Application of evaporative cooling technology in super-high power density magnet

Abstract

Evaporative cooling technology utilizes phase-change heat transfer mode to achieve the cooling for heating equipment. The heat transfer capacity of evaporative cooling technology is far more than air or water cooling technology. The Electron Cyclotron Resonance ion source magnet is a typical super-high power density magnet, and the evaporative cooling technology is an ideal cooling method for the coils of magnet. In this paper we show the structure and process of coils and the special design of flow channels of coolant for an experiment magnet model. Additionally, the heat transfer circulation is presented and analyzed. By the finite element method, the flow channels are optimized to rationally allocate coolant and to reduce the temperature of coils. For the experiment model, the current density of copper wire of coils is 19 A/mm(2), and the coil-windows current density is larger than 12 A/mm(2). The max temperature of coils is below 80 °C, and the total heat is about 200 kW.

A novel natural circulation evaporative cooling system for super-high power intensity ECR ion sources

“…The ECRIS solenoid coils consist of several disc coils that have a bidirectional winding technology [37]. A small gap exists between every two disc coils, as shown in Figure 3 (b).…”

Numerical simulation of electric field-induced phase transition evolution and boiling characteristics in the evaporative cooling medium C6F12O

“…This technology boasts a low-temperature rise, uniform temperature distribution, excellent insulation properties, nonflammability, nonexplosiveness, and a straightforward system structure. Currently, phase-change cooling technology has successfully found applications in power generation equipment [15,16], transformers [17], large scientific instruments [18], and power electronic devices [19][20][21], providing more efficient, safe, and reliable heat dissipation solutions for electrical equipment.…”

Thermal-hydraulic characteristics of the natural circulation evaporative cooling system of hydro-generator stator busbar under different loop heights

“…Therefore, the evaporative cooling technology meets better the safety and high efficiency requirements of generator cooling. Due to the outstanding advantages, the evaporative cooling technology has been widely used in many fields (Guo et al, 2013;Gu et al, 2014;Xiong et al, 2014;Wang et al, 2016;Huang et al, 2017).…”