Cross for Sanden TRSA05

dpalombo on Thu September 30, 2010 1:02 PM

Hello,

I've head from a Sanden Rep that the TRSA05 scroll compressor is no longer in production. Does anyone know if there is a quality after-market replacement?

Can someone tell me what vehicles this compressor was designed into?

Thanks,
Dave

ice-n-tropics on Thu September 30, 2010 1:18 PM

TRSA05 was used in tiney Handa Asia car, don't know the one
How many do you need? I'm holding a new one.
hotrodac

-------------------------
Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy.
AMAZON.com: How To Air Condition Your Hot Rod

Edited: Thu September 30, 2010 at 1:20 PM by ice-n-tropics

dpalombo on Thu September 30, 2010 1:44 PM

I need about 1200 of them over the next 5 years....

ice-n-tropics on Thu September 30, 2010 2:07 PM

dpalombo
The TRSA05 scroll with imbedded oil seperator is a great compressor for high efficiency applications. It's also used in small volume aviation A/C.
The Denso scroll sold in Brazil is 45% larger swept volume and lower efficiency w/o oil seperator built in.
I've done some study of a smaller scroll design, approx. 30 cc displacement, but don't have a sponser.
What's your target displacement, rpm max, drive or clutch and volumetric & isentropic efficiency?
hotrodac

-------------------------
Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy.
AMAZON.com: How To Air Condition Your Hot Rod

dpalombo on Thu September 30, 2010 3:18 PM

ice-n-tropic,

We need a cooing capacity of about 4000W with a mechanical input power of 2500W or less. The minimum COP we need is 1.5 with 1.75 desired. I will be driving with an electric motor, so I need to minimize the amount of torque needed, but I can drive at any RPM, hence the need for a small displacement compressor.

Dave

ice-n-tropics on Thu September 30, 2010 4:54 PM

Dave,
The TRSA05 would need a little over 2000 rpm, depending on the suction pressure (based on evaporator temperature).
Matsushita quit making their tiney hermetic scroll so that is no longer a option.
Could be an electric car application.
School busses are looking at electric compressor drives due to some monster alternators and battery packs.
You could consider the present Honda Civic scroll TRSA07 if you can slow it down without too much motor overweight. Another option is to control the suction pressure to limit the input power and keep a light weight high speed motor. Suction pressure should not go below approx 5 to 8 psi to prevent overheating and thermal protection switch nuisance cycling. A oil cooler may be necessary with a suction pressure regulator. Must be tested.
hotrodac

-------------------------
Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy.
AMAZON.com: How To Air Condition Your Hot Rod

dpalombo on Thu September 30, 2010 5:28 PM

Ideally, I would find a way to run a compressor at around 7000 RPM, to achieve 4KW of cooling capacity. In essence I am trying to replicate the Prius compressor. Are there smaller compressors out there?

Dave

ice-n-tropics on Fri October 01, 2010 6:30 PM

The newest Prius compressor appears to be 18cc displacement and does 3.4 W cooling at 7500 rpm with the 200 volt motor.
What the world needs now is a scroll 18cc to 30 cc.
hotrodac

-------------------------
Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy.
AMAZON.com: How To Air Condition Your Hot Rod

dpalombo on Sat October 02, 2010 7:36 PM

The problem with Denzo is that they won't sell a compressor for a Military Application.

ice-n-tropics on Sun October 03, 2010 4:01 PM

Dave,
Sanden won't sell for military either if HQ in Japan has to get involved in it.
I've done quite a bit of design/test for scroll military land (and air) applications at 130 F ambient with 28.5 volt compressor drive motors and also belt drives. Had to change sweaty clothes several times a day. Worse than testing A/C in Sin City or the Valley of Death, CA.
TRB can give you my # if you want assistance.
hotrodac

-------------------------
Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy.
AMAZON.com: How To Air Condition Your Hot Rod

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