Application of fuzzy logic expert system in predicting cold and hot fluid outlet temperature of counter-flow double-pipe heat exchanger

Author(s):  
M. Sridharan
2019 ◽  
Vol 5 ◽  
pp. 34-40 ◽  
Author(s):  
M. Sridharan ◽  
R. Devi ◽  
C.S. Dharshini ◽  
M. Bhavadarani

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Putu Wijaya Sunu ◽  
I Putu Darmawa ◽  
Anak Agung Ngurah Bagus Mulawarman ◽  
I Made Suarta ◽  
I Putu Gede Sopan Rahtika

Karakteristik perpindahan panas pada grooved double pipe heat exchanger  diteliti secara experimental. Penelitian ini bertujuan untuk mengungkap fenomena karakteristik temperatur fluida dingin pada proses perpindahan panas pada heat exchanger . Dalam penelitian ini, digunakan air sebagai fluida panas dan dingin dengan pola aliran counter flow dan laju aliran sama untuk kedua fluida yaitu 15 lpm. Groove diposisikan pada daerah annulus yaitu pada dinding luar tube dengan bentuk rectangular dan pola circumferential.  Karakteristik dimensi groove yaitu dalam tinggi groove adalah 0,3 mm; jarak antar groove adalah 8 mm; dan lebar groove sebagai variabel bebas yaitu 1 mm dan 2 mm. Temperatur fluida panas yang digunakan adalah 50 ± 0,50C sedangkan temperatur fluida dingin adalah 30 ± 0,50C. Data hasil pengukuran temperatur pada sisi masuk dan keluar penukar kalor dengan lebar groove 1 mm dan 2 mm dibandingkan untuk mengetahui karakteristik peningkatan temperatur fluida dingin. Pada penelitian ini digunakan metode laju temperatur dan akselerasi temperatur untuk membandingkan variabel dalam penelitian ini. Hasil penelitian ini mengungkap bahwa pemasangan groove meningkatkan jumlah kalor yang mampu diserap fluida dingin. Heat exchanger  dengan lebar groove 1 mm, mampu menyerap panas ±2,3 % lebih baik dibandingkan dengan heat exchanger dengan lebar groove 2 mm.


2013 ◽  
Vol 671-674 ◽  
pp. 2563-2566
Author(s):  
Li Bai ◽  
Tan Liu

The double-pipe heat exchanger device is used for simulating sewage water heat exchanger. The double-pipe heat exchanger system with the sewage water flow in the inner tube and intermediary (tap) water flow in the annular tube. The pt100 thermometer measure inlet and outlet temperature of sewage water and intermediary water. According the debugging temperature data, the error of double-pipe device heat transfer coefficient ΔU/U≤±20%.It is proved that the double-pipe system is feasible to monitor the fouling resistance dynamically.


2021 ◽  
pp. 300-300
Author(s):  
Sobhanadri Anantha ◽  
Senthilkumar Gnanamani ◽  
Vivekanandan Mahendran ◽  
Venkatesh Rathinavelu ◽  
Ramkumar Rajagopal ◽  
...  

The inclusion of baffles in a double pipe heat exchanger is becoming increasingly important as it improves the heat exchanger's performance. CFD analysis is used in this paper to investigate the performance of double pipe heat exchangers with and without helical baffles on both shell tube sides. The 3D Computation Fluid Dynamics (CFD) model was created in Solid Works, and the FloEFD software was used to analyze the conjugate Heat Transfer between the heat exchanger's tube and shell sides. Heat transfer characteristic like Outlet temperature of shell and tube are investigated along with pressure drop on shell and tube side. Based on CFD results of Double Pipe Heat exchanger with helical baffle on both shell side and tube side (Type 4) gives the better results than the other type of heat exchangers with an increased pressure drop than the others, results reveals that type 4 outlet temperature of shell side is 8% higher and on tube side it is 5.5% higher, also pressure drop on shell side is 12% higher and on tube side it is 42% higher than the other types.


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