Compressed air energy storage turbomachinery cycle with compression heat recovery, storage, steam generation and utilization during power generation

Patent · Tue Aug 23 00:00:00 EDT 1988

OSTI ID:6236616

Nakhamkin, M

This patent describes a compressed Air Energy Storage (CAES) plant cycle which utilizes otherwise wasted compression heat by storing such heat in a thermal energy storage (TES) device for subsequent use for steam generation and injection into compressed air flow before entering a high pressure combustion which expands such compressed air to produce additional power. The cycle consists of the steps: compressing a quantity of air in a low pressure compressor during an off-peak load period; partially extracting thermal energy from the compressed air thereby producing cooled compressed air; storing the extracted thermal energy in the thermal energy storage device; further compressing the cooled compressed air in a high pressure compressor; cooling the further compressed air output by the high pressure compressor in an aftercooler; storing the cooled further compressed air output by the aftercooler in an underground air storage during the off-peak load period; producing steam by heating water in the thermal energy storage device during a peak load period; injecting the steam into the compressed air flow before entering the high pressure combustor; combusting fuel in the high pressure combustor to produce a high temperature mixture of the products of the combustion and the steam; and expanding the mixture in a turbine.

• Assignee: Gibbs and Hill, Inc., New York, NY
• Patent Number(s): US 4765142
• OSTI ID: 6236616
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250200* -- Energy Storage-- Compressed & Liquified Gas
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
COMPRESSED AIR STORAGE POWER PLANTS
COMPRESSION
DESIGN
ENERGY RECOVERY
ENERGY STORAGE
EQUIPMENT
HEAT RECOVERY
HEAT RECOVERY EQUIPMENT
HEAT STORAGE
MACHINERY
PEAKING POWER PLANTS
POWER PLANTS
RECOVERY
STEAM GENERATION
STORAGE
THERMAL ENERGY STORAGE EQUIPMENT
TURBOMACHINERY
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION