scholarly journals Energy Consumption Reduction of a Chiller Plant by Adding Evaporative Pads to Decrease Condensation Temperature

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2218
Author(s):  
Francisco J. Rey Martínez ◽  
Julio F. San José Alonso ◽  
Eloy Velasco Gómez ◽  
Ana Tejero González ◽  
Paula M Esquivias ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
High Energy ◽  
Condensation Temperature ◽  
Efficiency Ratio ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
Load Characteristics ◽  
Installed Capacity

The high energy consumption of cooling systems justifies the need for strategies to increase the efficiency of the facilities, in order to reduce the related CO2 emissions. This study aims to improve the performance and reduce the energy consumption of an 8.6 MW air cooled chiller. This installed capacity is biased due to the screw compressors, of 2.98 Energy Efficiency Ratio (EER) at full load (characteristics provided by the manufacturer). The chiller unit has been modified by placing evaporating cooling pads before the condensing coils. The chiller has been monitored for three months, recording over 544,322 measurements (5 min-step data), with and without the evaporative cooling pads, to assess the performance. Data comparison has been done by selecting two days (with and without evaporative panels) with the same health care load and temperatures. Implementing the proposed strategy yields an improvement in the European Seasonal Energy Efficiency Ratio (ESEER) from 3.69 to 4.83, while the Total Equivalent Warming Impact (TEWI) decreases about 1000 tCO2. Energy savings of up to 32.6 MWh result into a payback period lower than 2 years.

Potassium promoted core–shell-structured FeK@SiO2-GC catalysts used for Fischer–Tropsch synthesis to olefins without further reduction

2020 ◽  
Vol 44 (1) ◽  
pp. 87-94
Author(s):  
Zhijiang Ni ◽  
Xuefei Zhang ◽  
Jirong Bai ◽  
Zhilei Wang ◽  
Xi Li ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Sol Gel ◽  
Reduction Process ◽  
High Energy ◽  
Core Shell ◽  
Fischer Tropsch ◽  
Gel Method ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
High Energy Consumption

The GC and K promoted Fe-based catalysts prepared by modified sol–gel method, which omits the complex and high energy consumption reduction process, can be used directly for highly efficient FTS and thus will be more promising in the future.

scholarly journals Benchmarking, Standard Setting and Energy Conservation of Olefin Plants in Iran

2021 ◽  
Vol 15 ◽  
pp. 7-14
Author(s):  
S. Gowharifar ◽  
B. Sepehrian ◽  
G. Nasiri ◽  
A. Khoshgard ◽  
M. Momenifar
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Cost Reduction ◽  
Process Integration ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
The World ◽  
Petrochemical Company

Olefin plants are one of the most energy intensive petrochemical plants in the world [1, 2]. In Iran more than 15% of petrochemical products are olefins and it will increase rapidly during next future, so improvement of energy efficiency in olefin plants is key element in NPC (Iranian National Petrochemical Company) plan for cost reduction and sustainable development. In this paper the energy consumption of existing olefin plants are compared with design condition and also world best technology. This comparison indicates the meaningful gap between operational and best condition. In this study the opportunities of energy saving in olefin plants are investigated using process integration tools and benchmarking. The result of this study indicates there is potential for energy consumption reduction up to 25% in Iranian olefin plants.

scholarly journals Increasing Energy Efficiency in Water Collection Systems by Submersible PMSM Well Pumps

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1310 ◽  
Author(s):  
Marcus Beck ◽  
Alexander Sperlich ◽  
Ricardo Blank ◽  
Eckehard Meyer ◽  
Ralf Binz ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
High Energy ◽  
Pump Efficiency ◽  
Groundwater Abstraction ◽  
Additional Increase ◽  
Global Efficiency ◽  
Water Collection ◽  
The Impact

Water collection based on groundwater abstraction has a high energy consumption that depends primarily on the operation and performance of submersible well pumps. The fact of the matter is that these machines still work with a global energy efficiency of less than 50%, and further investigations of the energy aspects in well pumps are needed. The present study introduces measures to increase the global efficiency of submersible well pumps linked to electrical energy savings. Common submersible pumps with asynchronous motors (ASMs) were compared with innovative permanent magnet synchronous motor (PMSM) technology in real well fields in Berlin and Hamburg waterworks. This study confirms that PMSM pumps showed a 6.8%-points higher global efficiency compared to ASM pumps at optimal working points. The investigation of the impact of well field operation on local pump efficiency offers an additional increase in the global efficiency. In this context, the influence of variable speed control on the global efficiency and the energy consumption was analyzed. Global efficiencies of over 70%, and potential energy savings of up to 20%, were determined for the speed-controlled PMSM pump. This offers water suppliers new incentives to optimize their water collection systems for less energy consumption.

scholarly journals Increasing Energy Efficiency and Productivity of the Comminution Process in Tumbling Mills by Indirect Measurements of Internal Dynamics—An Overview

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6735
Author(s):  
Mateusz Góralczyk ◽  
Pavlo Krot ◽  
Radosław Zimroz ◽  
Szymon Ogonowski
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Optimal Size ◽  
Internal Dynamics ◽  
Industrial Sectors ◽  
Energy Consumption Reduction ◽  
Comminution Process ◽  
Consumption Reduction ◽  
Tumbling Mills ◽  
And Control

