All-in-on device for evaporation/condensation heat transmission testing in micro pipe and testing method thereof
A testing method and technology of micro-tubes, which are applied in measuring devices, testing of machines/structural components, thermal conductivity of materials, etc., can solve the problems of high cost, single function, small flow rate of micro-tubes, etc.
A testing method and technology of micro-tubes, which are applied in measuring devices, testing of machines/structural components, thermal conductivity of materials, etc., can solve the problems of high cost, single function, small flow rate of micro-tubes, etc.
CN101852749AActive Publication Date: 2010-10-06ζθ
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[0030] see figure 1 . The present invention is an integrated device for testing evaporation / condensation heat transfer in a small tube diameter, which includes a refrigerant circuit 1 , a test section heat exchange circuit 2 , and a heat exchange tube test section 3 . The heat exchange tube test section 3 includes an inner tube 31 passing through the refrigerant and a sleeve 32 passing through the heat exchange medium. The heat exchange medium may be water, oil or alcohol, and this description takes water as an example.
[0031] The refrigerant circuit 1 includes a condensate recovery tank 11, a power pump 12, a regulating valve 13, a refrigerant mass flow meter 14, a parallel regulation test circuit 15 composed of an evaporation preheating passage 151 and a condensation preheating passage 152, a replacement The inner pipe 31 of the heat pipe test section and the condenser 16; the inlet end of the power pump 12 is connected to the outlet end of the condensate recovery tank 1...
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The invention discloses an all-in-one device for evaporation / condensation heat transmission testing in a micro pipe and a testing method thereof. The device comprises a refrigerant circuit and a heat exchange circuit in testing section, wherein the refrigerant circuit comprises a recovery tank, a power pump, a regulating valve, a refrigerant mass flow meter, a regulating testing circuit in parallel composed of a condensation preheating passage and an evaporation preheating passage, a inner pipe in testing section and a condenser; a inlet of the power pump is connected with the recovery tank; an outlet is connected with the refrigerant mass flow meter; the inlet of the regulating testing circuit in parallel is connected with the refrigerant mass flow meter; the outlet of the regulating testing circuit in parallel is connected with the inner pipe in testing section; a refrigerant outlet of the inner pipe in testing pipe is connected with the condenser; and the heat exchange circuit in testing section comprises a outer pipe in testing section and a heat exchanger, a water heater, a water pump and a water mass flow meter in sequent communication. By using the power pump to control the refrigerant flow and using the evaporation preheater / condensation preheater to control the dryness of the refrigerant and using the heat exchange circuit in testing section to control the heat exchange in the testing section, the invention respectively realizes evaporation and condensation heat transmission testing in a micro pipe.
Description
technical field [0001] The invention relates to an integrated device for testing evaporation / condensation heat transfer in a micro-diameter tube and a testing method thereof. Background technique [0002] For heat exchange tubes, it is very important to study their heat transfer and flow performance. In the prior art, a vapor compression refrigeration system is usually used to study the heat transfer and flow performance of the heat exchanger. For example, the patent number is 200410017005.1, and the invention name is "A device for testing the boiling heat transfer characteristics of refrigerant tubes". Refrigerant flow. By adjusting the opening degree of the regulating valve on the oil return pipe connected to the oil reservoir, the bypass air volume of the compressor and the pressure in the test section can be adjusted. Although the heat transfer test of the heat exchanger can be carried out, it has the following disadvantages: [0003] 1. Evaporation / condensation heat...
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Patent Timeline
06 Oct 2010
Publication
CN101852749A
- IPC
- G01N25/18; G01M19/00; G01M99/00
- Inventors
- ζθ; ε§ε¨ζ