Shell and Tube Heat Exchanger, Pressure Vessel,Types, Working,Uses,Manufacturing,Functions,Drawings

Detailed steps to determine the necessary length of the  parallel flow  heat exchanger.  In this tutorial, we'll explore how to size a parallel flow concentric heat exchanger.   Here, hot oil is cooled by water that jackets it. The given information includes: Oil: Enters at 100°C and leaves at 60°C Mass flow rate: 0.15 kg/s (kilograms per second) Heat capacity: 2131 J/kg°C (joules per kilogram degrees Celsius) Convective heat transfer coefficient: 38.8 W/m²°C (watts per meter squared degrees C) Water: Enters at 25°C and leaves at 50°C Convective heat transfer coefficient: 2250 W/m²°C (watts per meter squared degrees C)   We aim to determine the length of the tube required for the necessary cooling. We'll make a couple of assumptions: negligible heat loss to the surroundings and a thin wall between the fluids, implying no conductive heat resistance between them.   Governing Equation Our heat transfer rate (𝑄) is given by the equation: Q=U×A×ΔT log mean ​ ...

  Steam Requirements for Heating Water in a Heat Exchanger When designing and operating heat exchangers, one common question is: how much steam is required to raise the temperature of water to a desired level? This blog provides a detailed step-by-step guide to perform these calculations using two different examples. Example 1: Case Study:   We have a hot water absorption heater with the following parameters:   Mass flow rate of hot water: 131.9 cubic meters per hour (36.63 liters per second). Initial temperature of water: 85°C. Desired temperature increase: From 85°C to 92°C (ΔT = 7°C). The specific enthalpy of steam at 8 bar is 2767 kJ/kg, and the specific heat capacity of water is 4.19 kJ/kg°C.   Solution:   Calculate the Heat Load (Q): 𝑄=𝑚˙×𝐶𝑝×Δ𝑇 𝑚˙=36.63 kg/s C p =4.19 kJ/kg°C Δ𝑇=7°𝐶 Q=36.63×4.19×7=1074 kJ/s   Calculate the Required Steam Flow Rate: Δℎ=2767−419=2348 kJ/kg 𝑚˙steam=𝑄/Δℎ=1074/2348=0.457 kg/s ...

  Heat exchangers Specific Applications and General Maintenance. The heat exchangers we have seen up to now have all been used to heat, a process liquid in some instances. However, the purpose of heat exchange is to remove heat from a fluid that requires cooling. Suppose we wanted to convert steam generated by one process into feed water for another process.   To do this a shell and tube exchanger can be used as a condenser. This cutaway will show how the condenser works. Water enters the space between the head of the shell and the adjacent tube sheet and flows through the tubes to the opposite end.   Steam enters at the top of the shell and flows down and between the condenser's tubes. When the steam is cooled it condenses to water and falls into the hot well at the bottom of the condenser. Air also may be used to cool steam. Here a fan blows air across tubes that carry steam. Although not as efficient as water the air absorbs heat from the steam and the st...

  The Importance of Smart Shell and Tube Heat Exchanger Maintenance This guide explains the essential parts of maintaining a shell and tube heat exchanger. It covers the important stuff like explaining how these heat exchanges are put together and why regular upkeep is essential. It also finds common problems, clear signs and proactive jobs so workers can get helpful information for the best performance.   What Is Shell And Tube?   A shell and tube heat exchanger is a heat exchanging device made up of an ample cylinder shaped housing or shell that has bundles of tubing squished together inside it. This device makes moving heat from one stream to another easier. There are many tubes inside the shell and one fluid flows through them while the other flows around the outside.   The shape makes heat exchange more efficient and vents inside the shell make it more turbulent. This keeps heat from standing still and speeds up heat transfer overall. Shell and t...