Search found 98 matches

by ice-n-tropics
Mon Sep 04, 2017 7:15 pm
Forum: Automotive Air Conditioning Forum
Topic: High side line temp from comp thru condensor and up to h block
Replies: 5
Views: 4216

Re: High side line temp from comp thru condensor and up to h block

Hey Tim, don't wet the condenser like I wetted the wooden floor boards in my MG when they caught fire from the hot exhaust in the boon docks. Stinks! Condenser can be considered 3 different heat dissapators: 1) Top is desuperheater at decreasing gas only temps with sensible heat exchange without cha...
by ice-n-tropics
Mon Sep 04, 2017 6:57 pm
Forum: Automotive Air Conditioning Forum
Topic: A slightly differnt A/C system
Replies: 31
Views: 20943

Re: A slightly differnt A/C system

sanden.com has TRSE07 scroll shown with 1KW at 1000rpm. Sanden semihermetic on Honda el vehicle has very small scroll. txv with low MOP (max operating pressure) to restrict mass flow during cool down may already be incorporated to limit power input. Isentropic efficiency for scroll at 1000 crpm is i...
by ice-n-tropics
Mon Sep 04, 2017 7:49 am
Forum: Automotive Air Conditioning Forum
Topic: A slightly differnt A/C system
Replies: 31
Views: 20943

Re: A slightly differnt A/C system

One concern is excessive oil quantity would increase running torque and reduce refrigerant mass flow. I was involved in copter application of scroll compressor where weight and el motor torque limits immediately rule out the 2 banger. Personally, I'd reduce weight 60% and increase isentropic efficie...
by ice-n-tropics
Mon Sep 04, 2017 7:21 am
Forum: Automotive Air Conditioning Forum
Topic: High Head and Low Vaccum Press. Still - New EXP Valve and Condensor
Replies: 1
Views: 2210

Re: High Head and Low Vaccum Press. Still - New EXP Valve and Condensor

The Delphi/GM scroll pressure spike phenomeon is under drag racing acceleration conditions with significant cool refrigerant mass accumulated downstream of the txv. The initial PRV refrigerant release due to fan failure could be part of the leak. Scroll comp develop some aluminum fines (gray refrige...
by ice-n-tropics
Mon Aug 21, 2017 10:52 am
Forum: Automotive Air Conditioning Forum
Topic: Printed a Shaft Seal Installer Tool on my 3D printer
Replies: 10
Views: 6911

Re: Printed a Shaft Seal Installer Tool on my 3D printer

Old school metal remover,
Nice sand casting and machining and branding
by ice-n-tropics
Mon Aug 21, 2017 10:11 am
Forum: Automotive Air Conditioning Forum
Topic: 1997 Sebring 2.5L A/C warm (details inside)
Replies: 12
Views: 7365

Re: 1997 Sebring 2.5L A/C warm (details inside)

One potential root cause is that the single discharge valve of the scroll compressor is not fully closing which allows warm high discharge gas in the rear discharge chamber to re enter the scroll area. This is referred to as wire drawing and could be foreign material under the valve seat, cracked di...
by ice-n-tropics
Wed Aug 16, 2017 10:26 am
Forum: Automotive Air Conditioning Forum
Topic: Printed a Shaft Seal Installer Tool on my 3D printer
Replies: 10
Views: 6911

Re: Printed a Shaft Seal Installer Tool on my 3D printer

Maybe we could have fun w/ your 3D printer w/ a grill escutcheon for Tim (ACKITS.COM) and 3D hood ornaments for bohica2xo's compact PU ('Yote) and my F150 (Boar head w/ tusks).
hotrodac
by ice-n-tropics
Tue Aug 15, 2017 11:58 am
Forum: Automotive Air Conditioning Forum
Topic: New Sanden squalling above 3000 rpm
Replies: 11
Views: 7223

Re: New Sanden squalling above 3000 rpm

Hi Mr. dogbone,
Since the A/C is unacceptable, I'll take it off your hands.
Mother Hubbard's hotrodac
by ice-n-tropics
Tue Aug 15, 2017 11:53 am
Forum: Automotive Air Conditioning Forum
Topic: GPD R4 scroll
Replies: 3
Views: 2924

Re: GPD R4 scroll

The Trailblazer cooling with a TRSA105 scroll was great over 30 mph and barely acceptable at idle.
The TRSA90 is aprox 15 % less displacement, so the drive ratio is the final solution.
hotrodac
by ice-n-tropics
Thu Aug 10, 2017 6:51 am
Forum: Automotive Air Conditioning Forum
Topic: New Sanden squalling above 3000 rpm
Replies: 11
Views: 7223

Re: New Sanden squalling above 3000 rpm

Smitties and underhood/firewall insulation might keep the rumble masked
hotrodac

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