Originally from Bozeman, Mont., where he still keeps a home — he built it while working for the architect Jonathan Foote, and bought it years later — these days Halvorson has his hand in more creative endeavors than most people tackle in a lifetime: designing clothes, cobbling shoes and binding books, to name a few.
Lifetime designs, markets and distributes cutlery, kitchenware, bakeware and other household products.
This work proposes a lifetime design strategy for binary geothermal plants which takes into account heat resource degradation.
The performances of the four plants designed for the different resource conditions are then simulated over the plant life to obtain the best lifetime design.
Finally a discussion on the analysis methodology; the formulation of lifetime design loads; and the structural loads developed due to the simplified design pressure model is presented.
The production history of a real geothermal well in the Taupo Volcanic Zone, New Zealand, is used as a case study for the lifetime design strategy.
The cumulative reliability and risk assessment are then calculated using the fast probability integration (FPI) technique to construct a novel probabilistic Goodman diagram which provides lifetime design guide lines for blades and an optimal maintenance strategy in management, in decision-making relating to the PM/inspection scheduling, replacement, and spare parts requirements.
The main goal of achieving the highest realistic power level limited by natural circulation and transportability, while providing energy security and proliferation resistance thanks to a long core lifetime design has been satisfactorily attained.
The economic impacts related to the choice of the various materials considered are evaluated against the plant lifetime design and guidelines for future optimisation in the technical specifications are given.
Heuristic deterministic models are often proposed to reproduce S−N and ε−N fields as well as crack growth curves aiming at providing basic material characterization to be used in lifetime design.
