What is Hartridge Smoke Unit (HSU) ? for Diesel engine emission


by Su Solberg
Tags: diesel, emission, engine, hartridge, smoke, unit
Su Solberg
Su Solberg is offline
#1
Feb24-09, 02:21 AM
P: 79
I am working of the Diesel Emission Project, however i have some problem in evaluating the filtraion power of the Particulate Remover Unit. The following is my question:

What is Hartridge Smoke Unit (HSU) ?

Could any one can provide some picture of different level of HSU so that I can understand the visual senario of different value (e.g. 25, 50, 100, 150)?

Thank you very much for your kind help.
Phys.Org News Partner Science news on Phys.org
Lemurs match scent of a friend to sound of her voice
Repeated self-healing now possible in composite materials
'Heartbleed' fix may slow Web performance
brewnog
brewnog is offline
#2
Feb24-09, 12:31 PM
Sci Advisor
PF Gold
brewnog's Avatar
P: 2,793
Pictures won't give you a good idea of smoke opacity, which is what you're interested in. A value of 0 indicates perfect transmission, or zero opacity. A value of 100 indicates total absorption, or complete opacity. This is referenced (in the case of HSU) to a transmission length of 430mm, at 100C and atmospheric pressure. Values in between are not linear with respect to actual light absorption.
Su Solberg
Su Solberg is offline
#3
Feb25-09, 03:29 AM
P: 79
Quote Quote by brewnog View Post
Pictures won't give you a good idea of smoke opacity, which is what you're interested in. A value of 0 indicates perfect transmission, or zero opacity. A value of 100 indicates total absorption, or complete opacity. This is referenced (in the case of HSU) to a transmission length of 430mm, at 100C and atmospheric pressure. Values in between are not linear with respect to actual light absorption.
Thank you very much for your reply.
However, I would like to ask how to verify the meaning that the emission is clean or smoky in terms of HSU?
Could you provide some picture??

Thank you very much for your help.

brewnog
brewnog is offline
#4
Feb25-09, 12:00 PM
Sci Advisor
PF Gold
brewnog's Avatar
P: 2,793

What is Hartridge Smoke Unit (HSU) ? for Diesel engine emission


Quote Quote by Su Solberg View Post
Thank you very much for your reply.
However, I would like to ask how to verify the meaning that the emission is clean or smoky in terms of HSU?
Could you provide some picture??

Thank you very much for your help.
0 is invisible, 100 is a thick, dense smoke. Then you have everything else in between. As I stated, pictures are pretty useless, since this isn't a subjective measure, and the same smoke level can look good/bad depending on light conditions, background colour, and dilution.

Pretty smoky:


Pretty clean:
nanao
nanao is offline
#5
Feb17-10, 11:35 PM
P: 2
Anyone who can tell me the corelation between Hartridge Smoke Unit (HSU) and FILTER SMOKE NUMBER(FSN) as I have the two systems giving one in HSU and the other in FSN.I would like to compare the result given by the two SYSTEM


Register to reply

Related Discussions
Reducing Smoke Chemistry 6
What cigarettes do you smoke? General Discussion 60
Historically, what came first: coulomb unit or ampere unit? Classical Physics 2
Why do humans smoke ? General Discussion 41
Peanut smoke? Biology 3