Optimization of Electrical Energy Consumption and Level Reliability of Water Supply System

2015 ◽  
Vol 72 (2) ◽  
Author(s):  
Mohd Ismail Jusoh ◽  
Folorunso Taliha Abiodun ◽  
Fatimah Sham Ismail ◽  
Sohailah Shafie
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Electric Energy ◽  
Electrical Energy ◽  
High Energy ◽  
Supply System ◽  
Water Supply System ◽  
Operational Cost ◽  
Electric Energy Consumption ◽  
Optimized Model

Generally, high operational cost is associated with all water supply system. This is as a result of the high amount of electric energy consumption ascribed to the system due to its components. The water supply system of the Mara-Japan Industrial Institute (MJII), Beranang, Selangor is one of such system that suffers this challenge of high operational cost. In this paper we have applied the use of an Adaptive Weighted Sum Genetic Algorithm to optimize the system operations such that it minimizes the high energy consumption as well as ensuring the overall reliability of the water level in the reservoir.  The results obtained from the optimized model of the system show a promising and a significant reduction to the tune of 34.97% in the amount of energy consumed as compared with that of normal operations.

scholarly journals A water-energy balance application with adaptations to a brazilian water supply system

2021 ◽  
Vol 10 (10) ◽  
pp. e380101019039
Author(s):  
Matheus Gonçalves Silqueira ◽  
Fernando das Graças Braga da Silva ◽  
Alex Takeo Yasumura Lima Silva ◽  
Matheus David Guimarães Barbedo
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Balance ◽  
Water Supply ◽  
Total Energy ◽  
Electric Energy ◽  
Pressure Control ◽  
Supply System ◽  
Water Supply System ◽  
Total Energy Consumption

According to the Alliance to Save Energy, between 2 % and 3 % of the total electric energy consumed in the world is used for water pumping in supply systems, with the consumption reduction potential through energy efficiency and conservation measures being estimated at 25 %. In Brazil, the water supply sector corresponds to 2.6 % of the total energy consumed in the country, with pumping systems being responsible for over 90 % of the total energy consumption. It is extremely common to find supersized facilities with pump motor sets operating outside their ideal points, with it being a common practice to perform flow and pressure control through the installation of valves. The use of reducing valves inserts unnecessary pressure drops into the hydraulic system, increasing energy consumption. The objective of this work is to present an energy balance of a study sector of the Autonomous Water and Sewage Service (AWSS) of a municipality in the south of Minas Gerais, Brazil, aiming to elucidate the electric energy consumption of the system and where the reduction in such consumption may occur. For this, we measured data such as the efficiency of the pump motor sets, calculated performance indicators and water loss indices, and applied the energy balance adapted. This work presents an application of a water-energy balance with adaptations to a Brazilian water supply system, under the perspective of the energy efficiency in lift station pump motor sets.

scholarly journals AUDIT ENERGI PADA SEBUAH HOTEL

2012 ◽  
Vol 16 (3) ◽  
pp. 131
Author(s):  
Didik Ariwibowo
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Energy Savings ◽  
Electric Energy ◽  
Electrical Energy ◽  
Hot Water ◽  
Electrical Energy Consumption ◽  
Energy Audit ◽  
Electric Energy Consumption ◽  
Pumping System

Didik Ariwibowo, in this paper explain that energy audit activities conducted through several phases, namely: the initial audit, detailed audit, analysis of energy savings opportunities, and the proposed energy savings. Total energy consumed consists of electrical energy, fuel, and materials in this case is water. Electrical energy consumption data obtained from payment of electricity accounts for a year while consumption of fuel and water obtained from the payment of material procurement. From the calculation data, IKE hotels accounted for 420.867 kWh/m2.tahun, while the IKE standards for the hotel is 300 kWh/m2.tahun. Thus, IKE hotel included categorized wasteful in energy usage. The largest energy consumption on electric energy consumption. Largest electric energy consumption is on the air conditioning (AC-air conditioning) that is equal to 71.3%, and lighting and electrical equipment at 27.28%, and hot water supply system by 4.44%. Electrical energy consumption in AC looks very big. Ministry of Energy and Mineral Resources of the statutes, the profile of energy use by air conditioning at the hotel by 48.5%. With these considerations in the AC target for audit detail as the next phase of activity. The results of a detailed audit analysis to find an air conditioning system energy savings opportunities in pumping systems. Recommendations on these savings is the integration of automation on the pumping system and fan coil units (FCU). The principle of energy conservation in the pumping system is by installing variable speed drives (VSD) pump drive motor to adjust speed according to load on the FCU. Load variations FCU provide input on the VSD pumps to match. Adaptation is predicted pump can save electricity consumption up to 65.7%. Keywords: energy audit, IKE, AC

