scholarly journals Methods for Improvement of the Thermal Efficiency during Spray Drying

2018 ◽  
Vol 53 ◽  
pp. 01031 ◽  
Author(s):  
Fangyuan Cheng ◽  
Xueyong Zhou ◽  
Yanmei Liu
Keyword(s):  
Spray Drying ◽  
Thermal Efficiency ◽  
High Energy ◽  
Point Of View ◽  
Low Energy ◽  
Energy Utilization ◽  
Spray Dryer ◽  
Unit Operation ◽  
Factors Affecting ◽  
High Energy Consumption

Spray drying is a kind of unit operation with high energy consumption and relatively low energy utilization, and the problem of low thermal efficiency has been attracted the attention by scholars at home and abroad. The factors affecting the thermal efficiency of spray dryer are analyzed. From a technical point of view, the thermal efficiency of spray dryer can be increased through the unit operation. Measurements for the reduction of energy saving of spray dryer were put forward.

scholarly journals Use of Steel and Polyolefin Fibres in the La Canda Tunnels: Applying MIVES for Assessing Sustainability Evaluation

2018 ◽  
Author(s):  
Marcos G. Alberti ◽  
Jaime C. Gálvez ◽  
Alejandro Enfedaque ◽  
Ana Carmona ◽  
Cristina Valverde ◽  
...  
Keyword(s):  
Value Function ◽  
Raw Materials ◽  
High Energy ◽  
Point Of View ◽  
Concrete Slabs ◽  
Function Concept ◽  
Sustainability Evaluation ◽  
Value Model ◽  
The Value Function ◽  
High Energy Consumption

Construction involves the use of significant quantities of raw materials and entails high-energy consumption. For the sake of choosing the most appropriate solution that considers environmental and sustainable concepts, tools such as the integrated value model for sustainable assessment (Modelo Integrado de Valor para una Evaluación Sostenible, MIVES) used in Spain, plays a key role in obtaining the best solution. MIVES is a multi-criteria decision-making method based on the value function concept and the seminars delivered by experts. Such tools, in order to show how they may work, require application to case studies. In this paper, two concrete slabs manufactured with differing reinforcement during the construction of the La Canda Tunnels are compared by means of MIVES. The two concrete slabs were reinforced with a conventional steel-mesh and with polyolefin fibres. The results showed that from the point of view of sustainability, the use of polyolefin fibres provided a significant advantage mainly due to the lower maintenance required.

scholarly journals Research on the Defrosting System of Refrigerated Containers Combining Air and Electro-Thermal Energy and the Controlling Strategy

2021 ◽  
Vol 248 ◽  
pp. 02058
Author(s):  
Kaitai Hua
Keyword(s):  
Energy Consumption ◽  
Thermal Energy ◽  
Pressure Change ◽  
High Energy ◽  
Structural Features ◽  
Low Energy ◽  
Wind Pressure ◽  
Long Duration ◽  
Low Energy Consumption ◽  
High Energy Consumption

Considering the problems such as long duration of defrosting, low working reliability and high energy consumption of refrigerated containers, this paper put forward a new defrosting method combining air and electro-thermal energy, and designed a new defrosting structure system based on the structural features of refrigeration modules of refrigerated containers. The two-variable method of wind pressure change and temperature difference change on both sides of the evaporator was used to detect frosting, and the specific controlling strategy supporting the new defrosting system was provided to realize the effect of intelligent defrosting. It can provide references for fast defrosting, intelligent defrosting and low energy consumption defrosting of refrigerated containers.

scholarly journals Use of Steel and Polyolefin Fibres in the La Canda Tunnels: Applying MIVES for Assessing Sustainability Evaluation

2018 ◽  
Vol 10 (12) ◽  
pp. 4765 ◽  
Author(s):  
Marcos G. Alberti ◽  
Jaime C. Gálvez ◽  
Alejandro Enfedaque ◽  
Ana Carmona ◽  
Cristina Valverde ◽  
...  
Keyword(s):  
Value Function ◽  
Raw Materials ◽  
High Energy ◽  
Point Of View ◽  
Concrete Slabs ◽  
Function Concept ◽  
Sustainability Evaluation ◽  
Value Model ◽  
The Value Function ◽  
High Energy Consumption

Construction involves the use of significant quantities of raw materials and entails high-energy consumption. For the sake of choosing the most appropriate solution that considers environmental and sustainable concepts, tools such as the integrated value model for sustainable assessment (Modelo Integrado de Valor para una Evaluación Sostenible, MIVES) used in Spain, plays a key role in obtaining the best solution. MIVES is a multi-criteria decision-making method based on the value function concept and the seminars delivered by experts. Such tools, in order to show how they may work, require application to case studies. In this paper, two concrete slabs manufactured with differing reinforcements during the construction of the La Canda Tunnels are compared by means of MIVES. The two concrete slabs were reinforced with a conventional steel-mesh and with polyolefin fibres. This research was focussed on the main aspects affecting the construction. That is to say, the environmental, economic, and social factors were assessed by the method, being of special impact the issues related with maintenance of the structure. The results showed that from the point of view of sustainability, the use of polyolefin fibres provided a significant advantage, mainly due to the lower maintenance required.

