In the high intensity areas, application of interlayer spacing technology can achieve unity quality and seismic performance high-rise buildings with enlarged base multiple tower layers. Through comparison analysis structural schemes an tower-layer building, ultimate isolation scheme was adopted, its response were analyzed studied. The results show that overall effect story technique is good, wh...

Due to the change of direct normal irradiance (DNI) and output power load, receiver solar tower is in an unstable state actual operation. In this paper, a 100 MW external cylindric designed modelled. The dynamic comprehensive model established for receiver, including thermal mechanical equations. temperature control strategy applied model. validity verified by disturbance experiments, DNI, inle...

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 ...

This paper presents a universal engineering model, which can be used to formulate both counterflow and crossflow cooling towers. By using fundamental laws of mass and energy balance, the effectiveness of heat exchange is approximated by a second order polynomial equation. Gauss-Newton and Levenberg-Marquardt methods are then used to determine the coefficients from manufactures data. Compared wi...

the world largest adobe citadel in bam (arg-e bam) was damaged seriously in the 26 december 2003 earthquake. since then many studies and researches have been done to restore this historical complex. one of the first structures in the citadel for which a restoration plan was prepared over a project was adobe tower no. 32. the objective of this project was studying the seismic behaviour of the to...

The variational problem of the movement mode selection for load outreach change mechanism during a steady-state tower crane slewing was formulated and solved in paper, that ensures minimization drive motor power. is nonlinear, so we used modified PSO-Rot-Ring particle swarm met heuristic method its solution. Low- high-frequency oscillations elements start-up were detected optimization process. ...

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Stability properties of “magnetic tower” jets propagating in the gravitationally stratified background have been examined by performing three-dimensional magnetohydrodynamic simulations. The current-carrying, Poynting flux-dominated magnetic tower jet, which possesses a highly wound helical magnetic field, is subject to the current-driven instability (CDI). We find that, under general physical ...