Lets first define the term “Heat duty” to understand what understand what exactly we are calculating. The Heat duty can be defined as the amount of heat needed to transfer from… Continue reading
The table below compares different type of shell and tube heat exchangers based on different design characteristics:
+ Fixed tube sheet + U Tube + Packed Floating Head + Internal Floating Head + Outside… Continue reading
The main problems affecting the performance are usually due to one of the following:
+ Tube vibrations
+ Dead Zones
In shell and tube heat exchangers the number of shell passes or the number of tube passes will always come across. The number of passes in general affects your pressure drops in shell and tube heat exchangers. This short article will show the difference between them for quick reference.
The tubes are arranged within the shell and tube heat exchangers in passes. The passes can be One, Two, Four, Six or Eight.
This arrangement can be illustrated in the figure below:
This short article aims to show you how to calculate the LMTD for Counter current flow and Co-current flow also called (Parallel flow). The calculation has been referenced by many text books. You can also download the free calculator attached with this article. Continue reading
Shell and Tube Condenser Design with Condenser Design (CnD) software
Click here to download the demonestration clipCnD is a software that is made to demonstrate thermal analysis and design calculations required for designing shell and tube condensers. This software can design, horizontal shell side condensers, horizontal tube side condensers, vertical shell side condensers, vertical tube side condensers and reflux condensers. This software application is intended for use by professional and academics in the engineering industry. Some basic understanding in thermodynamics, fluid flow and shell & tube heat exchangers is required before attempting to use this tool.Below is a list of main features: Continue reading
Part 2 of 3
This part will provide a short summary on the TEMA Shell types and designations available. The types listed here are the ones that TEMA standards refers to. However depending on the application special types can be manufactured. Continue reading
Part 1 of 3
Shell and tube heat exchangrs can be divided into three major parts, these parts are the front head, shell section, and rear head. Each of these components is available in a number of standard designs. This article only discuss the designations provided in TEMA standards. Continue reading