Heat exchanger II

A heat exchanger comprising a stack of mutually spaced apart plates separated by respective spacings therebetween, wherein alternate spacings respectively provide a flow path for a first fluid, hereinafter the first fluid flow path, and a flow path for a second fluid, hereinafter the second fluid flow path, the heat exchanger further comprising a first header and a second header, the first header for inflow of the first fluid and the second header for outflow of the first fluid, wherein respective cells are formed by opposed pairs of the plates, the spacing between the plates of these pairs constituting all or part of the first fluid flow path, and the spacing between the respective cells constituting all or part of the second fluid flow path, the first and second headers being connected to the stack, wherein at a first end of the first fluid flow path the first header is connected to the stack by flexible tubular ducting in the form of metallic tubes which connect each cell with said first header, the ducting providing fluid flow between the cells and said first header, as well as a mechanical connection therebetween which maintains strength and yet is able to flex by virtue of being arranged to follow a tortuous path, the flexibility of the ducting permitting independent flexing of cells relative to said first header during heat exchanger start-up and operation, wherein the cells are also connected to said first header by at least one support member, the at least one support member not conveying fluid and comprising a joint that enables relative movement between said first header and the respective cells, with at least one degree of freedom.