floating head heat exchanger

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The floating-head heat exchanger is a type of shell-and-tube heat exchanger; one of its end tube sheets is not connected to the shell, allowing it to move freely along the axial direction, which is why it is also called a floating head. The floating head consists of a floating tube sheet, hook rings, and floating head end caps; it features a detachable connection that allows the tube bundle to be removed from the shell. The advantages of the floating-head heat exchanger are: ◆ If there is a temperature difference between the heat exchange tubes and the shell, that is, when the shell or the heat exchange tubes expand, no thermal stress is generated ； ◆ The tube bundle can be withdrawn from the shell, facilitating cleaning inside and between the tubes. The disadvantages of floating-head heat exchangers are: ◆ Complex structure, large amount of material required, and high cost ； ◆ If the seal between the floating head cover and the floating tube sheet is not tight, internal leakage will occur, resulting in the mixing of the two media.