Relevance of power saving at mining farms

2019 ◽  
Vol 2 (2) ◽  
pp. 102-110 ◽  
Author(s):  
V. I. Samokhin ◽  
D. V. Samokhin ◽  
E. E. Babkin ◽  
I. M. Petrov
Keyword(s):  
Electric Power ◽  
Power Efficiency ◽  
Cooling System ◽  
Power Saving ◽  
Electric Circuit ◽  
Alternate Current ◽  
Mining Equipment ◽  
Reactive Component ◽  
Power Sources ◽  
Constituent Component

Introduction: mining has recently aroused substantial interest inRussia due to the rise in crypto-currency rates. Therefore, new coins are harder to obtain, and mining equipment turns more expensive. Computation capacities are provided by mining farms, and the number of their computation modules reaches 20 units, if operated by natural persons, and 300 – 5,000 units, if operated by major computation centres. One of the factors restraining the development of industrialscale mining, consists in high power consumption rates demonstrated by major computation centres. Therefore, the problem of high-quality power supply to mining farms gains relevance both in terms of the efficient use of electric power sources and in terms of the protection of expensive machines.Methods: the co-authors have analyzed power saving problems that accompany the incorporation of industrial mining farms, substantiated the need to design and develop the unique equipment, connectable to mining farms because the circulation of the reactive component of electric power between the source of alternate current and the accumulator causes losses of energy in the wires of the electric circuit. The overloading of the circuit by the reactive current causes the need to improve the capacity of the energy source, reduces the circuit voltage and makes it fluctuate. The co-authors have performed an overview of air and liquid-based cooling systems applied to mining farms. They also describe the principle of the cooling system involving submersion, which has a strong potential as a constituent component of major mining farms.Findings and discussion: the co-authors have formulated their idea aimed at the improvement of the performance of mining farms. They present a power saving system centered around the reactive capacity compensation, filtration of upper harmonics and compensation of voltage tilts.Conclusion: the co-authors have formulated the objectives of research in the area of power efficiency and capacity improvement at mining farms.

Electric Power Saving for Acticontact Aeration Blower

2015 ◽  
Vol 69 (6) ◽  
pp. 617-622
Author(s):  
Kenichiro Fukushima
Keyword(s):  
Electric Power ◽  
Power Saving

Extended electric power sources

2018 ◽  
Author(s):  
T.A. Konev ◽  
V.A. Kuzmin ◽  
E. Yu. Mutovina ◽  
R.D. Puzhaykin ◽  
Vladimir Salomatov
Keyword(s):  
Electric Power ◽  
Electric Current ◽  
Load Resistance ◽  
Active Power ◽  
Operating Voltage ◽  
Power Sources ◽  
Distributed Parameters ◽  
Analytical Expressions ◽  
Characteristic Resistance ◽  
Length Effects

Chemical sources of current are investigated as lines with distributed parameters. Analytical expressions are obtained for the voltage and active power values of the source at different distances from the beginning of the cell as well as dependences of the working voltage and active power on the source length. Effects of a reduction in the operating voltage and active power are due to the flow of electric current along the source during operation. The magnitude of these effects depends not only on the length of the source, but also on the ratio of characteristic resistance to the load resistance.<br>

Science and Technology Text Mining: Electric Power Sources

2004 ◽  
Author(s):  
Ronald N. Kostoff ◽  
Rene Tshiteya ◽  
Kirstin M. Pfeil ◽  
James A. Humenik ◽  
George Karypis
Keyword(s):  
Text Mining ◽  
Electric Power ◽  
Science And Technology ◽  
Power Sources

scholarly journals Toward Green Sensor Field by Optimizing Power Efficiency Using D-Policy M/G/1 Queuing Systems

2013 ◽  
Vol 9 (3) ◽  
pp. 241-260 ◽  
Author(s):  
Fuu-Cheng Jiang ◽  
Hsiang-Wei Wu ◽  
Fang-Yi Leu ◽  
Chao-Tung Yang
Keyword(s):  
Sensor Networks ◽  
Power Consumption ◽  
Power Efficiency ◽  
Ieee 802.15.4 ◽  
Power Saving ◽  
Rechargeable Batteries ◽  
Sensor Nodes ◽  
Traffic Load ◽  
Mathematical Framework ◽  
Sensor Field

Power efficiency is a crucially important issue in the IEEE 802.15.4/ZigBee sensor networks (ZSNs) for majority of sensor nodes equipped with non-rechargeable batteries. To increase the lifetime of sensor networks, each node must optimize power consumption as possible. Among open literatures, much research works have focused on how to optimally increase the probability of sleeping states using multifarious wake-up strategies. Making things different, in this article, we propose a novel optimization framework for alleviating power consumption of sensor node with the D-policy M/G/1 queuing approach. Toward green sensor field, the proposed power-saving technique can be applied to prolong the lifetime of ZSN economically and effectively. For the proposed data aggregation model, mathematical framework on performance measures has been formulated. Data simulation using MATLAB tool has been conducted for exploring the feasibility of the proposed approach. And also we analyze the average traffic load per node for tree-based ZSN. Focusing on ZigBee routers deployed at the innermost shell of ZSN, network simulation results validate that the proposed approach indeed provides a feasibly cost-effective approach for prolonging lifetime of ZSNs.

