Harmonic mean temperature difference is given by

Question

Admin · Accepted Answer

2 (&Delta;T1 . &Delta;T2)/(&Delta;T1 + &Delta;T2)

Admin · Answer

&radic;(&Delta;T1 . &Delta;T2)

Admin · Answer

2 (&Delta;T1 . &Delta;T2)/(&Delta;T1 - &Delta;T2)

Admin · Answer

(&Delta;T1 - &Delta;T2)/(&Delta;T1 . &Delta;T2)

Q. Harmonic mean temperature difference is given by