ABSTRACT Rainfall measurements at each observation station are point rainfall data, which are considered representative of rainfall for a certain radius. Due to high establishment and operational costs and difficult topography for mountainous areas, the number of rain observation stations is limited. Overcoming the lack of rain stations to provide reliable rainfall data can be achieved by usin…
ABSTRACT Piping systems are an important part of many applications. Piping systems may be subject to damage such as blockages. Therefore, it is important to detect blockages in pipes. One way is by using ultrasonic imaging technique. In this research, a set up and test method for detecting and imaging blockages in pipes, and identifying the shape and position of the blockage using ultrasonic s…
ABSTRACT Wind turbines are windmills that are used to generate electricity. The basic principle works, namely converting the mechanical energy from the wind into rotational energy, then the rotation of the mill is used to rotate the generator, which in turn will generate electricity. Over time, many turbine innovations have been used. Innovation can be done by fixing existing deficiencies or ad…
ABSTRACT In the manufacture of latex finished goods, the water content that is too high in the latex greatly disrupts the vulcanization process. Therefore, some of the water first needs to be removed to obtain concentrated latex with a dry rubber content (KKK) of 55% -60%. Meanwhile, in the centrifugation method, the equipment investment costs are very expensive. Besides the high price, the ca…
ABSTRACT Tribology is the science that deals with friction, wear and lubrication on surfaces in the relative motion of objects. In machining mechanical contact is unavoidable regarding friction and wear. Mechanical contact that occurs will result in wear and tear between the two surfaces of the elements that touch and move. Friction is the loss of energy due to the occurrence of two objects th…
ABSTRACT This study aims to measure the value of Overall Equipment Effectiveness (OEE) and Failure Mode Effect Analysis (FMEA) of sterilizer machines to analyze the productivity of sterilizer machines at PTPN V Sei Galuh. Overall Equipment Effectiveness (OEE) is a method of measuring the effectiveness of using an equipment. By using the OEE method, companies can make improvements to parts that…
ABSTRACT In this research, a clothes dryer machine was studied using an Air Conditioner (AC) with a closed air cycle vapor compression system and using a room fan. This study aims to improve electrical energy efficiency, determine the performance of a clothes dryer, the speed of drying clothes and to compare the performance and the comparison of the rate of drying clothes with a room fan and n…
ABSTRACT The pin on disc type tribometer is a tribometer that works with a mechanism using pins and flat plate components that are partly in contact with each other. The disc will rotate and the pins will press against the surface of the disc due to the applied load. The disc-on-disc type tribometer is the contact that occurs between the roller element (solid cylinder) and the inner ring on the…
ABSTRACT One of the uses of biomass as fuel for households or industries is biomass pellets (Biopelets). Biopellets are a type of waste-based solid fuel that is smaller than briquettes. Biopellets or pellets derived from biomass are converted and can be used as fuel energy. In this research, the design of a vertical type biopellet printing machine was carried out and the structural analysis of…
ABSTRACT This final project aims to design a plastic type waste crushing machine which is expected to provide a solution to overcome the ever-increasing amount of waste. Plastic itself is a type of waste non-organic which is difficult to decompose. The method used in designing is Hatamura. The Hatamura method consists of several processes, namely requirements selection, specification selection…
ABSTRACT Pyrolysis is a process of thermochemical decomposition of solid materials into solid, liquid and gaseous forms through endothermic reactions. Therefore, the design of a pyrolysis reactor is very important so that the pyrolysis temperature can be reached so that products that can be used are formed, including charcoal, bio oil, and flammable gas.Modern human life depends on the energy …
ABSTRACT The rate of population growth in Indonesia every year is categorized as high, this causes a greater need for the use of water consumption which is in line with the amount of domestic wastewater produced. Domestic wastewater contains high organic matter, so it can reduce water quality if it is directly discharged into water bodies without prior treatment. One alternative treatment …
ABSTRAK Sago pulp is waste from the sago processing industry which is processed into sago flour and has the potential to be used as an alternative energy fuel. In this study, sago waste can be used as charcoal briquettes. Charcoal briquettes are made through several stages, namely composing, mixing with adhesive, pressing, and drying. Characteristics of the quality of briquettes include mo…
ABSTRACT SMK Labor Assisted by FKIP Universitas Riau is an educational institution that in its operations already uses a computer network, where there is more than one labor connected to the school's internal network. Based on identifying problems when conducting interviews and direct observation to find out the network security system at SMK Labor. From the interview with the network controll…
ABSTRACT Coins are used in everyday life in various places such as in banks, supermarkets and automatic weighing machines. So, there was a basic need to automate coin counting and sorting. For these machines it is necessary to recognize coins very quickly and accurately, because further transaction processing depends on this recognition. Banks use money counting machines to count money. It can…
The FEMA P-58-5 method is a method used to evaluate the performance of a building structure using a probability approach. based on the output obtained from PET (Performance Estimation Tools). The purpose of this research is to obtain the performance of the building structure simulated by the influence of the planned earthquake (2017 Earthquake Hazard Map). This research is using the provis…
The need for hot water in everyday life is indispensable for industrial, hospital and household needs, due to the large demand for hot water, one idea emerged, namely a heat pump water heater assisted by solar energy which was designed which mainly consists of an evaporator panel with a surface area of 0.23 m2, a rotary compressor with an input power of 1/6 PK, an insulated water tank which has…
With the fulfillment of electricity needs, the standard of living of the community will increase, uneven population distribution and difficult access are one of the causes of an area not being electrified by PLN. One solution that can be used so that electricity needs are met is to utilize water energy in irrigation canals as an energy source. The obstacles faced in this process are the low…
The presence of peatland in Indonesia has an important role for the sake of environmental perseverance globally. Land fire does not only occur in dry land, but also in wet land. Rokan Hilir Regency is the contributor of forest fire and peatland fire until peatland degradation in Rokan Hilir Regency continues to occur. The problem analyzed in this research was analyzing the hotspot data, the…
The rapid development of carbon-based two-dimensional nanomaterials has attracted the attention of researchers who are working on developing new materials with unique properties, one of which is graphene. As graphene continues to develop, researchers are persistently exploring various synthesis methods to produce high-quality graphene (with minimized layers and defects) in an economical ma…