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Utility-scale osmotic grid storage

A power and battery technology, applied in the field of practical-scale power grid storage, can solve the problem of no large-scale power storage options

Inactive Publication Date: 2011-12-07
OASYS WATER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To date, there are no economical large-scale electricity storage options in the energy industry

Method used

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  • Utility-scale osmotic grid storage
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  • Utility-scale osmotic grid storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Simulate various storage technologies, including the disclosed infiltration system and method, based on comparative dimensions and operating parameters, and evaluate in terms of efficiency and capital cost. Table 1 below summarizes the results regarding efficiency.

[0068] Table 1

[0069] Storage technology

effectiveness

Pumped storage

70-85％

Flow battery

75-85％

Na-S battery

85-90％

Li-ion battery

90-95％

Compressed air

70-80％

Energy storage wheel

90-95％

Infiltration system

75-85％

[0070] As shown in the table, the efficiency of the disclosed infiltration system and method is competitive, especially in view of the fact that waste heat can be used.

[0071] The evaluation results also show that the infiltration system and method disclosed herein have a lower capital cost per kilowatt than conventional storage technologies. For example, pumped storage systems are 2 to 4 times more expensive. Flow batteries are up to 3 times more expensive. Sodium-...

Embodiment 2

[0074] A cost analysis is performed on the penetration grid storage system simulated according to one or more embodiments disclosed herein. The system specifications on which the simulation is based include a total energy storage capacity of 600MWH, a transmission power of 100MW, a transmission time of 12 hours, a pressure of 150ATM, and a 1GW thermal power plant used to provide waste heat. The analysis yielded an estimated cost of $0.08 per kWh, indicating the feasibility of penetrating grid storage as an energy solution.

Embodiment 3

[0076] An analysis was performed to simulate the cost per kilowatt hour as a function of the storage capacity of the penetration grid storage system according to various embodiments. The results are shown in Table 2 below, indicating that the cost per kilowatt-hour decreases with increasing MWH storage capacity. Storage has tripled and costs have been reduced by more than half. Compared to conventional grid storage options, the estimated $0.098 / KWH under 30MWH storage capacity is attractive.

[0077] Table 2

[0078]

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PUM

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Abstract

Systems and methods for the storage of potential energy that may be readily converted to electrical power delivered to a customer or grid distribution are disclosed. This method may involve the use of salinity gradients, or as they may be also described, osmotic pressure gradients or differences between two solutions, to produce hydraulic pressure in a concentrated solution, allowing for the generation of power.

Description

Technical field [0001] One or more aspects of the invention relate generally to osmotic separation. More specifically, one or more aspects of the present invention relate to the use of hydropower generated through a designed infiltration process such as forward osmosis for utility scale grid storage. Background technique [0002] Existing grid storage options, such as flow batteries, lithium-ion batteries, energy storage wheels, compressed air, capacitors, hydrogen storage, and hydroelectric energy storage, all have significant shortcomings, preventing them from becoming viable solutions to grid storage problems. In addition, the vast majority of power generation is thermal in nature, so that electricity must be generated immediately because there is no effective way to store heat for a long time without loss. Grid storage is the key to solving the inherent inefficiency of the power grid and maximizing the output from fossil resource consumption. To date, there are no economica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G7/00
CPCC02F1/16Y10S203/18Y02E10/36Y02E10/50F03G7/005C02F1/048Y10S203/21C02F1/14C02F1/445Y10S203/01B01D61/002B01D61/005Y02E10/40Y02E10/70Y02E10/38B01D61/10Y02E10/00B01D61/025C02F1/04Y02E10/30B01D61/0021Y02E10/20F03G7/015
Inventor 罗伯特·姆金尼斯阿伦·曼德尔
Owner OASYS WATER
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