초록 ▼

A temperature control system for a fuel cell powerplant comprising two or more fuel cell stacks to which cooling gas and process gases are separately supplied, that comprises temperature detectors each being arranged in a fuel cell stack; stack dampers each being arranged in each of inlet or outlet

A temperature control system for a fuel cell powerplant comprising two or more fuel cell stacks to which cooling gas and process gases are separately supplied, that comprises temperature detectors each being arranged in a fuel cell stack; stack dampers each being arranged in each of inlet or outlet branched pipelines of a circulating pipeline for cooling gas; means for calculating the average value of operating temperatures of all the cell stacks detected by said temperature detectors, a difference between the average value and each detected temperature of the cell stacks, and a difference between the average value and a predetermined value of the operating temperature of the fuel cell stacks; a driver for actuating each stack damper in response to the difference between the average value and the detected temperature of each cell stack, and means for controlling the flow rate and/or the temperature of the cooling gas fed to all the cell stacks in response to the difference between the average value and the predetermined value of the operating temperature.

대표청구항 ▼

A temperature control system for a fuel cell powerplant of the kind wherein the powerplant comprises two or more fuel cell stacks and wherein cooling gas and process gases are separately fed to each fuel cell stack, that comprises temperature detectors each being arranged in a fuel cell stack; stack

A temperature control system for a fuel cell powerplant of the kind wherein the powerplant comprises two or more fuel cell stacks and wherein cooling gas and process gases are separately fed to each fuel cell stack, that comprises temperature detectors each being arranged in a fuel cell stack; stack dampers each being arranged in each of inlet or outlet branched pipelines of a circulating pipeline for cooling gas, said circulating pipeline including a blower and an heat exchanger: means for calculating the average value of operating temperatures of all the cell stacks detected by said temperature detectors, a difference between the average value and each detected temperature of the cell stacks, and a difference between the average value and a predetermined value of the operating temperature of the fuel cell stacks; a driver for actuating each stack damper in response to the difference between the average value and the detected temperature of each cell stack, means for controlling the flow rate and/or the temperature of the cooling gas fed to the cell stacks in response to the difference between the average value and the predetermined value of the operating temperature of the cell stacks.