During ASME PTC 4.1 testing, several key parameters are measured to evaluate the performance of the steam generator. These parameters include:
The code requires you to measure the flue gas temperature after the last heat recovery device (economizer or air heater). However, if air infiltration occurs downstream, PTC 4.1 provides a complex correction to back-calculate the temperature at the air heater exit. Most engineers skip this; the best engineers follow Appendix F to the letter. Asme Ptc 4.1.pdf
The air in the archives was thick with the scent of ozone and decaying glue, but didn't mind. He had finally found it: ASME PTC 4.1.pdf During ASME PTC 4