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 __   _      ___      ______    _____             
| || | ||   / _ \\   /_   _//  |  ___||   ____    
| '--' ||  | / \ ||    | ||    | ||__    |    \\  
| .--. ||  | \_/ ||   _| ||    | ||__    | [] ||  
|_|| |_||   \___//   /__//     |_____||  |  __//  
`-`  `-`    `---`    `--`      `-----`   |_|`-`   
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Text this: Effect of working fluids and internal diameters on thermal performance of vertical and horizontal closed-loop pulsating heat pipes with multiple heat sources