Laboratory modeling of heat transfer system of radiology tube using multi-walled carbon nanofluid and evaluation of heat transfer coefficient

Abstract

X-ray tube is the main part of the radiology device to produce X-ray. One of the main problems with this equipment is the too much heat generated at the anode of the tube as a result of clashing the high-energy electron beam on its surface. Lack of proper transfer of heat generated at the anode, further destruction and reduces the life time of the X-ray tube. Considering the important role of oil around the X-ray tube as a transferor of generating heat, in this article, this oil is replaced by different weight percentages of nanofluids and heat transfer coefficients have been investigated in different conditions for the first time in the world. However experimental models of X-ray tube heating system was built with heating element and the same amount of heat generated at the anode was produced by applying the electrical power to the element. In addition, the nanofluid has been built with the combination of multi-walled carbon nanotubes and transformer oil in different weight concentration and thermal behavior of the tube has been compared using conventional oil and nanofluids. The obtained experimental results indicate that using improves the heat transfer significantly. Using this new technology in radiology systems and similar equipment, in addition to eliminating the complicated process of X-ray tubes, the efficiency of this type of equipment will increase considerably.

Keywords

• heat transfer
• radiology tube
• x-ray
• anode
• nanofluid
• transformer oil
• weight concentration
• multi-walled carbon nanotube