초록 ▼

A system includes an anti-icing heat recovery system, which includes a first heat exchanger, a second heat exchanger, and a variable speed fan. The first heat exchanger is configured to receive a working fluid from an exhaust section of a gas turbine engine and to transfer heat from the working flui

A system includes an anti-icing heat recovery system, which includes a first heat exchanger, a second heat exchanger, and a variable speed fan. The first heat exchanger is configured to receive a working fluid from an exhaust section of a gas turbine engine and to transfer heat from the working fluid to a cooled intermediate heat transfer medium to generate a heated intermediate heat transfer medium. The second heat exchanger is configured to receive the heated intermediate heat transfer medium from the first heat exchanger and to transfer heat from the heated intermediate heat transfer medium to air entering the gas turbine engine. The variable speed fan is configured to urge the working fluid from the exhaust section of the gas turbine engine through the first heat exchanger.

대표청구항 ▼

1. A system, comprising: a gas turbine engine; andan anti-icing heat recovery system, comprising: a first heat exchanger configured to receive a working fluid from an exhaust section of the gas turbine engine and to transfer heat from the working fluid to a cooled intermediate heat transfer medium t

1. A system, comprising: a gas turbine engine; andan anti-icing heat recovery system, comprising: a first heat exchanger configured to receive a working fluid from an exhaust section of the gas turbine engine and to transfer heat from the working fluid to a cooled intermediate heat transfer medium to generate a heated intermediate heat transfer medium;a second heat exchanger configured to receive the heated intermediate heat transfer medium from the first heat exchanger and to transfer heat from the heated intermediate heat transfer medium to air entering the gas turbine engine;a variable speed fan configured to urge the working fluid from the exhaust section of the gas turbine engine through the first heat exchanger and to return the working fluid to the exhaust section; anda controller configured to control a fan speed of the variable speed fan based on sensor feedback indicative of an inlet temperature of the air entering the gas turbine engine and an exhaust temperature of the working fluid, wherein the controller is configured to reduce the fan speed of the variable speed fan when the exhaust temperature of the working fluid is less than or equal to a threshold acid dew point temperature, and to modulate the fan speed of the variable speed fan when the exhaust temperature of the working fluid is above the threshold acid dew point temperature and the inlet temperature of the air entering the gas turbine engine is within an anti-icing range, wherein the controller is configured to modulate the fan speed of the variable speed fan to provide anti-icing to the gas turbine engine only when the exhaust temperature of the working fluid is above the threshold acid dew point temperature. 2. The system of claim 1, wherein the second heat exchanger is disposed in an air intake section of the gas turbine engine, and the air intake section of the gas turbine engine is configured to direct air from outside the gas turbine engine through the second heat exchanger and to a compressor of the gas turbine engine. 3. The system of claim 1, wherein the anti-icing heat recovery system comprises a pump system having one or more pumps configured to urge the intermediate heat transfer medium from an anti-icing solution tank through the first and second heat exchangers. 4. The system of claim 3, comprising a skid configured to support at least the first heat exchanger, the pump system, and the variable speed fan. 5. A system, comprising: an anti-icing heat recovery system, comprising: a first heat exchanger configured to receive a working fluid from an exhaust section of a gas turbine engine and to transfer heat from the working fluid to a cooled intermediate heat transfer medium to generate a heated intermediate heat transfer medium;a second heat exchanger configured to receive the heated intermediate heat transfer medium from the first heat exchanger and to transfer heat from the heated intermediate heat transfer medium to air entering the gas turbine engine;a variable speed fan configured to urge the working fluid from the exhaust section of the gas turbine engine through the first heat exchanger;an exhaust temperature sensor configured to measure an exhaust temperature of the working fluid;an inlet temperature sensor configured to measure an inlet temperature of the air entering the gas turbine engine; anda controller communicatively coupled to and configured to receive feedback indicative of the exhaust temperature and the inlet temperature from the exhaust temperature sensor and the inlet temperature sensor, respectively, and to control a fan speed of the variable speed fan to maintain the exhaust temperature above a threshold acid dew point temperature and to provide anti-icing to the gas turbine engine, wherein the controller is figured to control the fan speed of the variable speed fan to the first maintain the exhaust temperature above the threshold acid dew point temperature, and to provide anti-icing to the gas turbine engine only when the exhaust temperature is above the threshold acid dew point temperature. 