Plate heat exchangers, in particular for absorption refrigeration systems

摘要

A plate heat exchanger provided in particular for absorption refrigeration systems with alternating solution channels and coolant channels is formed in two parts by means of heat exchanger plates consisting of two plate parts (15, 16) such that two adjacent juxtaposed, separate, however, exist in the flow channel between two plate front sides (V) Solution channel portions connected by an overflow opening and two adjacent coolant passage portions adjacent to one another are present in the adjacent flow channel. Each channel part is assigned inlets and outlets for the respective medium. Due to the overflow opening between the two solution channel parts, steam generated in one of the solution channel part functioning as an evaporator or generator can flow into the second solution channel part, which then has the function of an absorber or a condenser. As a result, with less space required, the expenditure on equipment and assembly costs can be reduced and the heat transfer capacity of the plate heat exchanger can be increased.