Safety valve capacity should be?
Same or greater than boiler capacity
But content of natural gas
100,000 btu/therm
Proximate analysis of coal indicates what?
Moisture, volatile matter, fixed carbon,ash
Spalling is?
Caused by temperature changes in furnace
Output if to centrifugal pumps in series is:
Double pressure constant volume
Steam pressure gauge range should be:
At least 11/2 times the safety valve rating
Saybolt viscosimeter is used to
Test and grade oil
Ringleman test determines
Smoke density
Pyrometers measure
Temperature
Amount of excess air in gases of combustion is normally determined by analysis of
O2
A deposit of scale or mud in HRT boiler could cause
A bag to develop