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Full Product Pattern Recognition in β-Carotene Thermal Degradation through Ionization Enhancement

Sandia journal manuscript; Not yet accepted for publication

Xiao, Xiaoyin; Miller, Lance L.; Bernstein, Robert; Hochrein, James M.

The full product pattern including both volatile and nonvolatile compounds was presented for the first time for β-Carotene thermal degradation at variable temperatures up to 600°C. Solvent-enhanced ionization was used to confirm and distinguish between the dissociation mechanisms that lead to even and odd number mass products.

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TYPE Journal Article YEAR 2015
OSTI

Security-Constrained Unit Commitment with Linearized AC Optimal Power Flow

IEEE Transactions on Power Systems

Watson, Jean-Paul; Silva-Monroy, Cesar A.; Castillo, Anya; Laird, Carl; Neill, Richard'

We propose a mathematical programming-based approach to optimize the security-constrained unit commitment problem with a full AC transmission network representation. Our approach is based on our previously introduced successive linear programming (SLP) approach to solving the non-linear, nonconvex AC optimal power flow (ACOPF) problem. By linearizing the ACOPF, we are able to leverage powerful commercial mixed-integer solvers to iteratively optimize the combined unit commitment plus ACOPF model. We demonstrate our approach on six-bus, IEEE RTS-96, and IEEE 118-bus test systems. We perform a comparative analysis of the relative impacts of singlebus, DC, and AC transmission network models on the unit commitment and dispatch solutions and their associated costs.

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TYPE Journal Article YEAR 2015
OSTI

Exploring magnetized liner inertial fusion with a semi-analytic model

Mcbride, Ryan; Slutz, Stephen A.; Sinars, Daniel; Vesey, Roger A.; Gomez, Matthew R.; Sefkow, Adam B.; Hansen, Stephanie B.; Cochrane, Kyle; Rovang, Dean C.; Lamppa, Derek C.; Geissel, Matthias; Harvey-Thompson, Adam J.; Schmit, Paul; Knapp, P.F.; Awe, Thomas J.; Jennings, Christopher A.; Martin, Matthew R.; Peterson, K.J.; Rochau, G.A.; Porter, John L.; Stygar, William A.; Cuneo, Michael E.

Abstract not provided.

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TYPE Conference Poster YEAR 2015
DOIOSTI

Assessment of Scaled Rotors for Wind Tunnel Experiments

Maniaci, David C.; Kelley, Christopher L.; Chiu, Phillip

Rotor design and analysis work has been performed to support the conceptualization of a wind tunnel test focused on studying wake dynamics. This wind tunnel test would serve as part of a larger model validation campaign that is part of the Department of Energy Wind and Water Power Program’s Atmosphere to electrons (A2e) initiative. The first phase of this effort was directed towards designing a functionally scaled rotor based on the same design process and target full-scale turbine used for new rotors for the DOE/SNL SWiFT site. The second phase focused on assessing the capabilities of an already available rotor, the G1, designed and built by researchers at the Technical University of München.

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TYPE Other Report YEAR 2015
DOIOSTI

Development and Evaluation of a Sandia Cooler-based Refrigerator Condenser

Johnson, Terry A.; Kariya, Harumichi A.; Leick, Michael T.; Zimmerman, Mark D.; Li, Manjie Y.; Du, Yilin; Lee, Hoseong H.; Hwang, Yunho Y.; Radermacher, Reinhard R.

This report describes the first design of a refrigerator condenser using the Sandia Cooler, i.e. air - bearing supported rotating heat - sink impeller. The project included baseline performance testing of a residential refrigerator, analysis and design development of a Sandia Cooler condenser assembly including a spiral channel baseplate, and performance measurement and validation of this condenser system as incorporated into the residential refrigerator. Comparable performance was achieved in a 60% smaller volume package. The improved modeling parameters can now be used to guide more optimized designs and more accurately predict performance.

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TYPE SAND Report YEAR 2015
DOIOSTI
Results 47201–47300 of 99,299
Results 47201–47300 of 99,299