scholarly journals Indirect Drying and Coking Characteristics of Coking Coal with Soda Residue Additive

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 575
Author(s):  
Ze Zhang ◽  
Shuting Zhang
Keyword(s):  
Energy Saving ◽  
Drying Characteristics ◽  
Coking Coal ◽  
Internal Solution ◽  
Active Point ◽  
System A ◽  
Dry Distillation ◽  
Drying Rates ◽  
Process Energy ◽  
Drying Efficiency

To improve indirect drying efficiency, the effect of soda residue on the drying characteristics of coking coal were studied using a self-made indirect drying system. A tube furnace was used in the dry distillation of coal samples with soda residue, and the coke properties were analyzed. The results indicated that the soda residue has a significant influence on the increase in the heating rate of coal samples in the temperature distribution range of 90 to 110 °C. With the addition of 2%, 5%, and 10% soda residue, the drying rates increased by 11.5%, 25.3%, and 37.3%, respectively at 110 °C. The results of dry distillation show that addition of 2%, 5% and 10% soda residue decreases the carbon loss quantity by 4.67, 4.99, and 8.82 g, respectively. The mechanical strength of coke samples satisfies the industrial conditions when the soda residue ratio ranges from 2% to 5%. Soda residue can improve the active point of coke dissolution reaction and inhibit coke internal solution. Economically, coking coal samples mixed with soda residue have an obvious energy saving advantage in the drying process. Energy saving analysis found that it can reduce cost input by 20% than that of the normal drying method.

scholarly journals Road Safety and Energy Saving Proposed System: A Zigbee WSN Approach

2015 ◽  
Vol 11 (2) ◽  
pp. 55 ◽  
Author(s):  
Tareq Ali Alhmiedat ◽  
Firas Omar ◽  
Anas Abu Taleb ◽  
Ahmad Alsswey
Keyword(s):  
Energy Saving ◽  
Road Safety ◽  
System A

Drying Characteristics of Graininess Agar under Infrared Ray and its Kinetics Model

2013 ◽  
Vol 663 ◽  
pp. 291-296
Author(s):  
Lei Yang ◽  
Qian Qian Ouyang ◽  
Si Dong Li
Keyword(s):  
High Efficiency ◽  
Linear Regression Analysis ◽  
Drying Rate ◽  
Analysis Program ◽  
Drying Method ◽  
Drying Characteristics ◽  
Low Energy Consumption ◽  
Different Temperatures ◽  
Drying Models ◽  
Drying Rates

In order to look for a low-energy–consumption and high-efficiency drying method, the drying characteristics of agar under infrared ray were studied. The results show that temperature has more obvious influence than granularity on the drying rate of agar. With the increase of temperature, the drying rate increases. The agar granularity does not have a significant influence on the drying rate. Comparisons of different drying models at different temperatures were made through linear regression analysis program. The results show that the drying procedure of agar under infrared ray can accurately be described by the Page model, and the drying rates and moisture contents at different drying stages can also be easily estimated with it.

scholarly journals The Optimization of Building Energy Consumption in Universitas Negeri Padang Using Building Energy Simulation Program

Teknomekanik ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 30-35
Author(s):  
Andre Kurniawan ◽  
Nanang Qosim ◽  
Remon Lapisa ◽  
Zainal Abadi ◽  
Jasman Jasman
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Use ◽  
Green Building ◽  
Energy System ◽  
Building Energy ◽  
Building Energy Consumption ◽  
Energy Audit ◽  
System A ◽  
Better Than

Energy consumption of a building is one of the biggest sources of energy use today. Green Building Comitte Indonesia (GBCI) has launched a concept of energy consumption saving in a nationally standard building. Audit Building energy audit is the way to know how actual building energy consumption is and find alternative solution to decrease energy consumption in order to fulfill the energy saving building criteria. Two types of HVAC systems will be run in the EnergyPlus simulation, split AC and central AC. The previous research proved that central AC is better than split AC system for energy saving in the building with 20 floors. The simulation results show that by using a certain energy system, a more efficient energy system will be achieved and can still maintain the comfort of the room at a temperature of 24 °C and relative humidity according to the Green Building Indonesia standard reference.

scholarly journals Drying of moist food snacks with innovative slot jet reattachment nozzle

