This is not a graded problem The Solar Heat Worldwide report states "At the end of 2022 in the 72 recorded countries, theannual collector yield of all water-based solar thermal systems for the simulated applications[...] is 443 TWh (=1,594 PJ). This corresponds to a final energy savings equivalent to 47.6 milliontons of oil and 150.7 million tons of CO₂."Provide a mathematical algorithm to convert TWh to energy savings and reduction in CO2.Comment on the assumptions that must be made. Provide your own estimate and comment onthe result in comparison to the report.

To solve the given problem of converting TWh to energy savings in terms of oil and CO₂ emissions, we…

Answered: The Solar Heat Worldwide report states…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Please use power series solution. Also the temperature should decrease
Conduction Heat Transfer X material (a) material (b) . both (a) and (b) have the same thermal conductivity the temperature distribution is independent of thermal conductivity it's not that simple 9. Fin efficiency is defined as: • tanh (mL) (hP/k Ac)1/2 (heat transfer with fin) / (heat transfer without fin) (actual heat transfer through fin) / (heat transfer assuming all fin is at T = Tb) (Tx=L-Tf)/(Tb-Tf) 10. For an infinite fin, the temperature distribution is given by: (T-Tf)/(Tb-Tf)= e-mx. The heat flow through the fin is therefore given by: k (Tb-Tf)/L ● zero, because the fin is infinite ● infinite because the fin is infinite ● (Tb-Tf) (hP/k Ac)1/2 ● (Tb – Tf) (h P / k Ac)1/2 tanh (mL) 11. The Biot number, Bi, is defined as: • Bi=hk/L • Bi=hL/k • Bi= k/LH • Bi=qL/k • Bi=p UL/k 12. For a plate of length L, thickness, t, and width, W, subjected to convection on the two faces of area L x W. What is the correct length scale for use in the Biot number? . L ● W ● t • t/2 • L/2 13. If Bi…
A system consisting of a power cycle and a heat pump cycle, each operating between hot and cold reservoirs whose temperature are 500 K and 300 K, respectively. All energy transfers are positive in the directions of the arrows. The accompanying table provides two sets of steady-state data, in kW. For each set of data, determine if the system is operating in accord with the first and second laws of thermodynamics. Power cycle QHQc W cycle (a) 60 40 20 (b) 120 80 40 Heat pump cycle QHQ'cW'cycle 60 20 80 20 80 100 Power cycle- Hot reservoir, TH= 500 K O'H J Qc o'c Cold reservoir, Te= 300 K W cycle Heat pump
A truncated cone 30 cm high is constructed of aluminum. The diameter at the top is 7.5 cm, and the diameter at the bottom is 12.5 cm. the lower surface is maintained at 93 o C; the upper surface, at 540 o C. The other surface is insulated. Assuming one dimensional heat flow, what is the rate of heat transfer in watts?
A steady-state electric motor operates under 10 Ampere and 220 Volt operating conditions. The output shaft rotates with 100 rpm (rpm) and 16 Nm torque. The heat transfer from the electric motor to the environment is related to the equation of surface temperature Tb, ambient temperature T0 and hA(Tb-T0). The energy transfer is shown on the figure with the help of arrows. (h=100 W/(m2K)), A= 0.195 m2, T0= 293 K) a) Determine the temperature Tb in K (Kelvin). b) Assuming the electric motor as the system, determine the entropy production in kW/K. c) Assume the area of the system boundary as the ambient temperature (T0) and determine the entropy generation in kW/K for the extended system boundaries.
Heat at a rate of 5 kW is being uniformly produced in a solid cylinder. The cylinder has a diameter and a length of 2 cm and 4 m, respectively. Find a) the volumetric and the linear heat generation rates for this cylinder and b) heat flux at r = D/2. [Ans.: ģ = 0.25 kW/m, ġ" = 19.9 kW/m², and ġ" = 3979 kW/m³].
Your house has an electric water heater. Several friends are visiting you over the weekend and they are taking consecutive showers. Assume that at the maximum heating level, the heater uses 50 kW of electricity. The water use rate is a continuous 4 gallons per minute with the new water saving showerhead you recently installed. Your very old showerhead had used 7 gallons per minute. You replaced the showerhead because you learned that heating water was the second highest energy use in your home. By slowing the flow of water through the heater, the water temperature should increase to a higher temperature. (a) What is the change in temperature (T) for the old showerhead? (b) What is the change in temperature (T) for the new showerhead? Assume the system is at steady sate, and all of the 50 kW energy used is heating the water.
1. Steady state heat flow means, (a)Negligible flow of heat, (c)Heat flow independent of time (d)Uniform rate in temperature rise of a body 2. The ratio of heat flow QI/Q2 from two walls of same thickness having their thermal resistances as Rth1=8 Rth2 (b)No difference of temperature between the bodies will be: b) 0.25 3. The critical thickness of insulation for hot pipe is equal to: b) unity a) 0.125 c) 2 d) 4 a) h/k 4. Which of the following expresses thermal diffusivity of a substance in terms of thermal conductivity(k), density (p) and specific heat (C) a) (p2 k C) c) zero d) k/h d)(p C/k2) b) (1/ p k C) 5. The boundary condition of the end insulated fin are: c)(k/ p C) dT a) - kA() = 0 and T-To at x-0 b) - kA().- = 0 and T-Too at x=L dx d) None of them c) T=0 at x=0 and q=0 at x=L 6. The equation for the temperature profile inside a solid cylinder with heat source is: T-T a) T=T, + x b) =1-( !! 2k T,-T (R²-r) T-T = 2k c) d) None of them 7. Plane wall with heat generation, at x-0…
differansıel equatıon ca
A 3.0-inch wall of fire brick, k = 8.0 Btu/ (ft)(hr) (CF/ in) has one surface at 335°F, the other at 80°F. Find the heat conducted through an area of 1.4 ft? in one day.
The presence of thermal reservoir of a Geothermal Power Plant, supplements the generation of power and energy. What is then the thermal energy at the reservoir if the temperatures of the reservoir and a reference point are 315 C and 295 C respectively with volumetric specific heat and the value at the reservoir are 78 KJ/KG and 155 cu.meter. 241.800 KJ 352.500 K) 421.850 KJ 541, 820 KJ
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