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  1. akr768

    Discharge conditions for a radial compressor

    I'm new to rotary type compressors. I have a radial compressor prototype with the impeller diameter of about 5 cm (yes, it is a small machine). Based on the known inlet conditions and compressor performance characteristics, the calculated pressure and temperature rise across the compressor is...
  2. akr768

    Develop head vs flow for a radial compressor

    I have the characteristic curves such as head coefficient vs flow coefficient and flow coefficient vs compressor efficiency. I would like to develop a head (or deltaP) vs flow rate curve mathematically, ultimately determine the discharge pressure. The compressor is not an off-the-shelf item, so...
  3. akr768

    Typical superheat and subcools for R134a based air-conditioning unit

    We have a residential R134a air-conditioning system coupled with a R134a based heat engine. The engine and the compressor are mechanically coupled. Based on our tests, the cooling output produced is about 0.07 kW (air side) and the system efficiency is about 2% (at 35 C outdoor temperature). We...
  4. akr768

    Appropriate pump for ORC coupled with AC system

    We have a small-scale ORC system (less than 3 kWe)that is powering the AC loop where the working fluid in both loops are R134a. The ORC is powered by electrical water heater. Upon testing the system, our hypothesis for very low thermal output (or system efficiency about 2%) is low mass flow rate...

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