Perancangan Ketel Uap Mini Untuk Proses Pemanasan Sistem Pada Industri Tahu Sesuai Standar American Society of Mechanical Engineers Menggunakan ANSYS

Abstract

The boiling process in small-scale tofu production is still often done using conventional methods, namely with a pan and a direct heat source. Additionally, they are fuel-intensive, using firewood, which can significantly increase production costs. The objective of this design s to create a vertical fire tube boiler construction that produces saturated steam at temperatures of 100°C-120°C, generating 280 kg/hour of steam in compliance with American Society of Mechanical Engineers (ASME) standards, using wood as fuel. This research involves the design of a steam boiler in the tofu industry, including the construction of a steam boiler in accordance with ASME standards, the design of the steam boiler in inventor software, and the structural analysis of the steam boiler as the research subject, with a focus on displacement and stress in the boiler's construction using ANSYS software. The results of this data analysis will reveal the strengths and weaknesses of the proposed design. The steam boiler has an inner body diameter of 1200 mm with a thickness of 4.5 mm. The steam capacity is 140 kg per 30 minutes or 280 kg/hour, with a fuel requirement of 47.8 kg/hour, operating at a steam pressure of 2 bar and a design pressure of 6 bar. The material used s stainless steel 304. Based on the ANSYS simulation conducted at a temperature of 120°C, with a steam load of 1,626 N, water load of 8722 N, water pressure of 588.52 N/m², steam pressure of 0.205 N/m², and gravity of 9.81 m/s², the maximum von Mises stress value is 5.4381 x 10^7 N/m², maximum displacement s 0.37908 mm, maximum temperature is 110.05°C, and the safety factor is 3.769.