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Knowledge in Heat Power
Engine Trial Theory
A brief discussion of Engine Trial Theory in subject of Heat Power in First Year of B.tech in any branch of engineering. Basically it is a subject more useful to students of B.tech pursuing Chemical Engineering and Mechanical Engineering
Harshiv Raval
Electric Iron
The iron is the small appliance used to remove wrinkles from fabric. It is also known as a clothes iron, flat iron, or smoothing iron. The piece at the bottom is called a sole plate. Ironing uses heat energy, chemical energy, electrical energy, and mechanical energy.
Arun Thomas
Engineering Heat Transfer 2
Studying is nothing without practice. Practice makes a man perfect. So there are ample of questions to be practiced to improve and test your preparation level. These questions are taken from various books and approved by our teachers. Will help to fetch you good marks in exam.
Deepjyoti Ray
Heat and the Heat Transfer Equipments
This slide focuses on heat transfer modes and is for keen learners, prepared by one of the finest faculties at VJTI. 1.) Desired/ Intended: Examples Cooking Cooling of engines and machines Heat treatment- also soldering, welding, etc. Cold treatment Storage of heat Cooling of wires, electronic gadgets etc 2.) Undesired/unintended : Examples Loss of heat-which could have produced work Loss such as cooling of working medium-steam, flue gases Cooling of tea, coffee Heating of cold drinks etc.
VEDANT MILIND ATHAVALE
boiling heat transfer
Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes. Engineers also consider the transfer of mass of differing chemical species, either cold or hot, to achieve heat transfer. While these mechanisms have distinct characteristics, they often occur simultaneously in the same system. Heat conduction, also called diffusion, is the direct microscopic exchange of kinetic energy of particles through the boundary between two systems. When an object is at a different temperature from another body or its surroundings, heat flows so that the body and the surroundings reach the same temperature, at which point they are in thermal equilibrium. Such spontaneous heat transfer always occurs from a region of high temperature to another region of lower temperature, as described in the second law of thermodynamics. Heat convection occurs when bulk flow of a fluid (gas or liquid) carries heat along with the flow of matter in the fluid. The flow of fluid may be forced by external processes, or sometimes (in gravitational fields) by buoyancy forces caused when thermal energy expands the fluid (for example in a fire plume), thus influencing its own transfer. The latter process is often called "natural convection". All convective processes also move heat partly by diffusion, as well. Another form of convection is forced convection. In this case the fluid is forced to flow by use of a pump, fan or other mechanical means. Thermal radiation occurs through a vacuum or any transparent medium (solid or fluid or gas). It is the transfer of energy by means of photons in electromagnetic waves governed by the same laws.[1]
Subham Bera