# Category - Heat Transfer

## Air Coolers

An air cooled heat exchanger, or ACHE, is simply a pressure vessel which cools a circulating fluid within finned tubes by forcing ambient air over the exterior...

## Finned Tube Heat Exchangers

Finned tube heat exchangers have tubes with extended outer surface area or fins to enhance the heat transfer rate from the additional area of fins. Finned...

## Boilers

Boilers are basically vessels used for heating the water and converting it to steam, as the name suggests. Boilers vessels generally use an internal heat...

## Cooling towers

Before the use of cooling towers, rivers, lakes, or other cooling water supplies were required in order to meet cooling needs of power plants.
Cooling towers...

## Typical Vapor Compression Refrigeration (VCR) cycle

Vapor Compression Refrigeration uses mechanical energy by repeating compression and expansion of coolant fluid to achieve cooling by Joule–Thomson effect. A...

## Use of heat exchanger bypass for design for different operating cases

The following example demonstrates how heat exchanger bypass can be effectively used for temperature control for a heat exchanger.
Question
Design a heat...

## Sample Problem – Heat Transfer by Conduction across a composite wall

Problem Statement
Determine the overall heat transfer by conduction per unit area occurring across a furnace wall made of fire clay. Furnace wall has a...

## Energy balance calculation for heat exchanger

Energy balance calculation is often done for designing a heat exchanger to determine operating parameters for hot and cold fluids such as - inlet / outlet...

## Calculation of overall heat transfer coefficient

Problem Statement
Determine the overall heat transfer coefficient 'U' for heat transfer occurring from superheated steam in a steel pipe to atmosphere, with...

## Heat transfer coefficients for heat exchangers

Steady state convective heat transfer on either side of a heat exchanger (hot or cold side) can be expressed with following figure and equation,

## Heat Transfer – Convection of Heat

Heat transfer by convection generally occurs between a fluid and a solid surface and convective heat transfer is accompanied by motion of the fluid. This is...

## Thermal Conductivity Values for Metals

Following list of thermal conductivity values for metals can be used for heat transfer calculations around different applications.

Metal
Thermal...