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Energy saving

Energy saving. Thermoelectricity. Electric energy. Cold. Thermal energy. Thermal energy. Heat exchange.

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Energy saving

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  1. Energy saving Thermoelectricity Electric energy Cold Thermal energy Thermal energy Heat exchange

  2. The Limited Liability Company “LEONARDA-SERVICE” was incorporated in the city of Moscow on January the 28th, 2005.“LEONARDA-SERVICE” LLC is an innovative company dealing with the design and manufacture of articles for medical purposes and of medical equipment. “LEONARDA-SERVICE” LLC carries out innovation developments in the field of energy saving, thermoelectricity, heat exchange, thermal-to-electric energy conversion. Andrey Vladimirovich REZVOV, “LEONARDA-SERVICE” LLC Director General, founder and owner of the Company, author of 28 patents.

  3. The Company is a resident of the Technopark “SТRОGINО”, aMoscow City Public Enterprise since 2010, on the base of an order by the Moscow City Government. LEONARDA-SERVICE Ltd. innovative company accredited by the Moscow Government. The Technopark “SТRОGINО” was established by the Government of Moscow with the support of the Russian Ministry for Economic Development in 2007. The Technopark represents an engineering area for innovative companies and provides comfortable conditions for doing business. The activity of the Technopark is performed in cooperation with the Science, Industrial Policy and Business Department of the City of Moscow, with infrastructure enterprises supporting innovative business and with other executive bodies of the City of Moscow.

  4. HEAT EXCHANGERS • As a result of comparative laboratory tests of heat exchangers widely used in the world and of the heat exchangers “LEONARDA” developed and manufactured by the “LEONARDA-SERVICE” Company, Moscow, the heat exchangers “LEONARDA” proved to be more efficient. • Air heat exchanger • The types of heat exchangers tested: • - pin-shaped (needle-shaped) - netted wire - LEONARDA (Air)

  5. Short description of the comparative laboratory tests of air heat exchangers Heat exchangers to be tested having electric heaters fixed to their base and powered from a voltage regulator (9.4 W) were placed into a leak-proof air pipe-line. The base size of all the heat exchangers was 40х40 mm, the height of heat dissipating elements being 22 mm. The heat exchangers were attached to the base of the electric heaters with the heat-conducting sealant “Elaseal 137-83”. The material used to manufacture 3 radiators was the same (aluminum). The tests were carried out with an anemometer, model ……….., with regard to all the requirements on the valuation of air flows at the inlet and the outlet of the anemometer.

  6. The LEONARDA air heat exchanger was 7 times more efficient than the other tested heat exchangers Diagram of temperature difference in a pin-like radiator and in a hyper-heat-conducting radiator

  7. Liquid heat exchanger • The types of heat exchangers tested: • - snake-shaped (a channel milled in zigzag in two halves welded together at their perimeters). The roughness of the surfaces to be joined where the channel are milled should be not less than 6 μm. – cylinder-shaped (cylindrical volumes of the inlet and the outlet are joined with 6 cylindrical channels of a lower diameter). - LEONARDA (Liquid)

  8. Short description of the comparative laboratory tests of liquid heat exchangers • The flow rate of the liquid was prescribed by means of measuring the time of filling with water a capacity of a determined volume. Temperature was checked at the inlet and the outlet with Honeywell Company detectors having the resistance of 1000 Ohms at 0 Celsius degree and the sensitivity 3.75 Ohms/oC. The heat exchangers to be tested having electric heaters attached do a base were powered from a voltage regulator (18.8 W). . The base size of all the heat exchangers was 40х40 mm. The heat exchangers were attached to the base of the electric heaters with the heat-conducting sealant “Elaseal 137-83”. The material used to manufacture 3 radiators was the same (aluminum). The tests were carried out with an ampere voltmeter, model ………..

  9. The LEONARDA liquid (special channels) heat exchanger is more efficient than the other tested heat exchangers.

  10. The considered important advantage of the LEONARDA air heat exchanger in comparison with the known air heat exchangers enables one to come to a decision to build a refrigerating unit for condensing and collecting atmospheric moisture with thermoelectricity (Peltier thermoelectric modules) without the use of cooling fluids for heat pick-up from the hot junctions of the Peltier thermoelectric modules, eliminating by the same the use of a cooling plant in such a unit. • In a similar way, a device for fast freezing of blood plasma is built without any compression refrigerating machine. A stepped connection of Peltier thermoelectric modules will enable to obtain a maximally low temperature required for fast cooling of blood plasma, while heat generated in the operation of all the thermoelectric modules of the stepped connection is picked up by a LEONARDA air radiator with the help of a fan. • A combination of a LEONARDA air heat exchanger and of a LEONARDA liquid heat exchanger instead of radiators used in motor-vehicle industry and in every branch using internal combustion engines is of a very high interest.

  11. Heat transfer from the exhaust pipe of a vehicle to a boiler of an absorbing air conditioner instead of now used motor-vehicle conditioners provides saving of 8-12 horse-powers per vehicle. Recovery of heat from the exhausting pipe to be used in the efficient LEONARDA air heat exchanger will provide for a considerably higher temperature difference between the hot and cold sides of the thermoelectric modules, and, according to the Zeebeck law, for a considerable electric power that is proportional to the square difference of temperatures between the sides of a thermoelectric module. • The use of the LEONARDA heat exchangers: • Motor-vehicle industry (the cooling radiator of an internal combustion engine, with reduced size while keeping all the characteristics, the cooling system as an absorption conditioner), • Electronic instruments (cooling of active elements), • Medical instrument building (freezing of blood components, of protein fractions), • Air dehumidification + drinking water from air, • Converting heat energy into cold, • Converting heat energy into electric energy

  12. LEONARDA-SERVICE LLC Tel. +7 (495) 772-65-54 E-mail: leonarda-service@mail.ru

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