Podcast
Questions and Answers
What is one of the primary purposes of Thermal Energy Storage (TES) systems?
What is one of the primary purposes of Thermal Energy Storage (TES) systems?
Which of the following describes a function of energy and exergy analysis in TES systems?
Which of the following describes a function of energy and exergy analysis in TES systems?
What is a significant impact of ambient temperature on TES systems?
What is a significant impact of ambient temperature on TES systems?
What is the main benefit of reducing demand charges through TES systems?
What is the main benefit of reducing demand charges through TES systems?
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How does energy and exergy efficiency relate to TES systems?
How does energy and exergy efficiency relate to TES systems?
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What is the main purpose of the insulated ice storage tank in the ice-slurry system?
What is the main purpose of the insulated ice storage tank in the ice-slurry system?
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How does the temperature of the stored ice slurry affect the cooling load?
How does the temperature of the stored ice slurry affect the cooling load?
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What does the exergy efficiency of the overall system indicate?
What does the exergy efficiency of the overall system indicate?
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What role does the load control pump and valve play in the ice-slurry system?
What role does the load control pump and valve play in the ice-slurry system?
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How does ambient temperature influence the energy efficiency of the storage tank?
How does ambient temperature influence the energy efficiency of the storage tank?
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Which factor primarily affects the variation of storage temperature over time?
Which factor primarily affects the variation of storage temperature over time?
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What does the freeze-depressant solution facilitate in the ice orbital rod evaporator?
What does the freeze-depressant solution facilitate in the ice orbital rod evaporator?
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What type of storage is characterized by the storage of summer heat for winter use?
What type of storage is characterized by the storage of summer heat for winter use?
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Which of the following is a characteristic of sensible heat storage (SHS)?
Which of the following is a characteristic of sensible heat storage (SHS)?
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In the context of energy savings, what percentage of savings is achieved in heating with the BTES system?
In the context of energy savings, what percentage of savings is achieved in heating with the BTES system?
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Which of the following materials are typically used for latent heat storage?
Which of the following materials are typically used for latent heat storage?
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What is one major drawback of utilizing geothermal heat pumps in a thermal energy storage system?
What is one major drawback of utilizing geothermal heat pumps in a thermal energy storage system?
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Which of the following options is NOT a selection criterion for thermal energy storage?
Which of the following options is NOT a selection criterion for thermal energy storage?
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What is a common application of thermal energy storage systems?
What is a common application of thermal energy storage systems?
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What is the payback period for high-efficiency HVAC equipment in the BTES system?
What is the payback period for high-efficiency HVAC equipment in the BTES system?
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Which temperature is typically used for low-temperature hydronic heating in the BTES system?
Which temperature is typically used for low-temperature hydronic heating in the BTES system?
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What factor does NOT significantly influence the design criteria for thermal energy storage systems?
What factor does NOT significantly influence the design criteria for thermal energy storage systems?
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Study Notes
Energy Storage Systems
- OntarioTech University
- Faculty of Engineering and Applied Science
- MECE3260U - Introduction to Energy Systems
- The course covers Energy Storage Techniques, Thermal Energy Storage (TES) Methods, TES Applications, Technical Aspects of Cold TES Systems, Case Studies and Closing Remarks.
- Distributed energy storage is crucial for connecting renewable energy resources (solar, wind) with centralized power and heat generation, and the electrification of transport.
Outline
- Introduction
- Energy Storage Techniques
- Pumped storage
- Electro-chemical batteries
- Flywheels
- Compressed air
- Biological storage
- Magnetic storage
- Chemical storage
- Thermal storage
- Thermal Energy Storage (TES) Methods
- Two-tank molten salts
- Packed-bed, thermocline
- Solid-state storage (concrete, graphite, sand/rock, metal block)
- TES Applications
- Technical Aspects of Cold TES Systems
- Case Studies
- Closing Remarks
Why Energy Storage
- An advanced energy technology
- A potential solution for reducing environmental impact
- An efficient and effective energy saving method
- An important mechanism to offset the mismatch between energy availability and demand
- A large potential for cost-effective energy substitutions.
