Compressors form integral part of world’s first liquid air energy storage plant

  Enquiry / contact me

Extracting ambient air from the surrounding environment

Hydraulics & Pneumatics

Compressors form integral part of world’s first liquid air energy storage plant
Compressors form integral part of world’s first liquid air energy storage plant
Compressors form integral part of world’s first liquid air energy storage plant
Compressors form integral part of world’s first liquid air energy storage plant
Compressors form integral part of world’s first liquid air energy storage plant
Compressors form integral part of world’s first liquid air energy storage plant

Energy-efficient Atlas Copco compressors are a vital part of an innovative cryogenic process developed by Highview Power Storage to store off-peak electric energy by liquefying air. Using cheap off-peak electricity, the Highview CryoEnergy System pilot plant operates by extracting ambient air from the surrounding environment: the gas is cleaned, compressed by Atlas Copco compressors, and then cooled until the air undergoes a phase change to a liquid. The liquefied air is stored in an insulated tank at a temperature of −196° C.

When power is required, liquid air is drawn from the tank and pumped to high pressure. Ambient, or above ambient, waste heat is applied to the liquid air via heat exchangers, resulting in a phase change from liquid air to a high pressure gas which is then used to drive a turbine and power generator.

The liquefaction stage is accomplished by integrating Atlas Copco compressors within Highview's 300kW/2.5MWh CryoEnergy System. A fully-integrated, oil-free ZR 700 VSD water-cooled screw compressor, with specially modified inlet pipework, operates within the recirculation system while the main air feed for the liquefaction plant is supplied by a ZR 250 VSD rotary screw compressor. The Atlas Copco installation is completed with a low-pressure ZS45+ VSD blower.

Gareth Brett, CEO, Highview Power Storage says: "With the drive for a low carbon economy, there is increasing emphasis on wind and solar sources. However, by their nature, these forms of generation are intermittent and thus there is a need for a viable energy storage method to act as a buffer to store electricity when it is being produced but perhaps not needed, and release it to the grid at peak times."

Rob Morgan CTO, Highview Power Storage says: "The screw compressors supplied by Atlas Copco offered the best compromise in price, performance and delivery. Atlas Copco also provided us with excellent support during the selection of the machines and clearly valued the potential of Highview beyond the value of an initial equipment sale. We look forward to working with Atlas Copco in the future as we take our technology to market."

Storing electricity reliably, safely and cheaply has been the 'Holy Grail' of the energy market as it provides the opportunity to firm up intermittent generation methods such as wind or solar, and supports traditional generation methods at peak times. Highview's CryoEnergy System pilot plant, hosted by SSE (Scottish and Southern Energy), Slough Heat and Power plant, UK, uses commercially available components that have proven performances and life times. Utility-scale energy storage has become big business with an estimated $600billion (£365billion) market forecasted over the next 10 years.

Highview plans to scale up the system to a 10MW/40MWhs commercial demonstrator: "As we scale up the technology, we will certainly be discussing with Atlas Copco how their own advanced compressor technology can support our projects in the future.," says Morgan.

Posted on October 14, 2011 - (147 views)
by
Atlas Copco Compressors Ltd
Swallowdale Lane
HP2 7HA Hemel Hempstead - United Kingdom
+44-1442-261201
+44-1442-234791
View full company profile
Location
Related articles
Switch to Mobil lubricant extends hydraulic oil drain intervals by 25% for Russian limestone quarry
ExxonMobil helps plastics packaging manufacturer achieve 7% energy saving
Injecting production into plastic process with high performance lubricants
Optimising cement plant productivity with high performance lubricants
How to select lubricants for refrigeration systems using natural refrigerants
ExxonMobil helps melt away steel mill lubricant issues
Pneumatic Automation Platform
Coil for Gas and Dust
Brewer Saves €20,300 by Switching to Mobil Gargoyle Arctic™ SHC NH 68
Why next generation gas engines need next generation oils
Full-service Bolting Equipment Provider
Compact and Precise Level Switches
Regulators to maintain the desired temperature
Fan Filters for Good air Filtration
Magnetic Drive Gear and Centrifugal Pumps
Oil Free Compressors and Pumps
Oil Free Piston and Diaphragm Compressors and Vacuum Pumps
Oil Free Compressors and Pumps
Valves to Optimise the Performance of Machines and Process
Oil Free Piston and Diaphgram Compressors and Vacuum Pumps
Pneumatic Automation Platform
Driving the Digital Revolution with Hydraulic Fluids
Super High Response Speed Servo Valve
Oval Geared Flowmeter
CPC Couplings Help Microbreweries Brew Success
Direct Acting High-Speed Servo Valve
Two Wire-Braided Hose
Volume Booster
Highly Efficient Water-injected Screw Compressor
Valveless Waste Transfer Pump
Flow Measurement Device
PTFE Membrane Filters
Gas engine operator extends oil drain intervals with Mobil Pegasus 605 Ultra 40
Ultrasonic Flow Meter
Rotary Screw Air Compressors
Stopflex: Patented Retention System for Pressure Hoses
Passive Harmonic Filters
Increased Output, Reliability and Efficiency
Efficient Hygienic Diaphragm Valve
Wave Springs - All Springs Are Not Equal