3.6 A/C Upgrade

[SilberUrS6]

Originally Posted by brads911sc

No car I have ever been in was too cold. No car has ever provided discomfort. Sorry wwest. Why don't you run along to the early bird special.

Oh, now it's about DISCOMFORT, and not the absolute temperature of the interior. Another moving of the goalposts by wwest.

And to think that ANYONE could be discomforted by the stock 911 AC system.

LMAO. Heck, even with Griff's stuff, my car is acceptable. I think I spent exactly the right amount of money, LOL.

WAIT! I'm supposed to have buyer's remorse, right? The only remorse I have is that I had to get filthy to change out the stuff.

[SilberUrS6]

Originally Posted by kuehl

Kuehl systems come with the most detailed installation instructions found anywhere as well as above normal tech support and sound warranty.

OK, I've been a little sarcastic in this thread,. but let me be completely serious for a moment.

I have written installation instructions for automotive parts before. More than once. I have taken pictures, and offered helpful hints.

Kuehl's instructions are better than what I wrote. If I were to find fault, it would be ONLY that there are fewer photos than I would like. Now, this is personal preference - the written instructions are so comprehensive that *photos are not necessary.* Let me repeat this. You could install the GTI stuff without any reference photos. Easily.

This is unprecedented in the aftermarket industry, IME. Most folks work on the hardware, sell it, and expect the customer and his mechanic to figure stuff out. Not Charlie. He sells you good stuff, then writes excellent instructions AND then holds your hand over the phone.

None of the stupid lies that wwest tells will change that. You want quality product, excellent support and true DIY? Even for the mechanically shy? Spend some money and go with Griff.

Want to waste money and wish you had listened to me in the first place? Take wwest's advice.

[SilberUrS6]

Originally Posted by Bob Kontak

I wanna buy so much stuff from kuehl that I could just scream.

Do it.

Do it now.

[brads911sc]

Wwest= buyers remorse. 100% of the time.

[brads911sc]

I agree with Eric on written materials. With Rennaire you get a bunch of parts in a box. Doesn't come with any written material at all. It's night and day to what you get with GTI.

[SilberUrS6]

Originally Posted by brads911sc

I agree with Eric on written materials. With Rennaire you get a bunch of parts in a box. Doesn't come with any written material at all. It's night and day to what you get with GTI.

I was totally blown away by the instructions. I thought what I wrote was detailed and descriptive. Kuehl sets the bar very high here.

If I ever write DIY instructions again, Charlie's documentation will be the template I follow.

[wwest]

Originally Posted by brads911sc

Rennaire doesn't make a fender unit. Get your facts straight...

Done, Thanks.

[wwest]

Originally Posted by SilberUrS6

Oh, now it's about DISCOMFORT, and not the absolute temperature of the interior. Another moving of the goalposts by wwest.

Nothing is absolute, human comfort is a function of several factors, many of them interactive.

And to think that ANYONE could be discomforted by the stock 911 AC system.

LMAO. Heck, even with Griff's stuff, my car is acceptable. I think I spent exactly the right amount of money, LOL.

WAIT! I'm supposed to have buyer's remorse, right? The only remorse I have is that I had to get filthy to change out the stuff.

....

[Bob Kontak]

Originally Posted by wwest

Do I smell an Attorney's work product.........

I smell urine like I do at my 80 year old dad's house.

[Bob Kontak]

Originally Posted by SilberUrS6

The only remorse I have is that I had to get filthy to change out the stuff.

Griff never tells you about that part. I had to get under my car and everything to change out the hose.

Also, NOW my two piston Sanden 507 has simply been re-labeled to a kuehl 507 stupid five piston?

[kuehl]

This is why Willy has too much time on his hands:

Strobe is always searching for rare talented people looking for a unique challenge in computing. Strobe offers a unique working environment with competitive wages and benefits.:
in support of the discontinued HP1000! HP1000 products are no longer for sale. They were removed from Hewlett-Packard's corporate price list on November 1, 2000

"There are no Administration positions open at this time."
"There are no Manufacturing jobs available at this time."
"There are no Engineering positions open at this time."
"There are no Sales positions open at this time."

But..... Strobe is always searching for rare talented people!

[Ronnie's.930]

Originally Posted by wwest

....Nothing is absolute, human comfort is a function of several factors, many of them interactive.

Right = 68-72 degree cabin temps and lowest possible humidity.

[Ronnie's.930]

Originally Posted by SilberUrS6

He says that 78 degrees is cool enough.

