Patents Assigned to AquaCal
  • Heat exchanger with two-stage heat transfer
    Patent number: 6499534
    Abstract: A tube and shell heat exchanger is formed by a shell enclosing an internal sidewall which in turn receives an internally located flow controller outer and inner heat exchange cavities are formed between the outer shell and the internal shell and the internal shell and the flow controller, respectively. Helical convolutions of the conduit are provided in each of the heat exchange cavities for counter concurrent flow of fluid medium from one cavity to another. A bottom wall closes off the outer shell.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: December 31, 2002
    Assignee: AquaCal
    Inventors: Jeffery Tawney, Eric Bright