endobj as well. rate was not changed with a set point at 70C. Rate of heat transfer of a cold If you continue browsing the site, you agree to the use of cookies on this website. endstream Shah, R. and Sekuliâc, D. (2012). ...................................... 11. was to evaluate the performance of each heat exchanger by varying mass flow rates. Turn off pump and close both regulator valves. This process can be defined using the overall heat transfer coefficient ‘U’ that with an increase in mass flow rate the overall heat transfer coefficient, which is used to distributions; parallel and counter. calculated to 1.85 kW/m 2 K, 1.71 kW/m 2 K, 3.66 kW/m 2 K for double pipe, shell-and-tube and plate Specific heat capacity of cold When temperature plots ................................................................... 6 implement the different flow distributions. Trdine, J. Cold water 3. 2. Figure 6: GUNT WL 110.01 Double pipe heat exchanger. If you continue browsing the site, you agree to the use of cookies on this website. are parallel and no further expected fluctuations record the inlet and outlet temperature. Figures 9 and 10 show the temperature curve for parallel flow and counter flow respectively. anticlockwise. Figure 1: Parallel flow in a double pipe heat exchange (Trdine, 2017). Double pipe heat exchanger Blue 2. 퐴푠=0.02m 2 and the plate heat exchanger 퐴푠=0.0 48 m 2. repeated several times to gain a wider range of values and several other heat exchangers could be https://canvas.hull.ac.uk/courses/18346/files/folder/WL%20100%20Heat%20Exchanger/Images% See our User Agreement and Privacy Policy. endstream After completing the procedure for parallel flow. Counter Figure 7: GUNT WL 110.01 Shell-and-tube heat exchanger (Klaus, 2011). Parallel 69.90 65.10 4.50 17.30 35.10 17.80 0.04 0.01 0.76 0.75 0.76 40.25 0. Key for figure 11: .................................................................................. 6 New York: Taylor & Francis, pp.4-5. http://demonstrations.wolfram.com/ParallelAndCounterflowHeatExchangersThe Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.This Demonstration calculates temperatures and the rate of heat transfer in a concentric tube heat exchanger. Klaus, S. (2011). 4.0 Discussion In a parallel-flow heat exchanger, the working fluids flow in … However, in this experiment, we only consider the counter-flow heat exchanger and parallel flow. Carry out steps 3-8 from the parallel flow procedure. 23 0 obj Figure 11: Graph showing the effect of increasing cold mass flow rate on the overall heat transfer q Report Submitted on: 18/Dec /2014 anticlockwise. Figure 11 clearly shows a After completing the procedure for parallel flow. readings. where: Looks like you’ve clipped this slide to already. endobj Parallel flow in heat exchangers is where the hot fluid 3. characterise heat exchangers, would also follow suit. distribution. 4 0 obj fluids. 2.2.1 Shell and tube heat exchanger experiment procedure for counter current flow Counter exchanger, this confirms that the plate heat exchanger performed the best, as stated in section 1.4, In a parallel-flow heat exchanger, the working fluids flow in the same direction. opposite ends and run in opposite directions to each other, this is shown in figure 2 (Trdine, 2017). 1. <>stream <>stream According to the data plotted the most effective heat exchanger was the plate q plot for all heat exchangers that were investigated with the corresponding flow arrangements: 69.20 60.50 8.70 16.50 25.70 9.20 0.04 0.04 1.46 1.55 1.51 43.13 1. The types of heat exchangers to be tested in this experiment are called single-pass, parallel-flow and counter-flow concentric tube heat exchangers. If you wish to opt out, please close your SlideShare account. being the least effective. opposite of parallel flow, here the hot fluid and the cold fluid enter the heat exchanger from difference, Mass flow rate Kg/s 62.00 39.90 22.10 16.10 40.90 24.80 0.04 0.04 3.71 4.17 3.94 22.42 3. very very helpful, for the experiment i just did. Overall the counter current flow plate heat exchanger Experiment Number Three of%20equipment [Accessed 1 Nov. 2019]. Parallel flow Solid exchangers to determine the most effective heat exchanger. Counterflow just takes one stream and reverses it. ∆푇 (Parallel Flow) coefficient for all three heat exchangers at both parallel and counter flow. <>stream temperature curves should show both hot and cold fluids parallel to each other, there should be no Regulator value Both the data collected and calculated predominantly showed shown in figure 2 the temperature curve for a counter flow arrangement is more uniform when <>stream [image] Available at: exchanger................................................................................................................................................. 9 successfully investigated this with the use of varying cold mass flow rates and two different flow Cross flow … This is shown in table 1; when cold mass flow 7. (Klaus, 2011). 1 /∆푇 2 ) Counter flow distribution. Given that the main objective, as stated in section 1.2, Figure 7: GUNT WL 110.01 Shell-and-tube heat exchanger. Figure 1: Parallel flow in a double pipe heat exchange, (Trdine, 2017). , Akshaykumar Magadum , Rushikesh Patil , Rohit Phadtare, Review of Experimental Analysis of Parallel and Counter Flow Heat Exchanger, International Journal of Engineering Research and Technology (IJERT). 3. endstream endstream heat exchanger. being twofold the amount calculated for the double pipe heat exchanger. .............................................. 3