<abstract xmlns="http://www.w3.org/1999/xhtml">

This paper presents an analysis and results of experimental tests of full-scale prefabricated balcony sets with dimensions (width × length × height): 2.0 m × 2.78 m × 0.186 m (in a slope to 0.17 m). The sets consist of reinforced concrete slabs (balcony and ceiling) connected with each other with double-type balcony connections. The paper analyses the impact of variable parameters on the load bearing capacity of the elements. Additionally, an overview of current scientific and technical papers in the field of balcony connections is provided.
</abstract>

Experimental tests of steel double-type balcony connections

<abstract xmlns="http://www.w3.org/1999/xhtml">

Discoveries in medicine concerning the influence of light on human physiology provoked the creation of the Human Centric Lighting (HCL) approach. Research dedicated to this mainly focuses on optimally matching light parameters to human needs, e.g. increasing concentration, relaxation, etc. However, only a properly designed light source is capable of meeting HCL goals. This paper focuses on the LED luminaire design used in HCL systems. A review of LEDs dedicated to HCL systems was performed. Their advantages and disadvantages are discussed. The Tunable White (TW) design is shown to be the most universal solution for HCL systems because it enables regulation of the colour temperature and spectrum, depending on user needs. However, TW is also the most complex in design. The problems that might arise during TW luminaire design are discussed. Example strategies on how to solve them, focusing on colour mixing and LED arrangement are given. Practical examples of TW luminaire design are also described, each one with a commentary covering encountered issues and their solutions.
</abstract>

Human centric lighting luminaires: practical design

<abstract xmlns="http://www.w3.org/1999/xhtml">

The article presents an extended model of the Solina-Myczkowce pumped storage power plant with the designed new reservoir and Jawor power plant. Different design cases for the size of the reservoir located on Mt. Jawor were considered. In building the model, a modular approach was used to clearly distinguish elements of the model. In order to capture seasonal changes in both hydrological conditions and power demand values, a period of 365 days was assumed for the simulations. The simulations assumed the form of criteria defining on/off moments and defining the turbine/pump turbine operating regime using the daily variation of energy prices. All constraints arising from the physical parameters and limitations of the cascade facilities as well as those arising from the provisions of the current Water Management Manual for the Solina-Myczkowce cascade were taken into account. The model was designed and executed using the Matlab-Simulink interface. The developed model, assuming various solutions of the additional Jawor-Solina pumped storage power plant, allows multivariate analysis of the effects, both in the sphere of electricity production and financial . The flexible design of the model is a proposal with the help of which it is possible to develop and test decision-making mechanisms in the energy and financial area of cascade operation. Expansion of the energy cascade with a new element of the pumped storage power plant affects the functioning in its current form of the Solina-Myczkowce PSPS. The results show the directions of changes that should be made in the operating strategy of such an expanded energy complex. The analyses are supported by a number of charts and a commentary.
</abstract>

The influence of the planned Solina-Jawor pumped storage power plant on the operating regime of the Solina-Myczkowce power plant

AHEAD OF PRINT

Volume 121 (2024): Issue 1 (January 2024)

Volume 120 (2023): Issue 1 (January 2023)

Volume 119 (2022): Issue 1 (January 2022)

Volume 118 (2021): Issue 1 (January 2021)

Volume 117 (2020): Issue 1 (January 2020)

Volume 116 (2019): Issue 12 (December 2019)

Volume 116 (2019): Issue 11 (November 2019)

Volume 116 (2019): Issue 10 (October 2019)

Volume 116 (2019): Issue 9 (September 2019)

Volume 116 (2019): Issue 8 (August 2019)

Volume 116 (2019): Issue 7 (July 2019)

Volume 116 (2019): Issue 6 (June 2019)

Volume 116 (2019): Issue 5 (May 2019)

Volume 116 (2019): Issue 4 (April 2019)

Volume 116 (2019): Issue 3 (March 2019)

Volume 116 (2019): Issue 2 (February 2019)

Volume 116 (2019): Issue 1 (January 2019)

Volume 115 (2018): Issue 12 (December 2018)

Volume 115 (2018): Issue 11 (November 2018)

Volume 115 (2018): Issue 10 (October 2018)

Volume 115 (2018): Issue 9 (September 2018)

Volume 115 (2018): Issue 8 (August 2018)

Volume 115 (2018): Issue 7 (July 2018)

Volume 115 (2018): Issue 6 (June 2018)

Volume 115 (2018): Issue 5 (May 2018)

Volume 115 (2018): Issue 4 (April 2018)

Volume 115 (2018): Issue 3 (March 2018)

Volume 115 (2018): Issue 2 (February 2018)

Volume 115 (2018): Issue 1 (January 2018)

Volume 114 (2017): Issue 11 (November 2017)

Volume 114 (2017): Issue 10 (October 2017)

Volume 114 (2017): Issue 9 (September 2017)

Volume 114 (2017): Issue 8 (August 2017)

Volume 114 (2017): Issue 7 (July 2017)

Volume 114 (2017): Issue 6 (June 2017)

Volume 114 (2017): Issue 5 (May 2017)

Volume 114 (2017): Issue 4 (April 2017)

Volume 114 (2017): Issue 3 (March 2017)

Volume 114 (2017): Issue 2 (February 2017)

Volume 114 (2017): Issue 1 (January 2017)

Technical Transactions

 The Technical Transactions is an international scientific journal that publishes high quality research results of employees of scientific institutions. The journal was launched by the Lviv Polytechnic in 1883. Since 1946, the publishing tradition of the journal has been continued by the Cracow University of Technology.   Since 2013 onwards, Technical Transactions have been published exclusively in English. All articles are published in open access. The overall focus is on original and rigorous scientific research results which hold international significance.   The aim of Technical Transactions is primarily to enable scientific employees to disseminate original, scientific, theoretical or applied research and to present and promote their achievements on the international stage. Academic research spearheads the development of engineering science and technology. In order to guide this advancement and offer high-level international platform for engineering exchanges, Technical Transactions works with renowned experts and scholars worldwide. The high scientific level of the articles is the responsibility of the Scientific Council, which consists of outstanding specialists. Each text is reviewed by two independent reviewers from outside the author's home institution, including one with foreign affiliation. The content of each article is additionally language-checked by a native speaker.   The scope of the journal cover selected issues related to:    architecture and urban planning,   automation and robotics,   biomedical engineering, construction and operation of machinery,   construction,   electronics and electrical engineering,   energy,   physics,   computer science,   chemical engineering,   material engineering,   engineering environment,   mathematics,   mechanics,   chemical technology,   transport.    Archiving   Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.   Plagiarism Policy   The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Technical Transactions

Volume 121 (2024): Issue 1 (January 2024)

Experimental tests of steel double-type balcony connections

Human centric lighting luminaires: practical design

The influence of the planned Solina-Jawor pumped storage power plant on the operating regime of the Solina-Myczkowce power plant

Cerca

Tutti i volumi ed i numeri in questa rivista