SU1139960A2 - Method of operation of centrifugal disc heat pipe - Google Patents

Abstract

METHOD OF WORK OF CENTRIFUGAL DISK HEAT TUBE on auth. No. 681317, characterized in that, in order to intensify heat exchange, the rotation of the pipe is carried out pulsed with its periodic stops, carried out using a magnetic field. t od

Description

11 The invention relates to heat engineering and can be used in heat exchangers. According to the main author. St. No. 681317 is known a method of operating a centrifugal disk heat pipe by supplying heat to the working fluid from the heating medium, evaporating it, subsequent condensation and returning condensate under the action of centrifugal forces to the heat supply zone, while the heating medium under the heat pipe creates rotation of the CO pipe is made. The disadvantage of this method is the low level of heat exchange between the condenser and the material being thermostatted, since the latter is in a stationary state relative to the heat pipe and is heated only by the thermal conductivity of the material. A particularly low level of heat transfer will occur in the case when the material being thermostatted has a low coefficient of thermal conductivity (for example, the flow material is due to the presence of air pores in it). The purpose of the invention is to intensify heat transfer. This goal is achieved by the fact that, according to the method of operation of a centrifugal disk heat pipe, the rotation of the pipe is carried out pulsed with its periodic stops, carried out using a magnetic field. FIG. Figure 1 shows an installation allowing the proposed method to be implemented, a general view; in fig. 2 view A in FIG. f. The installation contains a centrifugal disk heat pipe 1 of a cup-shaped form, partially filled with heat-transfer fluid 2, mounted on the shaft 3, which is installed inside the gas supply pipe A. The heat pipe 1 is placed in the fixed casing 5 on the gas cushion 6, is thermostatically thermostatic material 7. A magnet 8 is mounted on the upper edge of the heat pipe, and an electromagnet 9 on the case 5. The proposed method is implemented as follows. When the heating medium is supplied through the gas supply pipe D under the heat pipe 1, a gas cushion 6 is formed. By means of the shaft 3, the heat pipe 1 is connected to rotational motion at such a rate that the heat-transfer fluid 2 under the action of centrifugal forces is distributed over the internal surface of the heat pipe heated from the gas cushion 6. Due to the transferred heat, the heat carrier evaporates, the vapors are transferred to the surface of the heat pipe opposite to the gas subpagation, where they condense. The heat-condensed heat carrier vapor is transferred to the temperature-controlled material 7, and the heat-condensing heat carrier is thrown by centrifugal forces onto the heated surface of the heat pipe. When the electromagnet 9 is turned on, the heat pipe 1 brakes sharply, which contributes to better mixing of the material 7. The following results are presented in the table, in order to estimate the heat transfer intensification in the plane passing through point A. A comparison of the obtained results shows that with pulsed rotation the intensity of heat exchange is Bbmie. The warm-up time is reduced and, as a result, the plant capacity is increased.

Rotation uniform / pulse 71.2 / 70.3 8.8 / 9.7 6380/7390

80/80

one

85.6 / 84.0 77.5 / 74.7 8.1 / 9.3 5600/6960

726/761

692/748

Table continuation

Claims (1)

METHOD FOR WORKING A CENTRIFUGAL DISK HEAT PIPE according to ed. No. 681317, characterized in that, in order to intensify heat transfer, the rotation of the pipe is carried out in a pulsed manner with its periodic stops using a magnetic field. 1 1139960