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Journal : JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY

Analysis of Fouling Factors on Heat Transfer in Shell and Tube Heat Exchangers Type 1-2 Pass Aditya, Yudi; Irwansyah; Weriono; Indra Hermawan; Idris, Muhammad
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.6237

Abstract

A heat exchanger is a device that is used to change the temperature or fluid phase by absorbing or releasing heat between the hot fluid and the cold fluid. One type of heat exchanger that is most widely used in industry is shell and tube. Optimal heat exchanger performance has an important role to support production stability in various industries. The performance of shell and tube heat exchangers is affected by fouling factors which are the formation of deposits on the surface of the heat exchanger which can inhibit heat transfer and increase the resistance to fluid flow in the heat exchanger. After analysis, it is known that the mass flow rate of the flue gas is 0.06523 kg/s, the effectiveness of the heat exchanger is 66.837%, the overall gross area is 3.317350717 m2, and the effective heat transfer area is 2.211567145 m2.
Analysis of the Effectiveness of Condenser Heat Transfer in the Distillation Process of Serai Wangi Leaves Karo Karo, Septa Fernando; Weriono; Din Aswan Ritonga; Darianto, Darianto; Muhammad Idris; Indra Hermawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.6401

Abstract

The condenser is a critical component in systems designed to condense steam into liquid. The performance of a condenser can be influenced by the rate of heat transfer, vacuum pressure, and effectiveness. The aim of this research is to ascertain the effectiveness value and the variables affecting the performance of the condenser in the distillation process of citronella leaves, as well as to understand the impact of the heat transfer rate on film condensation (condensate steam mass). The methodology for assessing effectiveness values utilized the Log Mean Temperature Difference (LMTD) and Effectiveness – Number of Transfer Unit (NTU) approaches, alongside comparing the condensate steam mass with the steam mass flow rate to achieve film condensation. The research findings revealed an effectiveness value of 89% for the condenser, with 36% of the condensate steam mass converting into bio-oil. Influential variables include a capacity ratio of 0.0182840 and a heat transfer rate of 186,544.68 W. The LMTD was calculated to be 29.74°C. Thus, it can be concluded that the condenser used in the distillation process of citronella leaves still maintains good performance.