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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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PROTOYPE HEAT EXCHANGER TYPE SHELL AND TUBE DITINJAU DARI VARIASI JARAK BAFFLE DAN LAJU ALIR MASSA UDARA PANAS Marawijaya, Gede; ., Tahdid; Trisnaliani, Lety; Purna, Candra
KINETIKA Vol. 10 No. 1 (2019): KINETIKA 01032019
Publisher : Politeknik Negeri Sriwijaya

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Abstract

The use of heat exchangers in the industrial world is very widely used both to reduce or where the temperature is in accordance with the needs of various products. The development of technology and science causes heat exchangers to experience various transformations. In its development, the heat exchanger undergoes a form transformation which aims to improve efficiency in accordance with its work function. The form of heat exchanger that is often used is shell and tube. The process in the heat exchanger type of shell and tube is by flowing the hot fluid in the tube and cold fluid in the shell with the type of cross flow flow. In the heat exchange process of shell and tube type heat exchangers, there are several things that need to be considered to obtain the effectiveness of maximum heat transfer, including the type of fluid, flow rate, temperature, heat transfer rate, pressure drop, shell dimension and tube (pipe), baffle distance, pitch distance, tube arrangement, and material type. The influence of various factors can be seen from the effectiveness and efficiency produced. Effectiveness of the highest heat transfer at variations in baffle distance of 15 cm is 82,13% and the highest efficiency at mass flow rate is 45 kg / hour which is 85,27%.
PENGARUH LEVEL KETINGGIAN AIR TERHADAP EFFISIENSI THERMAL PADA CROSS SECTION WATER TUBE BOILER MENGGUNAKAN GAS DAN SOLAR PRODUKSI SATURATED STEAM PROSES KONTINYU Saputra, Ardian; Putra, Febbial Pratama; ., Tahdid; Manggala, Agus; ., Zurohaina
KINETIKA Vol. 11 No. 2 (2020): KINETIKA 01072020
Publisher : Politeknik Negeri Sriwijaya

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Boilers are used to lower the temperature of the gas and diesel passed through the tubes, and to separate the fluid between the gas phase (water vapor) and the liquid phase (water). In the Boiler water feedback system, a controller is needed that is able to maintain the stability of the water level. The boiler used often has problems that cause less than optimal steam results. The problem that occurs is usually at the level of the water level with the fuel which causes the combustion results to be not optimal and has an impact on the steam produced to be not optimal. Therefore, this research will focus on determining the most appropriate water level with natural gas and diesel fuel so that maximum combustion results are obtained. The tube will also be installed vertically with a slope of 65ËšC with the aim of increasing heat transfer to the boiler and accelerating the evaporation of water molecules which are expected to produce more optimal steam. The parameters observed were temperature, pressure, and the temperature of the combustion flame, the aim was to determine the effect of air on fuel gas and diesel on the speed of temperature and pressure increase. The results of the research show that the optimal water level is the 5th condition (70%) because it can produce saturated steam according to the Efficiency target with a constant state in a continuous process using diesel and gas fuel.
Co-Authors ., Zurohaina Ardian Saputra, Ardian Lety Trisnaliani Manggala, Agus Marawijaya, Gede Purna, Candra Putra, Febbial Pratama