Quick Answer: What Is Heat Exchanger PDF?

What is heat exchanger and types?

A heat exchanger is a system used to transfer heat between two or more fluids.

Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant..

What is a 1/2 Heat Exchanger?

Most shell-and-tube heat exchangers are either 1, 2, or 4 pass designs on the tube side. This refers to the number of times the fluid in the tubes passes through the fluid in the shell. In a single pass heat exchanger, the fluid goes in one end of each tube and out the other.

What is heat explain?

Heat, energy that is transferred from one body to another as the result of a difference in temperature. … The effect of this transfer of energy usually, but not always, is an increase in the temperature of the colder body and a decrease in the temperature of the hotter body.

How do I choose a heat exchanger?

The following criteria can help in selecting the type of heat exchanger best suited for a given process:Application (i.e. sensible vapor or liquid, condensing or boiling)Operating pressures & temperatures (including startup, shutdown, normal & process upset conditions)More items…

What is difference between heat exchanger and condenser?

Condenser and Heat Exchangers: A condenser is an apparatus intended to condense vapors to a liquid state from their gaseous state. … A heat exchanger works to conduct heat from a substance of higher temperature to a substance of lower temperature without phase changes.

What is a heat exchanger in a house?

Mechanical ventilation systems are known as heat exchangers, HVACs (Heating, Ventilation and Air Conditioning) or HRVs (Heat Recovery Ventilators). The point of these systems is to remove moisture and provide fresh air to your home that is pre-heated by the outgoing air.

What is exchanger and types?

The two main types are finned and unfinned tubular. With a finned tubular heat exchanger, both fluids are unmixed, the one between the fins is guided in a direction transverse to the tube flow direction. In the unfinned exchanger heat can be exchanged in all directions, and the fluid can mix.

What are the two types of heat?

The three types of heat transfer Heat is transfered via solid material (conduction), liquids and gases (convection), and electromagnetical waves (radiation). Heat is usually transfered in a combination of these three types and seldomly occurs on its own.

How many types of exchangers are there?

There are two main types of regenerative heat exchangers—static heat exchangers and dynamic heat exchangers.

Which heat exchanger is most efficient?

Each of the three types of heat exchangers (Parallel, Cross and Counter Flow) has advantages and disadvantages. But of the three, the counter flow heat exchanger design is the most efficient when comparing heat transfer rate per unit surface area.

What are the parts of a heat exchanger?

The Major Components of Heat ExchangersThe Tubes. Tubes are perhaps the most important component of a heat exchanger. … Front and Rear Headers. The front and rear headers of heat exchangers are where the liquid enters and leaves the tubes. … Transfer Line Exchangers. … The Air Cooling System. … Why Heat Exchange Is Necessary.

What is the meaning of heat exchanger?

A heat exchanger is a system used to transfer heat between two or more fluids. … Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant.

What is the function of heat exchanger?

Heat Exchangers The function of a heat exchanger is to transfer heat from one fluid to another.

How do you calculate Reynolds number in heat exchanger?

The Reynolds number (Re) of a flowing fluid is calculated by multiplying the fluid velocity by the internal pipe diameter (to obtain the inertia force of the fluid) and then dividing the result by the kinematic viscosity (viscous force per unit length).

What are the 6 sources of heat?

Here are only some of your many choices for heating energy sources: natural gas, propane (LP), oil, coal, wood, electricity, heat pumps, ground source heat pumps and solar energy. Radiantec strives to offer products that are highly energy efficient and yet still a smart investment.

What are the 4 types of heat transfer?

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.

Is boiler a heat exchanger?

Since exchange of heat occurs in the Boilers, Boilers can be termed as a Heat Exchanger. But there’s more to a Boiler, than just being a Heat Exchanger. … But A Boiler generates heat through chemical reaction of the fuel, and exchanges the heat with the water to produce steam or heated water depending on the application.

Who invented heat exchanger?

Dr Richard SeligmanThe plate heat exchanger (PHE) was invented by Dr Richard Seligman in 1923 and revolutionised methods of indirect heating and cooling of fluids.