scholarly journals Improving energy efficiency of power electric power plants of low-tonnage passenger ships

2021 ◽  
pp. 46-51
Author(s):  
А. F. Burkov ◽  
◽  
V. V. Mikhanoshin ◽  
V. K. Nguyen ◽  
◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Traffic Congestion ◽  
High Speed ◽  
Power Plants ◽  
Technical Solution ◽  
Electric Power Plants ◽  
Passenger Transportation ◽  
Passenger Ships ◽  
Harmful Emissions ◽  
The Cost

The article is devoted to solving the problem of improving the energy efficiency of power plants of high-speed lowtonnage (planing) vessels used for passenger transportation between coastal settlements on the example of the port of Vladivostok located on the Muravyov-Amursky Peninsula, which has mainly land communication with settlements located on the coast. The oversaturation of motor transport, due to the need for communication between localities, which are usually characterized by dense buildings, is one of the main causes of many hours of traffic congestion, which worsen the environmental situation and increase social tension in society. At the same time, the tourist attractiveness of Primorye is also decreasing. One of the promising areas for solving this transport problem is the use of low-tonnage passenger vessels, in particular planing vessels, with hybrid electrified power propulsion systems. According to the available data, such vessels have reduced consumption of fuel and lubricants necessary for the operation of power plants and reduction in harmful emissions into the surrounding atmosphere by more than two times compared to similar traditional diesel vessels. In addition, the prospects of the proposed scientific and technical solution are due to the reduction in the time of passenger transportation while reducing the cost of travel

Система дистанційного моніторингу та керування кліматичними параметрами приміщень в процесі промислового виробництва

2020 ◽  
pp. 19-23
Author(s):  
Ігор Бережний ◽  
◽  
Адріан Наконечний ◽  
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Technological Process ◽  
Remote Monitoring ◽  
High Speed ◽  
Monitoring And Control ◽  
Remote Monitoring And Control ◽  
The Cost ◽  
And Control ◽  
Communication Lines

Based on the research and comparative analysis of existing systems, an algorithm for remote monitoring and control of the technological process using IoT technologies is proposed and developed. We consider a system with flexible algorithms, which combines different data protocols using Wi-Fi technology, which allows you to use this type of system in any industry safely with high speed, energy efficiency and without the cost of communication lines.

scholarly journals TECHNICAL FND OPERATIONAL ASPECTS OF THE HIGH-SPEED VESSELS USE IN THE RUSSIAN FEDERATION TRANSPORT SYSTEM

2020 ◽  
pp. 62-70
Author(s):  
Viktor I. Lyubimov ◽  
Yuri G. Varakosov ◽  
Viktor I. Baryshev
Keyword(s):  
High Speed ◽  
Operating Costs ◽  
The North ◽  
Passenger Transportation ◽  
Operational Characteristics ◽  
Passenger Ships ◽  
The Russian Federation ◽  
Technical And Economic Indicators ◽  
North Western ◽  
Operational Aspects

    Topical issues of justification and use of various types of passenger transport are considered. Use peculiarities and operating costs of automobile, railway, air, sea and river transport are analyzed on the example of the North-Western region of Russia. Special attention is paid to the use of sea and river high-speed passenger ships. Technical and operational characteristics of new types of high-speed passenger ships are described. A feasibility study of using various types of high-speed passenger ships has been performed. It is shown that according to a number of technical and economic indicators of the passenger transportation efficiency, WIG vessels exceed the characteristics of other types of high-speed vessels.

scholarly journals MARKET AND DEVELOPMENT TRENDS IN COGENERATION AND COMBINED HEAT AND POWER PLANTS

2018 ◽  
Vol 20 ◽  
pp. 86-97
Author(s):  
Jan Slad ◽  
Andreas Pickard ◽  
Frank Strobelt
Keyword(s):  
Power Generation ◽  
Energy Efficiency ◽  
Power Plants ◽  
Economic Value ◽  
Cost Effective ◽  
Combined Heat And Power ◽  
Development Trends ◽  
Eu Countries ◽  
Increase Energy Efficiency ◽  
The Cost

The transition of energy mix in Europe is placing greater focus on energy efficiency. Lawmakers in some of EU countries have already recognized that combined heat and power generation (cogeneration, CHP) can help increase energy efficiency. Targeted promotion and subsidization have raised the cost-effective profitability of cogeneration plants significantly. But how can the economic value of this investment be maximized?

