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  • Users: cdcosta
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  1. cdcosta

    Can a gas engine be used to startup a larger electric motor?

    This is outside my area of knowledge... We have access to a large compressor and electric motor, which we want to use in an application. However, the motor is not "sized" for this particular application. The start time for motor coupled to the blower is greater than the manufacturers'...
  2. cdcosta

    Need sizing info for aircooled radiator

    We have a reclaimed radiator type oil cooler. We want to use it for a different application, but I have limited design information on the unit. Can someone direct me to a good resource for basic heat transfer calculations on fintube, air-cooled radiators? Thanks
  3. cdcosta

    Looking for formula to calculate number of holes in a Tubesheet

    Hello, I am looking for a formula to calculate the number of holes that can be drill on in a tubesheet, given the tubesheet diameter, tube size and tube hole pitch. I have come across this in the past, but just can't locate it in my reference texts. Thanks...
  4. cdcosta

    Having problems with a mass flow meter - Coriolis

    We have installed a Coriolis mass flow meter on a 2" process line. The Unit has been calibrated and is operational. Our problem is we have air bubbles entrained in the liquid. This is causing the density and hence the flowrate to be erratic. I am looking for ideas on how to minimize the...
  5. cdcosta

    What is the difference between an organic acid and an Inorganic acid?

    I am looking for coatings resistant to acids and have found many for inorganic acids, but only a few for organic acids. This may be a basic question but what is the difference between organic and inorganic acids? Why is one more corrosive?
  6. cdcosta

    Looking for a Moisture analyzer in a "wet" process air steam

    I have a process that takes Air from the athmoshpere and is compressed to 20 psig. Then steam is injected into the airsteam to "humidify" the stream before it enters the process. I am looking from a reliable moisture analyzer that can measure the moisture in the stream after the steam...

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