6. The system of claim 5, comprising a skid configured to support at least the first heat exchanger, a pump system, and the variable speed fan. 7. The system of claim 5, wherein the second heat exchanger is disposed in an air intake section of the gas turbine engine, and the air intake section of the gas turbine engine is configured to direct air from outside the gas turbine engine through the second heat exchanger and to a compressor of the gas turbine engine. 8. The system of claim 5, wherein the controller is configured to reduce the fan speed of the variable speed fan when the exhaust temperature of the working fluid is less than or equal to the threshold acid dew point temperature. 9. The system of claim 8, wherein the controller is configured to modulate the fan speed of the variable speed fan when the exhaust temperature of the working fluid is above the threshold acid dew point temperature and the inlet temperature of the air entering the gas turbine engine is greater than a lower anti-ice temperature threshold and less than an upper anti-ice temperature threshold. 10. The system of claim 5, comprising the gas turbine engine having the anti-icing heat recovery system. 11. The system of claim 5, wherein the controller is configured to control the fan speed of the variable speed fan based on the exhaust temperature, the inlet temperature, an ambient air temperature, and a relative humidity. 12. The system of claim 5, wherein the anti-icing heat recovery system comprises a pump system comprising an anti-icing solution tank and a pump configured to urge the intermediate heat transfer medium from the anti-icing solution tank through tubes in the first and second heat exchangers. 13. The system of claim 12, wherein the pump system is configured to urge the intermediate heat transfer medium through the tubes in the first and second heat exchangers at an approximately constant flow rate. 14. The system of claim 12, wherein the pump system comprises valves disposed along at least one of a plurality of piping segments, the plurality of piping segments being disposed between the pump and the tubes in the first heat exchanger, between the tubes in the second heat exchanger and the anti-icing solution tank, between the tubes in the first heat exchanger and the tubes in the second heat exchanger, and between the tubes in the second heat exchanger and a drain, wherein the valves are adjustable to adjust at least one of a flow rate of the anti-icing solution through the pump system, a concentration of the anti-icing solution flowing through the pump system, and a temperature of the anti-icing solution flowing through the pump system. 15. The system of claim 5, wherein the controller is configured to modulate the fan speed of the variable speed fan when the inlet temperature of the air entering the gas turbine engine is greater than a lower anti-ice temperature threshold and less than an upper anti-ice temperature threshold. 16. A method, comprising: controlling a fan speed of a variable speed fan, the variable speed fan being configured to urge a working fluid from an exhaust section of a gas turbine engine through a first heat exchanger configured to transfer heat from the working fluid to a cooled intermediate heat transfer medium to generate a heated intermediate heat transfer medium for heating air entering the gas turbine engine, based on data indicative of at least an inlet temperature of the air entering the gas turbine engine and an exhaust temperature of the working fluid, wherein controlling the fan speed of the variable speed fan comprises: determining whether the exhaust temperature of the working fluid is above a threshold acid dew point temperature;reducing the fan speed when the exhaust temperature of the working fluid is less than or equal to the threshold acid dew point temperature;when the exhaust temperature of the working fluid is above the threshold acid dew point temperature, determining whether the inlet temperature of the air entering the gas turbine engine is within an anti-ice temperature range; andmodulating the fan speed when the inlet temperature of the air entering the gas turbine engine is within the anti-ice temperature range. 17. The method of claim 16, comprising receiving, via a controller, the data indicative of at least the inlet temperature of the air entering the gas turbine engine and the exhaust temperature of the working fluid from sensors communicatively coupled to the controller, and controlling the fan speed of the variable speed fan via the controller. 18. The method of claim 16, comprising: controlling the fan speed of the variable speed fan based on the inlet temperature of the air entering the gas turbine engine, the exhaust temperature of the working fluid, and a relative humidity;determining whether the inlet temperature and the relative humidity are within the anti-icing temperature range and an anti-icing humidity range, respectively; andmodulating the fan speed when the inlet temperature of the air entering the gas turbine engine and the relative humidity are within the anti-icing temperature and humidity ranges.