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1. (WO2018041715) PLATE HEAT EXCHANGER FOR SOLAR HEATING

Pub. No.:    WO/2018/041715    International Application No.:    PCT/EP2017/071346
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 25 01:59:59 CEST 2017
IPC: F24J 2/20
F28F 3/04
F28F 3/12
Applicants: ALFA LAVAL CORPORATE AB
Inventors: SJÖDIN, Per
NILSSON, Mats
Title: PLATE HEAT EXCHANGER FOR SOLAR HEATING
Abstract:
Plate heat exchanger (1,1') for solar heating comprising a plurality of channels (4) extending between an inlet (5) and an outlet (6) for conducting a heat transferring fluid. The plurality of channels (4) are defined between a first plate (2) and a second plate (3), the first and second plates (2, 3) being formed by stainless steel. Each of the plurality of channels (4) has a single-curved extension between the inlet (5) and the outlet (6) as seen in a plane A corresponding to the major surface extension of the first and second plates (2, 3). Each of the plurality of channels (4) has along at least a portion of its longitudinal extension a triangular or a chamfered triangular cross-section or a parallelogram or a chamfered parallelogram cross-section. The side walls (10) of two adjacent channels (4) define an angle α corresponding to, or smaller than, 100 degrees and more preferred smaller than 90 degrees.