The purpose of a cost-out project is to reduce cost of blades by improving current blade design from a structural perspective.
The cost reduction is done by modifying blade lay-up and introducing Bladenas technologies. In order to do a valid cost estimation, several factors needs to be considered. These factors include from design to end-of-life of the turbine.
Below is given a list of cost elements considered in a cost-out project:
• Cost-out of blades manufactured in existing moulds
• Reduction in working processes in the mould and prefabrication
• Addition of new technology for weight reduction
• Further reduced weight by optimised design, more slim panels
• Blade obtains same stiffness and frequencies, no changes needed in control system etc.
• Improve quality of blade with reduced resources
Below is given a list of cost elements considered in a cost-out project:
• Cost-out of blades manufactured in existing moulds
• Reduction in working processes in the mould and prefabrication
• Addition of new technology for weight reduction
• Further reduced weight by optimised design, more slim panels
• Blade obtains same stiffness and frequencies, no changes needed in control system etc.
• Improve quality of blade with reduced resources
Commercial benefits using Bladena technologies
Using Bladena Technologies stronger blades are achieved. Following financial benefits:
Cost-out in manufacturing
|
Others
|
No. |
|
D-String® |
D-Stiffener™ |
X-Stiffener™ |
Cap Stiffener™ |
Floor™ |
1 |
Reduce bill of material for blades. |
x |
x |
x |
x |
|
2 |
Reduced mould time. |
x |
x |
x |
x |
|
3 |
More accurate weight, since lower tolerances in use of resin. |
x |
x |
x |
||
4 |
Reduce manufacturing time (over-lamination in confined spaces and at trailing edge) |
x |
x |
x |
x |
x |
5 |
Reduce risk for production flaws (Cap Stiffener™) |
x |
x |
x |
x |
x |
6 |
Less need for Non-Destructive Testing (NDT) |
x |
x |
x |
x |
|
7 |
Increase manufacturing tolerances hence flaws does not affect the blade properties -> brings the manufacturing cost down. |
x |
x |
x |
x |
x |
8 |
Reduced weight which reduces the root bending moment. |
x |
x |
x |
||
9 |
Increase the AEP |
(x) |
(x) |
x |
(x) |
x |
10 |
Reduced maintenance cost and risk |
x |
x |
x |
x |
x |
11 |
Reduced risk during testing and operation |
x |
x |
x |
x |
x |