| In recent years, high power gas turbine has become the focus of research and development,and using complex cycle could improve the performance of gas turbine. Due to the space isnarrow, intercooling cycle gas turbine demands intercooler as tight as possible. Therefore, weneed to develop a light weight, small size, good heat transfer performance compact heatexchanger. Although a variety of techniques are available to enhance heat transfer, majorimprovements in heat transfer capabilities have been held back because of the low thermalconductivity of conventional heat transfer fluids. As a new type of heat transfer medium,nanofluids’ thermal conductivity is very high which have a very great development potential inthe heat exchanger area.This paper introduced the gas turbine intercooling system and intercooler designrequirements with the WR-21gas turbine as an example, then calculated heat transfer conditionof intercooler with pure water,50%concentration ethylene glycol solution and nanofluids withdifferent concentration (1%~5%) as heat transfer medium. According to calculation results, usingnanofluids as heat transfer medium could improve the heat transfer condition of intercooler andsignificantly reduce the volume flow of heat transfer medium and mass flow of seawater.In order to study the heat transfer characteristics of nanofluids in the gas turbine intercooler,the paper designed the heat transfer test system of plate fin heat exchanger and introduced thetest principle, system and content. Focused on the structural design of the specimen and theproblems that need attention in the design process. With water and nanofluid as heat transfermedium, calculated the heat transfer of test system The calculation results were similar to gasturbine intercooling system calculation results, proved the test system could simulate the gasturbine cooling system and provided the basis for application of nanofluids in gas turbineintercooling system. |
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