Abstract: An anti-heat source fluctuation heat exchange system based on active flow control and its controlling method are provided. In operation, the heat source is delivered to both the tube side and the shell side of two sub-heat exchangers through two distinct processes, where it exchanges heat with the working fluid. An electronic control unit monitors the heat source flow fluctuations in the main circuit using flow sensors. Based on this data, the control unit adjusts the position of an electronic control three-way valve and continuously monitors the heat source flow rate in the sub-circuit in real time. This allows precise control of the flow distribution ratio of the heat source across the sub-circuits, ensuring that the heat exchange system maintains the required heat transfer to the working fluid despite fluctuations in the heat source flow. The system demonstrates a high level of adaptability to fluctuations in heat source.

Abstract: The present disclosure provides a method for designing a supercritical heat exchanger based on pseudo-phase transition partition. The method mainly includes the following steps: inputting boundary conditions of a heat exchanger; calculating an upper boundary temperature and a lower boundary temperature of a pseudo-phase transition region; calculating a temperature of an inner wall surface of a supercritical fluid; determining an upper boundary temperature of a pseudo-superheated condensation region; and dividing the heat exchanger into four sections on the basis of above three boundary temperatures and inlet and outlet temperatures, and calculating the section size and the total size of the heat exchanger. According to the method, the automatic partition determination of single-phase cooling and pseudo-superheated condensation in a supercritical air cooler can be realized, requiring no division of the heat exchanger according to equal enthalpy change or equal length, and the calculation is rapid and accurate.

Abstract: The present disclosure discloses a miniature super surface mount fuse, comprising: a fuse element provided with a low overload fusing point and at least two high breaking capacity fusing points connected in series with the low overload fusing point and respectively arranged on two sides of the low overload fusing point, at least two cavity plates provided with cavities, the low overload fusing point and the high breaking capacity fusing points being located at corresponding positions of the cavities; the present disclosure further provides a manufacturing method for a surface mount fuse; the miniature super surface mount fuse of the present disclosure can provide the protection for the civil consumer electronic circuit under various overload conditions without the occurrence of safety hazards such as smoking or cracking of the housing or explosion.

Abstract: The present disclosure discloses a miniature super surface mount fuse, comprising: a fuse element provided with a low overload fusing point and at least two high breaking capacity fusing points connected in series with the low overload fusing point and respectively arranged on two sides of the low overload fusing point, at least two cavity plates provided with cavities, the low overload fusing point and the high breaking capacity fusing points being located at corresponding positions of the cavities; the present disclosure further provides a manufacturing method for a surface mount fuse; the miniature super surface mount fuse of the present disclosure can provide the protection for the civil consumer electronic circuit under various overload conditions without the occurrence of safety hazards such as smoking or cracking of the housing or explosion.