Thermal stress monitoring in thick walled pressure components of steam boilers

Assessment of the time resolution used to estimate the central solar receiver lifetime

“…The case of just considering the operating conditions at the solar noon for the whole day is also included, since such instant is typically regarded as the design point. All these time intervals are admissible for the analysis since, given the thermal conductivity and thickness of the tubes, they are greater than the time to reach the quasi-steady state, guaranteeing that the corresponding Fourier number is equal or greater than 0.5 [52]. For such analysis, all the time step cases are set to start at 7:00 h (solar time) since it is the first o'clock hour at which the receiver can operate, despite more precise resolutions could start earlier (for instance, 6:51 h for the 1-minute time step).…”

Experimental Validation of An Algorithm for Determining Transient Stresses within Pressure Components by Means of the Tensometric Method

“…For experimental purposes, an existing laboratory stand for a steam header was modernised. The laboratory stand had been used in many experimental campaigns presented in [5][6][7][8]. (2) measuring equipment; (3) outlet header with TC and SG sensors; (4) water treatment station Fig.…”

Transient Thermal Stress Calculation of a Shell and Tube Condenser with Fixed Tubesheet

“…The transient model for monitoring the thermal stresses in pressure components of a steam power boiler is presented in 18. Taler et al showed two methods of transient thermal stress calculation.…”