Hitachi, Ltd.

Hitachi Chemical Company, Ltd.

Moriaki Tsukamoto

Shigeo Hatamiya

Yoshiki Noguchi

Osamu Yokomizo

Masahiko Yamagishi

Hidefumi Araki

Kenji Sasaki

Takanori Shibata

Toshihiko Fukushima

Shinichi Hoizumi

Yukinori Katagiri

Kooichi Chino

Isao Sumida

Hisamichi Inoue

Naohisa Watahiki

Kazutake Imani

Takanobu Yamamoto

A gas turbine equipment utilizing high humidity, for preventing generation of white smoke throughout a year, and for restraining radiation of extra heat so as to restrain lowering of heat efficiency, the equipment comprising a humidifying device for humidifying compressed gas for combustion, a heat recovery device for recovering exhaust heat from a gas turbine or the compressed air so as to heat humidifying water in the humidifying device, a recuperator for recovering exhaust heat from the gas turbine and heating the compressed gas for combustion, a dehumidifying device for dehumidifying and recovering moisture in the exhaust gas having passed through the recuperator, and an exhaust gas reheater for heating the exhaust gas after dehumidification, and further comprising a temperature measuring device for measuring a temperature of the exhaust gas passing through the exhaust gas reheater, and a heating temperature adjusting device for increasing the heating temperature of the exhaust gas reheater if a temperature of the exhaust gas measured by the temperature measuring device is not higher than a predetermined value.

Gas turbine equipment utilizing high humidity

The amount of water to be injected in an intercooler is controlled to cool the compressed gas to the saturation temperature. It is difficult to adjust the amount of the water to be injected, however, since the temperature of the compressed gas at an intercooler outlet is actually higher than the saturation temperature. An intercooling system is configured so as to cool a gas to the saturation temperature without controlling the amount of water injection and thereby maintain the reliability of the compressor while improving the cooling efficiency. The intercooling system is located between a plurality of compression stages of a gas compressor to cool the gas that has been in the compressor. A desired amount of liquid is sprinkled to cool the compressed gas while restraining inflow of the liquid into the compression stages.

Cooling apparatus, gas turbine system using cooling apparatus, heat pump system using cooling system, cooling method, and method for operating cooling apparatus

Cooling apparatus of a gas turbine system

A heat energy supply system and method capable of drastically increasing energy efficiency and energy supply efficiency, as well as a reconstruction method of the heat energy supply system. The heat energy supply system comprises a boiler for heating a heat medium and producing steam including water and other vapors, a heat pump including a steam turbine driven by the steam supplied from the boiler and a heat exchanger for heating the heat medium by employing waste heat or heat obtained from environment, thereby producing the steam at a setting temperature, and a steam supply line for supplying the steam discharged from the steam turbine and the steam heated by the heat exchanger to a heat utilization facility.

Heat energy supply system and method, and reconstruction method of the system

A gas turbine equipment includes a humidifying device for humidifying compressed gas for combustion, a heat recovery device for recovering exhaust heat from a gas turbine or the compressed air so as to heat humidifying water in the humidifying device, a recuperator for recovering exhaust heat from the gas turbine and heating the compressed gas for combustion, a dehumidifying device for dehumidifying and recovering moisture in the exhaust gas having passed through the recuperator, and an exhaust gas reheater for heating the exhaust gas after dehumidification, a temperature measuring device for measuring a temperature of the exhaust gas passing through the exhaust gas reheater, and a heating temperature adjusting device for increasing the heating temperature of the exhaust gas reheater.

Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine. A fine water droplet spraying apparatus () is disposed in a suction air chamber () on the upstream side of an air compressor (), and a moisture adding apparatus () for adding moisture to high pressure air supplied from the compressor () is disposed. A regenerator () for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtain an effect of reducing a power for the compressor () and an effect of increasing the output power due to addition of moisture to air () for combustion. Further, since the used amount of fuel is reduced by adopting a regenerating cycle, the power generating efficiency is improved.

Gas turbine installation

Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine. A fine water droplet spraying apparatus () is disposed in a suction air chamber () on the upstream side of an air compressor (), and a moisture adding apparatus () for adding moisture to high pressure air supplied from the compressor () is disposed. A regenerator () for heating the air to which moisture has been added by using gas turbine exhaust gas a heat source is also provided. With this configuration, there can be obtain an effect of reducing a power for the compressor () and an effect of increasing the output power due to addition of moisture to air () for combustion. Further, since the used amount of fuel is reduced by adopting a regenerating cycle, the power generating efficiency is improved.

Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine. A fine water droplet spraying apparatus ( ) is disposed in a suction air chamber ( ) on the upstream side of an air compressor ( ), and a moisture adding apparatus ( ) for adding moisture to high pressure air supplied from the compressor ( ) is included. A regenerator ( ) for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtain an effect of reducing a power for the compressor ( ) and an effect of increasing the output power due to addition of moisture to air ( ) for combustion. Further, since the amount of fuel used is reduced by adopting a regenerating cycle, the power generating efficiency is improved.

Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and little change in design of a gas turbine. A fine water droplet spraying apparatus ( ) is disposed in a suction air chamber ( ) on the upstream side of an air compressor ( ), and a moisture adding apparatus ( ) for adding moisture to high pressure air supplied from the compressor ( ) is included. A regenerator ( ) for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtained an effect of reducing power for the compressor ( ) and an effect of increasing the output power due to addition of moisture to air ( ) for combustion. Further, since the amount of fuel used is reduced by adopting a regenerating cycle, the power generating efficiency is improved.

A gas turbine power plant has no intercooler for compressed air and comprises a compressor, a combustor for burning fuel with compressed air from the compressor to produce combustion gas, a turbine driven by the combustion gas, a generator driven by the turbine to generate electric power, a regenerative heat exchanger which heats the compressed air with the heat of exhaust gas of the turbine and has a water spray arranged therein for spraying water droplets onto the compressed air therein, and a spray device directly communicating with the compressor for spraying water onto compressed air of high temperature from the compressor to humidify the compressed air, the compressed air being led to the regenerative heat exchanger.

Gas turbine power plant

A gas turbine installation includes an air compressor, a combustor for burning fuel together with air discharged from the compressor, and a turbine driven by combustion gas generated by the combustor. The installation includes a spraying apparatus disposed in a suction air chamber on the upstream side of the air compressor and a water adding apparatus for adding moisture to high pressure air supplied from the compressor and which is disposed between the air compressor and the combustor. A heat exchanger is provided between the water adding apparatus and the combustor for heating air prior to the air entering the combustor.

Gas turbine Installation

A gas turbine power plant with no intercooler for compressed air includes a compressor, a combustor for burning fuel with compressed air from the compressor to produce combustion gas, a turbine driven by the combustion gas, a generator driven by the turbine to generate electric power, a regenerative heat exchanger which heats the compressed air with the heat of exhaust gas of the turbine and has a water spray arranged therein for spraying water droplets onto the compressed air therein, and a spray device directly communicating with the compressor for spraying water onto compressed air of high temperature from the compressor to humidify the compressed air, the compressed air being led to the regenerative heat exchanger.

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Tokai, Japan

Moriaki Tsukamoto