scholarly journals Modifikasi Mesin Pengupas Kulit Pinang Kering

2021 ◽  
Vol 14 (2) ◽  
pp. 59-63
Author(s):  
Fathir Alqodri ◽  
Ruzita Sumiati ◽  
Rakiman Rakiman ◽  
Yuli Yetri ◽  
Desmarita Leni
Keyword(s):  
Areca Nut ◽  
Large Capacity ◽  
Design Specifications ◽  
Engine Design ◽  
Increase Productivity

Due to the weaknesses of some existing areca peelers, some modifications were made. Modifications were made to the gear stripper, the addition of the inlet funnel, the gear stripper cover, and the exit funnel. The purpose of this modification of the design of the areca nut peeling machine is to make it easier for areca-producing farmers to peel their skin. Engine design specifications, using a 1/2 HP motor with a speed of 1500 rpm, 2-inch, and 10-inch pulleys, and a capacity of 5.16 kg/hour. The result of this modification is stated to be able to perform stripping with a large capacity. This machine is expected to be able to meet the needs of manual areca nut peelers to increase productivity.

Designing for Maintainability in Preliminary Aircraft Engine Design

1997 ◽  
Author(s):  
Carrie R. Nottingham ◽  
Roberto A. Ortega ◽  
Bharadwaj Rangarajan ◽  
Patrick N. Koch ◽  
Farrokh Mistree
Keyword(s):  
High Speed ◽  
High Performance ◽  
Aircraft Engine ◽  
Turbine Engines ◽  
Exploration Process ◽  
Transport Aircraft ◽  
Design Specifications ◽  
Conceptual Design Phase ◽  
Engine Design ◽  
Concept Exploration

Abstract With the high performance demands of turbine engines, particularly during aircraft take-off and landing, the necessity of scheduled and unscheduled maintenance makes designing these engines for maintainability extremely important. Maintenance issues, however, are normally not addressed in the preliminary stages of design. Thus, we are interested in determining top level engine design specifications which include maintainability issues. For this study we use the High Speed Civil Transport aircraft engine cycle as our example. We identify critical maintenance actions and levels for the HSCT and map these maintenance issues into the conceptual design phase. To facilitate a thorough concept exploration process for top level design specifications including maintainability issues, we implement the Robust Concept Exploration Method (RCEM). Our focus in this paper is to demonstrate a method of abstracting maintainability issues to the preliminary stages of design, rather than the results per se.

Rotorcraft Engine Cycle Optimization at Mission Level

2013 ◽  
Author(s):  
Ioannis Goulos ◽  
Fabian Hempert ◽  
Vishal Sethi ◽  
Vassilios Pachidis ◽  
Roberto d’Ippolito ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Design Criterion ◽  
Optimization Strategy ◽  
Computationally Efficient ◽  
Design Point ◽  
Integrated Simulation ◽  
Design Specifications ◽  
Engine Design ◽  
Shaft Power

This work investigates the potential to reduce fuel consumption associated with civil rotorcraft operations at mission level, through optimization of the engine design point cycle parameters. An integrated simulation framework, comprising models applicable to rotorcraft flight dynamics, rotor blade aeroelasticity and gas turbine performance, has been deployed. A comprehensive and computationally efficient optimization strategy, utilizing a novel particle-swarm method, has been structured. The developed methodology has been applied on a twin-engine light and a twin-engine medium rotorcraft configuration. The potential reduction in fuel consumption has been evaluated in the context of designated missions, representative of modern rotorcraft operations. Optimal engine design point cycle parameters, in terms of total mission fuel consumption, have been obtained. Pareto front models have been structured, describing the optimum inter-relationship between maximum shaft power and mission fuel consumption. The acquired results suggest that, with respect to technological limitations, mission fuel economy can be improved with the deployment of design specifications leading to increased thermal efficiency, whilst simultaneously catering for sufficient performance to satisfy airworthiness certification requirements. The developed methodology enables the identification of optimum engine design specifications using a single design criterion; the respective trade-off between fuel economy and payload–range capacity, through maximum contingency shaft power, that the designer is prepared to accept.