The Effect of Receiver Optical Properties on Solar Thermal Electric Systems

1981 ◽  
Vol 103 (3) ◽  
pp. 207-212
Author(s):  
P. J. Call ◽  
G. J. Jorgensen ◽  
J. R. Pitts
Keyword(s):  
Power Plants ◽  
Cost Effective ◽  
Operating Conditions ◽  
Solar Thermal ◽  
System Capacity ◽  
Optimum Operating ◽  
Electric Power Plants ◽  
Computer Calculations ◽  
Detailed Computer ◽  
The Cost

The importance of reducing the thermal emittance of the receiver surface on the cost effective operation of intermediate and high temperature (≥ 400 °C) solar thermal electric power plants is discussed. Computer codes for seven systems (point and line focus) are used to independently determine optimum operating conditions for selective (low emittance) and nonselective receiver surfaces. The detailed computer calculations show excellent agreement with numbers generated from a simplified analytical model indicating that system dynamics are a secondary effect in this sensitivity analysis. This study reveals that improvements in system cost effectiveness of 5 to 10 percent for desert environments can be produced by reducing receiver emittance from 0.95 to 0.3. The system operating temperature is determined not to be a critical parameter and little effect is observed on the system capacity factor.

The Research of an Energy Recovery with SRM during Backflow Period

2013 ◽  
Vol 791-793 ◽  
pp. 1913-1916
Author(s):  
Min Xia
Keyword(s):  
Energy Efficiency ◽  
Energy Recovery ◽  
High Speed ◽  
Control Method ◽  
Battery Life ◽  
Heavy Load ◽  
Switched Reluctance ◽  
Low Speed ◽  
Light Load ◽  
The Cost

Facing the situation that battery life mileage is short and energy efficiency is low, The principle is introduced; control method of energy recovery during the backflow period and of improving the energy recovery efficiency in electronic operation are proposed. On the basis of a 500w switched reluctance motor, the mathematical model of SRM is built. In the model, we use the PWM, APC, and CCC control methods at the same time. The best turn-on angle and the turn-off angle are measured in the light load and heavy load conditions through simulation. The energy efficiency in the heavy load and high speed increases 6 percent; energy efficiency in the heavy load and low speed increases 4.5 percent; energy efficiency in the light load and high speed increases 14.5 percent; energy efficiency in the light load and low speed increases 2 percent. This is instructive to improve the efficiency of energy recovery reduce the cost.

scholarly journals Improving Energy and Environmental Efficiency of Combined Heat-and Power Plant Based on Absorption Heat Transformers

2020 ◽  
Vol 178 ◽  
pp. 01010
Author(s):  
Yu. V. Yavorovsky ◽  
A. I. Bartenev ◽  
I. A. Sultanguzin ◽  
A Sh Alimgazin ◽  
S. A. Prishchepova ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Power Supply ◽  
Power Plants ◽  
Combined Heat And Power ◽  
Environmental Efficiency ◽  
Emissions Reduction ◽  
Harmful Emissions ◽  
Efficiency Increase ◽  
Supply Systems

In the present paper the scheme for increasing the energy efficiency of combined heat and power plants (CHPP) using absorption heat transformers (AHT) is considered. The aim of the study is to increase the energy and environmental efficiency of natural gas use in power supply systems by application steam turbine plants and absorption heat transformers. The simulation of CHPP modernization and a harmful emissions dispersion assessment were carried out using the following software tools: ISC Manager, Thermoflex. All the calculations were made for one power unit of the CHPP in Moscow. Subsequently, the obtained data on energy efficiency increase and harmful emissions reduction were multiplied on the whole power system of Moscow, the main source of heat and electricity of which are the CHPP’s of PJSC “Mosenergo”.

