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Type: Posts; User: Dreyfus

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  1. All good points. However if a ball valve can work...

    All good points. However if a ball valve can work in refrigeration than this design should be fine. If it's a question of tolerances than that is just a matter of manufacturing precision and cost. I...
  2. Thanks for those comments. I do appreciate them....

    Thanks for those comments. I do appreciate them. I just didn't quite understand the last point about cost to upscale. Do you mean the cost to increase the size of the valve or to apply it elsewhere?...
  3. If you wanted to cool the fan you could have...

    If you wanted to cool the fan you could have found a double bladed version or add a shaft and blade. Put a heat sink on the fan body and duct the exhaust outside. The front blades would be the normal...
  4. And yet another caveat! I had originally...

    And yet another caveat! I had originally believed that I could daisy chain these valves together i.e. have 1 valve with its 2 outlets connected to 2 other valves so that the final 4 outlets could be...
  5. I should add that this valve has an interesting...

    I should add that this valve has an interesting property: if the currently flowing outlet is sufficiently blocked then the nonflowing outlet will automatically flow. I had thought that this could act...
  6. Does This New Valve Design Have any HVAC Application?

    I have built and tested a new kind of flow operated alternating valve. It's existing competition is this Galcon manufactured product:

    https://www.dripworks.com/galcon-alternator-valve

    That...
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    I have built a large scale model of the crank...

    I have built a large scale model of the crank system and powered it using 2 battery drills just to test the feasibility of control. Obviously one simulates the compressor motor and the other the...
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    I think Danfoss have been selling inverter based...

    I think Danfoss have been selling inverter based recips for a long time-mostly for the RV, boat and off grid markets as fridge/freezers. They are widely regarded as expensive but that may be because...
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    We all know that inverters are more efficient but...

    We all know that inverters are more efficient but that comes at a price. There may be markets where that price in unacceptable for many and where their usage patterns can't make up for the initial...
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    Thanks. In my area rotary split systems up to...

    Thanks. In my area rotary split systems up to 11KW seem to be the only things offered by installers for residential a/c.
    Here, humidity is very high in the wet (northern australia) and a/c is not...
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    Sorry I haven't been monitoring this forum. You...

    Sorry I haven't been monitoring this forum. You could be right. I am a novice at the advantages and disadvantages of compressor mechanisms and only base my understanding on what I have read. My...
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    You have a good sense for the concept however u...

    You have a good sense for the concept however u should note that most variable compression approaches in internal combustion engines vary the displacement by only small amounts since the range of...
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    New Method for Compressor Load Modulation

    I would be interested in comments relating to the potential pitfalls of this innovation and next steps.

    Essentially the aim is to build a compressor with an efficiency similar to scroll...
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