MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202621042843 A) filed by Manoj Kumar Chaudhary; Purva Hemant Kadam; Mahesh Krishna Gaikwad; Ramanathan Venkatachalam; Sandesh Bhimrao Mane; and Devdhe Mayur Sayaji on April 03, 2026, for Design And Development Of An Optimized Closed Loop Pulsating Heat Pipe With Controlled Variable Filling Ratio For Enhanced Thermal Performance..
Inventors include Manoj Kumar Chaudhary; Purva Hemant Kadam; Mahesh Krishna Gaikwad; Ramanathan Venkatachalam; Sandesh Bhimrao Mane; and Devdhe Mayur Sayaji.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: The present invention relates to a closed-loop pulsating heat pipe (CLPHP) with an optimized variable filling ratio for enhanced thermal management of electronic devices, microelectronics, and space systems. The CLPHP comprises a continuous capillary tube arranged in a closed-loop configuration with multiple turns, containing alternating liquid slugs and vapor plugs. When heat is applied to the evaporator section, vapor expansion generates oscillatory motion of the liquid slugs, which transport thermal energy to the condenser section where vapor condenses. This pulsating action provides efficient two-phase heat transfer without requiring mechanical pumps. A key feature of the invention is the optimization of the working fluid filling ratio, which significantly affects thermal performance. Experimental and simulation results demonstrate that a filling ratio of approximately 60% achieves minimum thermal resistance and maximum heat transfer efficiency. Filling ratios below this value result in insufficient liquid for effective slug formation, while higher ratios suppress vapor generation and reduce oscillation dynamics.
Disclaimer: Curated by HT Syndication.
