DIY - Cooler AirCon for FREE

[cvkit17]

is it, than have 2 wait lorr, hope 4 the best 4 the other 2 4 u than

wifey lenovo wit tapatalk

2-4-4-6

Ok tomorrow buy nombor ekor

 

[twistedichc]

i can't buy but u can donate 2 me sum if got it big ;-)

wifey lenovo wit tapatalk

 

[vr2turbo]

You touched the discharge side of the compressor? :ahhhhh: that is the hottest part of the AC system. The temp is a lot higher than ambient air to enable heat transfer out of the system. Only 2 tubes to be insulated - the cold condensing tube (low pressure gas tube) and high pressure liquid tube just after the condenser discharge.

Like my myvi, I have to remove my air filter box in order to reach the tight spaces. Maybe we can DIT coz I can fit my hands in tight spaces pretty well haha

The high pressure liquid tube also hot, so not sure to leave it to get cool. They are aluminum tubes....

---------- Post added at 11:06 AM ---------- 6 hour anti-bump limit - Previous post was at 11:05 AM ----------

2-4-4-6

Ok tomorrow buy nombor ekor

Make sure you buy ah!.....

 

[cvkit17]

The high pressure liquid tube also hot, so not sure to leave it to get cool. They are aluminum tubes....

---------- Post added at 11:06 AM ---------- 6 hour anti-bump limit - Previous post was at 11:05 AM ----------



Make sure you buy ah!.....

Later I'll go buy wahahaha...if kena then we TT on me.

My high pressure line is also aluminum. But the temp is certainly cooler than engine surface and other parts...I touched it and it didn't burn my skin so I guess the temp is around 30C. As the refrigerant used varies between cars, the temp would be diff. So just insulate if the tube is colder than engine bay..

 

[vr2turbo]

Later I'll go buy wahahaha...if kena then we TT on me.

My high pressure line is also aluminum. But the temp is certainly cooler than engine surface and other parts...I touched it and it didn't burn my skin so I guess the temp is around 30C. As the refrigerant used varies between cars, the temp would be diff. So just insulate if the tube is colder than engine bay..

Sure lah! if strike, we TT at restaurant already......

Yup, my aluminum hose is not as hot as the engine of course and it runs at the side along the fender not close to engine. That area I find is cooler then the hose therefore leaving it should better.
Wrapping the suction hose will be my target....

 

[twistedichc]

wrapped aluminium pipe from valve all the way 2 the joint of the compressor hose, later if got found sum extra foam will wrap the compressor hose oso, the line after the valve is left as it is

wifey lenovo wit tapatalk

---------- Post added at 07:22 PM ---------- 6 hour anti-bump limit - Previous post was at 07:18 PM ----------

Sure lah! if strike, we TT at restaurant already......

Yup, my aluminum hose is not as hot as the engine of course and it runs at the side along the fender not close to engine. That area I find is cooler then the hose therefore leaving it should better.
Wrapping the suction hose will be my target....

i'd rather u 2 spend it 2 buy tools so when got tt sure we will want u 2 bring it along;/

wifey lenovo wit tapatalk

 

[vr2turbo]

wrapped aluminium pipe from valve all the way 2 the joint of the compressor hose, later if got found sum extra foam will wrap the compressor hose oso, the line after the valve is left as it is

wifey lenovo wit tapatalk

---------- Post added at 07:22 PM ---------- 6 hour anti-bump limit - Previous post was at 07:18 PM ----------



i'd rather u 2 spend it 2 buy tools so when got tt sure we will want u 2 bring it along;/

wifey lenovo wit tapatalk

Want to ask what are those 7 red cables running across at the top?

ha! ha! if strike, no problem got excess for makan and buy tools also. Sure he will spend wisely. Strike less, makan also less mah!.....hahahahahaha

 

[twistedichc]

it's my diy grounding wire, 7 points, fren read from a jap book, got 13 points actually

wifey lenovo wit tapatalk

 

[cvkit17]

Want to ask what are those 7 red cables running across at the top?

ha! ha! if strike, no problem got excess for makan and buy tools also. Sure he will spend wisely. Strike less, makan also less mah!.....hahahahahaha

Bought already but didnt strike. RM1 gone ~ haha

 

[vr2turbo]

it's my diy grounding wire, 7 points, fren read from a jap book, got 13 points actually

wifey lenovo wit tapatalk

Fuh! Those GC are neatly done brother......

Usually they do 5 points only....

---------- Post added at 12:11 PM ---------- 6 hour anti-bump limit - Previous post was at 12:11 PM ----------

Bought already but didnt strike. RM1 gone ~ haha

Too bad, there goes our BIG makan......

 

[twistedichc]

Fuh! Those GC are neatly done brother......

Usually they do 5 points only....

