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  1. markcoleman

    Motor input power versus output cooling effect

    You guys are great. I understand the concept - the math is no problem. I started out as a millwright, and migrated into machine design, and so never studied thermodynamics. Now, I find myself in this odd position of overseeing the HVAC and reefer installation on a ship. Thanks again to you...
  2. markcoleman

    Motor input power versus output cooling effect

    Thanks very much, gentlemen. Forgive me, but I need to understand the concept in very basic terms before proceeding to the math: I understand you saying that the input energy is used to MOVE heat energy from one place to another. In this particular case, 248 kW of electrical energy is used to...
  3. markcoleman

    Motor input power versus output cooling effect

    Our organisation is installing (2) Carrier chillers on a ship,(30HXC310-PH3) with a gross cooling capacity of 1043kW each. The motor input power for each unit is 248 kW. What I can't get my head around is how we get more out than we put in - the fact that kW is used for both confuses me. I've...
  4. markcoleman

    Bromine injection - incoming drinking water line

    Thankyou, all of you, for your comments. I am tracking down where the directive came from originally within our organisation as to the use of bromine, as well as continuing to follow-up on the leads you've provided. - HudCameron - the unit would be used to initially fill the main fresh water...
  5. markcoleman

    Bromine injection - incoming drinking water line

    Tell me more about this "suppression of urges"! Never heard of that. It was the Superintendent of the Project who asked me to source the unit, because bromine apparently does a good job of disinfection, but doesn't create as many problems with corrosion. Mark
  6. markcoleman

    Bromine injection - incoming drinking water line

    I've been asked to source a bromine injection unit for an incoming 3" drinking water line for one of our ships. This is outside my field, and I can't seem to find a suitable unit on the internet. Any leads/suggestions? Thanks a lot, Mark Coleman Project Engineer, Mercy Ships Newcastle, England

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