ME405_Lecture_13

ME405_Lecture_13 - 3 (steady-state mass concentration of CH...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
ME 405 Fall 2006 Professor John M. Cimbala Lecture 13 10/04/2006 Today, we will : Do another example problem using flux chambers Discuss empirical equations for emission rates in Section 4.2 Do some example problems Discuss evaporation and diffusion in Section 4.5 Example Given : Methane (CH 4 ) is emitted from a 3 m × 1 m manure tank in a barn. A flux chamber is built on top of the tank to measure the emission rate. The following quantities are measured: Note : We drop the subscript j since there is only one species of concern. c a = 0.0020 mg/m 3 (ambient mass concentration of CH 4 in the barn) Q a = 0.018 m 3 /s (bulk air flow rate into the flux chamber) c ss = 0.15 mg/m
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 3 (steady-state mass concentration of CH 4 leaving the flux chamber) To do : Calculate s , the source strength per unit area (emission rate per unit area) of methane from the tank. Solution : Tank Manure S Flux chamber Q a c a c ( t ) c ( t ) Out In Q a To methane sampling instrument (a) vapors fill pipe lid tank vapor emissions (b) vapors fill pipe lid tank vapor emissions (c) vapors fill pipe lid closed tank vapor vent for recovery or to atmosphere Figure 4.3 Methods to fill vessels with liquids; (a) splash filling, (b) submerged filling, and (c) bottom filling (redrawn from AWMA Handbook on Air Pollution Control, 2000)....
View Full Document

Page1 / 8

ME405_Lecture_13 - 3 (steady-state mass concentration of CH...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online