Campus Sustainability ( university of arizona ) Research Paper

Campus Sustainability ( university of arizona ) - Research Paper Example The University of Arizona is renowned for its outstanding efforts in making the environment sustainable. The campus has put in place measures that aim at saving money, energy, and water among other resources (Craswell, 77). There are projects initiated by the campus for water conservation, recycling processes, the reuse of some commodities and application of alternative source of energy. The BioPark and the solar zone are projects that provide the energy required by the campus. They are substantial economic developments as they save on money spent to pay for electricity. The bridges are another example of the campus efforts to bring significance and efficiency for the entire Tucson community. Further, the projects intensify the student’s research, making them expound on many ideas. It creates job opportunities for other people within the community during the construction stage. The school garden workshop brings the student and the community together as they work on the farm. Improved farming techniques that reduce pollution are put into practice. This provides food for the campus ant the neighborhood at a lower cost, thus save their money for other purposes. The students use recycled water for c rop production hence minimize on wastage. In the campus, structures are designed in a way that conserves the environment, and this enables students to uphold sustainability. For instance, the residential halls and the recreation centre. The school’s compound is occupied by trees that provide shade for students and a source of shelter for birds. This highly creates a balanced ecosystem (Brooks, 67). The biofuel from algae project is a potential energy provider; however, it is due to completion. If realized, the project will offer an alternative source of energy for the transport industry. Algae have the ability to grow on non-crop zones, and thus land for crop production will not be affected. This method of energy reduces the

Power Factor Investigation Assignment Example | Topics and Well Written Essays - 1000 words

Power Factor Investigation - Assignment Example This makes it necessary to use suitable means to correct the power factor. This paper examines the use of the synchronous motor for power factor correction. There are several ways of defining power factor depending on the context of study. However, all the definitions come from the understanding that electrical power manifests in three ways. These are real power denoted as P (also known as true power or active power), reactive power denoted as Q, and apparent power denoted as |S| (Singh, 2008). Apparent power is the magnitude of complex power denote as â€Å"S† which is the vector sum of real power and reactive power (Singh, 2008). Each of the three manifestations of power has a different measure. The unit of measurement of real power is in watts (W) that of apparent power is Voltage-Amperes (VA), while that of apparent power is in Reactive-Volt-Amperes (VAR) (Meier, 2006). The ratio obtained by comparing real power to apparent power is the power factor. ... Therefore, the power factor is unity. However, there are cases when the voltage leads or lags the current. The cause for this is when the circuit has an inductive load such as a motor. The motor stores power in its coils, reducing the actual power (real power) available to drive it. The total power supplied to the motor in this case represents the apparent power, obtained by multiplying the voltage and the current (VA). If there is a difference between the supplied power (apparent power) and the power in use (real power), then the power factor reduces to a value less than unity. Depending on its severity, it may require correction (Singh, 2008). The theoretical framework governing the operation of motors includes Fleming’s right hand rule and faradays laws of electromagnetism. When the thumb, the index, and the middle finger are at right angles, Fleming’s right hand rule describes the direction of the thrust by the thumb; the index finger shows direction of the electrom agnetic field, while the middle finger shows the direction of the current. Faradays laws on the other hand state as follows, there is an EMF induced in a coil whenever the flux through the coil changes with time. The magnitude of induced EMF is directly proportional to the rate of change of flux and thirdly, the direction of the EMF is such as to oppose the change in flux. Electricity distribution companies provide power as apparent power but it bills customers based on the real power they consume. Therefore, a low power factor makes power more expensive to the consumer with increasing severity as power factor drops. This is why it is important to invest in equipment for power factor correction. Motors tend to be the largest loads in electric