scholarly journals RANCANG BANGUN MESIN POMPA AIR DENGAN SISTEM RECHARGING

2017 ◽  
Vol 5 (2) ◽  
Author(s):  
Komang Lingga Yana ◽  
Kadek Rihendra Dantes ◽  
Nyoman Arya Wigraha

ABSTRAK Pengembangan mesin pompa air dengan sistem recharging, bertujuan untuk mebantu maslah pendistribusian air pada daerah yang mengalami krisis energi. Mesin pompa air dengan sistem recharging ini mampu beroprasi dengan sumber daya dari baterai sehingga sangat hemat energi, ramah lingkungan dan mudah dibawa kemana saja karena dimensinya tidak terlalu besar. Penelitian ini menggunakan pendekatan fungsional dan pendekatan structural, dengan metode observasi,dokumentasi dan prototype. Data teknis mesin yang dibuat adalah, panjang 50 cm, lebar 28 cm, tinggi 35 cm, mesin berpenggerak motor dc 12 volt 2500 Rpm, transmisi 1:1. Hasil pengujian kinerja mesin didapatkan hasil sebagai berikut, tegangan yang dihasilkan 14 volt, arus yang dihasilkan 8 ampere, kapasitas air yang mampu dihisap 136,2 liter dengan pengoprasian mesin selama satu jam dan tanpa terjadi kerusakan komponen pada mesin pompa air dengan sistem recharging. Keberhasilan penelitian ini dapat menekan biaya oprasional untuk pendistribusian air pada daerah yang mengalami krisis energi, serta dapat mengurangi pencemaran lingkungan karena pengoprasiannya tidak menggunakan BBM dan listrik PLN. Kata Kunci : Kata Kunci : Kinerja, Mesin Pompa Air Dengan Sistem Recharging, Ramah Lingkungan Development of water pump machine with recharging system, aims to help the distribution of water in areas experiencing energy crises. Water pump machine with recharging system is able to operate with the resources of the battery so it is very energy efficient, environmentally friendly and easy to carry anywhere because the dimensions are not too large. This research uses functional approach and structural approach, with observation method, documentation and prototype. Engine technical data made is, length 50 cm, width 28 cm, height 35 cm, engine motor dc 12 volt 2500 Rpm, transmission 1: 1. Engine performance test results obtained as follows, the resulting voltage 14 volts, the resulting current 8 ampere, the capacity of water that can be sucked 136.2 liters with operating machine for one hour and without damage to the component on the water pump machine with recharging system. The success of this research can reduce the oprasional cost for the distribution of water in areas experiencing energy crisis, and can reduce environmental pollution because the operation does not use fuel and electricity.keyword : Keywords: Performance, Water Pump Machine With Recharging System, Environmentally Friendly

Author(s):  
Sutrisna Saputra ◽  
Karna Wijaya ◽  
Mudjijana

The problems facing the world, in relation to the increasing consumption of petroleum and its limited sources, as well as pollution by fuel-related gases, such as CO, have sparked research on the application of biogasoline as an environmentally friendly alternative fuel. Our research aimed to determine engine performance through mixtures of biogasoline and gasoline to measure torque, power, and fuel consumption rate, and to determine the effect of the mixture on the level of air pollution. The biogasoline used was previously prepared from cooking oil through a Cr-zeolite-catalyzed process. The testing methods on the fuel mixture as a working substance included engine performance and exhaust emission tests, applied to four-stroke engines with mixtures with gasoline and biogasoline ratios of 95:5, 90:10, and 85:15. The engine performance test results showed that the highest values of torque, power, and average effective pressure were of the fuel with a composition of 85:15. CO and HC, the two emitted gases with high toxicities, based on the air quality standard, should not be more than 5.5% by volume and 2400 ppm, respectively. In this research, the findings indicated that both substances, not exceeding 3.0% by volume and not more than 200 ppm, respectively, are safe and environmentally friendly.


