Abstract
The present study is intended to evaluate heat transfer characteristic and strength at elevated temperature of a receiver in which concentrated solar radiation is converted to thermal energy. A flat-plate receiver is considered as an object of the present study, and a small-sized prototype of flat-plate receiver which is compounded of a steel fin and copper tubes is designed and manufactured for trial. Temperature and strain in the receiver subjected to concentrated radiation by use of solar simulator are measured, and time-evolution of temperature and thermal stress in the receiver are examined.