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Recent content by irafi

  1. irafi

    Designing domestic mini fridge

    I meant to say, a cooling load of 380W at 4C is the design point for the refrigerator. But the refrigerator must be capable of pulling down to -18C
  2. irafi

    Designing domestic mini fridge

    Once I have found the total system volume would I just use mass flow rate=rho*A*u with rho being the critical density of the refrigerator? or is there a more elegant solution? Sorry for asking such simple questions. If this is a trivial solution, would appreciate it if you could direct me to...
  3. irafi

    Designing domestic mini fridge

    How would you calculate the charge required from the mass flow rate? I would assume you would need to know the dimensions of the piping of the system etc, but I have not gotten that far into designing the product yet. I am thinking of using R-1234yf, but that has a maximum charge limit.
  4. irafi

    Designing domestic mini fridge

    Hi I need to calculate the rough design point for a domestic mini fridge. I have calculated the cooling requirement to be 400W, the evaporator temperature of -1C and a condenser temperature no higher than 50C. So far I have just done hand calculations to determine the compressor work required...
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