portable air con dont get cold

[Britman]

not bad i guess if someone know how dismantle and sell scrap, saw this never hurd make though http://www.ebay.co.uk/itm/Portable-Air-Conditioning-Unit-12000-BTU-H-/261054031366?pt=UK_Home_Garden_Hearing_Cooling_Air&hash=item3cc8086606#ht_639wt_1139

clipper do you know what makes are good or bad or you just know about aircon mechanics

i gooing to die if it hot i really bad with heat i think il acually melt my gaff gets so much sun its unreal

[clipperjay]

I would just work out the dimensions of the room that I'm trying to cool.
Other wise it would be like a mouse shaggin an Elephant?

KWs or BTU loads of calculators to help work that out!
I'm a big fan of American units as is hotter and the compressors they use are Danfoss units or equator rated.
 Not cheap but you get what you pay for?
The idea of heat exchange only works when you dump hot air outside so you would want a unit that has a longish plastic funnel that can be fed to a top window.
 I'm not holy convienced that opening a top window that feeds the hot air outside is not letting more hot air inside? 
If it was me I would get a hole cut out on the glass and have a cover I could feed the funnel through to maximise the cooling. But the cat flap as I call it would be lockable to stop draughts and cold air in winter catch 22 situation.
 
Simple machines really just getting the environment right I'm not an expert on domestic units as I custom build for different applications and I have larger units I can make, but I find A/C is not that good for you I prefer climatising in this country!
My car A/C is never on 
Simple portable units are just not strong enough and always under powered and eats power like its out of fashion

You say you are bad with heat, but we only had A/C in the last 100 years I'm bad with cold which is ironic as I go down to environments of -55 and where ski clothes in the middle of summer I get funny looks when I suit up     
Bottom line cheapest units are ledge mounted where the units are like a box and they get mounted on a ledge where the cooling comes in and hot air is exchanged on the other side of the glass air tight and compact! But are you willing to knock a hole or cut double glazing panel out plus build a concrete ledge for it to sit on?

Manufactures that are good

LG
Daikin
Toshiba
Fujistu
 

[Britman]

i fine with cold  up to minus 5 id say. I never sleep heating on ever. I hurd dual hose ones work much better but unsure how they work. I had double ply white card and taped to window with exact hole inside used be ok while worked. the room is about 5metres by 4 metres but bedroom only about 3 by 3.5, i dont seam see many dual hose ones mainly one i hurd they less energy efficent. as soon as it 27c+ i really stuggle which can be quite common in my lounge due to sun  :evil:a normal unit isnt really an option it council place and it low on funds, cheers

[clipperjay]

Dual duct or dual fan only is as good as the system generates the cooling exchange!
I would assume the compressor and condenser match the cooling volume so it needs more fans and duct to get rid of heat exchanged!
Just buy another mate, councils' don't like people drilling holes into their walls 
Good call on the card it will help abit if not stopping heat flowing back into the room.

[Britman]

thanks for advice on here was amazing advice and explanations, thought id say i sold the exhaust hose for £20  must be rare of old homebase aircon, and before that i bought a used challenge 12000btu for £52 quid of ebay on auction quite local, in good cond works well only use dit about 6days though dam poor summer  . I may sell aircon for scrap the old one wa susing as fan but takes up to much room and swear it smells now stale or of dust not sure if is my carpet or the aircon fan, is a lot of dust stuck in back.

i got an elec meter and worked out it costs me 50p for 4hrs cooling i didnt think was to bad to take edge of as was 30c in my lounge some days got it down to 21c, was good to clear out bedroom before bed too.

[danny_p]

ive never understood these units.

they may take mositure out the air but i don't see how they can cool the room as the condenser is in the same room so surely just add all the heat back to the room, and there is a leccy motor so that'll be adding heat

[golf-sib]

ive never understood these units.

they may take mositure out the air but i don't see how they can cool the room as the condenser is in the same room so surely just add all the heat back to the room, and there is a leccy motor so that'll be adding heat

They intake the rooms air in, cool it down and remove humidity, which is blown back into the room to cool it down. The heat that is produced and withdrawn from the unit is exhausted out through typically 4" ducting outside. Obviously hanging the ducting out the window is not exactly clever so people install a 4" hole in the wall with a gravity shutter on the other side.