Wyniki wyszukiwania - BazTech

1

Zestawy hydrauliczne do kotłowni dla instalacji hybrydowych

Żabicki Damian

Rynek Instalacyjny

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2019

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Nr 6

64--66

PL

Instalacje hybrydowe to układy wykorzystujące kilka różnych źródeł ciepła. Zazwyczaj łączy się w nich nowoczesne technologie wytwarzania energii z metodami konwencjonalnymi. Odpowiednie połączenie wielu źródeł ciepła zapewniają m.in. zestawy hydrauliczne, które mogą zastąpić bardziej skomplikowane układy z armaturą.

2

Improving the quality of voltage in the system of traction power supply of direct current

Sychenko V. G., Bosiy D. O., Kosarev E. M.

Archives of Transport

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2015

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Vol. 35, iss. 3

63--70

EN

Purpose of the work is improved approaches to ensure the required quality parameters of voltage in the traction network based on modern technologies and equipment in the application of power distribution system. Actuality. The introduction of high-speed traffic, increase weight standards Train necessitates increasing the carrying capacity of railways. Often the carrying capacity of existing sections electrified at 3.0 kV DC power supply unit limits. Such limitations include voltage decrease on the electric current collector below the allowable value for the normal operation of 2700 (2900 for high-speed V) and heating the contact wires, thereby losing their mechanical strength. Existing power supply system of RS, which have considerable installed traction substations, can not provide the required level of power density traction network for high-speed movement within 1.5 - 2 MW / km and, respectively, the required voltage quality. At the same time, the daily loading of a powerful traction substations in providing intensive schedule of trains does not exceed 20-25%, while the energy loss in traction network peak load increases and reaches 10-15% of the energy consumed. Thus, the existing system of power traction networks is not sufficiently effective and economical, even with the application of existing methods to strengthen them. In our view, the main limiting factor for a given quality of voltage in the traction network is the use of centralized power. From this, the development of measures to improve the quality of voltage in the traction network in the implementation of high-speed traffic in a growing scarcity of energy resources is an urgent task. Scientific novelty. Using distributed power supply system with adjustable supply points combined into intelligent power supply, which enables adaptive change the characteristics of the transfer, conversion and consumption and optimize the mode of functioning of the traction power supply is suggested for improving the quality of voltage in the traction network in the implementation of high-speed and heavy traffic. Practical significance. Improving the quality of voltage in the traction network by using the proposed circuit design traction power supply will ensure the desired mode voltage and power characteristics of the traction network in the implementation of high-speed and heavy traffic while reducing electricity losses by 20-30%.

3

Combined cooling, heat and power (Trigeneration) at Offenburg University of Applied Sciences

Gopisetty S., Treffinger P.

Environmental Biotechnology

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2013

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Vol. 9, No. 1

25--37

EN

The energy supply of Offenburg University of Applied Sciences (HS OG) was changed from separate generation to trigeneration in 2007/2008. Trigeneration was installed for supplying heat, cooling and electrical power at HS OG. In this paper, trigeneration process and its modes of operation along with the layout of the energy facility at HS OG were described. Special emphasis was given to the operation schemes and control strategies of the operation modes: winter mode, transition mode and summer mode. The components used in the energy facility were also outlined. Monitoring and data analysis of the energy system was carried out after the commissioning of trigeneration in the period from 2008 to 2011. Thus, valuable performance data was obtained.

4

Rooftopy HALL MX

Patykiewicz M., Bałazy S., Szafraniec P.

Chłodnictwo i Klimatyzacja

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2005

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nr 3

60-61