Heat exchanger WRITE UP

Heat exchanger WRITE UP - Matthew Callesen Daniel Roberts...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Matthew Callesen Daniel Roberts MAE 3183 Wednesday Section Experiment #4 Concentric Tube Heat Exchanger Date Performed: 9/27/06 Date Due: 10/5/06
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Abstract The purpose of this laboratory experiment was to determine the effiency of two different configurations of a concentric tube heat exchanger. Parallel flow and counter- flow experiments were conducted, and the temperatures and pressure drops were recorded for various volume flow rates. The accumulated data was then compiled inan excel spreadsheet, and the heat transfer between the fluids was calculated. The actual heat transfer data was then compared to the theoretic heat transfer so an effience for each configuration could be determined. It was found that ??????????????. It was also found that the experimental procedure could be improved in the future by introducing a few addition variables. This conclusion ?????????????? agrees with. One example could be using different fluid mediums with different heat transfer coefficients . This would allow for addition insight into the optimization of heat exchangers by changing the fluid. Another potential improvement in the laboratory would be testing multi-pass heat exchangers because many industrial applications require heat exchange rates beyond what one line can generate. Introduction One of the fundamental concepts of thermodynamics is that energy will always flow from a warm body to a colder body. However, the rate at which the heat transfer occurs varies greatly depending on numerous parameters. Variables such as the materials involved, ambient temperature, mass flow rate and the temperatures of the interacting bodies all play an important part in determining the net heat transfer. One important thermal device is the heat exchanger. This is a device whose sole purpose is to transfer thermal energy from one fluid to another. They are important because they enable a working fluid to maintain a relatively stable temperature through the removal or addition of thermal energy from the other fluid. Knowing and controlling the temperature of the working fluid enables consistent and efficient operating parameters of the entire mechanical device. One example of heat exchanger importance is in the intern combustion engine. Controlling heat generated during combustion extends engine life, and allows fro proper engine cooling. Another example of heat exchanger utilization is in electric vehicles
Background image of page 2
where thermal management of advanced batteries is important to allow for peak efficiency and longer limits between charges. In this experiment the main focus is the concentric tube heat exchanger. This is one of the most simple, yet widely used configurations which consists of a small inner tube which resides in a larger diameter outer tube. When the fluid flow of the two mediums is uni-directional it is referred to as a parallel-flow heat exchanger (Figure 1). Figure 1: Parallel flow heat exchanger
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/15/2009 for the course MAE 3183 taught by Professor Staff during the Spring '08 term at UT Arlington.

Page1 / 11

Heat exchanger WRITE UP - Matthew Callesen Daniel Roberts...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online