ABSTRACT Coconut milk is a valuable food ingredient in Indonesia that can be preserved by Spray Drying to produce coconut powder. This study evaluates the performance of a Cyclone Separator, which is crucial for separating the powdered product from the air stream. Numerical simulations were conducted using the Discrete Phase Model (DPM) and the Reynolds Stress Model (RSM) at two air flow rates…
ABSTRACT Aloe vera is known for its various health benefits; however, its high water content requires proper post-harvest processing to preserve nutritional quality. One effective method is vacuum freeze drying, which maintains product quality but suffers from low energy efficiency. This study investigates the use of Thermal Energy Storage (TES) to recover and reuse waste heat from the condens…
ABSTRACT This study aims to analyze the performance of an internal combustion engine using hydrogen gas produced through electrolysis as a supplementary fuel. Hydrogen was generated using an alkaline electrolyzer with NaOH electrolyte at various concentrations and current intensities. The experiment was conducted on a 97 cc four-stroke gasoline engine, with performance parameters including eff…
ABSTRACT Riau Province is the fourth-largest emitter of greenhouse gases in Indonesia (Ministry of Environment, 2023). To address this issue, fossil fuels are being replaced with hydrogen as an alternative energy source. Naturally occurring hydrogen can be derived from water, fossil fuels, and biomass. One method of hydrogen production is water electrolysis, which separates hydrogen and oxygen…
ABSTRACT Maintenance and care of machine components in the oil and gas industry is one of the main factors. One of the problems faced in maintenance is the difficulty of lifting and moving the atomizing air precooler heat exchanger on the gas turbine generator because of its position in a narrow space and its weight reaches 600 kg. Therefore, this study aims to design a Portable Gantry Crane t…
ABSTRACT Food waste is a global issue caused by the decline in food quality due to improper storage. This study aims to evaluate the power consumption and calculate the Coefficient of Performance (COP) of a Smart Food Container using a Thermoelectric Cooler (TEC) and Heat Pipe based on the Internet of Things (IoT). The system is designed to maintain food temperature under both cold and warm co…
ABSTRACT Unmanned aerial vehicles (UAVs), commonly known as drones, have rapidly evolved and are widely utilized in various sectors, including mapping, surveillance, irrigation, and cargo transportation. One of the key components that significantly affects a drone's performance is the propeller, which is responsible for generating lift and torque to maintain stability and maneuverability in th…
ABSTRACT The development of sustainable energy needs demands innovation in the electricity generation system that is not only efficient, but also environmentally friendly and economical. Generator sets (gensets), although commonly used as backup power sources, still rely on fossil fuels that have a number of limitations such as high operational costs, emission pollution, and dependence on …
ABSTRACT The activity of moving goods or materials from one place to another is one of the important aspects that affect the overall efficiency and productivity in a factory. The designed mobile belt conveyor has a capacity that functions to move palm shell material to the screening machine. Therefore, a mobile belt conveyor design that has high flexibility and mobility is needed. And the …
ABSTRACT The Gardapati Prototype vehicle is a specially designed car aimed at achieving high energy efficiency. This study aims to analyze the steering and braking systems of the Gardapati Prototype vehicle using the Design for Assembly (DFA) approach. DFA is a method used to evaluate and simplify product designs to improve manufacturing and assembly efficiency. The analysis in this study foc…
ABSTRACT Indonesia is one of the largest coconut producers in the world, with coconut milk being one of its high-value derivatives. However, coconut milk is highly perishable and prone to degradation. To improve shelf life and product stability, the spray drying method is employed to convert liquid coconut milk into powder. Nevertheless, this process often encounters challenges such as wall de…
ABSTRACT Spray drying is an effective method to convert liquid coconut milk into powder; however, conventional cyclone separators still face challenges in particle separation efficiency due to re-entrainment phenomena. This study aims to design and analyze the performance of a cyclone separator modified with a Circumfluent Cyclone (CFC) configuration and the addition of a Convergent Vortex Fin…
ABSTRACT Spray drying is a widely used drying method to convert liquid feed into powder, especially for heat-sensitive materials such as coconut milk. However, this process often encounters the issue of wall deposition, where particles adhere to the drying chamber walls, reducing drying efficiency and product quality. This study aims to analyze the temperature and airflow velocity distribution…
ABSTRACT Lemang is a traditional Indonesian food cooked by roasting glutinous rice in bamboo over an open fire. The manual roasting process requires a long duration and constant attention to ensure even cooking, often resulting in inefficiencies and uneven doneness. To address these issues, a closed-type rotary lemang roasting machine was designed and developed in this final project. The aim o…
ABSTRACT This research aims to design and develop a pesticide sprayer in the form of a trolley sprayer using a 2-stroke engine. This tool is designed to increase the efficiency of pesticide spraying in agricultural areas, especially in hard-to-reach locations. With a capacity of 70 liters, this trolley sprayer is expected to provide a wider spraying area than a hand-held sprayer with a manual …
ABSTRACT Coconut plants (Cocos nucifera L.) are multipurpose plants where all parts of the plant can be used to meet human needs. Coconuts have a strategic role in the national economy.In the process of peeling coconut skin, many still use manual methods and some also use coconut peeling machines. But there are still shortcomings in peeling young coconut skin. Therefore, a revision of the mech…
ABSTRACT Sand is an important material in the construction industry, but it often contains impurities such as gravel and clay that reduce its quality. Manual screening is still widely used, but this method is inefficient and requires a lot of labor. To overcome these obstacles, a sand screening machine with a rotating system was planned and manufactured that can increase the efficiency and qua…
ABSTRACT Sand is an important material in the construction industry, but it often contains impurities such as gravel and clay that reduce its quality. Manual screening is still widely used, but this method is inefficient and requires a lot of labor. To overcome these obstacles, a sand screening machine with a rotating system was planned and manufactured that can increase the efficiency and qua…
ABSTRACT The manufacture of ship propellers is one of the important aspects in the shipping industry. because it functions as the main propulsion of the ship in the water. The efficiency and durability of the propeller greatly affect the overall performance of the ship. Therefore, the selection of the right materials and manufacturing processes is a key factor. The methodology consists of seve…
ABSTRACT Coconut plants (Cocos nucifera L.) are multipurpose plants where all parts of the plant can be used to meet human needs. Coconuts have a strategic role in the national economy.In the process of peeling coconut skin, many still use manual methods and some also use coconut peeling machines. But there are still shortcomings in peeling young coconut skin. Therefore, a revision of the mech…