Adding Larger StarCool Fan ?

[doublevan2]

Greetings --

Has anyone with an E350 V10 had any experience with adding a larger evaporator fan over the van fan area for more air flow ? Mine (I think?) is a 10 inch - not sure about clearance issues (?). Was hoping I could squeeze a 12 or 14 inch fan ?

Looking for feedback and any knowledge level if you've done such a thing ! Thanks --

[boywonder]

Why would you want to do that? For more air flow? You won't get any more cooling capacity......

[doublevan2]

It was just suggested by the AC tech that position and larger size (if fit would work) could help the system. Further discussion to be had.

[boywonder]

More air flow across the evaporator will likely just raise the temperature of the airflow across the evaporator since the amount of heat the evaporator can absorb is defined by the enthalpy (heat of vaporization) of the flow of refrigerant flowing through it.

To increase the amount of heat the evaporator can absorb you need a larger heat exchanger and more refrigerant changing phase to work with the larger fan.

If you could manage to get more heat into the refrigerant you also need to remove the heat on the condenser side....so larger heat exchanger, larger fan....and larger compressor for more flow...which is basically a larger A/C unit.


If you are considering a larger fan that spins slower to reduce noise, perhaps that's doable.

[arctictraveller]

Originally Posted by boywonder

More air flow across the evaporator will likely just raise the temperature of the airflow across the evaporator since the amount of heat the evaporator can absorb is defined by the enthalpy (heat of vaporization) of the flow of refrigerant flowing through it..

Thanks for the refresher course in refrigeration. I'd forgotten about enthalpy diagrams, the last time I saw one was in college, a very long time ago. I wonder if a bigger fan might overcome some of the built in restrictions in the ducting? It probably wouldn't be any colder, but there would be more air flow to feel.

[boywonder]

Originally Posted by arctictraveller

Thanks for the refresher course in refrigeration.

Thermodynamics 101.....lol.

[doublevan2]

Thanks "boywonder" - I'm amazed at the talent and info one can gain from the "wisemen" of this forum - thanks !

[Lazy_Daves]

FYI this is a direct replacement
Mr. Gasket 1984MRG Electric Cooling Fan
https://www.amazon.com/gp/aw/d/B0006...b_b_asin_title

[doublevan2]

Thanks Lazy Daves !

[BrianW]

FYI if you replace the front Starcool fan you need to reverse the fan blade. I described it in a post quite a few years ago: https://www.sportsmobileforum.com/fo...ion-10309.html