Nonsense, on a stick. 78 degrees is too warm for me in a car. I like it COOL in there - 70 degrees, or even a little less. My wife likes it at 70. But not much lower. We often compromise at 70. When our house gets to be 78 degrees inside, we start turning on the AC to cool it down. My max in the house is 74 degrees.

His idiotic idea that EVERYONE wants 78 degrees is so dumb as to be forehead-slapping in the world of dumb.

Pretty similar to me, however, I prefer it much cooler in the house, particularly for sleeping, so I use a window unit, in addition to central air, to cool my room as much as possible (I also use a mattress chiller). I really am living in the wrong part of the country!

[wwest]

Originally Posted by kuehl

This is why Willy has too much time on his hands:

Strobe is always searching for rare talented people looking for a unique challenge in computing. Strobe offers a unique working environment with competitive wages and benefits.:
in support of the discontinued HP1000! HP1000 products are no longer for sale. They were removed from Hewlett-Packard's corporate price list on November 1, 2000

"There are no Administration positions open at this time."
"There are no Manufacturing jobs available at this time."
"There are no Engineering positions open at this time."
"There are no Sales positions open at this time."

But..... Strobe is always searching for rare talented people!

Yes, and I am now in the process of "flunking" retirement...

[kuehl]

Originally Posted by wwest

Yes, and I am now in the process of "funking" retirement...

So, that means when you 'officially' retire .... you are going to be funking bored.

[Barrpete]

Originally Posted by wwest

Water was at 39F, airflow to be cooled was at 100F...

OEM delta with water was, 100F - 62F = 38F, adjusted for R-134a, 38F/14 = 2.71F.

"Other" delta with water was, 100F - 59F = 41F, adjusted for R-134a, 41F/14 = 2.92F.

Kuehl delta with water was, 100F - 55F = 45F, adjusted for R-134a, 45F/14 = 3.21F.

OEM R-134a delta = 2.71F

Kuehl R-134a delta = 3.21F

3.21 - 2.71 = 0.50F

In layman terms the Kuehl evaporator offers less than 1% difference in heat transfer efficiency.


...

I really have no skin in this game, I don't own a Griffith's system but please stop making this claim. This calculation is totally invalid. You cannot use this method to calculate the efficiency of a heat exchanger. Latent heat is amount of heat released as gas condenses at constant temperature (or absorbed as liquid evaporates) and the ratio of the vallues for 2 different chemicals is totally unreleted to heat transfer efficiency. The efficiency is only related to the amount Btus that can be moved from the fluid on one side of heat exchanger to the other. This is a function of the surface area of the heat exchanger and the heat transfer coefficients of the materials involved. Latent heat has nothing to do with it.

[brads911sc]

Everything wwest says is bogus.

[wwest]

Originally Posted by Barrpete

I really have no skin in this game, I don't own a Griffith's system but please stop making this claim. This calculation is totally invalid. You cannot use this method to calculate the efficiency of a heat exchanger. Latent heat is amount of heat released as gas condenses at constant temperature (or absorbed as liquid evaporates) and the ratio of the vallues for 2 different chemicals is totally unreleted to heat transfer efficiency. The efficiency is only related to the amount Btus that can be moved from the fluid on one side of heat exchanger to the other. This is a function of the surface area of the heat exchanger and the heat transfer coefficients of the materials involved. Latent heat has nothing to do with it.

Then why not bless us with the correct method of relating the heat transfer charactoristics of (liquid) water vs R-134a as a refrigerant gas..??

But doesn't the latent heat value/number correlate to heat transfer charactoristics of a "chemical".

[wwest]

Originally Posted by SilberUrS6

Oh, now it's about DISCOMFORT, and not the absolute temperature of the interior. Another moving of the goalposts by wwest.

And to think that ANYONE could be discomforted by the stock 911 AC system.

LMAO. Heck, even with Griff's stuff, my car is acceptable. I think I spent exactly the right amount of money, LOL.

WAIT! I'm supposed to have buyer's remorse, right? The only remorse I have is that I had to get filthy to change out the stuff.

Maybe this will help you understand..

https://en.wikipedia.org/wiki/Thermal_comfort

[Barrpete]

Originally Posted by wwest

Then why not bless us with the correct method of relating the heat transfer charactoristics of (liquid) water vs R-134a as a refrigerant gas..??

But doesn't the latent heat value/number correlate to heat transfer charactoristics of a "chemical".

1. The proper equation is Q = UA ΔTm

2. No.