how much hp does a/c use?

Discussion in 'SRT Hellcat General Discussions' started by Ray Hunsaker, Jul 1, 2015.

  1. Ray Hunsaker

    Ray Hunsaker Silver Member Hellcat Car Club Gold Supporting Member HCC Charter Member

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    any body have a thought on how much horse power it takes?
     
  2. Smog Dog

    Smog Dog Silver Member

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    Don't know what is uses, but if it's like the Viper, the computer shuts if off during WOT.
     
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  3. Tammie

    Tammie SRT Hellcat Moderator Staff Member Gold Supporting Member

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    If you figure it's not too different in capacity from an average window air conditioning unit in your house, and one of those typically takes about 13-15 amps at 120 volts, then that would be about 1500-1800 watts, or about 2 horsepower.
    *not my quote, I found it on the internet so it has to be true! LOL
     
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  4. Paladin06

    Paladin06 Have Guns Will Travel Staff Member Hellcat Car Club Gold Supporting Member

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    I read:

    Revelation 4: IHI Turbo America (formerly Warner-Ishi) manufactures the entire 80-pound supercharger—aluminum housing, aluminum rotors supported by steel shafts, and the twin air-liquid intercoolers—in a Shelbyville, Illinois, plant. A one-way clutch on the blower’s input shaft prevents the high-inertia rotating components from back-driving the engine during lift-throttle conditions. More potent than a street sweeper, this blower can move 30,000 liters of air per minute. IHI earned this business in a fly-off against two other supercharger suppliers.

    Revelation 5: Spinning the twin-screw IHI supercharger is a substantial engineering feat. Washers securing the 10-rib drive pulley to the crankshaft are infused with industrial diamonds to provide sufficient clamping friction. Driving the blower 2.36 times crankshaft rpm to deliver 2.4 liters of air per revolution consumes 80 horsepower. The asymmetrical supercharger rotors spin at different speeds thanks to their interlocking configuration and 3:5-ratio phase gears at the back of the blower. At the 6000-rpm engine horsepower peak, the rotor spun by the belt from the crankshaft turns at 14,160 rpm while its mate spins at 23,600 rpm.

    Revelation 6: Noise generated by the supercharger is engineered to please the obvious Hellcat users: individuals with a stout performance bent. During idle and part-throttle driving, the bearing, gear, rotor, and airflow ruckus falls below the audible threshold. Kick the gas and you hear a subtle whine mixed in with the louder intake and exhaust sounds. No artificial noise is added via the car’s sound system.

    [​IMG]

    The rotors are coated with a Teflon material that helps maintain the tight clearances needed to prevent airflow leaks. In the event of accidental contact, the soft coating abrades instead of the aluminum rotor material. Gears and rotor bearings are lubricated by a sealed-for-life splash system containing synthetic oil. Durability was proven by canting the blower at 47 degrees from horizontal and running it at different speeds and loads for 300 test hours.
     
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  5. 70Cuda

    70Cuda Yep, its got a HEMI

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    Probably won't matter so much on the street as the surface is not the best and you will lose traction. but under ideal conditions ( say at the track) would probably see a better result with it off.
     
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  6. 70Cuda

    70Cuda Yep, its got a HEMI

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    I ran my Viper at the Mopar Nationals with the A/C on. Car is triple black. Just to hot to sit there in line for 40 minutes for a pass. It was mostly for fun. Nothing really on the line.
     
  7. Tammie

    Tammie SRT Hellcat Moderator Staff Member Gold Supporting Member

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    They ask everyone to shut theirs off where I have been. Granted, that isn't a lot but I thought it has more to do with the car getting overheated than anything.
     
  8. Dubya

    Dubya Silver Member

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    It's about leaving condensation on the track.:D
     
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  9. Tammie

    Tammie SRT Hellcat Moderator Staff Member Gold Supporting Member

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    Ah! That's why they have porta potties close too. That makes so much sense now.
     
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  10. digdug33071

    digdug33071 SRT Hellcat Supporter Gold Supporting Member

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    Guys at the SRT experience at Miami Speedway said to leave the AC on as it uses less than 5 hp to run.
     
  11. B5 Blue

    B5 Blue Platinum Member

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    But when you forget using the HP calculator and my RT it is over 100 hp
     
  12. 70Cuda

    70Cuda Yep, its got a HEMI

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    they don't want them leaking water on the track
     
    Last edited: Jul 1, 2015
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  13. Aaron Vogel

    Aaron Vogel Silver Member

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    i left mine on when i was at MATS in Vegas, like someone else said under WOT the A/C is disengaged. It was nice, me in the car, radio on, ac on, relaxing, all these other guys in there cars, doors open etc trying to stay cool.
     
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  14. Aaron Vogel

    Aaron Vogel Silver Member

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    i left mine on when i was at MATS in Vegas, like someone else said under WOT the A/C is disengaged. It was nice, me in the car, radio on, ac on, relaxing, all these other guys in there cars, doors open etc trying to stay cool.
     
  15. LelandJim

    LelandJim Silver Member

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    SRT folks at MIS last week said 1 HP......
     
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