Yong Heng compressor cooling mods

[LRP]

This is my final product. When I fill bottles, I use the separate oil/water separator. I didn't mount it on the compressor to keep everything mobile. The VEVOR sheet metal housing is more suitable for cooling the oil.... YongHeng has installed better high-pressure valves.....so I make a clone out of a clone

 

[LRP]

The background of my work is that everything remains mobile without much effort. The large separator is also only used for bottles, so it is not mounted directly on the compressor. Unfortunately, most conversions are often pure handicrafts, which exclude any mobility, ...... neither compact or mobile, you can also use cheaper buckets). My create reaches max 36 degrees when filling the bottle and can conectet wherever 220volt is here in Europe. Easy to use and safe

 

[JimD]

It's warming up here now and I got a better run to determine the benefit of my second computer radiator. A run last year in April was at an ambient temperature within a degree of today here and started and ended at a little lower pressure. But close. The highest temperature of last year's single radiator run was 61 degrees C. Highest temperature of todays run was 57 degrees C. Not a big change but about 4 degrees C with is about 7 degrees F cooler. I did not use any ice in either run. I did have noticable water in the little stock filter which I consider a pre-filter in my setup but the dessicant beads have not changed color so they are not seeing hardly any water. I vent about every 5 minutes and I think that gets most of the water. The second radiator may let me stay below 60 C without ice but if it does it will be close. But dropping in a couple frozen soda bottles is not a big deal and there is nothing magic about 60 C either.

My cooling mods are a larger water pump, water wetter in the water, two computer radiators with fans and a 8 inch fan blowing across the motor. Nothing on the coolant lines. My setup is not very portable but serves me well. I have a GX CS2 now which is very portable.

 

[LRP]

I've now installed a Yong Heng ewin piston/cylinder kit in my VEVOR, as the high-pressure section is significantly better constructed than the VEVOR (piston rings/high-pressure valve). Everything fits perfectly on the VEVOR.
The only thing is that the VEVOR has a better cooling housing, especially for the crankshaft.
At 21 degrees Celsius outside, even with cylinder filling up to 325 bar, the temperature doesn't rise above 60 degrees Celsius at the standard measuring point of the Yong Heng cylinder base.
And the compressor remains very mobile. The compressor stands on vibration dampers, so no "monster frame" with spring suspension is required.
Conversion costs about 250€ and a lot of time, but in return a reliable top compressor with no sparepart issuses.
It's better to avoid all those air-cooled Chinese compressors and I had some, various manufacturers (12/230/110 volts)... they die faster than the money for them is gone from your account.
Everything tested (MAX pressure) in a safe environment!!!

 

[JimD]

It seems to be credible to have a YH setup with very little water. I tried using a 1 gallon container with radiators but the compressor heated up quickly and I turned it off. I probably had air in the lines so I was not getting good cooling to the second stage. I use opaque automobile flexible lines after having the see through lines kink and block flow. But you have gentle radiuses so you should not have that problem and you could see air in the lines if it was there.

The main reason I believe a large storage of water is unnecessary is my compressor rises to 40+ degrees C in the first 5 minutes. I'm using an estimated 2-3 gallons of water. Then it rises much more slowly peaking at around 55 C after running 30-40 minutes. I am not using ice in the water and passing through the bucket isn't doing a lot to cool it. In your setup you should see temperature go up to 40 degrees or more in a minute or two but then rise more slowly like mine does or possibly not even rise at all if your radiator is rejecting heat quickly enough. The higher the temperature of the coolant the more energy it can pass so it should always get to an equilibrium it is just a question of how hot it has to be to get there and how long it takes. I don't think I am getting to equilibrium in my setup because my tank gets full first.

 

[LRP]

I use heat-resistant silicone hoses, which are thick-walled and won't kink in the heat or harden due to the antifreeze, which is important. I also use fans for the electric motor cooling, which also cool the first-stage cylinder. All of this makes the compressor the first choice in terms of price and longevity, unlike the quickly dying air-cooled compressors.

With the conversion to the Yong Heng cylinder/piston kit, the deficiencies of the Vevor were also remedied.