Page 311 - Теория кавитации

APPLICATIONS

Application 1. EXPERIMENTAL DETAILS WITH
A SPECIFIC VORTEX HEAT GENERATOR

Note: General scheme and basic elemental units of a vortex heat generator, designed by N.M. Revinov
project of D.A. Aubakir starting before 2014: [7]-[9]. The author expresses his sincere gratitude to his colleagues
Askar Abirov and Jumakhon Sharifov for organizing an independent examination of the demonstration
prototype VHG 2014 “Bride”!

Today vortex heat generator (VHG) thermoelectric equipment is the most environmentally friendly heat
source, because of a number of its unique technological characteristics and design features, which can mainly
be used in the autonomous heating system of various objects.
Technological and structural features of vortex heat generating device (VHGD):
- The device is environmentally friendly, there is no need to burn hydrocarbon fuels (coal, oil, gas);
- There are no heating elements;
- Electricity is used only to power the hydraulic pump drive;
- There is no need for water treatment;
- Can heat a liquid of any origin (water, alcohol, gas condensate, etc.);
- Unlike heat pump (HP), they do not require a low-potential (initial) heat source;
- Provides automatic maintenance of the temperature of the coolant in a given temperature range;
- Relatively simple design, small size and weight;
- Economical in operation and maintenance.
In addition, they are absolutely fire-safe due to the lack of fuel and combustion processes,
VHG can be distinguished three constructive types based on technology:
- Passive tangential;
- Passive axial;
- Active. (http://www.rosteplo.ru/Tech_stat/stat_shablon.php).
The statistical type of high-voltage engines are passive that do not contain moving parts in devices for
forming a fluid flow. They are differ in the nature of the flow entry into the working chamber - tangential (swirl,
working vortex chamber, brake device, outlet, overflow line) or axial (inlet, working chamber with narrowing
device, turbulizer, outlet).
The swirl is made in the form of a cochlea like supplying a stream of cold liquid from the pump to the
periphery of the cylindrical vortex chamber. The flow twists and moves to the axial outlet nozzle in the chamber,
it is braked by a special device at front. In the process of vortex motion and braking of fluid in the working
chamber, a zone of "collapse" is created, in which the fluid heats up and enters the outlet nozzle. Part of the hot
liquid can be removed to maintain the collapse zone from its entrance to the entrance through the overflow line.
Swirls can be performed with screw or spiral profiles of working chambers, with constant or tapering
nozzle sections, with one or more working chambers, with one or more tangential inlets, with inlets of the type
of vortex nozzles, etc. The working chambers of these heaters can be direct-flow, double countercurrent,
cylindrical, conical, of complex shape, etc.
The design of braking devices is also varied - from the bodies of flow to the bladed straighteners.
Passive axial VHG use various diaphragms with cylindrical, conical, slit-like or spiral holes, with one or
more holes, with axial or offset holes, with one or several successively installed partitions, etc.
Mixed type of heat generators are used, in which, both swirlers and diaphragms are used simultaneously
to increase the efficiency of work.
Active include VHG, in which the mechanical activation of the working fluid occurs as a result of the
impact on the fluid of moving activators - rotating, oscillating, or performing a complex movement.
The cold liquid supplied to the inlet nozzle VHG of the active type and twisted by a rotating activator,
accelerated, activated and heated. This occurs in the process of movement in the direction of a fixed braking
device, on which the flow is braked, is additionally activated and heated. Through the outlet hot liquid is supplied
to the consumer.
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