Evaporator and Refrigeration System Comprising Same

Abstract

The present application provides an evaporator, comprising: a housing; and a falling film tube bundle disposed in an accommodating cavity and arranged in columns, the falling film tube bundle comprising a plurality of heat exchange tubes, the centers of the heat exchange tubes in each column being arranged along a height direction, and the centers of two adjacent heat exchange tubes in adjacent columns being staggered in a width direction of the accommodating cavity; wherein the falling film tube bundle is configured in a way that among four adjacent heat exchange tubes in two adjacent columns, a minimum distance between outer surfaces of at least two heat exchange tubes in different columns is greater than a minimum distance between outer surfaces of two heat exchange tubes in the same column. In the present application, a flow rate of gas flowing among the corresponding heat exchange tubes is reduced by increasing the flow space of a refrigerant in the width direction W, so that a ratio of the gas phase Reynolds number Rev to the liquid film Reynolds number Refilm is reduced, and thus the heat exchange efficiency of the evaporator is improved.

Dependencies are inferred from the claim text.