scholarly journals Using thermal energy storage to replace natural gas in commercial/industrial applications

2018 ◽  
Author(s):  
Rhys Jacob ◽  
Martin Belusko ◽  
Ming Liu ◽  
Wasim Saman ◽  
Frank Bruno
Keyword(s):  
Energy Storage ◽  
Natural Gas ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Industrial Applications

Optimized Energy Recovery in Line With Balancing of an ATES

2014 ◽  
Author(s):  
Mohammadreza Behi ◽  
Seyed Aliakbar Mirmohammadi ◽  
Alexander B. Suma ◽  
Björn E. Palm
Keyword(s):  
Energy Storage ◽  
Natural Gas ◽  
Cost Saving ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Cost ◽  
Energy Recovery ◽  
International Energy Agency ◽  
Imbalance Problem ◽  
Aquifer Thermal Energy Storage

The present study explores the potential imbalance problem of the Aquifer Thermal Energy Storage (ATES) system at the Eindhoven University of Technology (TU/e) campus, Eindhoven. This ATES is one of the largest European aquifer thermal energy storage systems, and has a seasonal imbalance problem. Reasons for this issue may be the high cooling demand from laboratories, office buildings and the direct ATES cooling system. Annually, cooling towers use on average 250 MWh electricity for the removal of about 5 GWh of excess heat from the ATES to the surroundings. In addition, the TU/e uses a large amount of natural gas for heating purposes and especially for peak supplies. Recovering the surplus heat of the ATES, a CO2 Trans-critical Heat Pump (HP) system to cover particularly peak demands and total heating demand is proposed, modeled and optimized. The model is validated using data from International Energy Agency. Based on simulation results, 708294 nm3 of natural gas are saved where two different scenarios were considered for the ATES efficiency, cost saving and green house gas reduction. In scenario I, the COP of the ATES increased up to 50% by which K€ 303.3 energy cost and 1288.5 ton CO2 are saved annually. On the other hand, it will be shown that the ATES COP in Scenario II will improve up to 20%. In addition, the proposed energy recovery system results in a 606 ton CO2 -reduction and K€152.7 energy cost saving for the university each year.

Development of a Vacuum Insulated Thermal Energy Storage for Industrial Applications

2019 ◽  
Author(s):  
Sara Eicher ◽  
Martin Guillaume ◽  
Xavier Jobard ◽  
Jacques Bony ◽  
Stéphane Citherlet ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Industrial Applications

Cost Optimal Strategies of High Temperature Thermal Energy Storage Systems in Combined Heat and Power Applications

2016 ◽  
Author(s):  
Parker Wells ◽  
Karthik Nithyanandam ◽  
Richard Wirz
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Los Angeles ◽  
Natural Gas ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Power Plants ◽  
Combined Heat And Power ◽  
Time Of Day ◽  
Recycled Paper

As variable generation electricity sources, namely wind and solar, increase market penetration, the variability in the value of electricity by time of day has increased dramatically. In response to increase in electricity demand, natural gas “peaker plants” are being added to the grid, and the need for spinning and nonspinning reserves have increased. Many natural gas, and other heat source based, power plants exist as combined heat and power (CHP), or cogeneration, plants. When built for industrial use, these plants are sized and run based on heat needs of an industrial facility, and are not optimized for the value of electricity generated. With the inclusion of new, less expensive thermal energy storage (TES) systems, the heating and electricity usage can be separated and the system can be optimized separately. The use of thermal energy storage with CHP improves system economics by improving efficiency, reducing upfront capital expenditures, and reducing system wear. This paper examines the addition of thermal energy storage to industrial natural gas combined heat and power (CHP) plants. Here a case study is presented for a recycled paper mill near Los Angeles, CA. By implementing thermal energy storage, the mill could decouple electric and heat production. The mill could take advantage of time-of-day pricing while producing the constant heat required for paper processing. This paper focuses on plant economics in 2012 and 2015, and suggests that topping cycle industrial CHP plants could benefit from the addition of high temperature (400–550°C) energy storage. Even without accounting for the California incentives associated with implementing advanced energy storage technologies and distributed generation, the addition of energy storage to CHP plants can drastically reduce the payback period below the 25 year expected economic lifetime of a plant. Thus thermal energy storage can make more CHP plants economically viable to build.