2018 ◽  
Author(s):  
Milad Farzad ◽  
Mengqiao Yang ◽  
Jamal Seyed Yagoobi ◽  
B. Tilley
Keyword(s):  
Porous Media ◽  
Impinging Jet ◽  
High Flow ◽  
Paper Pulp ◽  
Drying Process ◽  
Drying Characteristics ◽  
Mass Flowrate ◽  
Jet Nozzle ◽  
Nozzle Slot ◽  
Drying Rates

Drying of moist porous media such as paper, pulp and food products is one of the most energy intensive processes in industry. Impinging jet nozzles are commonly used in various drying processes. There have been many efforts to improve the transport characteristics of impinging jet nozzles. Utilizing innovative Slot Jet Reattachment (SJR) nozzle is an approach to make the drying process more efficient. This is mainly because these nozzles overcome the high flow rate constraint associated with the traditional Slot Jet (SJ) nozzle. In this paper, the drying characteristics of the SJR nozzle with exit angles of +20˚ and +45˚ are experimentally investigated. The samples used are snack cookies. The results are compared with those of SJ nozzle under the same mass flowrate. The results indicate that significant enhancements in drying rates are achievable with both SJR nozzles compared to SJ nozzle.Keywords: Drying; Porous Food Snack; Slot Jet Reattachment Nozzle; Slot Jet Nozzle  

scholarly journals Design and Performance Evaluation of a Mixed-Mode Solar Crop Dryer

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Shitu Abubakar ◽  
Samaila Umaru ◽  
Fatai O Anafi ◽  
Aminu S Abubakar
Keyword(s):  
Performance Evaluation ◽  
Mixed Mode ◽  
Meteorological Conditions ◽  
Drying Rate ◽  
Coordinate Position ◽  
Collector Efficiency ◽  
Drying Rates ◽  
And Performance ◽  
Drying Efficiency ◽  
Drying Chamber

This study is concerned with development and performance evaluation of a mixed-mode solar  yam dryer. It was done to address the problems of uneven drying of product on different trays coordinate position in a typical indirect multiple trays dryer. Solar energy drying system was designed using the meteorological conditions of Zaria, Nigeria to dry yam slices in the mixed-mode natural convection. The dryer was designed to dry (7 kg) of yam slices. The dimensions of the dryer were: collector length, collector area, height of the drying chamber, chimney height, length of the drying chamber, and Width of the drying chamber were 0.65 m, 0.27 m2, 0.9 m, 0.7 m, 0.5 m, and 0.43 m, respectively. The solar yam dryer was exposed to solar radiation from 10:00 am to 06:00 pm and tested without load and with yam chips of 5 mm average thickness. Meteorological conditions were monitored during the dehydration process. The average drying rate, collector efficiency and drying efficiency were 2.55 kg/s, 42.20% and 25.35%, respectively. The results of performance evaluation of the solar dryer showed that the drying rate decreases by 3% and 8% in the second and third trays relative to the first tray. This shows that the drying rates did not vary significantly with the coordinate positions of the trays.

Development of Portable Energy-Saving Type Air Supply System – 1st Report: Effect of Variable Volume Tank –

2012 ◽  
Vol 24 (3) ◽  
pp. 464-471 ◽  
Author(s):  
Tatsuyuki Iwawaki ◽  
◽  
Daisuke Sasaki ◽  
Toshiro Noritsugu ◽  
Masahiro Takaiwa
Keyword(s):  
Energy Saving ◽  
Elastic Energy ◽  
Supply System ◽  
Pneumatic Actuator ◽  
Variable Volume ◽  
Flexible Materials ◽  
Supply Pressure ◽  
System A ◽  
Air Supply ◽  
Discharge Pressure

The purpose of this study is to develop a portable energy-saving type air supply system. A variable volume tank is developed in order to drive a pneumatic actuator with a low discharge pressure in a tank. The developed tank composed of flexible materials can store pneumatic energy by converting it to elastic energy. In this paper, the composition of the system, the structure and characteristic of a variable volume tank and experiment of driving actuator with constant and variable volume tanks are discussed. As a result, the variable volume tank can drive the actuator at a lower supply pressure than with the constant volume tank.

