Download ppt on heat transfer

Conversely a poor absorber is a poor emitter. Stefan —Boltzman law gives the total amount of radiation emitted by a black body.

Method of heat transfer. Cross flow heat exchanger Classification of heat exchanger according to transfer process. Storage type. Direct transfer type: In this type, the hot and cold fluid flow simultaneously through the device and heat is transferred through a wall separating the fluids. These are also referred as regenerative heat exchanger.

The heat transfer takes place between two immiscible fluids like gas and liquid coming into direct contact. Two fluids can exchange heat ,one fluid flows over the outside of tube while second fluid flows inside tubes. In this process, the tube gets heated rapidly due to high value of steam film coefficient.

Thus enhanced rate of heat transfer. Therefore multipass tubular heaters are superior to single pass shell and tube heater. Since the heater is multipass, the same liquid has to flow through several tubes back and forth. Since heater is multipass, so same liquid has to flow through several tubes back and forth.

Plate type heat exchanger The liquid to be heated is a cold liquid. Total views 19, On Slideshare 0. From embeds 0. Number of embeds Downloads Shares 0. Comments 0.

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Download Now Download Download to read offline. Heat Transfer. Chapter 1 introduction of heat transfer. Heat exchangers. Introduction to heat transfer. Heat transfer. Size reduction theories. Related Books Free with a 30 day trial from Scribd. Related Audiobooks Free with a 30 day trial from Scribd. Empath Up!

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