The liquid heat exchangers we have built and patented are more efficient than the currently used “snake-type” models by 3,5-6 times (refer to the diagram №1) details »».
In the existing and newly designed heat exchanger equipment for liquids, to intensify heat transfer, artificial turbulization of a heat-transfer agent is used with the application of rod-like, intrachannel and surface intensifiers having special-shape turbulence stimulating inserts or bundles of smooth and rough tubes of even or different diameters or tubes of a variable cross-section having different configurations: cylindrical, conical, conical-cylindrical, etc., exposed to a transversal flow. Said variants are hard to be produced for requiring a lot of special equipment. In our structure of a liquid heat exchanger, the turbulization of the flow inside the heat exchanger is much higher thanks to our patented technology for manufacturing channels that enables to rise the heat transfer ratio by 2 times, with a lower fabrication cost compared to generally known welded constructions of heat exchangers, often called “snake-like”.
Our air radiator provides, for the same air consumption and the same heat load as for a pin radiator, a 2.15 to 6.92 times higher (refer to the diagram №2) temperature difference between the inlet and the outlet, which enables us to suggest innovative technical solutions for many fields:
- - cooling-off electronic equipment for telecommunications (use of individual systems for thermoelectric cooling), individual cooling-off for compartments with equipment requiring rather low temperatures; details »»
- - various thermoelectric units for cooling and freezing;
- - solutions providing for a comfortable microclimate, necessary to professionals in the field of air conditioning and to those dealing with air dehumidification, as well as to army units and to humanitarian organizations in need of mobile climatic stations; details »»
- - the collector of moisture from the air
- - technical solutions enabling to reduce the size of existing radiators for internal-combustion engines; details »»
The use of a combination of an air L heat exchanger and of a liquid one providing for a higher flow turbulization thanks to a patented technology of manufacturing the channels can enable to decrease at least by 2 times the radiator surface area in an internal-combustion engine, together with a considerably more simple process of its manufacture, while the use of a liquid heat exchanger with a thermoelectric module to cool the fuel decreases the fuel tendency to detonate and improves simultaneously the engine efficiency.
- - technical solutions enabling to build an alternative air-conditioner for motor-vehicles; details »»
The application of individual liquid heat exchangers providing for a guaranteed thermal contact with an exhaust manifold enables to use absorption cooling units for air conditioning in a car cabin instead of more economical compressor units consuming 3 to 8 kW, thanks to some additional fuel consumption. Absorption cooling units having various heating devices are well optimized and are produced for railroad cars and for ships. The absorption coolers are inferior to the compressor ones in efficiency but in the case of using “free” heat, this reason does not exist, and, what is more, the exhaust gas temperature grows lower, making said gas less toxic.
- - development of systems for a spare electric power supply on the basis of thermoelectric elements and heat exchange systems; details »»
One more direction for a possible application of the main advantages of thermoelectric generators such as a long life, a practically unlimited shell life with full availability for service at any time, no need for any special maintenance, a high reliability of work, stability of parameters, no risk of short-circuits or idle running, a full silence in operation due to the absence of moving parts, is their use as a completely autonomous emergency source for nuclear power plants (NPP), besides backup electric power lines, that is able to generate electric energy while the reactor generates heat. In our opinion, if the Fukushima nuclear plant (in Japan) had a presently described emergency autonomous power supply, any backup electric line breakages could not result in such a large-scale tragedy. Here described autonomous power plant can find application on sea ships the power plants of which are made on the base of nuclear reactors. An autonomous power plant will provide power for the security and control systems while the nuclear reactor generates heat.
- - laser units;
- - thermal-to-electric energy conversion details »»;
The use of individual liquid heat exchangers with a higher flow turbulization or the use of air L heat exchangers to cool the cold junctions of thermoelectric modules providing for an increased temperature difference, the hot junctions of which are in contact with the exhaust manifold, will enable to build a thermoelectric generator, easy to manufacture and generating electric energy without fuel consumption. Since the electric power generated by a Peltier module is proportional to the square of the difference of temperatures between the junctions, all the above described can find application in thermoelectric generators used in homes with various heat sources.
- - thermal energy-to-cold conversion.
Natural (free) convection. The experiment showed:
At a heat load of 9 Watts distributed on identical surfaces (40х40 mm) of tested heat exchangers having the base thickness of 3 mm (our L heat exchanger and a known rod heat exchanger). At the ambient temperature of 21oC, in the case of our L heat exchanger and of the rod heat exchanger, the temperature sensors being glued between the heat sink elements of both heat exchangers tested, our L heat exchanger showed a temperature 19 degrees lower than that of the rod heat exchanger.
Explanation for the diagrams:
- 1) Liquid heat exchanger with special channels (short designation SC, the diagram color is blue), designed by LEONARDA
- 2) Liquid "snake-like" heat exchanger short designation SL, the diagram color is green), finds a wide use in industry
- 3) While testing heat exchangers, the electric resistance heaters were attached (at equal heat load) to the lower surfaces of the heat exchangers with the surface of 16 cm2. A part of heat energy escaped to the environment and was not transmitted to the heat flow carrier.
Diagram 1. Difference of the higher efficiency of the heat with special channels compared to that of a "snake-like" heat exchanger from the flow rate of a heat carrier
Dependence of the efficiency between heat exchangers with special channels and "snake-like" heat exchangers at equal heat load and at the surface 16 cm2
Dependence of the hydraulic resistance between heat exchangers with special channels and "snake-like" heat exchangers at equal heat load and at the surface 16 cm2
Diagram 2. Diagram of temperature diference for a pin radiator and for a heat superconducting radiator