Drying and heating of scrap metal at steelmaking: industrial safety, economics, ecology

2020 ◽  
Vol 76 (12) ◽  
pp. 1353-1258
Author(s):  
V. A. Spirin ◽  
V. E. Nikol’skii ◽  
D. V. Vokhmintsev ◽  
A. A. Moiseev ◽  
P. G. Smirnov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
High Efficiency ◽  
Steel Production ◽  
Scrap Metal ◽  
Industrial Safety ◽  
Technical Solution ◽  
Metal Charge ◽  
Basic Task ◽  
Scrap Heating ◽  
Winter Time

At steel production based on scrap metal utilization, the scrap heating before charging into a melting facility is an important way of energy efficiency increase and ecological parameters improving. In winter time scrap metal charging with ice inclusions into a metal melt can result in a considerable damage of equipment and even accidents. Therefore, scrap preliminary drying is necessary to provide industrial safety. It was shown, that in countries with warm and low-snow climate with no risk of scrap metal icing up during its transportation and storing in the open air, the basic task being solved at the scrap drying is an increase of energy efficiency of steelmaking. InRussiathe scrap metal drying first of all provides the safety of the process and next - energy saving. Existing technologies of scrap metal drying and heating considered, as well as advantages and drawbacks of technical solutions used at Russian steel plants. In winter time during scrap metal heating at conveyers (Consteel process) hot gases penetrate not effectively into its mass, the heat is not enough for evaporation of wetness in the metal charge. At scrap heating by the furnace gases, a problem of dioxines emissions elimination arises. Application of shaft heaters results in high efficiency of scrap heating. However, under conditions of Russian winter the upper scrap layers are not always heated higher 0 °С and after getting into a furnace bath the upper scrap layers cause periodical vapor explosions. The shaft heaters create optimal conditions for dioxines formation, which emit into atmosphere. It was shown, that accounting Russian economic and nature conditions, the metal charge drying and heating in modified charging buckets by the heat of burnt natural gas or other additional fuel is optimal. The proposed technical solution enables to burnt off organic impurities ecologically safely, to melt down ice, to evaporate the wetness in the scrap as well as to heat the charge as enough as the charging logistics enables it. The method was implemented at several Russian steel plants. Technical and economical indices of scrap metal drying in buckets under conditions of EAF-based shop, containing two furnaces ДСП-100, presented.

Analysis of energy efficiency of polder of pumping stations in a Slavsk district of the Kaliningrad region

2020 ◽  
pp. 15-20
Author(s):  
Yuriy Spirin ◽  
Vladimir Puntusov
Keyword(s):  
Energy Efficiency ◽  
Agricultural Land ◽  
Statistical Processing ◽  
Drainage Rate ◽  
Pumping Stations ◽  
Kaliningrad Region ◽  
Pumping Equipment ◽  
Excess Power ◽  
The Cost ◽  
Domestic Power

In the Kaliningrad region there are about 70 % of all polder lands in Russia. On these lands with high potential fertility, it is advisable to intensive agriculture. The area for the average moisture year is an area with excessive moisture, which indicates the need to maintain the rate of drainage on agricultural land. Many different factors play a role in ensuring the drainage rate, one of which is pumping stations and pumping equipment installed on them. An important parameter in the use of pump-power equipment is energy consumption, since in this industry it is a considerable expense item. Improving the energy efficiency of pumping stations on polders is a pressing issue today. At the majority of polder pumping stations, domestic power pumping equipment is installed with excess power and head of 4–8 meters, and a new one is selected based on the maximum possible head in a given place. In the Kaliningrad region, the energy efficiency of polder pumping equipment has never been analyzed. In this paper, a statistical processing of the geodesic pressure of water at the polder pumping stations of the Slavsk region for 2000–2002 was carried out. On the basis of these data and data on the hydraulic characteristics of pressure pipelines, the calculated water pressures were determined for the rational selection of pumping equipment. The calculation of the economic efficiency of pumps with optimal power compared with pumps of excess capacity. The results of the study can serve as a justification for the transition to the pumping equipment with less power and pressure, which will lead to a decrease in the cost of money for electricity.

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