2015 ◽  
Vol 76 (6) ◽  
Author(s):  
Mohd Shahrudin Mohd Alias ◽  
Nor Hayati Saad ◽  
Juri Saedon ◽  
Nor Hidayahti Hassan

Early stage of engine valvetrain noise improvement involves the implementation of Design of Experiment (DOE) specifically the Taguchi methodology to identify the optimum valvetrain parameters which resulted in significant noise improvement. The parameters are consist of seven controlled factors such as cylinder head tappet bore diameter, mechanical tappet diameter, valve spring load, camshaft exhaust and intake waviness together with tappet exhaust and intake clearance. The confirmation run which was previously completed yields the valvetrain noise level at 67.07db SPL by 1 meter distance in completed vehicle during idling condition. In order to satisfy the final quality of the optimal valvetrain, a test is carried out to validate the performance curve on a dynamometer according to benchmark specification. The objective of the test is to validate the optimal valvetrain based on the experimental result which minimum manufacturing target shall be achieved to indicate that the engine is operated within its intended design. The performance test was conducted at the manufacturing plant on an eddy current dynamometer which runs for 11 hours. As results, the performance are within the standard with approximate increased by 6.9% as compared with baseline valvetrain and confirmed by several follow-up tests made on the improved valvetrain. In order to verify and address the main engine output of the optimal valvetrain, brake specific fuel consumption (BSFC) and emissions test results are then presented at the end of this paper. 


Author(s):  
Ihor S. Diakunchak

The fully loaded factory test of the CW251B12 45 MW class industrial gas turbine is described in this paper. This gas turbine is the latest uprating of the W251 series of engines. The main objectives of the factory test were the verification of the performance and the mechanical integrity of the new engine model. A brief description of the main features of the engine, the application of the first unit, the test facility, and the engine instrumentation used in the test is included. Details of the engine performance test results, telemetry test data results, and the hot end component metal temperature measurements are provided.


Author(s):  
Ihor S. Diakunchak ◽  
David R. Nevin

The site performance testing of CW251B10 industrial gas turbine engines is described in this paper. A brief description is provided of the test procedure, the special instrumentation used during the test, and the derivation of the test tolerances. The test data analysis method and the associated correction curves and tables are described in some detail. Typical engine site performance test results are presented and compared to the original predicted engine performance.


1991 ◽  
Vol 113 (4) ◽  
pp. 482-487 ◽  
Author(s):  
I. S. Diakunchak

The fully loaded factory test of the CW251B12 45 MW class industrial gas turbine is described in this paper. This gas turbine is the latest uprating of the W251 series of engines. The main objectives of the factory test were the verification of the performance and the mechanical integrity of the new engine model. A brief description of the main features of the engine, the application of the first unit, the test facility, and the engine instrumentation used in the test is included. Details of the engine performance test results, telemetry test data results, and the hot end component metal temperature measurements are provided.


Author(s):  
Ihor S. Diakunchak ◽  
David R. Nevin

A fully loaded factory test of the CW251B10 41MW class industrial gas turbine was carried out at the Westinghouse Canada test facility. This gas turbine, which is the latest of the W251 engine series, represents an advancement in industrial gas turbine technology. One of the main objectives of the factory test was the verification of the engine performance. The test results demonstrated that the CW251B10 engine achieved its performance goals. This paper describes some of the results of the performance tests and includes engine component performance details.


2021 ◽  
Vol 11 (1) ◽  
pp. 10
Author(s):  
A. Ansar ◽  
S. Muttalib ◽  
R. Sabani ◽  
R. Kustina

During this time the process of making beberuk was still done traditionally using a mortar as a mixer, so that production is very limited, while the market demand is quite high. To increase productivity, it is necessary to design a machine that can increase the production capacity of the beberuk. The research method begins with the mixing machine design process, then continues with the assembly process and engine performance test. The design of the mixing machine is done with two approaches namely functional approach and structural approach. Test engine performance on 3 power variations namely 144, 168, and 192 watts and 3-time variations namely 30, 45, and 60 seconds. The results showed that the cylindrical mixing chamber has a diameter of 20 cm and a height of 50 cm. The mixing tube has a rectangular hopper with dimensions of 37 cm long and 9 cm wide. Engine performance test results showed the best results on 168 watts of power treatment and 30 seconds with the results of mixing not bubbly and still looks tomato chunks and is not too smooth according to the standard beberuk food.