Tumbling mills have been widely implemented in many industrial sectors for the grinding of bulk materials. They have been used for decades in the production of fines and in the final stages of ore comminution, where optimal levels for the enrichment particles’ sizes are obtained. Even though these ubiquitous machines of relatively simple construction have been subjected to extensive studies, the industry still struggles with very low energy efficiency of the comminution process. Moreover, obtaining an optimal size for the grinding product particles is crucial for the effectiveness of the following processes and waste production reduction. New, innovative processing methods and machines are being developed to tackle the problem; however, tumbling mills are still most commonly used in all ranges of the industry. Since heavy equipment retrofitting is the most costly approach, process optimization with dedicated models and control systems is the most preferable solution for energy consumption reduction. While the classic technological measurements in mineral processing are well adopted by the industry, nowadays research focuses on new methods of the mill’s internal dynamics analysis and control. This paper presents a retrospective overview of the existing models of internal load motion, an overview of the innovations in process control, and some recent research and industrial approaches from the energy consumption reduction point of view.

scholarly journals Auditing and managing energy consumption in pool of imam Khomeini University of naval forces

2015 ◽  
Vol 16 (SE) ◽  
pp. 89-95
Author(s):  
Rasool Karimi
Keyword(s):  
Energy Consumption ◽  
High Energy ◽  
Surface Evaporation ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
Return On Capital ◽  
Cold Energy ◽  
Reduce Energy Consumption ◽  
Almost All ◽  
High Energy Consumption

In recent years, because of various reasons of auditing and calculating necessity for the rate of energy consumption and its savings have been as certain necessity. Among this, construction section has allocated more than one third of country’s energy consumption to itself that its value has been determined more than 6 billion dollars annually according to world prices. Now considering less attention to energy, almost all country’s buildings don’t have technical regulations for preventing wasting heat or cold energy and considering that swimming pools are building with high energy consumption and energy is used there mediating various factors, this research is sought to investigate the situation of energy consumption in pool of Imam Khomeini University Of Naval Forces. The most important energy consumer factors are sidewall thermal losses with surface evaporation of pool's water and air conditioning that finally mentioned performable solutions in pool will be investigated in terms of achieving energy consumption reduction. It is tried in this study to compare performed auditing with defined standards in nineteenth discussion of national regulations and by economic evaluating and the method of calculating return on capital of each action, the priority of doing performable actions in order to reduce energy consumption is determined and compared using existing software of modeling.

Study on Energy-Consumption Management and Energy-Saving Analysis System for the Large Public Building Based on WebAccess

2011 ◽  
Vol 374-377 ◽  
pp. 141-145
Author(s):  
Xiao Lin Lu ◽  
Lei Wang
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Energy Saving ◽  
High Energy ◽  
Public Building ◽  
Remote Transmission ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
The Status ◽  
Analysis System

Aim at the current situation of high energy-consumption of the large public building，proposed a WebAccess–based energy-consumption management and energy-saving analysis system.And it be used Zigbee distributed energy consumption measurement net for data remote transmission. The status of energy consumption in the future can be predicted through energy-consumption databases and energy-consumption models were built. The system can real time monitor and manage the energy-consumption status in large public constructions. It can provide a favorable foundation not only for energy conservation and reformation of those completed large public building, but also for energy conserved operation and supervision of those new constructions. This can help to achieve the goal of energy conservation and energy-consumption reduction in large public building.

scholarly journals An Efficient Signal Processing Model for Malicious Signal Identification and Energy Consumption Reduction for Improving Data Transmission Rate

2021 ◽  
Vol 38 (3) ◽  
pp. 837-843
Author(s):  
Yaswanth Kumar Alapati ◽  
Suban Ravichandran
Keyword(s):  
Energy Consumption ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Transmission Rate ◽  
High Energy ◽  
Signal Identification ◽  
Data Loss ◽  
Traditional Methods ◽  
Energy Consumption Reduction ◽  
Consumption Reduction

One of the fields which needs the most security is Ad hoc Network (ANET). The term ANET guarantees that there is no central authority so as to administer the signals. Security is a basic issue while using ANET for establishing communication. A ANET is an assortment of remote signals that can progressively be set up at anyplace and whenever without utilizing any prior system framework. Because of its volatile nature, it has mobility issues to improve the arrangement of the system. One of the difficulties is to recognize the malicious signals in the system. Because of malicious signals, data loss or high energy consumption will occur which reduce the overall performance of the ANET. There are a few circumstances when at least one signal in the system become malevolent and will destroy the limit of the system. The point of this work is to recognize the malignant signals quickly to avoid loss of data. The conventional strategy for firewall and encryption isn't adequate to secure the system. In this way a malicious signal identification framework must be added to the ad hoc network. A signal needs to be secured when utilizing the resources and to provide secure communication. The ad hoc networks have several issues like, congestion, overload, data loss and energy consumption. In the proposed work a framework for Rapid Malicious Signal Detection with Energy Consumption Reduction (RMSDwECR) Method is proposed. The proposed method is compared with the traditional methods in terms of load in the network, data loss ratio, signal transmission rate, energy consumption levels, malicious signal identification time and throughput levels. The proposed method exhibits better performance than the traditional methods.

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