Search found 51 matches

by ice-n-tropics
Sat Feb 03, 2018 9:32 am
Forum: Automotive Air Conditioning Forum
Topic: PAG-oiled components in former mineral oil systems. Corrosion Issues?
Replies: 7
Views: 205

Re: PAG-oiled components in former mineral oil systems. Corrosion Issues?

1) Residual R-12 is undesirable in A/C systems which have been retrofitted to R-134a and is evidenced by copper plating on steel parts and degraded oil. R-12 is miscible/absorbed into mineral oil and is only removed by lengthy deep vacuum or long atmosphere exposure. 2) Ester based oil was a better ...
by ice-n-tropics
Wed Nov 22, 2017 3:51 pm
Forum: Automotive Air Conditioning Forum
Topic: Two Condensers connected in series
Replies: 19
Views: 1904

Re: Two Condensers connected in series

Measured the air 6" off the asphalt in LV at 165F. OEMs often use belly pans these days to stop recirculated idle air. Bohica's PP experience for severe rare air and temp paramaters w/ turbo would be worth considering. So you are attempting 20 psi boost w/o a charge air cooler (CAC). Somewhat c...
by ice-n-tropics
Tue Nov 14, 2017 6:32 pm
Forum: Automotive Air Conditioning Forum
Topic: Two Condensers connected in series
Replies: 19
Views: 1904

Re: Two Condensers connected in series

As Bohica indicated the a CAC, a hefty charge air cooler, is pretty basic for your higher temp and pressure intake air if you expect that HP and any engine life. You said lower ram air is for the radiator which leaves upper ram air for CAC and then Radiator. But not enough height for condensers w/o ...
by ice-n-tropics
Tue Nov 14, 2017 11:45 am
Forum: Automotive Air Conditioning Forum
Topic: Two Condensers connected in series
Replies: 19
Views: 1904

Re: Two Condensers connected in series

This is not about the surface area of the condensers, but of the refrigerant tube internal restriction, e. g., for a 3/8" tube fabbed condenser: entry could be 2 parallel 3/8" tubes throughout. The second condenser could be 2 parallel tubes entry and half way a transition to a single 3/8&q...
by ice-n-tropics
Tue Nov 14, 2017 11:17 am
Forum: Automotive Air Conditioning Forum
Topic: Two Condensers connected in series
Replies: 19
Views: 1904

Re: Two Condensers connected in series

I fabbed a dual condenser, supped up A/C'd Humvee. Condenser Basic Design Principals: A single condenser installation can be analyzed as 3 heat dissipators in series. 1) Initial heat disippator #1: Large internal flow flow cross sections for SENSIBLE heat transfer of superheated high vevocity gas on...
by ice-n-tropics
Tue Oct 31, 2017 4:00 pm
Forum: Automotive Air Conditioning Forum
Topic: Printed a Shaft Seal Installer Tool on my 3D printer
Replies: 10
Views: 1978

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

CC Creator, Wish I had my snow cycle pictures to post. Centrifugal clutch with variable diameter sheaves to a jack shift and chain drive to rear axle with monster lightened sprocket. Wide Terra tires to plow through the CO snow high country during hunting season. All aluminum fabed frame (argon gas ...
by ice-n-tropics
Sun Oct 29, 2017 6:54 pm
Forum: Automotive Air Conditioning Forum
Topic: Printed a Shaft Seal Installer Tool on my 3D printer
Replies: 10
Views: 1978

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

Diametric,
We're just funning and staying friendly,hope there is no offense.
It was just a thought for reward for service to this free web site (services performed:
"ACKITS.COM" grill ornament for TIM
"BRADFORD HERRICK" emblem for bohica's Salt Flats cycle
Hotrodac
by ice-n-tropics
Mon Sep 11, 2017 1:25 pm
Forum: Automotive Air Conditioning Forum
Topic: A slightly differnt A/C system
Replies: 31
Views: 5560

Re: A slightly differnt A/C system

Thinking about air cooled ventilated rotors or solid CO2 to cool multiple dry clutch stack using disk break type rotors
by ice-n-tropics
Fri Sep 08, 2017 4:51 pm
Forum: Automotive Air Conditioning Forum
Topic: A slightly differnt A/C system
Replies: 31
Views: 5560

Re: A slightly differnt A/C system

7.2 for supercharger at 18
Above my pay grade but knew CR must be reduced. hope for your success
Are you going to Pikes Peak? I'll be there pretty soon
by ice-n-tropics
Fri Sep 08, 2017 5:53 am
Forum: Automotive Air Conditioning Forum
Topic: A slightly differnt A/C system
Replies: 31
Views: 5560

Re: A slightly differnt A/C system

Oil separator improves evaporator heat transfer
Oil (liquid or foam) insulates the warm evaporator tube from the cold refrigerant and negates any imaginary benefit.
hotrodac

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