LEACH-VD

2020 ◽  
pp. 77-85
Author(s):  
Proshikshya Mukherjee
Keyword(s):  
Vector Quantization ◽  
Shortest Path ◽  
Cluster Head ◽  
High Energy ◽  
Point Of View ◽  
Energy Utilization ◽  
Dijkstra Algorithm ◽  
Adaptive Clustering ◽  
Cluster Communication ◽  
Active Cluster

Wireless sensor networks act as an important role in the wireless communication area because of its properties, its intelligence, cheaper costs, and its smaller size. Multiple nodes are required for coperative communication, the low energy adaptive clustering hierarchy and LEACH-Vector Quantization are used for cluster and active cluster headformation. Further, Dijkstra Algorithm is used to find the shortest path between the active CHs and high-energy utilization, respectively. The main issue of inter-cluster communication is carried out in earlier work using LEACH and LEACH-V protocols. The chapter illustrates the LEACH-Vector Quantization Dijkstra protocol for shortest path active CH communication in a cooperative communication network. In the application point of view, LEACH-VD performs the lowest energy path. LEACH-V provides the intra-cluster communication between the cluster head, and using Dijkstra Algorithm, the minimum distance is calculated connecting the active cluster heads, which creates the shortest path results using an energy-efficient technique.

Research on the Development of Calcium Carbide Industry in Shaanxi Province under the Situation of Energy Conservation and Emissions Reduction

2014 ◽  
Vol 962-965 ◽  
pp. 1871-1874
Author(s):  
Lin Ma ◽  
Long Long Chen ◽  
Ke Ma
Keyword(s):  
Emission Reduction ◽  
Rapid Development ◽  
Calcium Carbide ◽  
High Energy ◽  
Low Energy ◽  
Shaanxi Province ◽  
Emissions Reduction ◽  
Benefit Analysis ◽  
Ecological Civilization ◽  
High Energy Consumption

The rapid development of calcium carbide industry in Shaanxi Province have made significant achievements in the size and yield, low energy efficiency and extensive management, problems still prominent, high energy consumption high emissions and construction of ecological civilization, apparently, does not adapt. Study from two aspects of technology and management of energy saving and emission reduction in the calcium carbide industry, countermeasures for realizing clean production and sustainable development, and the benefit analysis.

FACTORS AFFECTING THE PERSISTENCE OF STRANDED OIL ON LOW ENERGY COASTS

1985 ◽  
Vol 1985 (1) ◽  
pp. 359-365 ◽  
Author(s):  
Edward H. Owens
Keyword(s):  
Residence Time ◽  
Wave Energy ◽  
Energy Levels ◽  
Open Water ◽  
High Energy ◽  
Low Energy ◽  
Factors Affecting ◽  
Shoreline Changes ◽  
The North ◽  
Mechanical Dispersion

ABSTRACT Mechanical dispersion by waves is usually considered to be the primary factor that controls the persistence of spilled oil reaching the coast. This assumption is accurate for stable coasts that are not subject to net erosion or accretion and beaches where oil would not be buried by onshore, offshore, or alongshore movement of sediments. On high energy coasts, oil can be rapidly buried or eroded, depending on the stage of beach changes. Similarly, oil stranded on coasts subject to rapid net accretion or erosion is likely to be buried or dispersed. Rapid shoreline changes can occur in areas of low wave energy, so wave energy levels cannot be used alone as an indicator of oil persistence. Sections of the North American Beaufort Sea coast are undergoing net long term changes on the order of 10 meters per year, despite the short (3 month) open water season and the small fetch areas. Beach migration or cliff retreat on these low energy coasts often has a net rate on the order of one meter per month. In these situations, the changes in shoreline location due to sediment erosion and transport reflect the integrated effect of coastal processes and the materials on which the processes act. Rates of shoreline changes can be used as an indicator to estimate the residence time of stranded oil, irrespective of the shoreline character or the wave energy levels at the shoreline. Wave energy levels alone are an inadequate basis for estimating the residence time of stranded oil.

Digimesh-Based Design of a Wireless Monitoring Network for Environmental Factors Affecting Granary System

2020 ◽  
Vol 48 ◽  
pp. 126-132
Author(s):  
Moses Oluwafemi Onibonoje ◽  
Jeremiah Oluwatosin Baandele
Keyword(s):  
Single Point ◽  
Monitoring Network ◽  
High Energy ◽  
High Rate ◽  
Factors Affecting ◽  
Wireless Monitoring ◽  
Wired Networks ◽  
Arduino Microcontroller ◽  
Acquisition Delay ◽  
High Energy Consumption

The monitoring of granaries were earlier implemented with wired networks in most Asia countries with obvious challenges that include high installation and maintenance costs, data acquisition delay, and high energy consumption. Most other works being implemented with wireless approaches presented inherent drawbacks that include inefficient coverage of the grain storage bins and high rate of node failure. This paper presents the design and tremendous advantages of deploying distributed wireless sensor network based on Digimesh network protocol, to monitor the environmental temperature, humidity and illumination of a granary system. The monitoring system has only one node type, and consists of a homogenous network in which all nodes route data and they are interchangeable. A node consists of Xbee transceiver modules, Arduino microcontroller and DHT22 Temperature/Humidity sensor, and it is being configured as low battery powered devices. The results were logged real-time on a personal computer for analysis, display and record. The results indicate a system which provides a better sleeping scheme and eliminate the single point of failure associated with Zigbee and some other network protocols.