scholarly journals Cyclic mechanical stability of thermal energy storage media

2020 ◽  
Vol 205 ◽  
pp. 07008
Author(s):  
Henok Hailemariam ◽  
Frank Wuttke
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Heat Storage ◽  
Mechanical Performance ◽  
Mechanical Stability ◽  
Storage Systems ◽  
Supply And Demand ◽  
Storage System ◽  
Industrial Applications

Closing the gap between supply and demand of energy is one of the biggest challenges of our era. In this aspect, thermal energy storage via borehole thermal energy storage (BTES) and sensible heat storage systems has recently emerged as a practical and encouraging alternative in satisfying the energy requirements of household and industrial applications. The majority of these heat energy storage systems are designed as part of the foundation or sub-structure of buildings with load bearing capabilities, hence their mechanical stability should be carefully studied prior to the design and operation phases of the heat storage system. In this study, the cyclic mechanical performance of a commercial cement-based porous heat storage material is analyzed under different amplitudes of cyclic loading and medium temperatures using a recently developed cyclic thermo-mechanical triaxial device. The results show a significant dependence of the cyclic mechanical behavior of the material, such as in the form of cyclic axial and accumulated plastic strains, on the different thermo-mechanical loading schemes.

Energy demand of liquefaction and regasification of natural gas and the potential of LNG for operative thermal energy storage

2019 ◽  
Vol 99 ◽  
pp. 1-15 ◽  
Author(s):  
Jiří Pospíšil ◽  
Pavel Charvát ◽  
Olga Arsenyeva ◽  
Lubomír Klimeš ◽  
Michal Špiláček ◽  
...  
Keyword(s):  
Energy Storage ◽  
Natural Gas ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Demand

scholarly journals Environmental Assessment of Latent Heat Thermal Energy Storage Technology System with Phase Change Material for Domestic Heating Applications

2021 ◽  
Vol 13 (20) ◽  
pp. 11265
Author(s):  
Daniel Chocontá Bernal ◽  
Edmundo Muñoz ◽  
Giovanni Manente ◽  
Adriano Sciacovelli ◽  
Hossein Ameli ◽  
...  
Keyword(s):  
Energy Storage ◽  
Natural Gas ◽  
Phase Change ◽  
Latent Heat ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Environmental Sustainability ◽  
Phase Change Materials ◽  
Raw Materials ◽  
Technology System

The emissions generated by the space and water heating of UK homes need to be reduced to meet the goal of becoming carbon neutral by 2050. The combination of solar (S) collectors with latent heat thermal energy storage (LHTES) technologies with phase change materials (PCM) can potentially help to achieve this goal. However, there is limited understanding of the environmental sustainability of LHTES technologies from a full life cycle perspective. This study assesses for the first time 18 environmental impacts of a full S-LHTES-PCM system from a cradle to grave perspective and compares the results with the most common sources of heat in UK homes. The results show that the system’s main environmental hotspots are the solar collector, the PCM, the PCM tank, and the heat exchanger. The main cause of most of the impacts is the extensive consumption of electricity and heat during the production of raw materials for these components. The comparison with other sources of household heat (biomass, heat pump, and natural gas) indicates that the S-LHTES-PCM system generates the highest environmental impact in 11 of 18 categories. However, a sensitivity analysis based on the lifetime of the S-LHTES-PCM systems shows that, when the lifetime increases to 40 years, almost all the impacts are significantly reduced. In fact, a 40-year S-LHTES-PCM system has a lower global warming potential than natural gas.

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