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  1. Giskard

    Buid-up pressure in a closed loop circuit

    IRstuff, that's correct, there is no check valve along the recirculation path of the closed circuit. Ferran
  2. Giskard

    Buid-up pressure in a closed loop circuit

    IRstuff, humm... I would expect that a pressure increase due to a water hammer would dissipate faster, (and maybe with some kind of pressure oscilation during the transient), but not for 15 or 20 min, with the pressure decreasing steadily and slowy... Ferran
  3. Giskard

    Buid-up pressure in a closed loop circuit

    25362 (Chemical), I'm afraid I will have to review a little my thermodynamics to clearly understand your point. Thank you very much! Do you know is this explanation would be very different if there is a little quantity of air dissolved in water? (let's say less than 1% - 2%) Thank you...
  4. Giskard

    Buid-up pressure in a closed loop circuit

    cawse001, I'm not really sure what do you mean by the fluid "draining back to the pump", because the system is a closed loop. Do you mean that there could be some kind of reversed flow through the pump? Thanks for comment! Ferran
  5. Giskard

    Buid-up pressure in a closed loop circuit

    KenRad, it is true that the tank is for make-up water and that the system doesn't have an expansion tank, (except for the small leak that the check valve could have to the tank), but we do have relief valves for avoiding the system to overpressurize, [actually, the pressure is not high enough...
  6. Giskard

    Buid-up pressure in a closed loop circuit

    We have a closed cooling circuit with a pump and a heat exchanger, (with a by-pass pipe to control the cooling). This circuit is basically closed, because, although the suction of the pump is also connected to an atmospheric tank, the pipe connecting to the suction pump has a check valve, (and...
  7. Giskard

    Detecting a small leakage in a water pipe

    Thank you very much, MJCronin and Stanier, I will explore those links to find the information I'm looking for. Giskard
  8. Giskard

    Detecting a small leakage in a water pipe

    Hello, Somebody has told me about a kind of "continuous detector" along a water pipe that is able to detect a small leakage at any point of it. It seems that the system consists of some kind of cable that is attached to the outside part of the pipe. Some of its properties change...
  9. Giskard

    Discharge of saturated steam into atmosphere

    I have doubt regarding the discharge of saturated steam under pressure (250 psig) into the atmosphere, after a rupture of a pipeline. Do I have to suposse that this process is adiabatic (isoenthropic) and that part of its enthalpy is transformed into kinetic energy, so the steam can condensate...

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