The measurement of radiant heat flux in large boiler furnaces—II. Development of flux measuring instruments

Abstract To meet power station requirements, two permanently installed instruments have been developed for measuring the heat flux absorbed by the boiler tubes and a portable instrument developed for measuring the incident radiation from the flames. The thermal performance of each instrument has been thoroughly investigated using computer models. Extended trials of the three instruments have been completed which indicate that they can provide accurate and reliable methods for measuring heat flux in boiler furnaces.