Comparison of pumped hydro, hydrogen storage and compressed air energy storage for integrating high shares of renewable energies—Potential, cost-comparison and ranking

Klumpp, Florian

doi:10.1016/j.est.2016.09.012

Cited by 82 publications

(42 citation statements)

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“…In terms of hydrogen storage, although pressurized compression hydrogen storage technology, liquefied hydrogen storage technology, metal hydride hydrogen storage technology and organic compound hydrogen storage technology have all made great progress, the balance between hydrogen storage density, hydrogen storage safety and hydrogen storage cost has not been resolved, and there is still a certain gap from large-scale commercial application [5]. From the perspective of hydrogen use, the insufficient scale of hydrogen fuel cell vehicles leads to the high construction cost of hydrogen filling stations and difficulty in large-scale laying.…”

Section: Large-scale Commercial Applicationmentioning

confidence: 99%

Challenges and Policy Suggestions on the Development of Hydrogen Economy in China

Shan

Wang

2020

E3S Web Conf.

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In recent years, with the intensification of environmental damage, mankind is at a crossroads towards the next energy revolution. Hydrogen energy, because of its pollution-free nature, has become the focus of technological research and development in many countries, and the economic pattern around it is taking shape China’s investment in the field of new energy has been increasing in recent years, and the prospect of hydrogen economy has prompted China to continuously increase the development of hydrogen energy. However, it faces many obstacles, both technical and social. The Chinese government is now using financial subsidies to help hydrogen companies incubate. However, with the development of the industry, China is currently facing great obstacles in large-scale commercial application, intellectual property protection and innovation, standardization construction and social confidence. This paper believes that policy measures such as selective commercial distribution, innovation system building, industry standardization construction and social education can be adopted to help solve these challenges

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Section: Large-scale Commercial Applicationmentioning

confidence: 99%

Challenges and Policy Suggestions on the Development of Hydrogen Economy in China

Shan

Wang

2020

E3S Web Conf.

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“…Among EES technologies, compressed air energy storage CAES is considered a very promising technology. At a large scale, it is a strong alternative to the pumped hydroelectric when nearby mountains are not available [1,5]. In addition, at smaller scales, CAES attracted recently more attention due to their possible benefits [6][7][8][9][10] and their potential applications especially for off-grid sites as demonstrated by the studies of Jannelli et al [9] and Zafirakis et al [11].…”

Section: Introductionmentioning

confidence: 99%

Micro-scale trigenerative compressed air energy storage system: Modeling and parametric optimization study

Cheayb

Mylène²,

Poncet

et al. 2019

Journal of Energy Storage

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In this paper, a trigenerative compressed air energy storage system is considered giving priority to the electric energy production with the objective to apply it at a micro-scale, typically a few kW. A whole detailed thermodynamic model of the system is developed including the existing technological aspects and the relations between components. The study then focuses on investigating the mutual effects of the design parameters and their influences on the system performances, energy density and heat exchanger footprints via a parametric study. From this analysis, it is found that the temperature of the thermal energy storage, the number of compression stages and the effectiveness of heat exchangers should be selected as a trade-off between the system efficiencies, heat exchangers footprints and the required number of expansion stages. Meanwhile, the selection of the maximum storage pressure is a choice whether to increase the energy density or the system efficiencies. An optimal design guideline of the above key parameters is then provided. This guideline, the method and the procedure presented in this paper can be applied to the optimization of the trigenerative compressed air energy storage and could be extended for the adiabatic one with minor changes. Based on existing technologies and using an optimal set of parameters, the round trip electrical efficiency of our system remains low at 17%, while the comprehensive efficiency reaches 27.2%. The poor performances are mainly linked to the exergy losses in the throttling valve and the low values of the component efficiencies at a micro-scale. The most optimization potentials are also addressed. Abbreviations CAES compressed air energy storage A-CAES adiabatic CAES T-CAES trigenerative CAES TES thermal energy storage AM compressed air motor HEX heat exchanger Pinch pinch point temperature difference η efficiency COP coefficient of performance η g comprehensive efficiency Recently, this technology regained attention with a major improvement, namely the use of the heat from the compression process in the expansion phase. This second generation recognized as adiabatic compressed air energy storage (A-CAES) could be competitive with others EES as found by the techno-economic study of Abdon et al. [15], thanks

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“…Several works are available in the scientific literature but all of them underline the need of developing safer and efficient hydrogen storage system with acceptable volumetric energy densities. For this reason, hydrogen storage could become economically feasible around 2030 [20] but it is expected that this technology has an energy density in the range 2.7-160 kWh/m 3 and a price per stored energy unit of 2-15 €/kWh [7].…”

Section: In-developing Large-scale Estsmentioning

confidence: 99%

State-of-the-art and future development of sensible heat thermal electricity storage systems

Benato¹,

Stoppato²,

Mirandola³

2017

IJHT

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Wind and solar energy have a variable and intermittent nature, a characteristic which forces fossil fuel thermal power plants to be used as backup units for grid stabilization. The development and installation of large-scale cost-effective energy storage systems is necessary to adapt electricity generated by renewables to the users' demand. But, the installation of conventional energy storage can add new capacity and further reduce the thermal power plants operational utilization factor. For these reasons, Integrated Energy Storage Systems need to be developed and installed. Pumped Thermal Electricity Storage (PTES) is an emerging technology which can offer a significant contribution to future large-scale electric storage applications. It is based on a high temperature heat pump cycle, which transforms electrical energy into thermal energy and stores it inside two thermal reservoirs, matched with a thermal engine cycle, which converts the stored thermal energy back into electrical energy. The thermal energy is stored as sensible heat in man-made reservoirs, one hot and one cold. In the present work, a detailed analysis of the available PTES configurations is presented underlining advantages, drawbacks and future development. Then, an innovative integrated energy storage unit is presented and compared with the existing ones.

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Comparison of pumped hydro, hydrogen storage and compressed air energy storage for integrating high shares of renewable energies—Potential, cost-comparison and ranking

Cited by 82 publications

References 0 publications

Challenges and Policy Suggestions on the Development of Hydrogen Economy in China

Challenges and Policy Suggestions on the Development of Hydrogen Economy in China

Micro-scale trigenerative compressed air energy storage system: Modeling and parametric optimization study

State-of-the-art and future development of sensible heat thermal electricity storage systems

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