RU2334178C1 - Supersonic tube of temperature stratification - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: supersonic tube of temperature stratification contains separation chamber 1, external subsonic channel 2, internal supersonic channel 3, outlet nozzle 4 of supersonic channel, supersonic diffuser 5, outlet nozzle 6 of subsonic channel, supersonic nozzle 7, device 8 for whirling of supersonic dispersed flow in supersonic channel. As device 8 for whirling of supersonic dispersed flow, tape swirler is used.

EFFECT: increase of efficiency of temperature stratification method.

2 cl, 2 dwg

Description

The invention relates to industrial heat engineering, in particular to the creation of refrigeration and heating apparatus for separating a gas stream into cold and hot parts.

The closest installation of the same purpose to the claimed invention in terms of features is a Leontief pipe containing a separation chamber, an external subsonic channel, an internal supersonic channel, an output pipe of a supersonic channel, a supersonic diffuser, an output pipe of a subsonic channel, a supersonic nozzle (see Proceedings of the XIV School- a seminar of young scientists and specialists under the guidance of Academician A.I. Leontiev. T.1. M: Publishing House MPEI. 2003. S.33-36) and adopted as a prototype.

The reasons that impede the achievement of the technical result indicated below when using the well-known Leontief pipe adopted as a prototype include the fact that the use of a homogeneous gas stream in the Leontief pipe to implement the method of temperature stratification is not effective enough in comparison with the use of a dispersed stream as a working fluid and a device for swirling of a supersonic dispersed flow in a supersonic channel.

The essence of the invention is to increase the efficiency of the method of temperature stratification due to the inertial precipitation of particles of the dispersed phase of the dispersed stream on the wall of the inner channel and, as a result, additional cooling of the wall of the inner channel.

The technical result is an increase in the efficiency of the method of temperature stratification.

The specified technical result in the implementation of the invention is achieved by the fact that the supersonic pipe of temperature stratification contains a separation chamber, an external subsonic channel, an internal supersonic channel, an outlet pipe of a supersonic channel, a supersonic diffuser, an outlet pipe of a subsonic channel, a supersonic nozzle. The peculiarity lies in the fact that it contains a device for swirling a supersonic dispersed flow in a supersonic channel. A tape swirler is used as a device for swirling a supersonic dispersed flow.

The invention is illustrated by drawings, where

figure 1 presents the pipe Leontief;

figure 2 presents the basic design of the proposed supersonic pipe temperature stratification.

Information confirming the possibility of carrying out the invention with obtaining the above technical result are as follows.

The supersonic tube of temperature stratification contains a separation chamber 1, an external supersonic channel 2, an internal supersonic channel 3, an outlet pipe of a supersonic channel 4, a supersonic diffuser 5, an outlet pipe of a subsonic channel 6, a supersonic nozzle 7, a device 8 for swirling a supersonic dispersed stream in a supersonic channel 3 . As a device 8 for swirling a supersonic dispersed stream using a tape swirler.

The work of the proposed supersonic pipe temperature stratification is as follows.

A dispersed stream (gas stream with condensed particles) is fed into the separation chamber 1, where it is divided into two streams that are sent to an external subsonic channel 2, an internal supersonic channel 3, then, passing through the channel, a supersonic dispersed stream is directed respectively to the supersonic outlet pipe channel 4, passing through a supersonic diffuser 5. In turn, the subsonic dispersed stream, passing through an external subsonic channel 2, is directed to the output pipe of the subsonic channel 6. Supersonic dispersed stream passing through a supersonic nozzle 7 acquires a speed exceeding the speed of sound, characterized by the number M> 1. Next, the supersonic dispersed stream is twisted, passing the device 8 for swirling a supersonic dispersed stream located in the inner supersonic channel 3.

In a swirling dispersed supersonic flow, solid particles under the influence of centrifugal forces inertially fall onto the wall of the internal supersonic channel 3. Since solid particles moving from the flow core have a temperature lower than the gas temperature near the wall (in the boundary layer), therefore, the recovery temperature T _{r of the} dispersed the flow (compared to a homogeneous gas) will decrease. Thus, the heat flux between subsonic and supersonic dispersed fluxes increases. As a result, the efficiency of the method of temperature stratification in the device increases.

Claims (2)

1. A supersonic tube of temperature stratification, containing a separation chamber, an external supersonic channel, an internal supersonic channel, an outlet pipe of a supersonic channel, a supersonic diffuser, an outlet pipe of a subsonic channel, a supersonic nozzle, characterized in that it contains a device for swirling a supersonic dispersed stream located in the inner supersonic channel. 2. The pipe according to claim 1, characterized in that a tape swirler is used as a device for swirling a supersonic dispersed stream.

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