초록 ▼

A recuperative air storage plant comprising a gas turbine set and a heat exchanger. In the heat exchanger, exhaust gas heat from the gas turbine set can be transferred to a pressurized stored fluid which flows from a storage volume to a expansion machine. A flow junction with an exhaust gas damper w

A recuperative air storage plant comprising a gas turbine set and a heat exchanger. In the heat exchanger, exhaust gas heat from the gas turbine set can be transferred to a pressurized stored fluid which flows from a storage volume to a expansion machine. A flow junction with an exhaust gas damper which can be operated in a plurality of positions is arranged in the exhaust gas path of the gas turbine set, upstream of the heat exchanger. This exhaust gas damper makes it possible to divide the exhaust gas mass flow (m0) of the gas turbine set in a variable fashion between a stack and the heat exchanger. In this way it is possible to operate the gas turbine set quickly at high power in the electric power network independently of the heat exchanger and the expansion machine, while the thermal load of the air storage part is slowly increased by incrementally increasing the exhaust gas proportion (m1) which flows to the heat exchanger.

대표청구항 ▼

What is claimed is: 1. A method for operating a pressure accumulator plant, wherein the pressure accumulator plant comprises: a gas turbine set, a storage volume for a stored fluid which is under pressure, a stored fluid expansion machine, and a heat exchanger through which exhaust gas from the gas

What is claimed is: 1. A method for operating a pressure accumulator plant, wherein the pressure accumulator plant comprises: a gas turbine set, a storage volume for a stored fluid which is under pressure, a stored fluid expansion machine, and a heat exchanger through which exhaust gas from the gas turbine set can flow on a heat-emitting side and whose heat-receiving side is arranged in a flow path from the storage volume to the expansion machine, and which method comprises:placing the gas turbine set at an operational speed;synchronizing a generator of the gas turbine set with an electric power network and operating the gas turbine set to output power into the electric power network; andapplying stored fluid and exhaust gas from the gas turbine set to the heat exchanger and making available heated stored fluid for the stored fluid expansion machine,wherein the temperature of the stored fluid which is made available for the expansion machine is controlled independently of the power output of the gas turbine set, but as a function of the thermal state of the expansion machine.