Effect of the tap water supply system on China's economy and energy consumption, and its emissions’ impact

2016 ◽  
Vol 64 ◽  
pp. 660-671 ◽  
Author(s):  
Xiaohong Zhang ◽  
Yan Qi ◽  
Yanqing Wang ◽  
Jun Wu ◽  
Lili Lin ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Tap Water ◽  
Supply System ◽  
Water Supply System ◽  
China’S Economy

scholarly journals Implementation of a Floating Head Pressure Condensation Control to Reduce Electrical Energy Consumption in an Industrial Refrigeration System

2021 ◽  
Vol 11 (24) ◽  
pp. 11923
Author(s):  
Fábio Luiz da Costa Carrir ◽  
Cesare Biserni ◽  
Danilo Barreto Aguiar ◽  
Elizaldo Domingues dos Santos ◽  
Ivoni Carlos Acunha Júnior
Keyword(s):  
Energy Consumption ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Electric Energy ◽  
Electrical Energy ◽  
Industrial Facilities ◽  
Improve Energy Efficiency ◽  
Electric Energy Consumption ◽  
Industrial Refrigeration

The growing global demand for energy and the costly taxes on electric energy demonstrate the importance of seeking new techniques to improve energy efficiency in industrial facilities. Refrigeration units demand a large amount of electricity due to the high power needs of the components of the system. One strategy to reduce the electric energy consumption in these facilities is pressure condensation control. The objective here was to develop a logical control model where the physical quantities in the thermodynamic process can be monitored and used to determine the optimum point of the condensation pressure and the mass flow rate of the air in the evaporative condenser. The algorithm developed was validated through experiments and was posteriorly implemented in an ammonia industrial system of refrigeration over a period of sixteen months (480 days). The results showed that the operation of the evaporative condenser with a controlled air mass flow rate by logical modeling achieved a reduction of 7.5% in the consumption of electric energy, leading to a significant reduction in the operational cost of the refrigeration plant.

USING FAN COIL UNITS TO REDUCE ELECTRIC ENERGY CONSUMPTION FOR THE FAN DRIVE

2021 ◽  
pp. 28-36
Author(s):  
Борис Петрович Новосельцев ◽  
Ирина Игоревна Шамилова
Keyword(s):  
Energy Consumption ◽  
Ventilation System ◽  
Electric Energy ◽  
Electrical Energy ◽  
Industrial Building ◽  
Electric Energy Consumption ◽  
Traditional Scheme ◽  
The Cost ◽  
Ventilation Systems

Объём потребления энергии, в том числе и электрической, в нашей стране непрерывно увеличивается. В связи с этим возникает необходимость максимального снижения затрат электрической энергии. В статье рассматривается возможность снижения электрической энергии в приточных системах вентиляции за счёт использования вентиляторов-доводчиков. Приведены результаты аэродинамического расчета двух вариантов приточной системы вентиляции промышленного здания. Первый вариант - традиционная схема с одним общим центральным вентилятором. Второй вариант - схема с использованием вентиляторов-доводчиков на отдельных ветвях системы. В результате проведенных расчетов показано, что установка вентиляторов-доводчиков позволит существенно снизить нагрузку на привод центрального вентилятора. The volume of energy consumption, including electricity, in our country is constantly increasing. In this regard, it becomes necessary to reduce the cost of electrical energy as much as possible. The article discusses the possibility of reducing electrical energy in supply ventilation systems through the use of fans. We present the results of the aerodynamic calculation of two variants of the supply ventilation system of an industrial building. The first option is the traditional scheme with one common central fan. The second option is a scheme using fan coil units on separate branches of the system. As a result of the calculations, it is shown that the installation of fan coil units will significantly reduce the load on the central fan drive.

Energy Embodiment of Water Supply: A Comparison between the US and China

2011 ◽  
Vol 356-360 ◽  
pp. 2175-2181
Author(s):  
Wei Wei Mo ◽  
Qiong Zhang ◽  
Rong Chang Wang
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Large Population ◽  
Supply System ◽  
Water Supply System ◽  
Embodied Energy ◽  
Water Supply Systems ◽  
System A ◽  
The Us ◽  
Supply Systems

