77 research outputs found
Evaluation on Energy Performance of Heating Plant System Installed Energy Saving Technologies
This paper is concerned with energy performance
of building heating plant system installed energy saving
technologies. The energy performance from design to
operation phase is evaluated by actual measurements
and model-based simulation analysis, and the fault on
the system operation are detected and was solved
through the evaluation is also reported in this paper.
The building and the heating plant system were
built in Japan in September 2001, and the operation
data have been measured for last about two years. The
model-based simulation using heat load data is also
carried out. The effectiveness of energy saving
technologies is clarified by means of that each
technology is considered in the simulation models on a
step-by-step basis.
Some faults were actually detected in the last
season through these evaluations by measured data and
simulation analysis. This fact can show the importance
of fault detection and diagnosis and optimization in a
system operation phase
Two dimensional modulational instability in photorefractive media
We study theoretically and experimentally the modulational instability of
broad optical beams in photorefractive nonlinear media. We demonstrate the
impact of the anisotropy of the nonlinearity on the growth rate of periodic
perturbations. Our findings are confirmed by experimental measurements in a
strontium barium niobate photorefractive crystal.Comment: 8 figure
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