scholarly journals The application of hybrid photovoltaic system on the ocean-going ship: engineering practice and experimental research

2018 ◽  
Vol 18 (1) ◽  
pp. 56-66 ◽  
Author(s):  
Yuwei Sun ◽  
Xinping Yan ◽  
Chengqing Yuan ◽  
Xujing Tang ◽  
Reza Malekian ◽  
...  
Keyword(s):  
Experimental Research ◽  
Photovoltaic System ◽  
Engineering Practice ◽  
Ship Engineering

scholarly journals РОЗРОБЛЕННЯ ЕКСПЕРИМЕНТАЛЬНОЇ УСТАНОВКИ ДЛЯ ВИПРОБУВАНЬ ПРОГРАМНО-АПАРАТНИХ ЗАСОБІВ УПРАВЛІННЯ МІКРОЕНЕРГЕТИЧНИМИ МЕРЕЖАМИ ЛОКАЛЬНИХ ОБ’ЄКТІВ

2021 ◽  
Vol 148 (4) ◽  
pp. 14-24
Author(s):  
О. О. Шавьолкін ◽  
І. О. Шведчикова ◽  
Г. В. Кругляк ◽  
Р. М. Марченко ◽  
А. В. Пісоцький
Keyword(s):  
Experimental Research ◽  
Radiation Power ◽  
Practical Importance ◽  
Photovoltaic System ◽  
Storage Battery ◽  
Experimental Setup ◽  
Daily Cycle ◽  
Static Tests ◽  
Experimental Installation ◽  
Software And Hardware

Development of the experimental installation for testing of the software and hardware tools of management of a photovoltaic system of a local facility connected to the grid, which, along with checking its operability, will allow analyzing the operation and adjusting the settings of systems with different parameters under different weather conditions, load schedules and operating modes. Method. Experimental research with preliminary justification of settings based on calculations and simulation data obtained in the Matlab software package. Results.  The  structure  and  experimental  installation  on  the  base  of  the  photovoltaic  system  with storage  battery  and  using  a  photovoltaic  battery  emulator  with  software  control  of  generation  and  load power were developed. The software modules of the system have been developed. According to the results of the simulation, the moments of time are determined when the operating mode is switched in the experimental setup. The experimental setup was tested in static and dynamic modes. Static tests were aimed at checking the functioning of the photovoltaic battery emulator in accordance with the specified solar radiation power and  the  temperature  of  the  photo  module,  as  well  as  checking  the  correctness  of  the  model  used  in  the program. Tests in statics with fixed parameters and in dynamics in the daily cycle, in general, confirmed the efficiency of the proposed solutions. Scientific novelty. The method of experimental research in the daily cycle of photovoltaic systems control with the use of software-controlled emulators of a photovoltaic battery and load with power and time scaling  was  developed.  This,  along  with  the  acceleration  of  the  experiment,  allows  us  to  estimate  the effectiveness  of  the  tested  systems  at  different  ratios  of  system  parameters  and  adjust  the  functioning algorithms.  Practical  importance.  The  proposed  solutions  for  the  implementation  of  the  experimental installation  allow  minimizing  material  costs  and  time  costs  in  the  process  of  testing  and  development  of software and hardware control tools of a photovoltaic system with storage battery.

Overview of Sustainable Cementitious Composites Properties with Added Recycled Rubber

2015 ◽  
Vol 806 ◽  
pp. 119-126
Author(s):  
Dragica Jevtić ◽  
Dimitrije Zakić ◽  
Aleksandar Savić ◽  
Veis Šerifi
Keyword(s):  
Experimental Research ◽  
Partial Replacement ◽  
Cementitious Composites ◽  
Engineering Practice ◽  
Self Compacting Concrete ◽  
Ordinary Concrete ◽  
Recycled Rubber

The paper is focused to the properties of cementitious composites such as: mortar, ordinary concrete and self-compacting concrete made by means of recycled rubber granulate as a partial replacement for commonly used aggregate. This paper, together with the results of authors' own experimental research on rubberized cementitious composites is presented in detail. The comprehensive conclusion suggests that this type of material can be successfully applied in many fields of engineering practice, thanks to its sustainability, elasticity and durability.

Experimental Research of Bottom Chord Splice Joints with Variable Cross-Section in Steel Roof Truss

2011 ◽  
Vol 105-107 ◽  
pp. 1065-1068
Author(s):  
Hong Xia Wan ◽  
De Xu Yan ◽  
Xiao Ping Wang
Keyword(s):  
Cross Section ◽  
Experimental Research ◽  
Failure Modes ◽  
Variable Cross Section ◽  
Steel Tube ◽  
Engineering Practice ◽  
Variable Cross ◽  
Test Setup ◽  
Roof Truss ◽  
Tension Capacity

A workshop’s roof is designed to use steel tube trusses with the span of 24m. There are three kinds of variable cross-section splice joints of the roof truss bottom chord. Nine splice joint specimens, three for each kind, were tested to obtain their tension capacity and failure modes. A special test setup is designed to introduce the tension load to the splice joint specimen. The paper detailed introduced the test setup and method, discussed the failure load and failure mode of the joints. Experimental research indicated that the bottom chord splice joint with variable cross-section of the roof is safe, reliable, having high bearing capacity. The research also validated the correctness of the design and calculation, and provided the basis for the application of such joints in the engineering practice.

Ethics in Engineering Practice and Research

2011 ◽  
Author(s):  
Caroline Whitbeck
Keyword(s):  
Engineering Practice

Secondary Transfer Effect of Contact

2009 ◽  
Vol 40 (2) ◽  
pp. 55-65 ◽  
Author(s):  
Thomas F. Pettigrew
Keyword(s):  
Cognitive Dissonance ◽  
Experimental Research ◽  
Intergroup Contact ◽  
Transfer Effect ◽  
Evaluative Conditioning ◽  
Transfer Effects ◽  
Secondary Transfer ◽  
Primary Reduction

This paper reviews the evidence for a secondary transfer effect of intergroup contact. Following a contact’s typical primary reduction in prejudice toward the outgroup involved in the contact, this effect involves a further, secondary reduction in prejudice toward noninvolved outgroups. Employing longitudinal German probability samples, we found that significant secondary transfer effects of intergroup contact exist, but they were limited to specific outgroups that are similar to the contacted outgroup in perceived stereotypes, status or stigma. Since the contact-prejudice link is bidirectional, the effect is inflated when prior prejudice reducing contact is not controlled. The strongest evidence derives from experimental research. Both cognitive (dissonance) and affective (evaluative conditioning) explanations for the effect are offered.

Review of Human Social Behavior: A Contemporary View of Experimental Research.

1972 ◽  
Vol 17 (2) ◽  
pp. 78-78
Author(s):  
EDWARD E. JONES
Keyword(s):  
Social Behavior ◽  
Experimental Research ◽  
Contemporary View ◽  
Human Social Behavior

Review of Foundations of Experimental Research. 3rd ed.

1983 ◽  
Vol 28 (10) ◽  
pp. 805-805
Author(s):  
Roger E. Kirk
Keyword(s):  
Experimental Research
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