- Applicable across various energy sectors
Energy Storage Methods
- Chemical storage
- Hydrogen storage
- Synthetic natural gas
- Electrical storage
- Capacitors
- Super-capacitors
- Super conducting magnetic energy storage (SCMES)
- Electrochemical storage
- Electrochemical capacitors
- Batteries
- Fuel cells
- Mechanical storage
- Pumped hydro
- Compressed air
- Flywheels
- Thermal storage
- Thermo-chemical
- Sensible thermal
- Latent thermal
System Power Ratings, Module Size
- UPS (Power Quality)
- T&D (Grid Support, Load Shifting)
- Bulk Power Mgt (Pumped hydro, CAES)
- Various technologies and their power rating ranges (from kW to GW)
Global Battery Energy Storage
- Rapid growth driven by increasing renewable energy sources
- South Korea has the highest installed battery capacity globally.
- Lithium-ion batteries are the dominant current market
- Significant market growth projected.
Global Energy Storage Deployments
- CAGR (compound annual growth rate) trending upwards for the deployment of global energy storage solutions.
Energy Storage Techniques
- Pumped hydro
- Electro-chemical batteries
- Flywheels
- Compressed air
- Biological storage
- Magnetic storage
- Chemical storage
- Thermal storage
Energy Storage Pricing
- Global average lithium-ion battery prices have significantly decreased.
- Factors influencing pricing and cost-effectiveness of different storage technologies.
- Prices are constantly changing depending on factors like production and availability of materials, technology development, and demand.
Countries with Most Battery Capacity
- China has the largest installed capacity.
- The U.S. is rapidly increasing its capacity.
- Other nations are gradually developing their battery storage capacities.
Storage Value Estimation Tool (StorageVET®)
- A publicly available and open-source tool for evaluating energy storage technologies
- Enables optimization of energy resources for better installations and sizing.
- Aids in project planning and identifying storage value trends
Compressed Air Energy Storage System (CAES)
- Uses compressed air stored underground in caverns
- Cycles of compression and expansion generate electricity.
Pumped Hydro Storage System
- Pump water uphill during off-peak hours
- Release water downhill generating electricity during peak hours
Thermal Energy Storage (TES)
- Technologies for storing thermal energy
- Sensible heat storage (increasing temperature without phase change) using media like water tanks, rock bins, etc.
- Latent heat storage (phase change materials-PCM) via materials like salt hydrates and organic compounds.
- Different storage methods for different purposes
- Various materials used in thermal storage applications.
TES Periods
- Short-term: Storing energy for diurnal cycles (e.g., solar for overnight heating)
- Long-term: Energy storage for seasonal cycles (e.g., summer heat for winter)
TES Methods
- Sensible heat storage (SHS)
- Latent heat storage (LHS)
Borehole Thermal Storage System (BTES)
- A thermal storage system using boreholes in the ground for heating and cooling.
Selection Criteria for TES
- Storage duration
- Technical availability
- Integrability with other thermal systems
- Reliability
- Applicability
- Commercial viability
- Cost
- Efficiency
- Environmental impact
- Operating strategy
- Operating conditions
Operating Strategies for TES
- Full-storage
- Partial-storage load leveling
- Partial-storage demand limiting
Major Cold TES Cooling System Types
- Conventional
- Ice-making
- Encapsulated Ice
Exergy and Energy Efficiencies
- Measurements for evaluating the performance of TES systems.
Case Studies
- Various case studies focusing on the energy and exergy analysis of various TES systems. Illustrating energy savings and efficiency analysis
Closing Remarks
- Importance of TES
- Energy conservation aspects
- Critical analysis for renewable energy systems
Savings by TES Systems
- Utilization of waste or surplus (e.g., solar) energy
- Reduction in demand charges
- Deferment of capital investment.
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Description
Dive into the fascinating world of energy storage systems with this quiz based on the Introduction to Energy Systems course at OntarioTech University. Explore various techniques, methods, applications, and the technical aspects of thermal energy storage systems. Test your knowledge on how these systems integrate renewable energy resources and contribute to the electrification of transport.
