the most interesting cycles was discussed based on current technologies. The results showed that HTHP are promising substitutes for gas boilers for heat production of temperatures up to 180°C. In particular, ammonia cycles were preferable for source and sink temperatures lower than 60°C and 110°C, respectively, while water was a better-working fluid at higher temperatures. The complete exergy analysis showed different behaviors for various natural refrigerants in the working domain but confirmed the results identified by the energy analysis. In any case, the technological analysis showed that further improvement of compressor technologies is required for making these solutions competitive.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Thermodynamic competitiveness of high temperature vapor compression heat pumps for boiler substitution

Bergamini

Jensen

Elmegaard

2019

Energy

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“…dealing with the basic potential to keep running on the waste heat from CHP structures. The heating recovering can be redesigned for most incredible adequacy along these lines while extending the power yield from the CHP plant [69].…”

Section: Methods and Methodologies For Collection Of Solar Energymentioning

confidence: 99%

A comprehensive review to study and implement solar energy in dairy industries

Solanki¹,

Pal²

2021

Journal of Thermal Engineering

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In this review, analysis of triple-impact vapour ingestion refrigeration framework involving a high, medium and low-temperature generator is characterized. This review suggests the solar power-related triple impact vapour retention refrigeration for heating and cooling applications in dairy industries that should be developed. In this review, the paper investigates solar heat and cooling is practised in modern dairy applications. With improved advancements and scaled-down costs, the solar-powered energy guarantees to reduce power charges builds countries' energy security through reliance on a special, unfathomable resource, redesigned practicality, limited defilement, cut down the costs of diminishing an unsafe barometrical deviation, and keeps oil subordinate costs lower than something different. The important source of heating is considered from solar-based by using different solar oriented heat advancements. The results indicate that solar power-related triple impact vapour retention refrigeration for heating and cooling applications in dairy industries. Different operating temperatures are measured during the implementation and find an optimal food processing condition in the dairy industry. Thus, this observed study gives hands to develop an efficient renewable system for processing industrial dairy operation using solar power. Implementing renewable energy sources in the dairy industries promotes overall energy consumption and lower the total expenditure of industrial processing, respectively.

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“…Note that providing the amount of steam needed with heat pumps at such an efficiency poses a technical challenge by itself. COPs for steam generating heat pumps for near‐ambient temperature at the cold side are usually smaller than two 88,89 . COPs close to three are achieved when upgrading heat from a temperature level of 60°C or greater rather than ambient conditions 90 .…”

Section: Wind Energy Direct Air Capture and Photovoltaic Direct Air C...mentioning

confidence: 99%

Assessing the physical potential capacity of direct air capture with integrated supply of low‐carbon energy sources

et al. 2021

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Direct Air Capture (DAC) is a negative emission technology that can remove up to 10–20 Gt of CO2 per year. However, to achieve this potential, DAC systems must be coupled to suitable locally available energy sources and sited near geological storage. This study explores the potential of low‐carbon energy sources to supply power and heat to the DAC process in a dedicated, self‐sufficient system tailored for each energy source. Solar, geothermal, woody biomass, wind, and nuclear energy sources are assessed for their global energy supply potential and possible land use requirements. While the options differ in area requirement and regional efficacy, we estimate that all the regionally specific technologies considered can supply energy to achieve significant removal of carbon dioxide from the atmosphere globally. The amount of energy physically available from solar, offshore wind, and woody biomass converts to a removal potential of 160–971, 45–150, and 2–5 Gt CO2/year, respectively. Thus, negative emission targets can be reached by utilizing a moderate fraction of the overall potential of several different low‐carbon energy sources for DAC while the magnitude of the potential changes significantly according to the source of energy. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Theoretical analysis of steam generation methods - Energy, CO 2 emission, and cost analysis

Cited by 34 publications

References 13 publications

Thermodynamic competitiveness of high temperature vapor compression heat pumps for boiler substitution

Thermodynamic competitiveness of high temperature vapor compression heat pumps for boiler substitution

A comprehensive review to study and implement solar energy in dairy industries

Assessing the physical potential capacity of direct air capture with integrated supply of low‐carbon energy sources

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