Thread: Remote air cond. condencer?

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Anybody have any opiones on mounting under the cab of my 34?

Originally Posted by Langan

Anybody have any opinions on mounting (A/C condenser) under the cab of my 34?

It's possible to do if you really want to, but it probably won't be near as efficient as having it in front of the radiator.

In my quest for info on this one i found a smaller condenser unit with a dual blade compact fan for mounting under body beside rail . The unit was able to lean at a slight (45 deg) angle if i remember right so to get ground clearence . Here is a link to something simular

http://www.hotrodair.com/index.cfm/p...rod/prd156.htm

IT NEEDS AIRFLOW!!

Just like the A/C performance difference between being stopped and moving down the road, you need maximum air flow thru the coils. You cannot easily achieve the volume underneath the vehicle.

I tried to do the same with a transmission cooler...my original theory was "a bigger fan solves all problems" Wrong! Putting a radiator parallel to a flat surface (such as the underside of a vehicle) really screws up the air flow. Regardless if the fan is seeing an increased pushing resistance OR an increased pulling resistance, the flow is dramatically changed.

Saying that, you see some road race cars that have horizontal radiators....BUT they have unobstructed flow... usually a duct under the car and an unobstructed exit above.

Also, underside coolers suffer from exhaust heat crossover as well as road heat.

Most folks try a horizontal cooler and try a "scoop" type air director....then they add a fan....two fans.....and then move the thing where it belongs...on the roof!!! (just kidding)

Besides, no body in Washington state has a/c!!!! You trying to be different?

I've seen a number of cars with the condensers mounted under the vehicle. They usally have a fan attached to help with air flow. Also have seen them mounted on the inside of the trunk lid. Trunk lid was modified with about 100 louvers to help exhaust the heat.

It' will work, but you need to insure air flow.

Something to keep in mind will be the internal flow of the gas to liquid. If you can tilt it so the gas will enter the high side and gravity will help it flow as it is converted to a liquid. The compressor won't do the job of pushing the liquid up hill, or across a condenser as well as having a little help from gravity. Check on any factory installation, you'll see it enters at the top of the condenser as a high pressure gas, and exits at the bottom of the condenser as a high pressure liquid. If you want to map out a system so it's easy to understand, draw a diamond. Going around the diamond clockwise, starting at the top, label the top point, Compressor, next point, Condenser, next point, expansion valve or orfice, (can be either) and the last point of the diamond, evaporator. You now have a simple A/C system. They all work in this manner. Sniper

Thanks truck is a dailey driver in LA. In some of my other posts I have tryied everything I can or suggested by others to solve the slow speep run hot condition ( just can't get enough air from the fan to run the air in traffic ). So I hope that moving it under truck works. I will move the trans cooler back to front of rad then I have some room for a fan in front for server hot whether

Has anyone run one and liked it?