What is heat exchangers with examples?

What is heat exchangers with examples?

A heat exchanger is a device that facilitates the process of heat exchange between two fluids that are at different temperatures. Air preheaters, economizers, evaporators, superheaters, condensers, and cooling towers used in a power plant are a few examples of heat exchangers.

What does a heat exchanger do thermodynamics?

Heat exchangers are pieces of equipment used to transfer heat from a hot fluid to a cold fluid. They are essential as they carry out the task of changing the temperature of the more valuable fluid which is used later on in the process. The fluids may be of different phases, which may be transformed to another phase.

How do you calculate heat exchanged?


  1. The main basic Heat Exchanger equation is: Q = U x A x ΔTm =
  2. The log mean temperature difference ΔTm is: ΔTm =
  3. (T1 – t2) – (T2 – t1) = °F.
  4. T1 = Inlet tube side fluid temperature; t2 = Outlet shell side fluid temperature;
  5. ln (T1 – t2) (T2 – t1)

What are problems in heat exchanger?

3 Common Heat Exchanger Problems

  • Rust and Corrosion. Heat exchangers can corrode and rust out due to excess condensation inside the furnace.
  • Age-Related Deterioration. Furnace heat exchangers are designed durably to withstand repeated cycles of heating up and cooling down over a long service life.
  • Premature Metal Failure.

Which is not an example of heat exchanger?

Which of the following is not an example of recuperators type heat exchanger? Explanation: Recuperators are not used in chemical factories.

What is TEMA type heat exchanger?

TEMA stands for “Tubular Exchangers Manufacturers Association” and is a set of standards that were developed by leading shell and tube manufacturers. These standards define the style of heat exchanger and the machining and assembly tolerances.

What is fouling in heat exchanger?

Fouling is the formation of unwanted material deposits on heat transfer surfaces during process heating and cooling. It occurs in all industries and most heat exchanger designs, with impacts ranging from heat transfer degradation to flow resistance and pressure drops.

What is a heat exchanger in engineering?

Heat exchangers are devices that are used to transfer thermal energy from one fluid to another without mixing the two fluids.

What affects heat transfer in heat exchanger?

Heat transfer performance of heat pipe heat exchanger affected by many factors, such as the opening temperature of the heat pipe, the rate of fluid-filled, the physical nature of liquid refrigerant, the work temperature of tube, angle, tube spacing, tube length, hot and cold fluid flow and wind speed.

What is a heat exchanger and how does it work?

Innovative Heat Exchangers by Hans-Jörg Bart and Stephan Scholl (eds). Springer,2017/2019.

  • Heat Exchanger Design Handbook by Kuppan Thulukkanam. CRC Press,2017.
  • Fundamentals of Heat Exchanger Design by R. K. Shah and Dušan P.
  • Heat Exchanger Design by Arthur P. Fraas. Wiley-IEEE,1989.
  • Heat Transfer Handbook,Volume 1 by Adrian Bejan and Allan D. Kraus.
  • Which heat exchanger is best?

    When the amount of fluids are more we will use plate n frame heat exchanger .

  • When required heat transfer cofficient is more then double pipe heat exchanger is efficient .
  • When amount f fluids are huge and temperature difference required is more and pressures and temparatures are more we will go for shell and tube heat exchanger .
  • What is the process of a heat exchanger?

    Shell and Tube Heat Exchangers. The most common type of heat exchangers,shell and tube heat exchangers are constructed of a single tube or series of parallel tubes (i.e.,tube

  • Double Pipe Heat Exchangers.
  • Plate Heat Exchangers.
  • Condensers,Evaporators,and Boilers.
  • Other Heat Exchanger Variants.
  • What do you need to know about a heat exchanger?

    – The composition and flow rates of the fluids – The temperature change desired – The fluid properties needed (density, viscosity, thermal conductivity) – The desired operating temperature and pressure