Car Insulation

[digitalmohsin]

anyone has experience with diamond Jumbolon rolls? people's opinion on it are on extreme ends. any having personal experience? If its good, I'll give it a try.

yar a pakwheeler tried it on his alto. you can search it in DIY section. he applied jumbolon nicely but i am not sure about what results he got with respect to heat insulation.

[digitalmohsin]

here is the link:
https://www.pakwheels.com/forums/d-i-y-projects/151896-my-diy-insulating-my-car

[digitalmohsin]

just visited swift page and found that pak Suzuki uses asphalt sheets for sound deadening. i think it can also reduce incoming heat. so can these asphalt sheets be used in other cars?

[talhawaleed]

Best I can think of is, your air conditioning pipes runs from Engine Area to the inside compartment. We all know that Engine compartment is extremely heated area. If you can insulate those pipes with proper insulating rubber then definitely car cooling will improve.

Make sure that you pay special attention to return pipes from Condenser because refrigerant has already turned into high pressure liquid form from high pressure gas form and once it will pass through the expansion valve then the same liquid refrigerant will become low pressure/low temperature liquid which will cool the air inside the compartment.

So if you can control the high pressure liquid line and low pressure liquid line from taking the heat from engine compartment then cooling will definitely improve and load on compressor will also reduce.

[zank]

^ Agree cent percent.
But who does it best and professionally in here?
My AC mechanic says that my car does not need it, but I feel it is required...

[xzap042]

covering ac pipes is quite unnecessary. the cold one is the return pipe that goes into compressor, covering it wont do any good. covering the other one is also pretty useless as the liquid is already hot.

[talhawaleed]

Covering the pipe which goes towards the low pressure line will benefit you. My reasoning is that high pressure/high temperature gas changes its form to high pressure high temperature liquid. Expansion valve converts the high pressure high temperature liquid to low pressure low temperature liquid. So if some how you can insulate the high pressure liquid line in engine area which is ready to be converted into low pressure low temperature liquid then definitely this will improve the cooling inside the car as the temperature difference between both lines will reduce.

Experts are invited to comment on this.

[xzap042]

Covering the pipe which goes towards the low pressure line will benefit you. My reasoning is that high pressure/high temperature gas changes its form to high pressure high temperature liquid. Expansion valve converts the high pressure high temperature liquid to low pressure low temperature liquid. So if some how you can insulate the high pressure liquid line in engine area which is ready to be converted into low pressure low temperature liquid then definitely this will improve the cooling inside the car as the temperature difference between both lines will reduce.

Experts are invited to comment on this.

you are right but compressed liquid is hot just like in radiator, it is passed through its own radiator to cool that compressed liquid. if your radiator does an excellent job of cooling the liquid to normal temperatures AND your input pipes are protected from engine heat, then it will be beneficial, but i doubt it will bring a substantial improvement.

[talhawaleed]

Basically in high pressure side, once the high pressure gasses passes through the condenser which is basically a Radiator as it radiates the heat away from high pressure gasses. Gasses changes its form from gas state to the high pressure liquid state. Due to high pressure, the high pressure gasses have to spend more time in condenser as compared to evaporator. Ideally once these gasses have reached a Mid point in condenser then they should have changed its state from gas to liquid state. If you will make a search on internet regarding superheat then you will clearly understand what I am trying to tell you. For good cooling ideally it should have changed its form at Mid Point which is basically found by calculating superheat. Our Ac technicians are illiterate and they are completely unaware about this. Now this high pressure liquid is basically ready to be converted into low pressure liquid once it will pass through expansion valve. So if you will touch the high pressure liquid line then you will realize that it is considerably cold so if some how you can protect the line from taking any further heat from engine compartment then you can experience good results.

All I am trying to say is that this high pressure liquid has already passed through condenser so we should try to insulate this line as this may improve the cooling.

