Dimesions pure sine inverter question

[IdaSHO]

So the "real" EER 6824BTU / 350W = 19.5 ?

No.

You must convert the watts to watt hours first in order to use that formula.


As I mentioned, EEC uses time. Watt hour is the amount of work (electricity) used over time (hour)

A watt is simply a measure of work (electricity) used at any given moment in time.

 

[IdaSHO]

Looking further, I find this formula on the site I linked.

using that formula, and using the figure I assume is COP from your chart, we get this...

2.2 (COP) x 3.41 = 7.51 EER


Assuming all that is correct. That is your units EER. 7.51
And not a terribly great rating at that. These days a good one is 10+


Like I said, no free lunch.


Please feel free to correct me.
Im (re) learning this as we go.
its been a while!

 

[LeishaShannon]

Its the 2nd most efficient AC available, something must be getting lost in translation from metric to that weird system you guys use

using that formula, and using the figure I assume is COP from your chart, we get this...

2.2 (COP) x 3.41 = 7.51 EER

Assuming all that is correct. That is your units EER. 7.51
And not a terribly great rating at that. These days a good one is 10+

Except the COP as per the chart is 5.56 , so using the "EER = COP * 3.41" formula we get the the EER as 19... pretty close to what I calculated originally...

Or if you use the 2.0kw nominal output figure, convert it to 6824BTU (cooling power) , and then divide by 350W (electrical power) you get 19.4...

 

[IdaSHO]

OH!

My eyes got mixed up, I pulled numbers from the inrush current row :chef:

You are right, that puts it north of 19


Im going to need photos of this unit and how it is installed. :sombrero:

 

[LeishaShannon]

Although it has a nice grey vinyl cover over it now

 

[dwh]

It looks like a nice unit though. Does it vent to the exterior?
Many do not, so any cooling they do is a wash due tot he amount of heat it adds to the equation.

There is no free lunch. If you are removing heat from air, it HAS to go somewhere

It's just a Mitsubishi home-style mini-split mounted on a truck. So yes, of course it vents outside. Are there actually any air conditioners that *don't* vent to the outside?

 

[IdaSHO]

There are.

They are small, and are marketed as efficient, personal use AC units.

Like this one..

http://www.homecrux.com/2015/02/24/25208/close-comfort-350-watt-personal-ac-indoor-outdoor-use.html

 

[dwh]

There are.

They are small, and are marketed as efficient, personal use AC units.

Like this one..

http://www.homecrux.com/2015/02/24/25208/close-comfort-350-watt-personal-ac-indoor-outdoor-use.html

Hahaha. Okay, I'll give you that one. But we both know that thing is a joke.

 

[IdaSHO]

And when I heard "350w super efficient" thats what I was envisioning. A joke.

I had no idea those large mini split units were that efficient. Very good to know.

 

[rabbiporkchop]

I just bought a dimensions pure sine 800w inverter. My intent was to run a 5000btu air conditioner while I was driving. I tried it with an older ac and it overloaded it on startup. I could not find the specs on the ac . My question do you think if I buy a new ac that it will handle the startup. I know that it takes 2/3 times the watts to start it. The new acs say low startup but I cant find the exact watts for the start up.

Mine is a 1400 watt version, and it struggles to run an a/c unit

 

[228B]

.
This is a great thread! the title of which does it little justice. Please consider a thread title edit to include "air conditioning"?

 

[Big mike]

I run a 3500 watt pure bright inverter in my AT chaser trailer , charged by 125watt solar panels and a great deep cycle battery.
My wife runs her coffee maker her hair dryer and when it's hot I run the small Ac unit for my RTT and annex . Works great. For fun I tried some stuff at home like large fridge power tools and so on.
This should work for whatever you want . And reasonably priced easy install
Mike