HP and a/c

[jimg]

I know Ive seen this somewhere in TBN but I cant find it. So Ill ask again but only in regard to NH tractors....how much hp should I expect a/c to consume in a new tractor? Does it depend on model? How about older models (mid 80s to 90s models)? I would expect theyd be less efficient but by how much (assuming the a/c unit is in good working order)? Just so I understand this correctly...if Im consuming x hp for the a/c thats x hp less Ill have at the PTO? In other words PTO hp figures dont include other power drains (like a/c).

 

[JerryG]

It was about a years ago, in the JD forum.

 

[jimg]

Im not finding it...Ive looked in both forums for all of the likely variations/combinations of air conditioning and horsepower (including abbreviations). Do you recall if the title is about this topic in particular or did it morph into that as the discussion progessed?

 

[Robert_in_NY]

Richard (cowboydoc) was the main one discussing it from his own experiences. Toss him a PM and fire the questions at him or go to the general board and ask

 

[KenPauling]

With the newer TN series of tractors, it isn't an issue. I have a 2 year old TN65D with cab and it seems the a/c unit uses so little power, it isn't an issue. I've pulled a 3 bottom plow while using the a/c cycling it from off to on and no noticible decrease in power, ground speed or rpm. I've pulled a 13 foot disc and a 6 foot mower with the same results- NOTHING! It makes no difference to the newer tractors. Ken

 

[KenPauling]

With the newer TN series of tractors, it isn't an issue. I have a 2 year old TN65D with cab and it seems the a/c unit uses so little power, it isn't an issue. I've pulled a 3 bottom plow while using the a/c cycling it from off to on and no noticible decrease in power, ground speed or rpm. I've pulled a 13 foot disc and a 6 foot mower with the same results- NOTHING! It makes no difference to the newer tractors. Ken

 

[AndyMA]

I agree with Ken. On my TN75D, switching the a/c on and off has no noticable effect on power. I suspect that the a/c is using a hp or 2, but that these engines have such significient torque reserve that they just producte the small amout of extra power required and you don't notice it.

Andy

 

[AndyMA]

I agree with Ken. On my TN75D, switching the a/c on and off has no noticable effect on power. I suspect that the a/c is using a hp or 2, but that these engines have such significient torque reserve that they just producte the small amout of extra power required and you don't notice it.

Andy

 

[jimg]

I could believe that new tractors would be very efficient. However, a new tractor isn't in my future as the cost is just too high. If I can find a good used TL or TS that would be nice but I think Ill wind up w/ something a bit older. My impression is that older machines won't be so efficent.

 

[jimg]

I could believe that new tractors would be very efficient. However, a new tractor isn't in my future as the cost is just too high. If I can find a good used TL or TS that would be nice but I think Ill wind up w/ something a bit older. My impression is that older machines won't be so efficent.