초록 ▼

A water droplet mist is sprayed into the air upstream of the gas-turbine compressor inlet to increase power output from the gas turbine. The water has the effect of lowering dry-bulb temperature of the air entering the compressor inlet. To supply an amount of water appropriate for anticipated ambien

A water droplet mist is sprayed into the air upstream of the gas-turbine compressor inlet to increase power output from the gas turbine. The water has the effect of lowering dry-bulb temperature of the air entering the compressor inlet. To supply an amount of water appropriate for anticipated ambient conditions, a plurality of different capacity pumps are provided to supply water over a wide range of water flow rates. The control system for the pumps avoids the use of a set-point temperature for the inlet air obtained from measurements taken downstream of water injection. The operator inputs a desired relative humidity of air entering the compressor, and the control system determines the appropriate flow rate of water using the following measurements: flow rate of dry air to the compressor; flow rate of inlet water; dew point temperature of the inlet air; dry-bulb temperature of the inlet air; and temperature of the inlet water.

대표청구항 ▼

1. In a control system for a water mister in a gas turbine having a compressor, an inlet to the water mister for receiving ambient air and an inlet to the water mister for receiving water, a method for providing air humidified by the water mister to the compressor, comprising the steps of:(a) measur

1. In a control system for a water mister in a gas turbine having a compressor, an inlet to the water mister for receiving ambient air and an inlet to the water mister for receiving water, a method for providing air humidified by the water mister to the compressor, comprising the steps of:(a) measuring the dry bulb temperature of the ambient air upstream of the water mister; (b) measuring the temperature of the water supplied to the water mister inlet; (c) measuring the flow rate of dry air to the compressor; (d) measuring one of a dew point temperature, a wet bulb temperature and relative humidity of the ambient air upstream of the water mister; and (e) controlling the flow rate of water supplied to the water mister to humidify air supplied to the compressor to a predetermined relative humidity in accordance with the measurements of steps (a)-(d).