نتایج جستجو برای: absorption tower
تعداد نتایج: 142053 فیلتر نتایج به سال:
A heuristic method for simultaneous tower and pattern-free field optimization on solar power systems
A heuristic method for optimizing a solar power tower system is proposed, in which both heliostat field (heliostat locations and number) and the tower (tower height and receiver size) are simultaneously considered. Maximizing the thermal energy collected per unit cost leads to a difficult optimization problem due to its characteristics: it has a nonconvex black-box objective function with compu...
In the design of DC system, more than one MVU tower may be used between pole-to-neutral voltages. This is especially common for UHVDC systems. The insulation design of these MVU’s need to be verified by dielectric type tests as specified by international standards. However, the application of several MVU’s in series makes the test set-up complicated. One straightforward solution is to install a...
An updraft tower cooling system is assessed for elimination of water use associated with power plant heat rejection. Heat rejected from the power plant condenser is used to warm the air at the base of an updraft tower; buoyancy-driven air flows through a recuperative turbine inside the tower. The secondary loop, which couples the power plant condenser to a heat exchanger at the tower base, can ...
The vertical profiling of CO2 turbulent fluxes in the atmospheric boundary layer (ABL) is investigated using a coherent differential absorption lidar (CDIAL) operated nearby a tall tower in Wisconsin during June 2007. A CDIAL can perform simultaneous range-resolved CO2 DIAL and velocity measurements. The lidar eddy covariance technique is presented. The aims of the study are (i) an assessment o...
In recent years, speckle interferometry has been successfully applied to various solar phenomena and provides a powerful tool to study solar small-scale structures. The present investigation lays special emphasis on sunspots and sunspot pores. The observations have been performed with the Vacuum Tower Telescope (VTT) at the Observatorio del Teide (Tenerife) in the years from 1992 to 1994. Time ...
We investigate the turbulent velocity eld and its interaction with the granular ow as a function of height in the photosphere and over one turnover time of the granule. We are using a series of spectrograms which includes absorption lines of diierent strengths. The spectrograms were taken at the center of the solar disk with the German Vacuum Tower Telescope (VTT) in Iza~ na (Tenerife, Spain) i...
This paper deals with a detailed morphological and photometric investigation of solar small-scale features in the vicinity of an irregular sunspot group. The observations were performed with the Vacuum Tower Telescope at the Observatorio del Teide/Tenerife on May 18, 1994. The speckle masking method has been applied to reconstruct almost diffraction limited filtergrams in two different waveleng...
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