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To perform an energy balance across a shell and tube exchanger and calculate the overall efficiency at different fluid flow rates 3. All fluid connections to the heat exchanger are self-sealing quick connectors - for safety … ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Heat transfer analysis of a shell and tube heat exchanger operated with graphene nanofluids. By continuing you agree to the use of cookies. One fluid passes through the shell, and the other fluid passes through the tube bundle, therefore transferring heat.
The general equation for heat transfer across the tube surface in a shell and tube heat exchanger: q = Uo Ao ∆ Tm = Ui Ai∆ Tm (3) where, Ao = outside area of the tube (m2) Ai = inside area of the tube (m2) ∆ Tm = mean temperature difference (°C) Uo = overall heat transfer coefficient based on the outside area of the tube (kWm-2°C-1) Ui = overall heat transfer coefficient based on the inside area of the tube (kWm … The stream to be cooled enters the tube side and is distributed amongst the tubes shown with red arrows. We use cookies to help provide and enhance our service and tailor content and ads. The experimental setup of a vertical single-pass shell and tube heat exchanger consists of, a cylindrical glass shell of 7.5 cm inside diameter with 1 cm wall thickness, seven stainless steel tubes of 20.5 cm length with an outer diameter of 4.76 mm and tube wall thickness of 0.6 mm.
An in-house-designed undergraduate laboratory experiment for hands-on experiential learning of heat transfer in shell-and-tube heat exchangers is described. Furthermore, the mean thermal efficiency of the heat exchanger was enhanced by 13.7% by using graphene/water nanofluid. Graphene flakes were prepared using graphite foam that is derived from sugar as a raw material.
Most shell-and-tube heat exchangers have multiple “passes” to enhance the heat transfer. The graphene nanofluid has been used in the tube side of the heat exchanger to enhance its heat transfer performance. By continuing you agree to the use of cookies. �. Shell and tube heat exchanger design is an iterative process, which goes through the following steps. View desktop site. 2. © 2017 Institution of Chemical Engineers. |
© 2003-2020 Chegg Inc. All rights reserved. Flow Direction Flow Rate (hot Stream) Tube Inlet Temp (deg C) Tube Outlet Temp (deg C) Shell Inlet Temp (deg C) Shell Outlet Temp (deg C) Countercurrent 4 L/min 54.9 42 27.9 38.8 No. https://doi.org/10.1016/j.ece.2017.03.002. The laboratory experiment affords the student to develop and improve their report-writing as well as soft skills, such as leadership abilities and team-work. The experimental setup of a vertical single-pass shell and tube heat exchanger consists of, a cylindrical glass shell of 7.5 cm inside diameter with 1 cm wall thickness, seven stainless steel tubes of 20.5 cm length with an outer diameter of 4.76 mm and tube wall thickness of 0.6 mm. Terms A laboratory experiment for demonstrating heat transfer in a shell-and-tube condenser has been described. Copyright © 2020 Elsevier B.V. or its licensors or contributors. chemical engineering questions and answers. What is the difference between these 2 calculations?
Published by Elsevier Ltd. https://doi.org/10.1016/j.csite.2020.100584. ENGINEERING LABORATORY MANUAL for ENGR3930U-Heat Transfer Experiment # 4 Shell & Tube Heat Exchanger
Capabilities Of The Shell and Tube Heat Exchanger Unit 1.
An in-house-designed undergraduate laboratory experiment for hands-on experiential learning of heat transfer in shell-and-tube heat exchangers is described. ً�몕�PH���5�b� �f����SF� W@�������@\�D��@Ԍ��N�~�'粂�̵!G�2df6|�����J. One of many applications of nanofluids is the enhancement of the thermal performance of heat exchangers. I am doing an experiment on a shell-and-tube heat exchanger and
The design affords convective heat transfer inside the tubes and condensation heat transfer outside the tubes. &
We use cookies to help provide and enhance our service and tailor content and ads. Nanofluids have attracted huge attention because of their effective physical and thermal properties. Experimental measurements are used to estimate the overall heat transfer coefficient at varying flow rates of the cold fluid, which is compared with that obtained from calculations using correlations available in the literature. The Service Module (TD360) provides hot and cold water to the heat exchanger and all the instruments needed to measure its performance. As you can see, in a 12 heat exchanger, the tube- -side fluid flows the entire length of the shell… The practical application of the theoretical principles of heat transfer has been demonstrated. ��ࡱ� > �� d f ���� c i � M �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� %` �� �p bjbj"x"x .v @ @ g �� �� �� � � � � � $ $ $ 8 �N �N �N 8 �N t lO � 8 }� � LP � (Q >Q >Q >Q �^ �^ �^ ʗ ̗ ̗ ̗ ̗ ̗ ̗ � h �� � ̗ 9 $ �_ \ � �^ �_ �_ ̗ � � >Q >Q � This feedback indicated that the vast majority of the students had an overall positive experience of the laboratory course, as it provided them with the opportunity of teamwork, leadership role, the spirit of industrial experience, and the ability to develop skills related to heat exchanger calculations. It is effective in helping undergraduate students in understanding the concepts and applications of heat transfer by convection and condensation. The experiment allows the student to identify and evaluate the factors that affect the rate of heat transfer in a shell-and-tube heat exchanger. Published by Elsevier B.V. All rights reserved. As you can see, in a 12 heat exchanger, the tube- -side fluid flows the entire length of the shell…
below is the data I obtained. The stream that cools the liquid is shown in blue enters on the shell-side and flows perpendicular to the tube bundle for maximum heat transfer. Baffles around the bundle help to create a turbulent mixed flow.
This experiment was conducted to evaluate and study the performance of the shell and tube heat exchanger heat load and heat balance, LMTD, overall heat transfer coefficient, Reynolds shell side and tube side, heat transfer coefficient and pressure drop at shell side and tube side. A basic schematic for a single pass shell-and-tube heat exchanger is shown in Figure 1. both theoretical U using empirical correlation and How do I calculate the overall heat transfer coefficient, U, for experimental U?
In the current study, an experimental investigation has been conducted for studying the effects of graphene nanofluids on the convective heat transfer in a vertical shell and tube heat exchanger. Here is an example of a 1-2 (1 shell pass and 2 tube passes) heat exchanger. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. A heat-transfer laboratory experiment with shell-and-tube condenser. Here is an example of a 1-2 (1 shell pass and 2 tube passes) heat exchanger. To demonstrate indirect heating or cooling by transfer of heat from one fluid stream to another when separated by a solid wall (fluid to fluid heat transfer). Copyright © 2020 Elsevier B.V. or its licensors or contributors. The results show that using of graphene/water nanofluids enhances the thermal performance of the vertical shell and tube heat exchanger. Define process requirements for the new exchanger Select a suitable type of shell and tube exchanger Define design parameters such as - number of tube passes, tube size, shell ID etc.