2018 ◽  
pp. 48-51
Author(s):  
Sh.U. Yuldashev ◽  
D.T. Abdumuminova

The article provides an overview of the principle of the pump D630-90, as well as methods for studying the real conditions of technical support to improve maintainability and optimize technological processes and systems. A technological process for the restoration of the shaft of a centrifugal water pump has been developed and an algorithm for managing it has been proposed, on the basis of which the system for energy-efficient management of the recovery area has been implemented. Also in the article some questions of use, metal-filled compound SK812, and also application of ultrasonic processing of a surface of a shaft of the centrifugal water pump of mark D630-90 are mentioned and considered. The developed technological process of pump shaft restoration showed that it is characterized by simplicity, it fits well into the production process of repair and can be widely used in repair shops.


Author(s):  
Wirda Linda

This research is motivated by the low desire of students in writing travel reports. The lack of students' knowledge of the report concept, the lack of students' knowledge of the 5W + 1H report points of good and correct language, the lack of students' knowledge of the spatial, time and topic pattern and not yet reached KKM 75. The method used by the teacher has not been interesting, lecture method. The purpose of this study is to describe the skills of writing travel reports by using Round Club learning model which is viewed from the aspect of understanding the report concept, the use of 5W +1H report points, the spatial, time, and topic pattern.The population of this study is the students of class V Lessons Year 2017/2018 which amounted to 2 classes with the number 80. The sample of research as much as two classes taken by the sample of propotional.Class V.1 as experimental class and class V.2 as control class. The research instrument used is performance test. Provide an assessment by specifying the subject of the 5W + 1H report, as well as the spatial, time and topic pattern. Data were analyzed by 't' test by first testing normality, homogeneity, and hypothesis testing.The results showed that the average control class 68 with more than enough qualifications with standard deviation 16.96. 83 experimental class with good qualification and standard deviation of 15.42 and there is a significant influence on the result of writing skill of class V SDN 01 Nagari Bukik SikumpaSubdistrict, Lima Puluh Kota. This is evidenced by the average value of writing skills in the experiment class higher than the average value in the control class. Normality test results indicate that the two sample classes of  Lo  values in the control class -0.2141 are smaller than the normal 0.190 Lt distributed. Homogeneity test results that the variation of this study is homogeneous at a real level of 0.05, because Ftable 2.16 > Fhitung 1.21 and the results of data analysis then obtained = 2.78 > 1.70 t table, so H0 rejected and H1 accepted. It can be concluded that there is Influence. Using  Learning  Model of Student Group Writing  Skills Travel Report of students of class V SDN 01 Nagari Bukik Sikumpa Subdistrict, Kabupaten Lima Puluh Kota.KeyWords: model pembelajaran round club, menulis laporan perjalanan.


2021 ◽  
pp. 1-8
Author(s):  
Junta Iguchi ◽  
Minoru Matsunami ◽  
Tatsuya Hojo ◽  
Yoshihiko Fujisawa ◽  
Kenji Kuzuhara ◽  
...  

BACKGROUND: Few studies have investigated the variations in body composition and performance in Japanese collegiate American-football players. OBJECTIVE: To clarify what characterizes competitors at the highest levels – in the top division or on the starting lineup – we compared players’ body compositions and performance test results. METHODS: This study included 172 players. Each player’s body composition and performance (one-repetition maximum bench press, one-repetition maximum back squat, and vertical jump height) were measured; power was estimated from vertical jump height and body weight. Players were compared according to status (starter vs. non-starter), position (skill vs. linemen), and division (1 vs. 2). Regression analysis was performed to determine characteristics for being a starter. RESULTS: Players in higher divisions and who were starters were stronger and had more power, greater body size, and better performance test results. Players in skill positions were relatively stronger than those in linemen positions. Vertical jump height was a significant predictor of being a starter in Division 1. CONCLUSION: Power and vertical jump may be a deciding factor for playing as a starter or in a higher division.


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