Experimental Study on the Xilingol Lignite Dewatering in Microwave Field

2013 ◽  
Vol 868 ◽  
pp. 442-446
Author(s):  
Wei Dong Wang ◽  
Xiao Yang ◽  
Jing Wen ◽  
Meng Hui Lu ◽  
Chen Gao ◽  
...  
Keyword(s):  
Microwave Field ◽  
Size Composition ◽  
Microwave Drying ◽  
Drying Rate ◽  
Drying Characteristics ◽  
Fine Coal ◽  
Mass Losses ◽  
Drying Rates ◽  
Drying Curves ◽  
Superficial Area

Microwave drying characteristics of Xilingol lignite were investigated with microwave drying testing equipment at 2450 MHz. Effects of particle size has been carefully studied. Mass losses of the samples were measured during drying. Drying rates were then obtained through the trends of drying curves. Results show the 0.6-1mm sample has low drying rate. Changing the stacking superficial area and size composition has been tested and resulted that only mixed with fine coal can increase the drying rate of 0.6-1mm. But classification experiment shows sieving 0-6mm sample into fine sample and coarse sample cannot advance the drying rate obviously.

scholarly journals Treatment and Reuse of Black Water by Novel Energy-saving Shaft/Anaerobic /Anoxic/ Aerobic (S/A/A/O) System: A Novel Energy-saving Shaft/Anaerobic /Anoxic/ Aerobic (S/A/A/O) System for black water

2019 ◽  
Vol 117 ◽  
pp. 00009
Author(s):  
Shaohong You ◽  
Qingjun Zhang ◽  
Lili Ma ◽  
Mingze Xu ◽  
Hua Lin
Keyword(s):  
Energy Saving ◽  
Low Carbon ◽  
Nitrogen And Phosphorus ◽  
Black Water ◽  
System A ◽  
Nutrient Removal Efficiency ◽  
Process System ◽  
Carbon Nitrogen Ratio ◽  
Aeration Process ◽  
Biological Nitrogen

In this study the novel integrated anaerobic/anoxic/aerobic (A/A/O) and shaft aeration process system which could enhance the nutrient removal efficiency of wastewater with a low carbon nitrogen ratio (C/N) was investigated. Several dissolved oxygen (DO) ratios (1.0-2.0, 2.0-3.0, 3.0-4.0 mg/L) were applied in order to obtain more knowledge on the biological nitrogen and phosphorus removal performances. The experiment was carried out on a lab-scale Shaft-Anaerobic-Anoxic-Aerobic (S/A/A/O) wastewater treatment system. The average removal efficiencies of the total organic carbon, total nitrogen and phosphorus were 84.0%, 82.0% and 93.7%, respectively. The result showed that the proposed system was promising for the treatment of wastewater with a low C/N ratio because that in this system nitrification and denitrification happened simultaneously. Besides, the system had an automatic return system and its floor area was small, which made it energy-saving.

Experimental Research on Deep-Bed Drying Characteristics of Maize

2011 ◽  
Vol 308-310 ◽  
pp. 1586-1589
Author(s):  
Xing Zao Ma ◽  
Chang You Li ◽  
Li Li Zhang ◽  
Wen Hao Shen
Keyword(s):  
Optimal Design ◽  
Moisture Content ◽  
Experimental Research ◽  
Initial Moisture Content ◽  
Drying Rate ◽  
Drying Characteristics ◽  
Air Temperatures ◽  
Drying Efficiency

In this paper, the deep-bed drying rate was analyzed under different bed depths and air temperatures. It was found that the bed depth had a greater impact on the drying efficiency, and if the initial moisture content of maize and the ventilation temperature are higher, the effect would be much more notable. The results will provide a basis for optimal design of the deep-bed drying devices.

scholarly journals Analysis of Energy Consumption for Biomass Drying Process

2015 ◽  
Vol 2 ◽  
pp. 317 ◽  
Author(s):  
Edgars Vigants ◽  
Girts Vigants ◽  
Ivars Veidenbergs ◽  
Dace Lauka ◽  
Krista Klavina ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Moisture Content ◽  
Energy Saving ◽  
Electricity Consumption ◽  
Heat Consumption ◽  
Drying Process ◽  
Process Energy

<p class="R-AbstractKeywords"><em><span lang="EN-US">This study is dedicated to the analysis of the drying process energy consumption. In order to evaluate the main energetic processes that consume the most energy, the energy consumption of each individual drying process with and without air recirculation was modelled. The model shows that drying agent (air) recirculation is not an energy-saving operation, since it increases the total electricity and heat consumption. Recirculation of the drying agent increases the moisture content of the drying agent at the dryer entrance, which increases the need for fresh air in the dryer so that it can absorb the evaporating moisture from the dried material. An increased flow of the drying agent in the dryer increases the heat and electricity consumption.</span></em></p>

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