COMBINED CYCLE POWER PLANT

摘要

PROBLEM TO BE SOLVED: To improve heat transfer efficiency of an exhaust heat recovery boiler of a combined cycle power plant. SOLUTION: The heat recovery boiler includes a duct for receiving and confining gas turbine exhaust gas from the gas turbine. Heat transfer tubes 32 for heating water and/or steam 35 for use in a bottoming steam cycle (steam turbine and/or process steam) are disposed within the heat recovery boiler and have exterior surfaces in fluid communication with the gas turbine exhaust gas and interior surfaces in circulatory fluid communication with water and/or steam. A cellular material 40 is attached to the exterior surfaces of the heat transfer tubes 32 and operates to enhance heat transfer from the gas turbine exhaust gas to the water and/or steam 35. COPYRIGHT: (C)2010,JPO&INPIT