Heat exchanger for high prandtl number fluids

Abstract

A fluid heat exchanger including a channel for passing a first fluid therethrough arranged along a primary axis including at least two segments of a first flow pattern, wherein a length of at least one segment being set in relation to a hydraulic diameter and a Prandtl number of the first fluid, and a first pattern flow disruptor interspersed between each of the segments of the first flow pattern configured to reduce a pressure loss of the fluid flow along the channel.

Description

BACKGROUNDTechnological Field[0001]The present disclosure relates to a heat exchanger, and more particularly to a heat exchanger for a high Prandtl number fluid.Description of Related Art[0002]A variety of devices are known in the heat exchanger area. However High-Viscosity / Prandtl-number fluids such as oils or glycol solutions result in poor heat transfer and high pressure drop. Surface augmentations are often used to enhance heat transfer; however, result in even higher pressure drop.[0003]The conventional methods and systems have generally been considered satisfactory for their intended purpose. However, there is still a need in the art for heat exchanger having improved heat transfer capabilities. There also remains a need in the art for such heat exchangers and components that are economically viable. The present disclosure may provide a solution for at least one of these remaining challenges.SUMMARY OF THE INVENTION[0004]A fluid heat exchanger includes a channel for passing a ...

AI Technical Summary

Benefits of technology

This patent is about a heat exchanger that improves the transfer of heat between fluids. The heat exchanger has two sets of channels that hold the fluids. The first set of channels has segments that create a smooth flow of the fluid and reduce pressure loss. Between these segments, there are a series of disruptors that change the flow direction and make it more turbulent. This creates a thermal boundary layer between the fluid and the surface of the channel, which is thinner than a layer of fluid pushed by momentum. This reduces the heat transfer area and allows for faster heat transfer between the fluids. The length of the segments and the design of the disruptors are determined based on the expected flow behavior of the fluids and the desired heat transfer rate. The heat exchanger is designed to be efficient and compact, with good heat transfer performance. It can be used for industrial applications such as power generation.

Problems solved by technology

However High-Viscosity / Prandtl-number fluids such as oils or glycol solutions result in poor heat transfer and high pressure drop.

Surface augmentations are often used to enhance heat transfer; however, result in even higher pressure drop.

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