Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Some thoughts on boiler efficiency

bob_46
bob_46 Member Posts: 813
Recent posts have related to measuring boiler thermal efficiency. I have doubts that this can be done with any degree of accuracy outside of a laboratory. To start with we need to know the input accurately. Gas meters measure volume not weight. A one inch change in the barometer will change the BTU / CU.FT. content of natural gas 3.25%. Next we need to know the flow rate through the boiler accurately. With a 5 GPM flow rate an error of .1 GPM will change our result 2%. Next is ∆T , a 1ºF inaccuracy equals 5%. I have found that even small changes in thermometer well location can effect temperature readings. Now if you figure in possible stacking error where are we? Happy New Year. bob
bob

Comments

  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
    We're close

    enough for the girls WE go with :-) Point taken.

    Happy Gnu Ears to you as well robert.

    ME (headed for Heeney)
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
This discussion has been closed.