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TYPES OF HEAT EXCHANGERS ACCORDING TO TRANSFER PROCESS

A heat exchanger is a device built to either eat or cool off elements by transferring heat from one medium to another, ideally liquid or gas.<br>Heat exchangers are used across a variety of industries in numerous ways. In this PPT, know about the types of heat exchangers according to their transfer process.

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TYPES OF HEAT EXCHANGERS ACCORDING TO TRANSFER PROCESS

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  1. TYPES OF HEAT EXCHANGERS ACCORDING TO TRANSFER PROCESS

  2. A heat exchanger is a device built to either eat or cool off elements by transferring heat from one medium to another, ideally liquid or gas. • Heat exchangers are classified into direct contact type heat exchangers and indirect contact type heat exchangers in terms of their transfer process. Classification of heat exchangers accordingto transfer process

  3. In these exchangers, two fluids come in a direct contact to exchange heat and then separate away. • They are cost-effective, facilitate high heat transfer and easy installation. • These devices have no separating wall, and avoid any foul behaviour. • They are benign when the hot and cold fluids of the same fluid medium are at varying temperatures. • Direct contact type heat exchangers are further classified into: Direct Contact Type Heat Exchangers

  4. Immiscible fluid exchangers: The energy is transferred through straight contact of two immiscible fluids i.e. two non-mixing liquids together. • Gas - Liquid exchangers: These machines have one fluid media that is a gas while the other fluid being liquid, usually water. • Liquid Vapour exchangers: Heat transfer in them takes place by condensing a steam, entirely or partly by using water or by heating water through steam; both are carried out by direct contact.

  5. These heat exchangers are also known as surface heat exchangers. • Two fluids, hot and cold, are kept physically separated from each other, with a metal wall, to avoid contamination of both. • The heat, however, is transferred in an ephemeral way. • They are divided into the following types: Indirect Contact Type Heat Exchangers

  6. Direct transfer type heat exchanger: Unceasing warmth is transported from hot to the cold fluid through a partition, with the two fluids flowing through separate channels. • Storage type heat exchanger: Two fluids flow alternatively in the same passage due to which the heat transfer is irregular. • Fluidized bed heat exchanger: They are two-fluid exchangers with a side immersed in a bed of finely distributed solid material.

  7. To know more about heat exchangers log on to: http://www.sanghviimpex.com/

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