A Method to Optimize the Operation of Pumping System

2009 ◽  
Author(s):  
Chao Liu
Keyword(s):  
Electric Power ◽  
Cooling System ◽  
Operation Performance ◽  
Power Cost ◽  
Pump Operation ◽  
Fundamental Factor ◽  
Pumping System ◽  
Long Time ◽  
Operation Cost ◽  
Modeling Equation

There are many pumps working in generating plant for pumping water in the cooling system. The pumps consume a big amount of electricity especially in large generating plant which operates continuously for long time. Therefore, the electric power cost will increase with increasing of operation cost of the pumping system. It is very important to minimize the operation cost of the pumping system to optimize the use of generating plant assets. In order to optimize the operation of pumping system the method of adjusting pump rotation speeds are often adopted. The fundamental factor of optimizing pump operation is to obtain the operation performance. Theoretically the affinity law (special modeling Equation) of pumps can be applied to convert the performances of pumps under rated speeds to variable rotation speeds. However the affinity law can only be applied in the region of pump operation around Best Efficiency Point with an acceptable precision. Also the affinity law derived from the Modeling Equation can only be valid to pump or pump bowl rather than pumping system. In this paper a method was conducted to determine the performances of pumping system based on the computational and experimental results. The principle of optimizing the pumping system is discussed. Finally the optimizing operation alternative of the pumping system is presented.

Remote Interior Temperature Control of Parked Vehicles

2015 ◽  
Vol 1115 ◽  
pp. 494-498
Author(s):  
Marsad Latief ◽  
Md. Azhar Ali ◽  
Abdul Mannan ◽  
Tanveer Saleh ◽  
Moinul Bhuiyan ◽  
...  
Keyword(s):  
Greenhouse Effect ◽  
Power Efficiency ◽  
Cooling System ◽  
Significant Rise ◽  
Internal Temperature ◽  
User Friendliness ◽  
Modern Approach ◽  
Smart System ◽  
To Come ◽  
Reliable Solution

Rise of interior temperature during daytime for a fully locked and parked car is a problem that needs to be addressed. The main reason for this significant rise in interior temperature is the heat that is trapped inside because of the closed glass window and greenhouse effect. This situation is very uncomfortable to get into the car that is exposed to sunlight for a prolonged period especially for toddlers and pets. Several measures have been proposed and some of them implemented to counter this issue. An example would be leaving the windows partially open when the car is parked to let air flow. More modern approach includes installing an external ventilation unit like a blower to regulate the internal temperature. However, none of these solutions are reliable and beneficent and moreover at times leave serious security loopholes apart from other typical drawbacks like power inefficiency and high cost. As such, there was an immense requirement to come up with a ‘smart and reliable’ solution for this issue keeping in mind factors like cost, power efficiency, user friendliness and reliability. A smart system was thus developed which gave a comprehensive control over the cooling system of the vehicle from a remote area. Moreover, other customizable necessary features like window control, safety and security has also been included. The device has been tested successfully on a Perudua Kalisa. Results obtained from the experiment shows interior temperature of the car can be brought to a comfortable range of 27-28o C within 15 minutes by implementing this device.

scholarly journals Performance of Rooftop Grid Connected Solar Photovoltaic System

2020 ◽  
Vol 9 (1) ◽  
pp. 1056-1062
Keyword(s):  
Electric Power ◽  
Power Efficiency ◽  
Polycrystalline Silicon ◽  
Photovoltaic System ◽  
Experimental Setup ◽  
Solar Photovoltaic ◽  
Grid System ◽  
Time Data ◽  
Solar Power Generation ◽  
Solar Photovoltaic System

Solar Technology is fast becoming a preferred trend in the field of electric power. This is because of the fact that solar energy, freely available is transferred into electric power without causing any environment hazard. Commercial power system is grid organized system. Therefore, the solar system also needs cooperative to established grid system. Grid connected solar photovoltaic system is a friendly and affordable system for large solar power generation. These systems exhibit good power efficiency beside of their other advantages. Here we pursue our studies on 150 KW grid connected SPV system. In this paper we design and model a 150 KW SPV system and compared its performance with the real time data collected by us through our experimental setup. The experimental setup is based on the module provided by RenewSys DESERV 3M6 with 72 cells on SPV module. This module is a polycrystalline silicon module and was manufactured in the year 2018 and purchased in the same year. In this study important effects that the performance degradation is also considered and the overall results obtained are found satisfactory

Active cooling system for downhole electronics in high temperature environments

2021 ◽  
pp. 1-16
Author(s):  
Wei Minghui ◽  
Cai Wei ◽  
Xu Mingze ◽  
Deng Shuang
Keyword(s):  
High Temperature ◽  
Cooling System ◽  
Capillary Tube ◽  
Thermal Characteristics ◽  
Electric Circuit ◽  
Passive Cooling ◽  
Electronic Components ◽  
Active Cooling ◽  
Temperature Environment ◽  
High Temperature Environment

Abstract Downhole high temperature environment is an important factor affecting the performance of downhole instrument electronic system.At present, various active cooling technologies and passive cooling technologies have been proposed to reduce the temperature of downhole electric circuit system.However, passive cooling technologies can only provide limited cooling capacity for drilling tools under high temperature environment, and the duration of cooling is short, which can not meet the long-time drilling task.This paper presents an Active cooling system(ACS)for downhole electronics and the effects of different temperatures on the performance of electronic components are analyzed.The ACS mainly includes a micro supercharger, condenser tube, evaporation pipe, capillary tube and refrigerant.The theoretical analysis of heat transfer and refrigerant capacity in high temperature environment is carried out.The thermal characteristics of the ACS is evaluated experimentally.The results show that the temperature of electronic components can be reduced to below 163°C in the 200°C downhole environment and components.The geomagnetic field data measured by electronic components at room temperature, 200 °C and with ACS are compared.The results show that ACS can keep electronic components working normally.

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