Pengaruh Variasi Temperatur Fluida Masuk Terhadap Efektivitas Heat Exchanger Shell And Tube Dengan Menggunakan Nanofluida TiO2
In the development of the industry, heat transfer is one of the main factors in the work process, because all machines that work in industry work on average at high temperatures. One of the machines that are often used is the shell and tube heat exchanger. Utilization of shell and tube heat exchangers is increasing, especially in oil refineries, power plants, chemical plants and others. The addition of nanofluids to fluids used in shell and tube heat exchangers is one way that can be used to increase the thermal conductivity of fluids at high temperatures. The purpose of this study was to determine the effect of temperature variations on the rate of heat transfer and the effectiveness of the shell and tube heat exchanger. The tools used in this research are shell and tube heat exchanger and nanofluid with a volume fraction of 3% nanofluid. The purpose of this study was to determine the effect of variation temperature on the rate of heat transfer and the effectiveness of the shell and tube heat exchanger. object of this experimental research is a shell and tube heat exchanger and nanofluids with in the volume fraction of nanofluids of 3%. The hot fluid is treated by giving different input temperatures variations 600C, 700C, 80ºC. The data obtained were then entered in a table calculated theoretically, and displayed in graphical form to see the effectiveness of temperature variations in shell and tube heat exchangers with 3% TiO2 nanofluid by volume fraction. The results of the study obtained the lowest effectiveness was obtained at a temperature of 60°C which was 4182,3888 Watt. Meanwhile, the the highest effectiveness at a temperature of 800C, the result 50% with a heat transfer rate of 7561,4488 Watt.
Keywords: shell and tube heat exchanger, temperature, nanofluids, titanium diokside,