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2.14. Problems 1. What is the efficiency of a solar PV module that has a surface...
(a) If the cost of electricity consumption in Oman is OR 0.030/unit (where, 1 unit =...
(a) If the cost of electricity consumption in Oman is OR 0.030/unit (where, 1 unit = 1 KWH), Calculate the monthly electricity bill for a load usage of 10 lamps (15 watts each), 10 fans (1000 watts each) and 1 TV (2000 watts) for 18 hrs. a day. [3 marks] (b) Calculate the efficiency of a solar PV module whose length is 259 cm and width is 110 cm and produces a 2560 W maximum power when exposed to 920...
After completing module assembly, the performance was tested using a Solar Simulator, which produces a perfect...
After completing module assembly, the performance was tested using a Solar Simulator, which produces a perfect simulated solar radiation spectrum at 1000 W/m2. The test revealed the output power of 184 W while the nominal listed power was expected to be 230 W. The Electroluminescence test did not reveal any problems with encapsulation or the cells. Describe all possible causes for such losses and make predictions for a long-term fate of this module. Describe in one sentence the I-V curve...
Need helps on parts B, C, E,and F Costs of installing rooftop solar PV : Calculate...
Need helps on parts B, C, E,and F Costs of installing rooftop solar PV : Calculate out-of-pocket costs and payback time for a rooftop solar installation. Assume that this PV system measures 6 m x 5 m and that the panels are 20% efficient. (a) Peak power rating: The solar industry describes the “peak wattage” of a PV system as its power output at a hypothetical, industry-standard irradiance of 1000 W/m2. What would be the peak wattage (in W) of...
(3) Solar power for a house 03 W/m2. Sunlight arriving at the surface of the earth has an intensity of about l The roof of a house is 30 ft by 60 ft in size. what is the maximum power arriving at...
(3) Solar power for a house 03 W/m2. Sunlight arriving at the surface of the earth has an intensity of about l The roof of a house is 30 ft by 60 ft in size. what is the maximum power arriving at the roof? (Hint: This will be at noon with the sun directly overhead.) Estimate the average power during daytime on a clear day having 12 hours of daylight (sunrise to sunset) Estimate the average power over a complete...
You are planning to make a module with the solar cell properties of which are given...
You are planning to make a module with the solar cell properties of which are given bellow. Now answer the following questions: a. What is the field factor of this solar cell? b. What is the maximum power that can be extracted from this solar cell? c. What is the efficiency of the solar cell? d. How many solar cell you need to have approximate voltage and current of 40 V and 20 A respectively (Vmp and Imp of the...
1. Consider an opaque, horizontal square plate (Im by 1m) with an electrical heater on its backside. The front side is exposed to ambient quiescent air that is at 20° C, solar irradiation (from...
1. Consider an opaque, horizontal square plate (Im by 1m) with an electrical heater on its backside. The front side is exposed to ambient quiescent air that is at 20° C, solar irradiation (from sun at 5800° K) of 600 W/m2, and an effective sky temperature of -40° C. The plate surface temperature is kept at Ts 60 C (at steady state condition). Calculate natural convection heat transfer coefficient from the plate. (10 points) What is the electrical power (W/m2)...
No graph provided. Example 4 A solar cell with a surface area of 4.8 cm2 under...
No graph provided.
Example 4 A solar cell with a surface area of 4.8 cm2 under irradiation of 1000 W/m2 has a reverse saturation (dark) current lo of 5.5 x 10-15 mA, the short circuit current of Isc =120 MA. At the cell temperature of 25 C° = 298 K, the P-N junction thermal voltage Vth =KT/q is 0.026 V. Determine: (i) The open circuit voltage Voc, (ii) The maximum voltage and current (Vm and Im) at the MPP (max...
At a certain location, the solar power per unit area reaching the Earth's surface is 210...
At a certain location, the solar power per unit area reaching the Earth's surface is 210 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your solar panels have a typical coversion efficiency of 13 %. (In other words, what power must your solar panels receive?) Answer in both kiloWatts and Watts. Psolar = Psolar = Based...
Professor has 14 photovoltaic panels on his roof, and the effective PV area OF EACH PANEL...
Professor has 14 photovoltaic panels on his roof, and the effective PV area OF EACH PANEL is 3ft x 5ft. At 12:20PM on October 12th, these panels were generating 2 kw of power. At that same time, the solar radiation measured by the weather station showed that the incoming solar radiation was 415 watts/m2 . 1. Determine the instantaneous efficiency of the system at this point. Note that you need to convert from square feet to square meters, and from...
Question 2 Portugal has a typical insolation of 1000 W/m2. A solar PV plant located there has an ...
Question 2 Portugal has a typical insolation of 1000 W/m2. A solar PV plant located there has an output of 11 MWp. Since the collectors track the sun, the power output is steady at 11 MW from 09:00 to 16:00 Hrs and almost zero outside this time. The lifetime of the system is 20 years with an annual operating cost and total capital investment of €1 million and €75 million, respectively. The cost of capital is 7% p.a. The efficiency...
(a) If the cost of electricity consumption in Oman is OR 0.030/unit (where, 1 unit = 1 KWH), Calculate the monthly electricity bill for a load usage of 10 lamps (15 watts each), 10 fans (1000 watts each) and 1 TV (2000 watts) for 18 hrs. a day. [3 marks] (b) Calculate the efficiency of a solar PV module whose length is 259 cm and width is 110 cm and produces a 2560 W maximum power when exposed to 920...
(3) Solar power for a house 03 W/m2. Sunlight arriving at the surface of the earth has an intensity of about l The roof of a house is 30 ft by 60 ft in size. what is the maximum power arriving at the roof? (Hint: This will be at noon with the sun directly overhead.) Estimate the average power during daytime on a clear day having 12 hours of daylight (sunrise to sunset) Estimate the average power over a complete...
1. Consider an opaque, horizontal square plate (Im by 1m) with an electrical heater on its backside. The front side is exposed to ambient quiescent air that is at 20° C, solar irradiation (from sun at 5800° K) of 600 W/m2, and an effective sky temperature of -40° C. The plate surface temperature is kept at Ts 60 C (at steady state condition). Calculate natural convection heat transfer coefficient from the plate. (10 points) What is the electrical power (W/m2)...
No graph provided.
Example 4 A solar cell with a surface area of 4.8 cm2 under irradiation of 1000 W/m2 has a reverse saturation (dark) current lo of 5.5 x 10-15 mA, the short circuit current of Isc =120 MA. At the cell temperature of 25 C° = 298 K, the P-N junction thermal voltage Vth =KT/q is 0.026 V. Determine: (i) The open circuit voltage Voc, (ii) The maximum voltage and current (Vm and Im) at the MPP (max...
Question 2 Portugal has a typical insolation of 1000 W/m2. A solar PV plant located there has an output of 11 MWp. Since the collectors track the sun, the power output is steady at 11 MW from 09:00 to 16:00 Hrs and almost zero outside this time. The lifetime of the system is 20 years with an annual operating cost and total capital investment of €1 million and €75 million, respectively. The cost of capital is 7% p.a. The efficiency...
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