A steam trap

Abstract

A steam trap 2 comprises an inlet 6 for receiving a flow of steam and condensate, and a collection chamber 4 to receive the steam and condensate and defining a collection volume. A valve 12 is provided in a wall of the collection chamber 4. A first sensor 8 determines the temperature of the steam at the inlet 6 and a second sensor 10 determines the temperature of the condensate in the collection volume. A controller 16 controls the valve to maintain a difference in the temperature of the steam at the inlet and the temperature of the condensate in the collection volume at a predefined subcool value setpoint. The controller 16 further determines the quantity of condensate discharged from the collection volume using a flow rate calculation for a choked flow of vaporizing liquid.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    US-2009199907-A1August 13, 2009Yehoshua AloniControllable and cleanable steam trap apparatus
    US-2010294377-A1November 25, 2010Yehoshua Aloni, Oren FahimipoorProgrammable steam trap apparatus

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