[Xulfiqar]

Basically in high pressure side, once the high pressure gasses passes through the condenser which is basically a Radiator as it radiates the heat away from high pressure gasses. Gasses changes its form from gas state to the high pressure liquid state. Due to high pressure, the high pressure gasses have to spend more time in condenser as compared to evaporator. Ideally once these gasses have reached a Mid point in condenser then they should have changed its state from gas to liquid state. If you will make a search on internet regarding superheat then you will clearly understand what I am trying to tell you. For good cooling ideally it should have changed its form at Mid Point which is basically found by calculating superheat. Our Ac technicians are illiterate and they are completely unaware about this. Now this high pressure liquid is basically ready to be converted into low pressure liquid once it will pass through expansion valve. So if you will touch the high pressure liquid line then you will realize that it is considerably cold so if some how you can protect the line from taking any further heat from engine compartment then you can experience good results.

All I am trying to say is that this high pressure liquid has already passed through condenser so we should try to insulate this line as this may improve the cooling.

If the liquid line is placed nicely and isolated like most cars have it - tucked away in the corner of the engine room insulating it will do nothing measureable. The best way to improve effeciency of your A/C unit is to be positively sure that the condenser is getting cooled down - meaning it has no debris stuck in it and is not covered with dust/mud etc.

Another part to improve cooling is to somehow direct all the air hitting the front of the condenser actually goes through it - this can be achieved by proper engine bay air exhausting and ducted channels to the condenser. It really helps a lot.

[Xulfiqar]

just visited swift page and found that pak Suzuki uses asphalt sheets for sound deadening. i think it can also reduce incoming heat. so can these asphalt sheets be used in other cars?

They cant even spell correctly

[ghost_riderr1]

hahaha quite n quiet huge difference

[xzap042]

If the liquid line is placed nicely and isolated like most cars have it - tucked away in the corner of the engine room insulating it will do nothing measureable. The best way to improve effeciency of your A/C unit is to be positively sure that the condenser is getting cooled down - meaning it has no debris stuck in it and is not covered with dust/mud etc.

Another part to improve cooling is to somehow direct all the air hitting the front of the condenser actually goes through it - this can be achieved by proper engine bay air exhausting and ducted channels to the condenser. It really helps a lot.

ducting air is a nice idea, I have personally observed a huge difference in cooling performance when the condenser is clean and it has good air flow.

[Xulfiqar]

In my VW - the radiator is fit at an angle - meaning its not straight against the radiator support (front patti etc whatever).. It tucks underneath it at the right side and is in the engine bay at the left side, next comes the condenser which is also fit exactly like the radiator, this fitting leaves a void on the left of the car beside the headlamp, When I got my car the little plastic panel thats supposed to go between the radiator and the headlamp was missing which was causing irregular radiator temperature.

I cut a panel from ABS plastic myself and fit it there - and sealed it off with some used bonnet gasket rubbers and silicone. I did this all the way to the front grill which is about 5 inches. It restored cooling system performance back to perfect along with A/C performance.

Previously the condenser would heat soak itself and the cooling fan would be spinning full speed after a long run. After that the cooling fan very ocassionally kicked to high speed after a long run. I later got the original VW part from dubai scrap..

I think it was removed by a dimbulb mechanic because it interferes in removing the radiator support in order to remove the radiator.

[uswah123]

dynamet is a good choice is you are having a new car

[imranahmed999]

what about fibreglass covering

[naeemmasood360]

Bro I am a trucker and we used to insulate our cabins from the heat of engine. you know truck engine is very big and produce a lot of heat & it is right under the cabin. The material we used is of silver colour and it only costs PRS.2500. it is enough for eight feet wide cabin of a truck. you can get this stuff from TRUCK ADDA of any city. Mostly the guys who do Poshish work can provide you.

just go and ask them

jeeri truck day cabin day thallay silver sheet lagdi ay O day dayoo..........................

[umairalvi815955]

Can u be more specific please