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Fruit Trader

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Posts posted by Fruit Trader

  1. 2 hours ago, tomazbodner said:

    I was reading on Kicks how it works, and that's not really a hybrid. Works like a diesel electric train.

     

    It's an interesting topic. There has been much discussion about the efficiency of series hybrid (train locomotive style) compared to a parallel system where combustion engine and electric motor are mechanically connected to the final drive.

     

    The Edison Motors story and their diesel electric truck is a good example of where efficiency arguments have been started.


    There is a lot of misunderstanding and twisted facts surrounding the Nissan E-Power system. I guess most of this comes from the army of online motoring journalists.

    A tear-down video is the best way to understand how this system works and why there are many questions raised about its efficiency and energy losses through the various power stages. 

     

     

     

    • Like 1
    • Thanks 1
  2. 3 hours ago, Crossy said:

     

    Wire it like the dotted line after removing the cap. and reverse should be available.

     

    I'd test first without removing the cap to ensure you're good like that. So just motor L and N to W and V.

     

     

    Capacitor-Run Single Phase Induction Motor | Download ...

    Motor should look like this inside, remove the cap and connect U to the aux winding.

     

    If it goes the wrong way, swap V & W.

     

    The OP might be confused when opening the motor because the spec plate mentions separate start run capacitors. There will be a switch facility somewhere on the motor. 

    Not a problem trying a VFD on this motor but best he is aware of the increased complexity under the covers.

     

     

    Option 1

     

    sp1.jpg.3b024ca98b4be44a6c9d025a56bd9338.jpg

     

     

     

    Option 2

     

    sp2.jpg.a2f845028353b76b6cf16c8284107367.jpg

    • Like 1
  3. 38 minutes ago, tomazbodner said:

    How could an aircon compressor in a room that's not sold (so aircon not running) blow up and catch fire? Daikin uses R32 gas, the most advanced coolant, and very difficult to ignite (see video below).

     

    Only way this could happen would be sustained fire inside compressor box to allow gas to be trapped there long enough to ignite. But what could cause a sustained fire?

     

    I'm really looking forward to see what the investigation comes up with.

     

    How could an AC air compressor blow up and catch fire in a room that's not occupied. Maybe a staff member left the AC switched on.

     

    Clue - A housekeeper in the building said she heard a loud explosion.

     

    If an AC compressor suffers from extreme overheating there's a chance it will vent or explode. What happens to the hot oil and surrounding materials is up to the gods. 

  4. 2hp brushless DC motor/pump with mppt controller, no battery required electronic controller handles the start load.


    There are many specs for these pumps to suit various panel arrangements and voltages.


    Example spec :-

    Output 190V 1500W.

    Solar panels open circuit voltage <430V power >1900W.

    Approx cost excluding panels 12-14k Baht.
     

    • Thanks 1
  5. 8 hours ago, Retfed50 said:

    In my opinion,due to the lack of consistency in water supplies here, brass is the better option. We have well water, and even with the water treatment system, it plays havoc with anything metal. Even stainless rusts, which brass will not.

     

    Some of the brass faucet inserts in areas that use our well water have suffered from dezincification which causes the insert body to become brittle and fail. The solution was to replace these inserts with stainless steel.


    Below photo shows a brass insert that has become brittle and cracked alongside a stainless steel replacement from China. We have machined down the spindle of the replacement to fit the faucet lever. It can be difficult finding inserts that are an exact match.

     

    insert.thumb.jpg.b58f74dec0c863cb71a691374902f775.jpg

    • Thumbs Up 1
  6. 55 minutes ago, Muhendis said:

    The fact that the car uses batteries is not relevant in my opinion. I think the blame lies with the computer.

     

    And if bugs remain in software the right set of events can lead to failure.

     

    Electrically, ICE vehicles have the ABS pump and control module to handle. EV's throw regenerative braking into the same mix adding one more control function to the braking system logic.

  7. 14 minutes ago, vinny41 said:

    Terrified M62 driver speaks out following claims Jaguar suffered 'electrical fault' as he was 'unable to brake'

     

    Drama unfolded after the Jaguar I-PACE vehicle, according to police, malfunctioned on the eastbound carriageway of the motorway towards Eccles yesterday afternoon (Wednesday). The vehicle, it is claimed, reached speeds of 90mph before police used specialist tactics to ram it and bring it to a halt.

    https://www.manchestereveningnews.co.uk/news/greater-manchester-news/m62-driver-electric-jaguar-brakes-28770576

    There was a similar case a few months ago with a MG ZS EV also unable to brake

     

    Easy now, the confused emojis are already running rife.

     

    You got to keep it real simple.

    • Like 1
  8. 2 hours ago, VinnieK said:

    Three days already and zero food or water.

     

    We have many stray cats in our compound where in the past some have survived what looked like a severe case of flu.

     

    Very important the cat is drinking, if it refuses force using a syringe. Remove any discharge from around eyes, mouth and nose, keep in a quiet place away from other cats.

  9. A serviced apartment building near to us has banned EV charging in the car park located directly below the apartments at ground level. My brother-in-law who provides services to this building was asked to disconnect several wall sockets in the parking area and erect warning signs. The building insurers were communicating with the owners about this along with complaints about trip hazards created by cables charging electric scooters.

     

    It's quite understandable that insurers would want to reduce risk from vehicles parked within a building structure knowing that some are extremely difficult to extinguish when on fire. I guess risk assessment for EV's on charge is still in its early stages.

    • Agree 1
  10. Above ground tank cleaning

     

    Our product wash supply tanks are cleaned three times a year using strong chlorine and brush. To make this an easy task all pipe connections are fitted with barrel unions which allow the tank to be quickly disconnected tipped on its side for cleaning and upside down to drain and rinse. 

     

     

    PVC inline barrel union.

     

    union.jpg.bd7387d06e11fef4b436dce2cf43b50e.jpg

  11. 1 hour ago, sandyf said:

    Pressure vessels that are "open" are no longer pressure vessels.

    On the basis you haven't explained it very well I will take your word for it. In the tech manual the item is referred to as the air control assembly and it was my understanding the bladder did something similar with air in the tank.

    I have a multitude of pumps but never come across one with a bladder, but going by the rhetoric on here they must be very common.

     

    By open vessel I am referring to there being no isolation (bladder) between the compressible air pocket and the water.

     

    The air control assembly as it is called injects air into the tank. The item is made up of several components which is why it is called a control assembly. Control is used in the naming of this device because it keeps the level of air in the pressure tank under control. 

     

    The compact house pump range use pre charged pressure vessels with isolation bladder rather than a large tank with air pocket below the pump.

     

     

    Example pre charged bladder tank used on compact pumps. 

     

    presstanks.jpg.eb42218aa4e6f7044e301b830eb644bd.jpg

     

     

  12. 1 hour ago, sandyf said:

     

    There is no bladder in the tank anymore.  The function has been replaced by a control unit, funny looking item near the pressure switch( Item 16 on the drawing". Had to replace that on a Mitsu pump.

    105 WaterPump.jpg..jpg

     

     

     

    Pumps with open pressure vessel have never had bladders. Item 16 on the diagram is the air injector which maintains the pressure storage air pocket in the vessel.

    Each time the pump starts a diaphragm in the injector uses pump pressure to inject a shot of air.

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