10/13/2023 0 Comments Coolant for car acIt heated up immediately and affected the efficiency of cooling.I wrapped the pipe by asbestos belt.I amazed to found that the car cooling is even much better than before. I found my car Ac tube is not insulated and it is moving over the engine. If freezing of the compressor was a problem, then it would not be possible to install air conditioning in cars that are in cold climates for part of the year. The freezing point of R134A is -103 degrees C. I strongly doubt that I will be "freezing" my compressor. In general, air conditioning is more efficient if the pipes are insulated. Previously it was usually hot at first start due to the non-insulated pipes sitting in the hot engine bay. I stopped at the shopping center for 30 minutes and when I came out the air conditioning came on cold very quickly when I started the car. I drove the car for 10km after completing the insulation (at the time of writing it's early summer in Brisbane, Australia, 28 degrees C, 82 degrees F), and the air conditioning worked very well. I tried getting adhesive cork but it was not available locally. I also used adhesive rubber backed aluminium that is usually used for roofing repairs. I used some non adhesive 0.3mm aluminium roof flashing to insulate the pipes in places. I started to use conventional foam rubber on my air conditioning pipes, which is also used for hot water pipes, but I realised that because some of the pipes are close to the exhaust manifold, it could start a fire if they fell onto the pipe. If you value your health, and if you do not want to get asbestosis tumors (mesothelioma) of the lungs, then do not use any asbestos. If you do, you could be introducing dynamics into the system they weren't designed for and you won't being doing much to improve the efficiency (if you improve it at all). Vehicle AC units are work pretty darn well (even with R134a in them) considering what they have to do and the amount and quickness of cooling they have to do. These conditions are very easily met in most situations. Remember in order for condensation to form on this pipe it only has to meet two conditions: 1) pipe has to be cooler than the dew point 2) there has to be humidity in the air. Engineers have taken all of this into account when designing the AC unit in the first place. Since the system is designed without the insulation, it may actually be detrimental to some of the working parts for it to be colder (may cause freezing of moving parts/evaporator). (In the graphic, it's the pipe from the evaporator to the compressor.) Any loss here will not make a difference in the overall performance or efficiency of your AC unit. The cold side of the piping is after the evaporator, headed back to the compressor.If you think about it, though, it makes sense and here are three reasons why you shouldn't worry about it: I understand your concern, but you will not find a car coming from the manufacturer which has insulation around the piping.
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