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 ?
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 ?
As this clearly is a homework question, I suggest you ask your teacher.
Capacitance flowrate is mass flowrate times heat capacity... which probably was explained in class.
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 ?
Specific capacity of OA and EA could be different. Imagine -15°F OA with almost no moisture, and 70°F EA with a lot of moisture.
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 have done this before . How do you design and size the system in real guys ? I need information from engineers whom have done this allot of times before .
