56results about How to "Achieve heat transfer performance" patented technology

The invention provides a rod-fin type loop heat pipe with varying sizes. The rod-fin type loop heat pipe includes an evaporation header, a condensation header, rising pipes and return pipes, flow stabilizing devices are arranged in the rising pipes, the flow stabilizing devices each include a core body and an outer shell, the core bodies are arranged in the outer shells, the outer shells are connected and fixed to the inner walls of the rising pipes, the core bodies each include a plurality of radial rods extending from the centers of the core bodies to the radial direction, and a plurality offins extending downwards from the radial rods are arranged on each radial rod; and the core bodies each include a core column arranged at the center of each core body, one ends of the radial rods arefixed into the core columns, and from the core columns of the rising pipes to the radial extension direction, the size of the fins on the same radial rods is getting larger and larger. According to the rod-fin type loop heat pipe with the varying sizes, the size of the fins on the rising pipe walls is increased, so that the ability to cut vapor phases and liquid phases near the pipe walls is enhanced. The ability to cut near the pipe walls is focused to be strengthened, and noise reduction and vibration damping can be targeted for specific situations, so that the effects of noise reduction and vibration damping are further achieved, and meanwhile, heat transfer can be further enhanced.

The invention discloses an integrated device for testing evaporation / condensation heat transfer in a micro-diameter tube and a testing method thereof. The device includes a refrigerant circuit and a test section heat exchange circuit; the refrigerant circuit includes a recovery tank, a power pump, a regulating valve, a refrigerant mass flow meter, a parallel regulation test circuit composed of a condensation preheating path and an evaporation preheating path, and a test section Inner pipe and condenser; the inlet of the power pump is connected to the recovery tank, and its outlet is connected to the refrigerant mass flowmeter; the inlet of the parallel regulation test circuit is connected to the refrigerant mass flowmeter, and its outlet is connected to the inner pipe of the test section; The refrigerant outlet of the tube is connected to the condenser; the test section heat exchange circuit includes the test section outer tube and sequentially connected heat exchanger, water heater, water pump, and water mass flowmeter. Control the flow of refrigerant through the power pump, control the dryness of the refrigerant through the evaporation preheater / condensation preheater, and control the heat transfer amount of the test section through the heat exchange circuit of the test section to realize evaporation and condensation in small pipe diameters respectively. Heat transfer test.

The invention relates to a center spring and helical blade rotor in a heat exchange tube. The rotor mainly comprises a hollow shaft, hollowed-out blades and helical springs. The hollowed-out blades are positioned on the surface of the hollow shaft, the outer diameter of each hollowed-out blade is smaller than the inner diameter of the heat exchange tube, the hollowed-out blades are smooth in surface and helically shaped around the hollow shaft, and a hollowed-out structure is arranged on the surface of each hollowed-out blade so as to reduce contact area of fluid and the rotor blades and reduce pressure loss when the fluid flows through the rotor. In order to reduce flow resistance of the fluid in the tube and further enhance strengthened heat transfer and self-cleaning performance of the hollowed-out portions, the helical springs are arranged in hollowed-out structures at the centers of the blades. The helical springs are arranged in the hollowed-out structures at the centers of the blades, so that tangential and radial movements of fluid regions in the hollowed-out structures are enabled to be strengthened in the process that the helical springs rotates with the rotor, a turbulence effect in the hollowed-out regions is further improved, and functions of scale prevention, descaling and strengthened heat transfer are further realized.

The invention discloses a temperature regulating type medicine gas ventilating and combining moxibustion device, which is characterized by comprising a moxibustion box, a moxibustion rack and a smoke discharging device, wherein the moxibustion box comprises a heat-concentration reflex housing, a chamber, a radiating base and a combustion medicine slot; the heat-concentration reflex housing is reversely buckled on the chamber and is tightly connected with the radiating base; and the circumstance of the upper end of the radiating base is symmetrically provided with two round connection holes. The connection relationship of the temperature regulating type medicine gas ventilating and combining moxibustion device is as follows: the moxibustion box is connected to the moxibustion rack by the round connection holes, and the smoke discharging device is connected with a through hole of the moxibustion box to discharge smoke generated in the moxibustion treatment process. According to the temperature regulating type medicine gas ventilating and combining moxibustion device disclosed by the invention, multipoint moxibustion treatment can be carried out, the generated heat can be directly act on the skin to carry out radiation or heat transfer, the smoke and the volatile matters of moxibustion grass can be gathered on the position which needs to be subjected to the moxibustion treatment at a proper temperature, and the temperature is regulated at any time according to the requirement.