Multispeed vs reduced voltage control starter Mohammad Amin Hilal 60061058 CM 2181-2 Miss. Smith March 10, 2014 Table content: 1.0 Introduction Centrifugal pump is a type of pump which increases the pressure of fluid and solid atom mixture over centrifugal force. This is the pump used for slurry pumping. In addition, the pump is also capable of converting electrical energy into slurry potential and kinetic energy. Furthermore, slurry pumps are generally used to carrying corrosive or abrasive high concentration slurry in many industries. The purpose of the report is to compare two different starters for slurry pumping, namely, multispeed and reduced voltage speed control starter, and recommend one based on cost maintenance and efficiency. 2.0 Background The engineering department at KSB Company has assigned me as project manager and has given me the task of researching how to increase the efficiency of slurry pumping in our company. The objective of this report is to examine and select the best starter for the slurry pump based on the performance and the ability of the starter to save energy during the operation. Hence, this report discusses two starters, multispeed control starter and reduced voltage control starter, and analyses the main features of the two. 3.0 Technology This part will illustrate the functionality of both reduced voltage speed and multispeed control starters. Also, this will verify the main features of both the technologies and how these features will be useful in this type of application. 3.1 Reduced Voltage Speed Control Starter in Slurry Pump Energy consumption is one of most serious problem of a slurry pump. Roughly, 20 percent of energy is wasted during the startup of slurry p... ... middle of paper ... ... 129(5), 5. Retrieved from http://search.proquest.com/docview/218845405?accountid=12833 3. http://www05.abb.com/global/scot/scot216.nsf/veritydisplay/2205e72865c2c747c1257a620026d001/$file/Mining%20brochure_EN_lowres.pdf 4. http://www.soft-starter.co/reduced_voltage_start_comparison.html "Reduced Voltage Start." Reduced Voltage Start. N.p., n.d. Web. 11 Mar. 2014 1. http://www1.eere.energy.gov/manufacturing/tech_assistance/pdfs/variable_speed_pumping.pdf 2. http://www.yaskawa.com/site/dmdrive.nsf/link2/SKUS-8GAL4E/$file/PR.AC.01.pdf Richardson, Scott. "Choosing Between Soft Starters and Drives." Choosing Between Soft Starters and Drives. N.p., n.d. Web. 26 Dec. 2010. 3. http://www.controldesign.com/assets/13WPpdf/eaton-soft-starter-vs-vfd.pdf 4. http://www.chempump.com/variable-speed-drives.html "Variable Speed Drives." Home. N.p., n.d. Web. 11 Feb. 2013.
water to mix with the fresh water to turn the waterwheel that provided power for
In industry, the performance specifications for a particular pump may be known, but the tests are usually based on water as the pumping medium. For liquids of significantly higher viscosity than water, these performance curves may only be accurate at certain flow rates, or they might not be valid at all, and it might be necessary to recalibrate the specifications for higher viscosity liquids.
“The wind turbine captures the wind’s kinetic energy in a rotor consisting of two or more blades mechanically coupled to an electrical generator” (Patel, M. R., 2006). According to wind turbines rotor layout they can be categorized into two main types Horizontal Axis Wind Turbine and Vertical Axis Turbine (Shuqin, L, 2014).
Power-control theory of crime combines Marxist conflict theory, social control theory and feminism and was theorized by Canadian criminologist, John Hagan. A prominent theme throughout the power-control theory is that social power in society is predominantly patriarchal, or male dominated.
In the field, most of the motors are induction motors. Now-a-days, industry has become more concerned about the performance of the motor. By improving the efficiency of motors we can save energy, reduce operating costs, and improve the End-User Profitability. In case of any failure, motors usually can be rewind, it is often worthy to replace a damaged motor with a new one to save energy and improve reliability.
There are hundreds of occupation around the world, few of which anyone would want to do. Being an electrician is one of them. Electrician keep lighting, electrical system around a building and generator working. Being an electrician can also be dangerous. You can die if you get Electrocuted by touching cables that have running current through them.
"Sustainable Energy for Your Home: Small Scale Hydro Systems." The Environment Centre: Promoting Sustainable Lifestyles in the South. Web. 04 Oct. 2011. .
Electrical engineering, I believe, is the only field where one’s work becomes the most instrumental part of one’s mundane activity and life, and the output produced stays forever to credit. My perception is that, this field requires a lot of patience, perseverance and management skills in order to be successful. The connection that electrical engineering offered between me and this world is the fact that you can become a person who can impact so many lives. This made me pursue Electrical Engineering. After four years of undergraduate studies in Electrical Engineering, I feel completely satisfied with my decision to choose this branch of engineering as my career option as it has revealed the most pragmatic and down-to-earth approach to tackling
Tidal Power My name is Yong Sha, and my term paper topic is tidal power. In my paper,I will write the definition of tidal power, the application of tidal power, the history of tidal power used in various countries, the advantages and disadvantages of tidal power and finally I want to introduce the prospect of tidal power. First, tidal power is the fluctuation phenomenon in the bay or tidal estuary, sea or river can be seen twice in a day, known as tide in the morning, and called Xi at night. Tides as a natural phenomenon, human navigation, fishing and salt production provided for convenience.
The cheapest way to generate electricity, today, is hydropower. The reason for that is, once a dam has been constructed and equipment installed, the source of the energy is free. It is a fuel source that is renewable because of things like snow and rainfall. Engineers may control the water flow on demand.
Most people thing that being an electrical engineer means that you spend your day going to people’s house and fixing their electrical problems. In reality there is more to this career than meets the eye. What they don’t know is that being an electrical engineering is a very advanced field that requires you to invent, design, and construct electrical and electronic devices as well as be able to adapt to different roles when the opportunity arises. For a career in this field you are required a minimum of a bachelors degree of science in engineering and a good computer skills.
There are many things that impact people during their lives. One of the many things that impact the lives of people today is the modern day electronics. People depended on electronics for their everyday use, although only 50 years ago, they were just dreams people were hoping for. There are many electronics in the modern day, but some are used way more than others. The cell phone, computer, and tablet are some of the ones often used by adults. The ones that teenagers use the most is the cell phone, laptop, and game boxes such as the xbox.
Electrical motors play an important role in today’s society, from powering domestic appliances like blenders to industrial equipment such as trains. It almost seems impossible to not use an electric motor in our daily lives. In the comfort of our home, electric motors will operate fans, refrigerators, and air conditioners to just name a few. Researchers are constantly looking for new ways to incorporate electrical motors in our lives.
Electrical engineering arose in the late 1800s and was heavily influenced by the work of many pioneers such as Nikola Tesla, Thomas Edison, and George Westinghouse. These inventors contributed greatly to the work in which electricity could be efficiently produced, distributed and used to improve society in a big way. Electrical engineering is a form of science that specializes in the study of electricity, electromagnetism, and electromechanical devices. Mathematics is the common language that is used to describe the theories and principles that are in this field, also electrical engineers need to be able to navigate their way through equations that describe the laws and concepts of electrical engineering in order to solve complex problems.
This report examines the Control Process applied by different companies, they use the control process to make sure that, the whole departments are working as better they can, the control process improve better benefits to the company, work place, employees, customer and directors. The control process is to maximizing productivity and minimizing costs to achieve their goals. The finding in this report is based on books and Internet sources. This report recommends that, the control process is the process to achieve the goals and also to planning the future.