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Toyspeed Profile - MrOizo · by **MrOizo** » Tue Jan 18, 2011 1:38 pm

Since reinstalling air con in my work wagon is going to be a mission, does anyone have any recommendations of a portable unit like some people have in caravans?
Is there a 12v system?
I have looked at portable units that require 240v with 3kw - does a inverter need to match this rating?

Cheers.

by **sark.inc** » Tue Jan 18, 2011 3:28 pm

An inverter would need to be near double that, as the electric motor can draw up to twice it's operating power when starting.

p.s 3KW i assume it does not have a standard plug? also you would be drawing a LOT of power from the cars electrical system, around 210amps or so.

Toyspeed Profile - MrOizo · by **MrOizo** » Tue Jan 18, 2011 3:32 pm

Yeah i guess - we have a second charging circuit for batteries on the trailer - that has 2 x N200 sized deep cycle batteries on it.

What could i use as a AirCon system that didnt have a pump on the engine?

Toyspeed Profile - MrOizo · by **MrOizo** » Tue Jan 18, 2011 3:35 pm

Something like this would be ok i guess.
http://www.trademe.co.nz/Home-living/He ... 164163.htm

I have a inverter on board doing nothing which is 1000W or 2000W - cant remember. Getting a bigger shouldnt be a problem. Something that can run off it would be handy.

by **sark.inc** » Tue Jan 18, 2011 3:38 pm

is it a 24v or 12v system? if it's 24v system it would be around 100amp.
it's either a pump run directly off the engine, or indirectly through an electric motor afaik.

p.s you would need to know the power consumption of that unit first.

Toyspeed Profile - MrOizo · by **MrOizo** » Tue Jan 18, 2011 3:42 pm

It's a 12v system. An electric motor driving a pump would be good.

Website · by **pureadrenalin** » Tue Jan 18, 2011 8:40 pm

Website · by **Bling** » Tue Jan 18, 2011 10:40 pm

Jebus

I imagine it's like a fridge in there though haha!

Toyspeed Profile - MrOizo · by **MrOizo** » Tue Jan 18, 2011 10:50 pm

Thats an option.

Better than sitting in 35+ deg heat. 97% humidity doesnt help either

-+=gon-zo-crazy=+- · by **neo** » Wed Jan 19, 2011 12:37 am

seems option 1 is to have a chillibin full of icewater and run that though a radiator of which you have air blowing across. Seems like a cheap work around

url doesnt link in the forum -- http://www.instructables.com/id/Portabl ... p-and-easy!

I'm thinking, have a chilli bin fill of ice water somewhere in the back, pump the chilled water to a radiator that has fans attached in the front of the cabin. When the ice melts, stop in at the servo for another bag

Or Option 2 you want to go to a truck wrecker and try to get an after market cab cooler

http://www.corunclima.com/product3_3.htm US Website, from what ive seen your looking around 1k

by **cat007** » Wed Jan 19, 2011 7:41 am

MrOizo wrote:Something like this would be ok i guess.
http://www.trademe.co.nz/Home-living/He ... 164163.htm

I have a inverter on board doing nothing which is 1000W or 2000W - cant remember. Getting a bigger shouldnt be a problem. Something that can run off it would be handy.

Correct me if I'm wrong, but aren't most 240v houses wired with 15amp fuses? 4000watt @ 240v = 16.6amps....which would pop the fuse every time you used it?

by **Soiled** » Wed Jan 19, 2011 11:43 am

Power outlets are normally 20A breakers, lights 10A, and AC is normally on it's own dedicated circuit so can be whatever it needs to be.

by **whynot** » Wed Jan 19, 2011 5:37 pm

a heat pump/aircon that draws 4000w is a rather large unit. from what i remember most domestic units only draw around 700-1000w but you have to allow for the surge on start up

by **matt dunn** » Wed Jan 19, 2011 7:26 pm

Sounds like a shyte idea to me.

1000W is 1000w no matter the voltage.

So 1000w through a 240v inverter is

1000/240 4.16 amps,

cool,

but the inverter drawing from 12V

1000/12 is 83.3 amps.
So your going to need to fit another alternator to run it,

or a large battery for 10 mins of cooling.

Inverters to run anthing large are way to power hungry.

by **h8wrxs** » Wed Jan 19, 2011 10:29 pm

drive with the window open?

by **cat007** » Wed Jan 19, 2011 10:38 pm

Fixed haha

h8wrxs wrote:drive fast with the window open?

Toyspeed Profile - MrOizo · by **MrOizo** » Thu Jan 20, 2011 12:50 am

matt dunn wrote:So your going to need to fit another alternator to run it,

Not a major - already have another alternator fitted to power the trailer unit. Its the reason the compressor was removed - to fit another alternator.

I'll go and get a price from some places the next few days if i have time.

Toyspeed Profile - MrOizo · by **MrOizo** » Thu Jan 20, 2011 12:53 am

h8wrxs wrote:drive with the window open?

I need to drive and stop every 20m-100m and do testing which takes about 30-45 seconds. in that time things have got damn hot and unbearable.

So not very helpful...

Website · by **pureadrenalin** » Thu Jan 20, 2011 11:37 am

I got a heater from these guys in Aussie for the race car.
They also make (distribute) stuff for air con systems that are put into kit cars.

http://speedyairspares.com.au/

by **ee904age** » Fri Jan 21, 2011 5:30 pm

MrOizo wrote:
h8wrxs wrote:drive with the window open?

I need to drive and stop every 20m-100m and do testing which takes about 30-45 seconds. in that time things have got damn hot and unbearable.

So not very helpful...

That situation isnt going to be great with a/c either, seeing as the door will be opened every minute or so letting all the cool air back out. Plus, I dont know about you but I tend to get sick when walking in and out of aircon'd places all the time, something to do with sudden temp changes.

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