Wind Energy - Siemens wants to Produce New Wind Turbines - Essay Writing Assignment Help

Assignment Task:

Section A 

Problem 1

Siemens wants to produce new wind turbines specially designed for cold climates. Their initial design is for a turbine that produces 100kW in a 12 m/s wind at a cold site (-20°C) with an air density of 1.41 kg/m3. They have decided on a 20 metre in diameter, three-bladed wind turbine. The rotor is to have its peak power coefficient at a tip speed ratio of 7 in a 12 m/s wind.

The airfoil to be used has a lift coefficient of 1.0 and a minimum drag to lift ratio at an angle of attack of 7 degrees.

1. Due to your success in the J1 module, Siemens has hired you as a new blade designer. You must come up with the blade shape as a starting point for the blade design. The design is to be based on the optimum rotor shape assuming that there is wake rotation (but no drag or tip losses). Find the chord length, pitch, and twist at nine stations of the blade (each 1m long), assuming that the hub occupies the inner tenth of the rotor.

2. Determine the rotor CP assuming Cd = 0. Again determine the power coefficient assuming that the drag coefficient is 0.02, and that the aerodynamics are the same as the condition without any drag. How much power is lost due to drag? Which part of the blade produces the most power?

3. Does it look like the chosen design is adequate to provide the power that Siemens wants?

Problem 2

Calculate the flapwise bending moment and the shear at the root of the blade in a wind turbine with a three bladed rotor and rated speed of 12 rpm. The tip speed ratio is 5 and the free stream wind velocity is 12 m/s. Assume the rotor to be ideal and the density of air as 1.225 kg/m3.

Problem 3

A 40 m diameter, three bladed wind turbine produces 700 kW at a wind speed (hub height) of 14 m/s. The air density is 1.225 kg/m3.

Determine:

1. The rotational speed (rpm) of the rotor at a tip-speed ratio of 5.0.

2. What is the tip-speed (m/s)?

Problem 4

A 30 m diameter wind turbine is placed on a 50 m tower in terrain with a power law coefficient (????) of 0.2. Find the ratio of available power in the wind at the highest point the rotor reaches to its lowest point.

Section B

“Wind energy can play a role in achieving the UN’s sustainable development goals.”

Write an essay discussing this statement with a detailed reference to at least four of the goals. Illustrate your essay with appropriate diagrams and include appropriate examples to support your arguments. In reference appropriately, this essay will be checked for plagiarism through Blackboard.

This essay should be approximately 2000 words long.

This Essay Writing Assignment has been solved by our Essay Experts at My Uni Paper. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing style.

Be it a used or new solution, the quality of the work submitted by our assignment experts remains unhampered. You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turnitin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.