Efficient Heat Transfer Utilizing Liquid/Vapor Phase Change
December 9 - December 21
Efficient heat transfer is of great importance in many technical areas, ranging from cryogenic cooling of IR sensors for terrestrial and space applications, to cooling of combustion engines and turbines in the automotive, aerospace and industrial/power station sectors. Various technologies are in use, with specific advantageous/disadvantageous features. Heat transfer by utilizing the latent heat of evaporation is without doubt very efficient and allows in many cases improved heating/cooling solutions. This efficient heat transfer can be realized by Heat Pipes and Closed Two-Phase Thermosyphons. They have found wide-spread applications, ranging from microelectronics cooling in computers and satellites to large-scale waste heat recovery in industry and power stations. Their modus operandi comprises a multitude of physical phenomena like surface physics, microscale heat and mass transfer, two-phase fluid mechanics and materials compatibility. They can be designed in a variety of geometrical shapes and dimensions (from very small ball pen size tubes and thin flat plates to big drum or box type elements and very long (over 100 m) cylindrical elements. Due to their construction and operation principle and their geometrical design, a multitude of thermal tasks can be accomplished: besides highly efficient heat transport for cooling and heating applications, also heat flux transformation, provision of isothermal spaces, thermal diode behavior and many more. The lecture course gives an introduction into the physics and operational behavior of Heat Pipes and Closed Two-Phase Thermosyphons and provides elementary tools for analysis and design of these systems. The most important types are discussed in some detail, and a rather comprehensive overview on technical applications is given.
Indian Institute of Technology Madras is a public engineering institute located in Chennai, Tamil Nadu. As one of the Indian Institutes of Technology (IITs), it is recognised as an Institute of National Importance. Founded in 1959 with technical and financial assistance from the former government of West Germany, it was the third IIT that was established by the Government of India. IIT Madras has been ranked as the top engineering institute in India for four years in a row (2016-2019) by the National Institutional Ranking Framework of the Ministry of Human Resource Development.
IIT Madras is a residential institute that occupies a 2.5 km² (617 acre) campus that was formerly part of the adjoining Guindy National Park. The institute has nearly 550 faculty, 8,000 students and 1,250 administrative and supporting staff.Growing ever since it obtained its charter from the Indian Parliament in 1961, much of the campus is a protected forest, carved out of the Guindy National Park, home to large numbers of chital (spotted deer), black buck, bonnet macaque, and other rare wildlife. A natural lake, deepened in 1988 and 2003, drains most of its rainwater.