Dr. Arunachala U Chandavar received post-graduate degree - first class with distinction in energy systems engineering in 1997 from Karnatak University, Dharwad, and a doctoral degree in solar thermal systems in 2010 from Visvesvaraya Technological University, Belgaum. His teaching career commenced in 1997, and since 2008, he has been involved in laboratory development and research activities at the Renewable Energy Center, MIT Manipal. His research interests are analysis of natural circulation loops, Design of solar thermal systems, Thermal management of electronic devices, design of heat exchangers etc. He has guided 4 Ph D and approximately 25 M Tech projects. Also, he has 50+ reputed international journal articles, 25+ international conferences, and DST funded projects to his credit. He established the Renewable Energy Center in 2013 at MIT, Manipal. At present, he is the Head of Mechanical & Industrial Engineering department.Dr Pallippattu Krishnan Vijayan is currently working as a Raja Ramanna Fellow at the Bhabha Atomic Research Centre (BARC) and his research focuses on natural circulation based passive safety systems for advanced reactors. Dr Vijayan, a chemical engineer from the University of Calicut joined BARC after completing the training course in nuclear science engineering conducted by BARC. He received his PhD from the Department of Energy Systems Engineering, IIT Bombay in 1989. A Distinguished Scientist, Dr Vijayan served at BARC in various positions such as group leader, head, thermal hydraulics section, head reactor engineering division and Director, Reactor Design and Development Group. He has worked nearly four decades in the field of thermal hydraulics of nuclear reactors and his specific field of expertise is natural circulation based passive safety systems. He played a key role in the thermal hydraulic design of thorium based Advanced Heavy Water Reactor (AHWR) and established large scale integral test facilities for its thermal hydraulic design validation. He participated in several International Atomic Energy Agency (IAEA) coordinated research projects and bilateral research projects like Indo-Italian, Indo-German, Indo-UK, Indo-Korea and AERB-US NRC. He was one of the experts invited by IAEA to formulate a training course on ‘Natural circulation phenomena and passive safety systems for advanced water cooled reactors’ and is a lecturer for this IAEA training course since 2004. Mr. Varun K. is a post-graduate from the 2020 batch of Thermal Sciences & Energy Systems program of the MIT Manipal. Presently, he is pursuing a doctoral degree under the supervision of Dr Arunachala U Chandavar and co-supervision of Dr Pallippattu Krishnan Vijayan at Renewable Energy Center, MIT, Manipal on the topic “steady state and transient behaviour of the coupled natural circulation system applicable to indoor solar cooktops”. He has more than 20 publications of international repute. His research areas are CFD analysis of passive heat transport systems, thermal management of photovoltaics, and analysis of natural circulation systems etc.

• Part 1: INTRODUCTION1. Passive heat transport systems2. Thermosyphon Heat Transport Device and its backgroundPART 2: CONVENTIONAL THERMOSIPHON HEAT TRANSPORT DEVICE3. Analytical, experimental and computational methodology4. Effect of operational and geometric parameters5. Comparison with Heat Pipe and Two-phase closed thermosyphonPART 3: COOKTOP THERMOSIPHON HEAT TRANSPORT DEVICE6. System design and geometry optimization7. Analytical, Experimental, and Computational investigation8. Effect of bends and heat transfer fluid on system performancePART 4: APPLICATIONS, CHALLENGES AND LIMITATIONS OF THERMOSIPHON HEAT TRANSPORT DEVICE9. Integral system for solar indoor cooking10. Relevance in other fields11. Challenges, limitations and material aspects