scholarly journals Increase of the energy efficiency of the reversible bulb unit of a tidal power station by regulating the rotational speed

1985 ◽  
Vol 19 (2) ◽  
pp. 55-61 ◽  
Author(s):  
S. G. Dmitriev ◽  
A. V. Pikovskii
Keyword(s):  
Energy Efficiency ◽  
Rotational Speed ◽  
Power Station ◽  
Tidal Power

scholarly journals Feasibility study and energy efficiency estimation of geothermal power station based on medium enthalpy water

2007 ◽  
Vol 11 (3) ◽  
pp. 135-142 ◽  
Author(s):  
Aleksandra Borsukiewicz-Gozdur ◽  
Wladyslaw Nowak
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Geothermal Energy ◽  
Geothermal Water ◽  
Power Station ◽  
Efficient Utilization ◽  
Geothermal Power Plant ◽  
Geothermal Power Station ◽  
Efficiency Estimation ◽  
Geothermal Power

In the work presented are the results of investigations regarding the effectiveness of operation of power plant fed by geothermal water with the flow rate of 100, 150, and 200 m3/h and temperatures of 70, 80, and 90 ?C, i. e. geothermal water with the parameters available in some towns of West Pomeranian region as well as in Stargard Szczecinski (86.4 ?C), Poland. The results of calculations regard the system of geothermal power plant with possibility of utilization of heat for technological purposes. Analyzed are possibilities of application of different working fluids with respect to the most efficient utilization of geothermal energy. .

scholarly journals A tidal power environmental impact assessment: case study of the Kislogubskaija experimental tidal power station (Russia)

1997 ◽  
pp. 101-105 ◽  
Author(s):  
N. N. Marfenin ◽  
O. I. Malutin ◽  
A. N. Pantulin ◽  
N. M. Pertzova
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Power Station ◽  
Tidal Power

Long-term changes in muddy fine sand community of the Rance Basin: role of recruitment

2001 ◽  
Vol 81 (4) ◽  
pp. 553-564 ◽  
Author(s):  
Nicolas Desroy ◽  
Christian Retière
Keyword(s):  
Dominant Species ◽  
General Rule ◽  
Fine Sand ◽  
Mean Value ◽  
English Channel ◽  
Power Station ◽  
Tidal Power ◽  
Short Period

Dynamics of the Abra alba muddy fine sand community of the Rance Basin (western English Channel), initially sampled in one station by Retière at the beginning of the 1970s after the tidal power station built at the mouth of the estuary went into service, was reassessed from 1995 to 1997. Results showed a more ‘mature’ community in 1995–1997 with an increase in the number of species. After a short period, in spring 1995, during which the structure of the community was comparable to those described in 1972–1973, the assemblage was characterized by a great interannual structural stability. Densities of dominant species seem to fluctuate around a mean value comparable to the carrying capacity of the biota for these species. The recruitment of the dominant species with a long life span appears low compared to the densities of adults but seems sufficient to assure the replacement of individuals. Our results suggest that the pattern of massive recruitment followed by high mortality rates could not be the general rule and that a pattern of moderate recruitment followed by low post-settlement mortality of recruits should be more frequent.

Penzhina tidal power station (transmission of 190 TWhr of environmentally clean energy to North America)

1994 ◽  
Vol 28 (11) ◽  
pp. 686-691
Author(s):  
L. B. Bernshtein
Keyword(s):  
North America ◽  
Clean Energy ◽  
Power Station ◽  
Tidal Power

A new preset refueling mode for gasoline dispenser using frequency converter and flow rate signals

2016 ◽  
Vol 230 (6) ◽  
pp. 440-446
Author(s):  
Yajun Liu ◽  
J Cai ◽  
ZY Wang ◽  
ZY Huang
Keyword(s):  
Energy Efficiency ◽  
Flow Rate ◽  
Rotational Speed ◽  
Frequency Converter ◽  
Solenoid Valve ◽  
Measurement Transducer ◽  
Variable Speed ◽  
Service Station ◽  
Pumping System

Fuel dispenser is an integrated fuel pumping and metering system for automotive refueling at the service station. In this paper, we develop a preset refueling mode for the dispenser. A frequency converter and the flow rate signal from the measurement transducer are utilized instead of the solenoid valve, which is used to control the flow rate in the traditional refueling mode. With variable speed pumping system, the rotational speed of the pump is adjusted to achieve the desired flow rate and head necessary for the application. All the experiments were operated on a real dispenser system. How the frequency influences the refueling accuracy is observed. Through choosing a suitable frequency, not only accuracy but also energy efficiency improves compared with the traditional refueling mode. It is able to provide a reference for authority to fill in gaps in low-quantity (less than 5 L) refueling.

Energy in the 1980s - Hydro (including tidal) energy

1974 ◽  
Vol 276 (1261) ◽  
pp. 485-493
Keyword(s):  
World Wide ◽  
Tidal Energy ◽  
Supply System ◽  
Electricity Supply ◽  
Power Station ◽  
Tidal Power ◽  
Water Power ◽  
Power Resources ◽  
The United Kingdom ◽  
Economic Use

This paper reviews, on a world-wide basis, the production from hydro-electric installations and forecasts which have been made of potential water-power resources. Various types of development are described. It considers how hydro-electric resources can best be used in an interconnected electricity supply system with thermal and nuclear generation, including pumping to assist in the economic use of other fuels. Hydro-electric development in the United Kingdom is briefly described. The availability of tidal energy is reviewed, and reference made to the Ranee Tidal Power Station in France.

Use of epoxy compounds in structural elements and insulation in the Kislogubsk tidal power station

1971 ◽  
Vol 5 (2) ◽  
pp. 128-134 ◽  
Author(s):  
L. A. Igonin ◽  
P. A. Pshenitsyn ◽  
V. I. Sakharov
Keyword(s):  
Structural Elements ◽  
Power Station ◽  
Tidal Power
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