I am drawing a blank. I need to raise the temp of sludge from ambient to 132 degrees, through a heat exchanger. how do I calculate my BTU's necessary to do this?
2007-03-21 00:42:41 · 3 answers · asked by neilg32degree 1 in Science & Mathematics ➔ Engineering
the sludge is WWTP sludge, needs to be heated to between 130 - 134 degrees for the natural bacterias to activate and start the T-PAD process.
2007-03-21 05:27:55 · update #1
Why do you want to put sludge through a heat exchanger? Unless the viscosity is low, it will probably thicken inside the tubes and plug the unit.
2007-03-21 03:03:32 · answer #1 · answered by NJGuy 5 · 0⤊ 0⤋
Q = m * Cp * dT
UNITS [Btu = lbm * Btu/lbm-°F * °F]
In a heat exchanger, you typically deal with flows, so the Q and m terms are Qdot and mdot (heat rate and mass flow rate).
There are types of exchangers that can handle sludge, depending upon its composition and viscosity. I personally have no experience with them, however.
2007-03-22 10:18:20 · answer #2 · answered by Biz Iz 3 · 0⤊ 0⤋
You need to know the heat capacity of the sludge.
2007-03-21 07:48:29 · answer #3 · answered by poorcocoboiboi 6 · 0⤊ 0⤋