Lecture

Heat Transport Fundamentals

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In course

ChE-204: Introduction to transport phenomena

This course aims at understanding the basic equations behind macroscopic and microscopic transport phenomena (mass, heat and momentum). ...

Description

This lecture covers the fundamental concepts of heat transport, including conduction, convection, and radiation. It explains Fourier's Law, Newton's Law of Cooling, and the heat transfer coefficients. The lecture also delves into thermal resistance, convective heat transfer, and the modes of heat transport. Practical examples and calculations are provided to illustrate these concepts, such as estimating heat transfer coefficients and temperatures in different scenarios.

Instructor

Raffaella Buonsanti

Teaching & PhD PhD Students Riya Gupta, Jennifer Calderon Mora, Coline Boulanger, Moritz Tritschler, Marco Fabbiano, Seyedmohamadjavad Chabok, Hugh Andrew Warkentin Past EPFL PhD Students Chethana Janardhana Gadiyar, Seryio Saris, Valeria Mantella, Seyedehbehnaz Varandili, Pranit Srinivas Iyengar, Yannick Thomas Guntern, Jan Vávra, Laia Castilla Amorós, Valery Okatenko, Ona Segura Lecina, Ludovic Emile Frédy Zaza, Petru Pasquale Albertini Courses Introduction to chemical engineering Laboratory Works

Official source

Ontological neighbourhood

Mechanical engineering

Thermal engineering: Air conditioning

Related concepts (32)

Thermal conduction

Conduction is the process by which heat is transferred from the hotter end to the colder end of an object. The ability of the object to conduct heat is known as its thermal conductivity, and is denoted k. Heat spontaneously flows along a temperature gradient (i.e. from a hotter body to a colder body). For example, heat is conducted from the hotplate of an electric stove to the bottom of a saucepan in contact with it.

Heat exchanger

A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment.

Heat pump

A heat pump is a device that uses work to transfer heat from a cool space to a warm space by transferring thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. In cold weather a heat pump can move heat from the cool outdoors to warm a house; the pump may also be designed to move heat from the house to the warmer outdoors in warm weather. As they transfer heat rather than generating heat, they are more energy-efficient than other ways of heating a home.

Convection

Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy). When the cause of the convection is unspecified, convection due to the effects of thermal expansion and buoyancy can be assumed. Convection may also take place in soft solids or mixtures where particles can flow. Convective flow may be transient (such as when a multiphase mixture of oil and water separates) or steady state (see Convection cell).

Heat

In thermodynamics, heat is the thermal energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to thermal energy itself. An example of formal vs. informal usage may be obtained from the right-hand photo, in which the metal bar is "conducting heat" from its hot end to its cold end, but if the metal bar is considered a thermodynamic system, then the energy flowing within the metal bar is called internal energy, not heat.

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