Abstract: A liquid heating system and heat exchangers therefore are disclosed. Each heat exchanger comprises a right heating chamber having a right input port and a right output port, and a left heating chamber having a left input port and a left output port. A heating circuit is configured such that circulating heated supply fluid through the heating circuit heats target liquid present in the heating chambers. The system includes a plurality of heat exchangers including a first, a final, and a plurality of middle heat exchangers. The right and left heating chambers are connected such that target liquid flows into the right input port of the right chamber of the first heat exchanger and through each right chamber to the left chamber of the final heat exchanger, and then through each left chamber and through the left output port of the first heat exchanger to a hot liquid discharge.

Abstract: A heat transfer system having a flexible surface member having a first side and a second side, forming a heat transfer surface, and two or more thermal conduits, spaced apart and extending across a portion of the heat transfer surface, the two or more thermal conduits adapted to receive a thermal media to form a heat source (heating) or heat sink (cooling) across the heat transfer surface. The flexible surface member may have a plurality of edge regions, the two or more thermal conduits extending between edge regions, such as adjacent edge regions or opposing edge regions. The flexible surface member may have a plurality of corner regions, the two or more thermal conduits extending between corner regions, such as adjacent corner regions or opposing corner regions.