Research of Potential Energy Recycling System on Port Tyre Cranes

2013 ◽  
Vol 712-715 ◽  
pp. 1363-1367 ◽  
Author(s):  
Jing Tang ◽  
Yong Hu ◽  
Li Juan Su ◽  
Ling Hua Hu ◽  
Ji Quan Hu
Keyword(s):  
Potential Energy ◽  
Energy Saving ◽  
Complex Structure ◽  
High Energy ◽  
Energy Utilization ◽  
Recycling System ◽  
Latent Energy ◽  
Saving Effect ◽  
New Applications ◽  
High Energy Consumption

Port tyre cranes have the drawbacks of high energy consumption and serious pollution, whose potential is the most important latent energy being wasted. Some attempts to recycle the potential of tyre crane have attained certain energy-saving result, but their stability and reliability need to be verified. Based on the specific conditions of port tyre cranes with complex structure, a novel potential energy recycling system was proposed, with new applications such as a coaxial motor with dual armatures and variable torque and the nonlinear weighted coding dynamic magnetic technology. The results show that this system has characteristics of high energy utilization, excellent energy-saving effect and stability.

Study on Energy Saving of Hybrid Hydraulic Excavator

2013 ◽  
Vol 312 ◽  
pp. 158-162
Author(s):  
Wen Hai Wu ◽  
Jian Ke ◽  
Huan Long Liu ◽  
Yu Lan Yang ◽  
Hui Zheng
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Control Function ◽  
High Energy ◽  
Energy Utilization ◽  
Hydraulic Excavator ◽  
Theoretical Simulation ◽  
Traditional System ◽  
Traditional Structure ◽  
High Energy Consumption

For the high energy consumption and poor emission of a medium-sized hydraulic excavator, energy consumption point is analyzed combined with the advantages of the electric hybrid system. The energy recovery schematic of the system is designed. Mathematical models of the slewing system are established and theoretical simulation is conducted, and it is compared with the traditional structure. The velocity, displacement, and energy consumption curves of the two systems are concluded under the same conditions. The comparison shows that: energy saving of the electric hybrid slewing system is 37.27% compared with the traditional system. And the electric hybrid slewing system has the characteristics of the better control function and the higher energy utilization.

scholarly journals Physical factors affecting the reliability of rail crane operators

Dependability ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 36-39
Author(s):  
T. A. Finochenko ◽  
I. G. Pereverzev ◽  
M. V. Balanova
Keyword(s):  
Experimental Studies ◽  
Clinical Signs ◽  
Physical Nature ◽  
High Energy ◽  
Point Of View ◽  
Physical Factors ◽  
Noise And Vibration ◽  
Factors Affecting ◽  
Industrial Noise ◽  
Experimental Findings

As it is known, load-lifting rail cranes of various models employed as part of Russian Railways repair and recovery trains are high-risk facilities. They normally have large dimensions and powerful engines that generate significant thrust and high energy. The paper examines the effects of harmful occupational factors of physical nature, i.e. industrial noise and vibration on the performance and health of rail crane operators. Aim. Based on the analysis of the causes of incidents that occurred in the course of operation of rail cranes, generalizing the experimental findings regarding the effects of industrial noise and vibration on crane operators and identifying the correlation between the clinical signs of distress in this category of workers and the levels of the above harmful physical industrial factors. Methods. Experimental studies and the subsequent evaluation of the effect of industrial noise and vibration generated by the mechanisms of cranes were conducted with the use of an Assistant Total+ noise and vibration analyzer in the course of operation of rail cranes of various models when handling cargo, as well as when crane engines idle. Measurements were conducted at workstations where the operator is to be at during the operation and maintenance of the crane, i.e. the control cabins, operator seat, control handles, near the crane engine. Results. The paper provides a classification of sources of noise and vibration that affect crane operators, experimental findings regarding the levels of industrial noise, general and local industrial vibration for various models of cranes. Clinical signs of distress are identified, a list is set forth of the most typical occupational health problems for this category of workers. Conclusions. The paper concludes that the reduction of industrial noise and vibration caused by the mechanisms of rail cranes is a relevant engineering and socioeconomic problem. From the socioeconomic point of view the solution to this problem will allow improving the working conditions of crane operators, while in terms of engineering it will enable higher technical and operational characteristics of crane mechanisms.

Sign in / Sign up

Export Citation Format

Share Document