Seminar- Paper 1 Proposal

The construction of PV solar cells uses a number of critical elements. One is indium an ingredient of the transparent conducting coating on the surface of the cell. The average material intensity for indium in solar cells is approximately 0.05 kg/kWnom. Calculate the quantity of indium that would be required for a project that would provide PV solar power with capacity factor of 0.25, sufficient to meet one third of the present needs of the US, population 301 million, each using an average of 10.2 kW. The current world production of Indium is 600 tones per year. If the solar project were to be implemented over a 5 year time span, is it true that the supply of indium be adequate?

. Provide supported and justified recommendations and original ideas for an effective environmental analysis of alternative approaches to the selection of renewable energy resources.

Discuss about intellectual property types and their importance. What are the consequences of poor work quality or omissions with life critical engineering systems? Discuss about contemporary issues containing an engineering component as part of its resolution. These contemporary issues relate to the consequences of poor work quality or omissions with life critical engineering systems.           Explain why the issues are critical.

F2 * Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. An article in the ASCE Journal of Energy Engineering ("Overview of Reservoir Release Improvements at 20 TVA Dams," Vol. 125, April 1999, pp. 1-17) presents data on dissolved oxygen concentration from streams below 20 dams in the Tennessee Valley Authority system. The sample mean from the observations is X 3.272 and the sample standard deviation is s = 2.130. Assume population is approximately normally distributed. Round your answers to 2 decimal places. = (a) Calculate the 95% two-sided confidence interval on the mean oxygen concentration. 2.29 i -1.2736 SUS 4.28 (b) Calculate the 95% two-sided prediction interval on the dissolved oxygen concentration for the next stream that will be tested. (i -3.6752 7.8456 (c) Find an interval that will contain 95% of the values of the dissolved oxygen concentration with 99% confidence. @ 3 # 80 F3 000 F4 $ 4 i 10.2472 75 %…

I want the solution very quickly within 15 minutes

An electric stove draws Ipms burners are turned on high. (Most household outlets are 25 A of current when all the || Vrms 120 V with a Irms 15 A circuit breaker; this will likely be set up on a Vrms circuit breaker.) Because of this large current, safety stan- - dards require using a relatively thick gauge of copper wire for the household wiring between the stove and the circuit breaker. This wire typically has radius r = sistivity p = 240 V circuit with a Ipms = 30 A 2.1 mm and re- – 1.68 x 10-8 N · m. If the voltage drop in the household wiring between the circuit breaker and the stove is 0.27 V, then what is the length of this wiring? Include two diagrams in your representation: (1) a circuit diagram show- ing the power source (take this to be the circuit breaker), the household wiring, and the stove, and (2) a cross-sectional di- agram of the household wiring.

The number of potential interfaces (points of contact) between various parts of a system.Give reasons and back them up with examples.

Education ide onoxide ght McGraw Rele Ar CH 0.2870 กาก CO. Tablo points) Consider a flat-plate solar collector placed horizontally on the flat roof of a house. The collector is 5 ft wide and 15 ft long, and the average temperature of the exposed surface of the collector is 100 °F. a) Determine the rate of heat loss from the collector by convection. Assume it is a calm day when the ambient air temperature is 70 °F and the convection heat transfer coefficient on the exposed surface is 2.5 Btu/h-ft2.°F. and b) Determine the rate of heat loss from the collector by radiation. Assume the effective sky temperature for radiation exchange is 50 °F and the emissivity of the exposed surface of the collector is 0.9. c) Given these two types of losses, determine how much energy is being collected when the incoming solar radiation is 23,885 Btu/hr. Toky 70°F = 50°F Solar collector

Electrical transmission towers are stationed at 350 m intervals and a conducting cable 2cm in diameter is strung between them. How many wires should each tower carry toensure structural integrity during a tropical storm? The towers are designed to withstandup to 180 kN of transverse force and during a cyclone, wind can blow up to 200 km/h.Assume there is no interference between the wires and take air density as 1.2 kg/m3and viscosity as 1.7×10-5 Nsm-2 . If the smooth insulation on the wires is mechanicallyroughened up before application what effect it will have on the design? Also, establishwhether the wires are likely to be subjected to self-induced vibrations and if so what the frequency would be. The frequency of such forced vibration, sometimes called self-induced vibration, may be calculated from an empirical formula due to Vincent Strouhal: fd⁄Uo = 0.198(1 − 19.7⁄Re) 250 < Re < 105

Consult the plot of efficiency of solar cells prepared by the National Renewable Energy Laboratory (NREL). As of 2010, the ______________ cell has the highest efficiency and _____________ cells have the lowest efficiency. (Fill in the blanks.)   Question 6 options:   two-junction concentrator; inorganic;   single-junction concentrator; amorphous Si:H   three-junction concentrator; organic   single crystal Si; dye-sensitized

3. A catheter-sensor system for invasive pressure measurements has a catheter with a length of 1 m and a diameter of 2.5 mm. The catheter is filled with water at 20 °C, with viscosity n = 0.001 Pa.s and density p = 10° kg/m². The diaphragm elasticity Ed equals 0.5x105 N/m³. a. Draw the simplified electrical model of the pressure measurement set-up that includes the catheter and the diaphragm and determine the transfer function of the pressure measurement system. b. Compute the natural frequency and damping ratio of this system. c. The current system has a damping ratio that is far from optimal. Suppose you are pinching the catheter for a small length Ix so that the catheter diameter reduces to 0.2mm. Assuming the pinch to affect the resistance only, determine the length Ix such that an optimal damping ratio 5 = 0.7 is obtained. d. Suppose that the assumption of purely resistive effects of the pinch cannot be made. Discuss (without calculations) the consequences on the derivation of Ix.…

Your answer is partially correct. Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. An article in the ASCE Journal of Energy Engineering ("Overview of Reservoir Release Improvements at 20 TVA Dams," Vol. 125, April 1999, pp. 1-17) presents data on dissolved oxygen concentration from streams below 20 dams in the Tennessee Valley Authority system. The sample mean from the observations is = 3.272 and the sample standard deviation is s 2.130. Assume population is approximately normally distributed. Round your answers to 2 decimal places. (a) Calculate the 95% two-sided confidence interval on the mean oxygen concentration. ΣμΣ 4.28 (Calculate the 95% two-sided prediction interval on the dissolved oxygen concentration for the next stream that will be tested. 2.29 ≤ xn+1 S .7.8456 (c) Find an interval that will contain 95% of the values of the dissolved oxygen concentration with 99% confidence. 2 -1.27 -3.68 eTextbook and…