Rotorcraft Engine Cycle Optimization at Mission Level

2013 ◽  
Vol 135 (9) ◽  
Author(s):  
Ioannis Goulos ◽  
Fabian Hempert ◽  
Vishal Sethi ◽  
Vassilios Pachidis ◽  
Roberto d'Ippolito ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Design Criterion ◽  
Optimization Strategy ◽  
Computationally Efficient ◽  
Design Point ◽  
Integrated Simulation ◽  
Design Specifications ◽  
Engine Design ◽  
Shaft Power

This work investigates the potential to reduce fuel consumption associated with civil rotorcraft operations at mission level, through optimization of the engine design point cycle parameters. An integrated simulation framework, comprising models applicable to rotorcraft flight dynamics, rotor blade aeroelasticity, and gas turbine performance, has been deployed. A comprehensive and computationally efficient optimization strategy, utilizing a novel particle-swarm method, has been structured. The developed methodology has been applied on a twin-engine light and a twin-engine medium rotorcraft configuration. The potential reduction in fuel consumption has been evaluated in the context of designated missions, representative of modern rotorcraft operations. Optimal engine design point cycle parameters, in terms of total mission fuel consumption, have been obtained. Pareto front models have been structured, describing the optimum interrelationship between maximum shaft power and mission fuel consumption. The acquired results suggest that, with respect to technological limitations, mission fuel economy can be improved with the deployment of design specifications leading to increased thermal efficiency, while simultaneously catering for sufficient performance to satisfy airworthiness certification requirements. The developed methodology enables the identification of optimum engine design specifications using a single design criterion; the respective trade-off between fuel economy and payload–range capacity, through maximum contingency shaft power, that the designer is prepared to accept.

Study on Large Capacity 4-Pole Synchronous Generator Excitation System

2016 ◽  
Vol 136 (1) ◽  
pp. 18-24
Author(s):  
Daisuke Hiramatsu ◽  
Yoichi Uemura ◽  
Dai Nozaki ◽  
Shinji Mukoyama ◽  
Kazuma Tsujikawa ◽  
...  
Keyword(s):  
Synchronous Generator ◽  
Excitation System ◽  
Large Capacity ◽  
Synchronous Generator Excitation

The New Insulating Technology for Oil-Immersed Large Capacity Transformers

1992 ◽  
Vol 112 (4) ◽  
pp. 289-293 ◽  
Author(s):  
Yuzuru Kamata ◽  
Masaaki Maejima
Keyword(s):  
Large Capacity

Study of effective factors in the design of zero energy buildings in arid climate (case of Isfahan City)

2018 ◽  
Vol 8 (1) ◽  
pp. 211-221
Author(s):  
Negar Aminoroayaei ◽  
Bahram Shahedi
Keyword(s):  
Fossil Fuels ◽  
Arid Climate ◽  
Zero Energy ◽  
Factors Affecting ◽  
Zero Energy Building ◽  
Cost Of Energy ◽  
Current Century ◽  
Increase Productivity ◽  
Save Energy ◽  
Zero Energy Buildings

In the current century, a suitable strategy is concerned for optimal consumption of energy, due to limited natural resources and fossil fuels for moving towards sustainable development and environmental protection. Given the rising cost of energy, environmental pollution and the end of fossil fuels, zero-energy buildings became a popular option in today's world. The purpose of this study is to investigate the factors affecting the design of zero-energy buildings, in order to reduce energy consumption and increase productivity, including plan form, climatic characteristics, materials, coverage etc. The present study collects the features of zero-energy building in Isfahan, which is based on the Emberger Climate View in the arid climate, by examining the books and related writings, field observations and using a descriptive method, in the form of qualitative studies. The results of the research showed that some actions are needed to save energy and, in general, less consumption of renewable energy by considering the climate and the use of natural conditions.

Sign in / Sign up

Export Citation Format

Share Document