Epoxycyclopentane hydrate for sustainable hydrate-based energy storage: notable improvements in thermodynamic condition and storage capacity

The increase of solar energy production has become a solution to meet the demand of electricity and reduce the greenhouse effect worldwide. This paper aims to determine the performance and viability of direct normal irradiation of three solar tower power plants in Algeria, to be installed in the highlands and the Sahara (Béchar, El Oued, and Djelfa regions). The performance of the plants was obtained through a system advisor model simulator. It used real data gathered from appropriate meteorological files. A relationship between the solar multiple (SM), power generation, and thermal energy storage (TES) hours was observed. The results showed that the optimal heliostat field corresponds to 1.8 SM and 2 TES hours in Béchar, 1.2 SM and 2 TES hours for El Oued, and 1.5 SM and 4 TES hours for Djelfa. This study shows that there is an interesting relationship between the solar multiple, power generation, and storage capacity.

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Energy Transport and Storage using Methanol as a Carrier

Green ◽

10.1515/green-2013-0028 ◽

2014 ◽

Vol 4 (1-6) ◽

Cited By ~ 4

Author(s):

Karsten Müller ◽

Florian Fabisch ◽

Wolfgang Arlt

Keyword(s):

Energy Storage ◽

Energy Balance ◽

Energy Transport ◽

Storage Capacity ◽

Net Energy ◽

High Storage Capacity ◽

Overall Efficiency ◽

And Storage ◽

Methanol Economy ◽

High Storage

AbstractMethanol has been proposed frequently as an energy carrier in recent years. High storage capacity, easy manageability and similarity to existing fuels make it an interesting option for energy storage. However, the usage of methanol is constrained by its low boiling point and its toxicity and the energy balance of a methanol economy is disputable. Net energy ration and renewability factor for different scenarios of a methanol economy have been analyzed, considering hydrogen production, methanol synthesis and transport and repowering. It appears that the overall efficiency of methanol based energy storage is rather low, but still can be sustainable due to a high renewability factors.

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Performance Analysis and Detailed Experimental Results of the First Liquid Air Energy Storage Plant in the World

Journal of Energy Resources Technology ◽

10.1115/1.4038378 ◽

2017 ◽

Vol 140 (2) ◽

Cited By ~ 4

Author(s):

A. Sciacovelli ◽

D. Smith ◽

M. E. Navarro ◽

A. Vecchi ◽

X. Peng ◽

...

Keyword(s):

Energy Storage ◽

Storage Capacity ◽

Storage Systems ◽

Operational Parameters ◽

Electricity Storage ◽

Experimental Campaign ◽

The World ◽

Power Storage ◽

The University ◽

And Storage

Liquid air energy storage (LAES) is a technology for bulk electricity storage in the form of liquid air with power output potentially above 10 MW and storage capacity of 100 s MWh. In this paper, we address the performance of LAES and the experimental evidences gathered through the first LAES pilot plant in the world developed by Highview power storage at Slough (London) and currently installed at the University of Birmingham (UK). We developed a numerical model of LAES plant and carried out an experimental campaign to gather new results which show the LAES operating principles, the reliability of the technology, the startup/shut down performance, and the influence of operational parameters. In summary, this work (a) contributes to the advancement of thermomechanical storage systems, (b) provides new experimental evidences and results for LAES technology, and (c) highlights the crucial aspects to necessarily improve the performance of LAES.

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Simulations on Design and System Performance of Building Heating Boosted by Thermal Energy Storage (TES) with Magnesium Hydro Carbonates/Silica Gel

Energies ◽

10.3390/en13174520 ◽

2020 ◽

Vol 13 (17) ◽

pp. 4520

Author(s):

Rickard Erlund ◽

Ron Zevenhoven

Keyword(s):

Energy Storage ◽

Heat Pump ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Electrical Resistance ◽

Storage Capacity ◽

Heating System ◽

Heat Output ◽

In Series ◽

And Storage

In this paper, a simulations model of a seasonal thermal energy storage (TES) reactor integrated into a house heating system is presented. The water vapour chemisorbing reactor contains a composite material composed of silica gel and hydrated magnesium carbonate (nesquehonite, MgCO3·3H2O) that can be produced by a carbon capture and storage by mineralisation process. The performance of the TES to supply winter heat instead of electrical resistance heat is analysed. Dividing the reactor into a few units (connected in series) for better heat output and storage capacity as developed by the authors is compared to one unit or parallel unit solutions. The heating system components are an exhaust air heat pump, solar collectors and a heat recovery ventilation unit (HRV). The TES is used as heat source during colder periods, which implies improved efficiency and coefficient of performance (COP). Around 70% of electrical resistance heat, assisting an exhaust air heat pump during cold periods, can be substituted with heat from the TES according to the simulation model. Connecting three units in series will increase the usable storage capacity possibilities with by a 49% higher heat output.

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How Solar and Storage Can Reduce Coincident Peak Loads and Payments: A Case Study in Austin, TX

Volume 6B: Energy ◽

10.1115/imece2018-86482 ◽

2018 ◽

Author(s):

Arkasama Bandyopadhyay ◽

Joshua D. Rhodes ◽

Julia P. Conger ◽

Michael E. Webber

Keyword(s):

Storage Capacity ◽

Economic Value ◽

Energy Market ◽

Population Estimates ◽

The Novel ◽

Peak Loads ◽

Novel Approach ◽

And Storage ◽

Local Generation

This study builds a generalized tool to forecast the change of 4 coincident peak (4CP) loads and payments based on varying amounts of solar, storage capacity, and population estimates over a 10-year period for utilities within the Electric Reliability Council of Texas (ERCOT). It also incorporates an optimization model for the energy storage systems (ESSs) that maximizes the sum of the revenue earned from their operation as well as the net 4CP payments received by the utility by attempting to arbitrage the ERCOT energy market. The tool is illustrated by using empirical data from the municipally-owned utility in Austin, TX (Austin Energy). 4CP payments can be on the order of tens of millions of dollars. Results indicate that solar and storage capacity can substantially lower these payments. For example, a 20 MW increase in solar capacity in 2018 would reduce Austin Energy’s payment by an estimated $200,000 for each subsequent year. By using the novel approach of incorporating coincident peak demand charge reductions at the DSP level, this study highlights the economic value of local generation and storage.

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