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Too bad, there goes our BIG makan......

thanx for the compliment, got sifu to teach tats y like that, if totally d.i.y. u should see my deer GC:biggri:

---------- Post added at 12:41 PM ---------- 6 hour anti-bump limit - Previous post was at 12:40 PM ----------

Bought already but didnt strike. RM1 gone ~ haha

no luck leehh wat 2 do

 

[vr2turbo]

thanx for the compliment, got sifu to teach tats y like that, if totally d.i.y. u should see my deer GC:biggri:

---------- Post added at 12:41 PM ---------- 6 hour anti-bump limit - Previous post was at 12:40 PM ----------



no luck leehh wat 2 do

Your GC long enough so can neatly place them. Mine bought of the shelf. Some long, some short, so find the nearest place to hook them on....

 

[Supra_Fanatics]

Fuh! Those GC are neatly done brother......

Usually they do 5 points only....

---------- Post added at 12:11 PM ---------- 6 hour anti-bump limit - Previous post was at 12:11 PM ----------



Too bad, there goes our BIG makan......

Yup usually only 5 points which is sufficient.

 

[BeCool]

Just DIY mine, seriously got the improvement on the aircond level.

Mine compressor kong once and repaired last year. After repaired it works fine, but it turn to be not so cold when stucked in the traffic jam.

Check the picture taken inside the car, my windscreen can see the water vapor caused by the aircon, this effect only seen when I got this car brand new from Honda.

This is a fantastic good idea! No more problem when got stucked in the traffic jam. Enjoy cold air whole day today.

 

[stupidcar]

Just DIY mine, seriously got the improvement on the aircond level.

Mine compressor kong once and repaired last year. After repaired it works fine, but it turn to be not so cold when stucked in the traffic jam.

Check the picture taken inside the car, my windscreen can see the water vapor caused by the aircon, this effect only seen when I got this car brand new from Honda.

This is a fantastic good idea! No more problem when got stucked in the traffic jam. Enjoy cold air whole day today.

Madddddd.

 

[Supra_Fanatics]

That's hell a lot of cable tie Even wrapped up the hot pipleline?

 

[vr2turbo]

That's hell a lot of cable tie Even wrapped up the hot pipleline?

Even the power steering hose?
Can't see clearly, but looks like connected to power steering pump?

 

[Supra_Fanatics]

Even the power steering hose?
Can't see clearly, but looks like connected to power steering pump?

Wrap whatever is not wrapped

 

[jin1119]

IMHO wrapping insulation in the suction line (outlet from evap back to compressor) only could help to solve water condensation at outer of the pipe, it actually doesn't help increase the cooling effect in our air conditioning. Instead, suction line (outlet from evap. back to compressor) required more superheat to ensure that they is no liquid droplet back to compressor, where liquid droplet may damage compressor. Hence when the suction line wrapped with insulation will reduce refrigerant superheating back to compressor (mean hot air under bonnet act like superheating for suction pipe to bring up the refrigerant temperature or vaporize the refrigerant become gas before back to compressor). Higher the suction temperature back to compressor could reduce compressor work as it need lesser work to compress to high pressure to condenser coil, compression ratio lesser. You many refer to thermodynamic law P-H P-V diagram for better understanding.

Vapor-compression refrigeration - Wikipedia, the free encyclopedia

 

[cvkit17]

IMHO wrapping insulation in the suction line (outlet from evap back to compressor) only could help to solve water condensation at outer of the pipe, it actually doesn't help increase the cooling effect in our air conditioning. Instead, suction line (outlet from evap. back to compressor) required more superheat to ensure that they is no liquid droplet back to compressor, where liquid droplet may damage compressor. Hence when the suction line wrapped with insulation will reduce refrigerant superheating back to compressor (mean hot air under bonnet act like superheating for suction pipe to bring up the refrigerant temperature or vaporize the refrigerant become gas before back to compressor). Higher the suction temperature back to compressor could reduce compressor work as it need lesser work to compress to high pressure to condenser coil, compression ratio lesser. You many refer to thermodynamic law P-H P-V diagram for better understanding.

Vapor-compression refrigeration - Wikipedia, the free encyclopedia

True. If liquid goes into the compressor it would spoil. Therefore the refrigerant goes into the compressor as saturated vapour. That is why never set your thermostat to the lowest temp. if the load in space is low, e.g. rainy day or in the morning. So make sure the temperature at suction is not lower than approx -9.4 deg C.

Second thing: higher suction temperature back to compressor does not reduce compressor work but increase it. Very simple question: Why does the compressor needs to work harder when the heat inside a room is high? When the load in suction is high, that means the compressor has to give higher refrigerant flow rate in order to dissipate enough heat at the condensing side so that it can obtain 12~15 deg C at the evaporator coil.

COP of the system is Heat/Work (Q/W). The higher the Q, the lower the COP.