DOAS systems
DOAS systems
(OP)
ayone constructed DOAS air conditioning system in real before ? I have a few questions .
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RE: DOAS systems
RE: DOAS systems
RE: DOAS systems
In the process of design I need to substitute in the following equation linking enthalpy wheel sensible and latent effectiveness with t and w as follows :
The question is : what is meant by capacitance flow rate and minimum pass flow rate ?
RE: DOAS systems
In the process of design I need to substitute in the following equation linking enthalpy wheel sensible and latent effectiveness with t and w as follows :
The question is : what is meant by capacitance flow rate and minimum pass flow rate ?
RE: DOAS systems
Capacitance flowrate is mass flowrate times heat capacity... which probably was explained in class.
this looks like a Semco Pinnacle system.
RE: DOAS systems
no it isnt homework and not explained in class
yup
its an ASHRAE paper talking about the design steps of DOAS system coupled with a CRCP .
So what does it physically resemble ?
And what do you suggest I shall substitute for Cp with ?
If putting Cp = 1.02 KJ/Kg then whats the point of Cp in the equation if its going to be cancelled in num and den . Cps(Cp and Cp_min) should have different values.But how to find each ?
RE: DOAS systems
What are you trying to do? In most cases the manufacturer would have a software for their equipment that you can use for sizing. You wouldn't know the specific wheel effectivenesses at a specific flowarate anyway.
for example a 3000 cfm ERV has different effectiveness at 2000 cfm than at 3000 cfm.
If you really want to get into detail, I suggest reading up on the Thermodynamics book and use EES
RE: DOAS systems
RE: DOAS systems
You aren't going to get enough design information on a web forum.