Under the rapid growth of world’s economy and population, the demand for water and energy has been increasing accordingly. Moreover, water and energy are interrelated and form a reinforcing feedback loop. Energy is used not only onsite of water supply systems, but also indirectly for producing materials used in the water systems. As a result, it is important to understand and evaluate the energy embodiment of water supply for sustainable water and energy management. This study uses the Economic Input-Output Life Cycle Assessment software to estimate and compare the embodied energy of one China water supply system (System A) and one US water supply system (System B). It has been found that System B in the US has comparable direct operational energy consumption with System A in China; however, System B consumes much more indirect energy and constructional energy than System A. Possible reasons for the higher indirect energy use in System B might be more administrative and engineering (maintenance and repairing) services involved, lower transportation efficiency, more self water usage within the system and higher labor rates. To satisfy the water demand for the large population, China’s water supply systems have to reduce direct energy consumption during the operation phase by conducting energy budget and adopting energy efficient technologies.

scholarly journals ENERGY-SAVING ENVIRONMENTAL AUTOMATED WATER SUPPLY SYSTEM FOR A CONSTRUCTION ENTERPRISE

2017 ◽  
Vol 21 (6) ◽  
pp. 60-67
Author(s):  
N. S. Kobelev ◽  
V. N. Kobelev ◽  
W. I. Senzenkow ◽  
S. A. Poliwanowa ◽  
N. A. Satalova
Keyword(s):  
Water Supply ◽  
Energy Saving ◽  
Thermal Protection ◽  
High Energy ◽  
Supply System ◽  
Water Supply System ◽  
Energy Sources ◽  
Water Supply Systems ◽  
Industrial Enterprises ◽  
Supply Systems

The energy saving ecological water supply system is proposed. The system can be implemented both in heat power engineering, in particular in circulating water supply systems for industrial enterprises, and in construction industry where there are heat evolutions produced by equipment and due to technological processes. According to the forecasts of Russia's energy strategy, the production of thermal energy will increase by 22-34 % in 2020. At the same time, it is planned to increase the real heat consumption by 1.4-1.5 times due to reduction of losses in the conditions of high energy saving potential in all energy sectors beginning with production to transportation and rational use of energy sources. The system of housing and utilities is extremely energy intensive, since utility infrastructure is worn out up to 80-90 %. The practical lack of biosphere-compatible technologies for engineering systems design and operation in Russia does not allow providing resource-saving at all stages of full life cycle of a building or a structure. Known studies and proposals based on the research and development decisions of RAASN Research Institute of Building Physics mainly relate to the thermal protection of the shell of a building and are not represented by engineering interconnected systems. Therefore, the development and implementation of measures for the integrated development of utility infrastructure becomes topical. The solution of this problem is related to complex of engineering and technical activities, including thermal protection by increasing thermal resistance of enclosing structures of buildings, upgrading heat and water supply systems, using non-traditional energy sources.

scholarly journals Calculation of specific rates of the electric energy consumption at frequency regulation of electric drives: A case study of pumping stations

2021 ◽  
Vol 939 (1) ◽  
pp. 012001
Author(s):  
T Kamalov ◽  
A Isakov ◽  
A Shavazov ◽  
A Elmuratova ◽  
B Tukhtamishev
Keyword(s):  
Energy Consumption ◽  
Experimental Studies ◽  
Electric Energy ◽  
Electrical Energy ◽  
Design Parameters ◽  
Frequency Regulation ◽  
Electric Drives ◽  
Electric Energy Consumption ◽  
Pumping Stations ◽  
Pumping Units

Abstract The issues of developing a methodology for calculating the specific rates of electrical energy consumption during frequency regulation of electric drives of pumping stations are considered. When calculating specific consumption rates, experimental studies were carried out at the Chirchik pumping station. When developing the methodology, technological, design parameters, water consumption, as well as the total capacity of pumping units based on frequency-controlled electric drives are taken into account. At the same time, the characteristics of the main parameters that must be taken into account when choosing variable frequency drives for pumping units are determined.

The power efficiency of the Tajo-Segura transfer and desalination

2011 ◽  
Vol 63 (3) ◽  
pp. 536-541 ◽  
Author(s):  
J. Melgarejo ◽  
B. Montano
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Energy Cost ◽  
Power Efficiency ◽  
Supply System ◽  
Water Supply System ◽  
Time Of Operation ◽  
Density Of Water

The origin of the water supply system of Tajo-Segura, in 1932, goes back to when it was the unique possible solution to the shortage of hydric resources in the Confederación Hidrográfica del Segura (CHS). Its energy consumption is not homogeneous; it could be bigger or smaller, depending on the different water destination. The energy cost average of water of the Tajo-Segura water supply system is 1.21 kWh/m3. The energy consumption of desalination depends on the type of process used to desalinate the water, the time of operation and the capacity of the plant, and also on the density of water to treat. In any case, the energy consumption of the desalination ranges between 3.8 and 4.2 kWh/m3; obviously that is bigger than those obtained of the Tajo-Segura water supply system (1.21 kWh/m3).

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