Also for everyone that doesn't know- the desiccant in the drier will suck up moisture from the air constantly until it's at 100%capacity. If it's been awhile, better to just replace the drier.
retro fitting a stock A/C system to R134A
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One additional word of caution re refrigerates...there are some after market suppliers claiming a "revolutionary" refrigerant that can be added to existing R12 or R134a systems that supercharges cooling system (they never explain the how or why).....these so called refrigerants are flammable and operate under high pressures.......if tempted to sdd or use these products.....BE CAREFUL..... Caviet emptor definitely applies!!!
Bob Renton
Bob Renton
Talking about ICE 32? Thought it forced lubricant to stay where it is needed and enhanced cooling.
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What is ICE32 ?? Oil has nothing to do with the heat transfer characteristics of the refrigerant. The oil simply goes along for the ride, so to speak, the total oil charge is only 9-12 oz total. Oil can inhibit the oprrstion of the system IF there id too much of it. What is the composition of ICE32? What is the chemical symbol? What is the specific heat characteristics? How does it interact with the existing system or oil? What operating pressures and temperature should you expect to see when checking the system?...it would be nice to see some published information.
Bob Renton
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To Oldbee,
I agree....i would not use this "snake oil" stuff. It's interesting to note just how gullible some people are...they accept the word of the seller (or the next door's nrighbor's brother in law's cousin's buddy) without any research what so ever. Some time these aftermarket refrigerants are propane or butane (both are flammable gases that are liquefied under pressure and have refrigerant characteristics). Afterall, R12 was derived from reformulated methane, CCl2F2, or dichlorodifluoromethane, which was/is non flammable, color less, odor less and most importantly, an excellent refrigerant. It was originally developed by DuPont as Freon 12,
Bob Renton
I agree....i would not use this "snake oil" stuff. It's interesting to note just how gullible some people are...they accept the word of the seller (or the next door's nrighbor's brother in law's cousin's buddy) without any research what so ever. Some time these aftermarket refrigerants are propane or butane (both are flammable gases that are liquefied under pressure and have refrigerant characteristics). Afterall, R12 was derived from reformulated methane, CCl2F2, or dichlorodifluoromethane, which was/is non flammable, color less, odor less and most importantly, an excellent refrigerant. It was originally developed by DuPont as Freon 12,
Bob Renton
"Ice" says it coats the metal better for heat transfer???? The oil in a/c mainly sits in the bottom of evap.,condenser,and drier. It gets 'picked up' a little by the flow of freon around it. The main source of lube for compressor sits in the compressor all the time the way I understand it.
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Oldbee...
You are about 50% correct....the oil moves thru the system with the refrigerant, with the bulk of it remaining in the dryer and crank case of the compressor (that is why there is an oil pump) but in the newer systems oil moves by differential pressure (like in your central AC). As far as making the ID surfsdes of the condenser and evaporator wetter for brtter heat transfer ..... wrong....heat transfer is a function of surface srea, velocity of the air moving across the heat exchanger, and the temperature of the air being exchanged....its a function LMTD...or log mean of the temperature difference and the specific heat of the transfer media. You can add all the snake oil products you want the only improvement will be in the mind of the beholder. BTW....once the system has been evacuated to remove any moisture, the desiccant serves to maintain the dryness of the system ...it can only absorb 30-40 grains of moisture b4 becoming saturated and evacuation is the best way to remove the moisture should it exist. Perhaps I should conduct a class in thermodynamics and how it applies to automotive AC systems....there appears to be some misconceptions as to the correct operations of the components.....just a thought...
Bob Renton
You are about 50% correct....the oil moves thru the system with the refrigerant, with the bulk of it remaining in the dryer and crank case of the compressor (that is why there is an oil pump) but in the newer systems oil moves by differential pressure (like in your central AC). As far as making the ID surfsdes of the condenser and evaporator wetter for brtter heat transfer ..... wrong....heat transfer is a function of surface srea, velocity of the air moving across the heat exchanger, and the temperature of the air being exchanged....its a function LMTD...or log mean of the temperature difference and the specific heat of the transfer media. You can add all the snake oil products you want the only improvement will be in the mind of the beholder. BTW....once the system has been evacuated to remove any moisture, the desiccant serves to maintain the dryness of the system ...it can only absorb 30-40 grains of moisture b4 becoming saturated and evacuation is the best way to remove the moisture should it exist. Perhaps I should conduct a class in thermodynamics and how it applies to automotive AC systems....there appears to be some misconceptions as to the correct operations of the components.....just a thought...
Bob Renton
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