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1. A concentrating solar thermal power plant produces electrical power of 250 MWe. Its thermal power...
A concentrating solar power (CSP) plant has a capacity to produce 250 MW of thermal power...
A concentrating solar power (CSP) plant has a capacity to produce 250 MW of thermal power (i.e. heat) at noon. The heat temperature is 400ºC, and the air temperature is 20ºC. The exergy/2nd law efficiency for this type of technology is around 50%, if the system is well-designed. What is the rated electrical capacity of this CSP plant, in MW? (1pt) What is the energy/1st law efficiency? (1pt)
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is depicted in Figure 1. It features a Rankine-cycle based solar thermal power plant using tower technology. Technical data and assumptions: • = net electrical power output (turbine - pump) = 12 MW • Working fluid: water. • Condenser: outlet temperature = 320 K, outlet steam quality = 0%; no pressure drop through condenser. • Pump: adiabatic, outlet pressure = 170 bar; outlet temperature =...
Question 1 The following diagram shows a solar thermal power system. The average daily overall plant (solar- to-elec...
Question 1 The following diagram shows a solar thermal power system. The average daily overall plant (solar- to-electric) efficiency is 20 %. Solar trough collectors have an approximate efficiency of 60 % . Efficiency of the steam-turbine is about 50 % . The energy conversion efficiency of the generator is 98%. (a) Calculate other losses that are unaccounted for in the system. (b) List the other losses occurring in the system. Solar Field Soler Superheater Steam Turbine Hot Salt Tank...
Question 2 [Total Marks 25 High Temperature Solar Thermal Systems a) Describe the principle of operation of a central r...
Question 2 [Total Marks 25 High Temperature Solar Thermal Systems a) Describe the principle of operation of a central receiver concentrating solar thermal system Include a discussion of the method of collecting sunlight, working fluid, generating electricity and storage. Include appropriate diagram(s) in your description 10 Marks Describe the key differences between solar trough and parabolic dish solar thermal b) collectors. Why is the receiver for a parabolic dish located a long way above the rim of the collector, while...
power plant 3- A combined power plant consisting of a simple open cycle gas turbine unit,...
power plant
3- A combined power plant consisting of a simple open cycle gas turbine unit, using air as the working fluid (neglect fuel mass flow rate), and a steam turbine is to be designed such that the heat rejected at the gas turbine unit is to be utilized to produce steam at the generator for the steam turbine. The exhaust air leaving the generator is at (200 C°). Draw a simple sketch for the plant and the (T-s) diagram...
A group is considering installing a solar power station and has asked you for your recommendation...
A group is considering installing a solar power station and has asked you for your recommendation for a photovoltaic system or a solar thermal system. At this stage you are asked not to include cost factors. The single point design condition they have given you is for an incident solar radiation on the collector of 550 W/m2, a surrounding temperature of 18 C. The dead state for this problem should be taken as To = 291 K, Po = 1...
Thermodynamics 1 A thermal power plant based on an ideal reheat cycle uses steam as the...
Thermodynamics
1 A thermal power plant based on an ideal reheat cycle uses steam as the operating fluid and is operated between 800 psi and 2 psi. The pressure and temperature at the turbine inlet are 800 psi and 750° F. The steam is expanded in the turbine to 80 psi and then reheated to 700° F. The steam is then expanded to 2 psi. (a) Show the schematic identifying the major components in the power plant, i.e. boiler, turbine,...
20.54---- A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal...
20.54---- A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency of 38%. a) What is the rate of heat input to the plant? b) The plant burns anthracite coal, which has a heat of combustion of 2.65×107J/kg. How much coal does the plant use per day, if it operates continuously? c) At what rate is heat ejected into the cool reservoir, which is the nearby river? d) The river's temperature is 18.0 ∘C...
A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency...
A typical coal-fired power plant generates 1000 MW of usable power at an overall thermal efficiency of 37%. Part A What is the rate of heat input to the plant? Part B The plant burns anthracite coal, which has a heat of combustion of 2.65×107J/kg. How much coal does the plant use per day, if it operates continuously? Part C At what rate is heat ejected into the cool reservoir, which is the nearby river? Part D The river's temperature is...
Problem 24.1: please help!! Solar Thermal Energy 462 onsider a solur thermal elecinic plant built using a system of 2D...
Problem 24.1: please help!!
Solar Thermal Energy 462 onsider a solur thermal elecinic plant built using a system of 2D concentrators that reflect sunight to a system of pipes carrying molten salt with concentration C # 200. Example 24.5 2D Concentrator Efficiency Optimization Wher is the optimal efficiency poxsibie (essaming an onbient temperoture of 300 K and incident sunight u 1000 W/r)? Solving eq (24.23) un encany gives 818 K At this temperature. Cartot efficiency is approximately 63% and about...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is depicted in Figure 1. It features a Rankine-cycle based solar thermal power plant using tower technology. Technical data and assumptions: • = net electrical power output (turbine - pump) = 12 MW • Working fluid: water. • Condenser: outlet temperature = 320 K, outlet steam quality = 0%; no pressure drop through condenser. • Pump: adiabatic, outlet pressure = 170 bar; outlet temperature =...
Question 1 The following diagram shows a solar thermal power system. The average daily overall plant (solar- to-electric) efficiency is 20 %. Solar trough collectors have an approximate efficiency of 60 % . Efficiency of the steam-turbine is about 50 % . The energy conversion efficiency of the generator is 98%. (a) Calculate other losses that are unaccounted for in the system. (b) List the other losses occurring in the system. Solar Field Soler Superheater Steam Turbine Hot Salt Tank...
Question 2 [Total Marks 25 High Temperature Solar Thermal Systems a) Describe the principle of operation of a central receiver concentrating solar thermal system Include a discussion of the method of collecting sunlight, working fluid, generating electricity and storage. Include appropriate diagram(s) in your description 10 Marks Describe the key differences between solar trough and parabolic dish solar thermal b) collectors. Why is the receiver for a parabolic dish located a long way above the rim of the collector, while...
power plant
3- A combined power plant consisting of a simple open cycle gas turbine unit, using air as the working fluid (neglect fuel mass flow rate), and a steam turbine is to be designed such that the heat rejected at the gas turbine unit is to be utilized to produce steam at the generator for the steam turbine. The exhaust air leaving the generator is at (200 C°). Draw a simple sketch for the plant and the (T-s) diagram...
Thermodynamics
1 A thermal power plant based on an ideal reheat cycle uses steam as the operating fluid and is operated between 800 psi and 2 psi. The pressure and temperature at the turbine inlet are 800 psi and 750° F. The steam is expanded in the turbine to 80 psi and then reheated to 700° F. The steam is then expanded to 2 psi. (a) Show the schematic identifying the major components in the power plant, i.e. boiler, turbine,...
Problem 24.1: please help!!
Solar Thermal Energy 462 onsider a solur thermal elecinic plant built using a system of 2D concentrators that reflect sunight to a system of pipes carrying molten salt with concentration C # 200. Example 24.5 2D Concentrator Efficiency Optimization Wher is the optimal efficiency poxsibie (essaming an onbient temperoture of 300 K and incident sunight u 1000 W/r)? Solving eq (24.23) un encany gives 818 K At this temperature. Cartot efficiency is approximately 63% and about...
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