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  • Users: adrian1906
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  1. adrian1906

    Effect of changing cooling fluid in heat exchanger

    I have a chilled water heat exchanger used to cool oil in a gearbox, From the energy balance equation: mdot_water * cp_water *deltaT_water = mdot_oil * cp_oil * deltaT_oil. Re-written, this becomes: (mdot_water/mdot_oil) * (cp_water/cp_oil) = deltaT_oil/deltaT_water =...
  2. adrian1906

    Science Fair Project - Battery Tester - Does common ground compromise results?

    I'm helping my son with his science fair project to compare the useful lives of different batteries. I helped him build a data logger using an Arduino micro controller board which as 6 Analog Input channels (the board is powered via the host computer's USB port). Originally, the circuit was...

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