Mowing How much horse power is sufficient for A/C?

[buickanddeere]

Here is a ball park number . The numbers sound about right for all that glass and heat from the transmission . Tractor Cabs and Cab Enclosures - AIR CONDITIONING - REGULAR DUTY - ENGINE COMPRESSOR DRIVEN Sims Cab Depot

 

[Texasmark]

As guys get older, they turn up the cab radio volume. This sucks more power off the engine. Instead, turn off the rap music and get an 84" mower. This cuts down on mowing time which results in less suds cooldown after the job is done. Besides, a bandana and a bucket off cool water to soak it in is less sissy.

1 HP is 746 watts. If you had a 1 hp boom boom box in that tractor turned up to 1 hp, if it would go that high, I guarantee you, you wouldn't be inside the cab! The OEM radio is more like 5 watts per channel.

 

[joeu235]

Are you buying the tractor for commercial use or for personal use? If it's personal use and it gets too hot, just mow the grass some other time. If it's commercial use, get something bigger because lost income is worse than some incremental increase in the purchase cost.

 

[TheMan419]

Are you buying the tractor for commercial use or for personal use? If it's personal use and it gets too hot, just mow the grass some other time. If it's commercial use, get something bigger because lost income is worse than some incremental increase in the purchase cost.

Except sometimes in personal use that is the time you have to cut the grass. It is the weekend or the one night where the family does not have an activity etc. Sometimes you just got to get stuff done. That means (in relation to OP's question) if you get the 33 hp unit either sweating it out or going a bit slower.

Of course the A/C is going to draw some power. Will it be enough for OP to notice? Depends on what he is doing with the machine. I was told no way no how would a 5 foot tiller work behind my 25 hp tractor. Guess what? Works like a charm. Would I want to run that commercially? Heck no. Takes too long. But it got done the job I needed to get done. Sure it took a while but I got her done.

My point is that we get hung up on OMG we need a huge tractor so that we can do the job FAST FAST FAST. Well sometimes just getting the job done is what counts.

Anyway off my rant box. Sorry did not mean to rant at you

 

[bdog]

My mini excavator has 23.3 hp and a cab with AC. I notice no difference in performance with the AC on or off. I ain’t pulling a plow with it though.

 

[shui5612]

My mini excavator has 23.3 hp and a cab with AC. I notice no difference in performance with the AC on or off. I ain’t pulling a plow with it though.

A mini ex works on mostly hydraulic fluid, so gpm and psi.

A loss in engine HP will result in a slight loss of GPM which you probably wouldn't feel, plus if there's restrictions and whatnot the hyd hose will heat up more, etc. Same thing goes when you lose some rpm, it will turn a hair slower. Yet it will probably turn the same hair slower as when it's a hot summer day and the hyd fluid is HOT

 

[RickB]

A mini ex works on mostly hydraulic fluid, so gpm and psi.

A loss in engine HP will result in a slight loss of GPM which you probably wouldn't feel, plus if there's restrictions and whatnot the hyd hose will heat up more, etc. Same thing goes when you lose some rpm, it will turn a hair slower. Yet it will probably turn the same hair slower as when it's a hot summer day and the hyd fluid is HOT

Give your keyboard an Imodium.

 

[chim]

............. it takes a lot of power to "compress" fluid.....................

You're correct with that statement, but it's gas that's being compressed.

No compressors are 100 percent efficient. There are losses whether running with an electric motor or with a belt. I'm sure a genuine engineer could give information on that.

 

[Rock Crawler]

Last time I checked, fluid can not compress. It can accept pressure, but it does not compress. Gasses will compress. They will change in volume based on applied pressures. Fluids maintain the same volume no matter the applied pressure.

EDIT: What I was taught 30 years ago in aircraft school is wrong. You can slightly compress fluid with a huge enough force:

Can you compress hydraulic fluid?

Contrary to popular belief, liquids are compressible. For hydraulic oil, a rule of thumb is that it will compress 0.5% for every 1000 psi that is exerted. However, for most applications this side of a flight simulator, we can consider it incompressible

 

[Sawyer Rob]

I think mowing heavy grass in 100* heat with the AC blasting with a small tractor, I would be more worried about over heating the tractor than running out of power...

SR