Preheater for Anthracite Carbonization in Rotary Furnaces

2015 ◽  
Vol 789-790 ◽  
pp. 165-169
Author(s):  
Ján Spišák ◽  
Branislav Vaňko ◽  
Ján Kerekanič ◽  
Daniela Čuchtová
Keyword(s):  
Thin Layer ◽  
Specific Heat ◽  
Coke Production ◽  
Heat Consumption ◽  
Cooling Device ◽  
Volatile Substances

Coke production is carried out by coal carbonization. The most frequently used coal is anthracite, which features a very low content of volatile substances that not exceed 7%. Current anthracite production is carried out in rotary furnaces, consists of processes as follows: drying, heating, pyrolysis and calcination. Coke cooling is performed in cooling device located at the end of the furnace. To enhance the performance and reduce the specific heat consumption, use of the preheating device for rotary charge was proposed. The charge granulometry allows using the preheating device based on thin layer principle. Proposed solution was verified by simulations.

Research on the Dynamic Model and the Characteristics of Brown Rice Humidifier Ventilation Countercurrent Moisture Conditioning

2013 ◽  
Vol 373-375 ◽  
pp. 2156-2160
Author(s):  
Song Hua Yang ◽  
Yan Zhong Men
Keyword(s):  
Surface Roughness ◽  
Energy Consumption ◽  
Wind Speed ◽  
Moisture Content ◽  
Thin Layer ◽  
Air Temperature ◽  
Brown Rice ◽  
Simulation Method ◽  
Heat Consumption ◽  
Dynamics Model

The safety storage of rice or brown rice moisture content is below 14% ,hardness and brittleness is larger to low moisture content of brown rice, the crack in the manufacturing process of milling rice and broken rice rate is higher, milling processing energy consumption to increase, and the rice surface roughness is low .In this paper, using mathematical simulation method based on the theory of the humidifying, thin layer of humidifying dynamics model is established, and brown rice humidification conditioning properties are studied. Results show that the unit heat consumption is reduced with the increase of air temperature,humidifying rate increases, the bread machine temperature linearly increases; With the increase of wind speed, unit heat consumption increases, humidifying rate increased.

Experimental Study on Combustion Characteristics of LPG and Gasoline

2013 ◽  
Vol 448-453 ◽  
pp. 3350-3353
Author(s):  
Jian Wang ◽  
Yu Wei Chen ◽  
Jian Sun ◽  
Sheng Ji Liu
Keyword(s):  
Specific Heat ◽  
Peak Pressure ◽  
Power Reduction ◽  
Delay Period ◽  
Combustion Characteristics ◽  
Heat Consumption ◽  
Liquefied Petroleum Gas ◽  
Si Engine ◽  
Excess Air ◽  
Combustion Speed

Experiments were separately carried out on Liquefied Petroleum Gas (LPG) and gasoline as fuel for a spark ignition (SI) engine. According to the indicator diagram and the calculation of corresponding heat release, combustion characteristics of the two fuels were analyzed. The results showed that using LPG would lead to 7.64% power reduction and a little peak pressure reduction when the structures and ignition advance angle of the engine were remained. At rated speed and full load, the power of engine fueled with gasoline reaches the maximum when the excess air ratio is 0.90 and 0.76 fueled with LPG; when comparing the maximum power and specific heat consumption at different excess air ratios, we can see that the change of excess air ratio has a greater effect on the engine fueled with gasoline than that fueled with LPG; the specific heat consumption of both fuels decrease with the increase of load. Besides, under the same Фa, LPG has a shorter combustion delay period, faster combustion speed and shorter combustion period than gasoline.

The most Significant Factor Affecting the Calculation of Specific Heat Consumption for Heating for Family Houses According to STN 73 0540

2016 ◽  
Vol 820 ◽  
pp. 171-176 ◽  
Author(s):  
Peter Buday
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Specific Heat ◽  
Energy Performance ◽  
Environmental Engineering ◽  
Heat Consumption ◽  
Entire System ◽  
Significant Aspect ◽  
Heating Medium ◽  
The Way

According to requirements of STN 73 0540-2, 2012 is defined the requirement to meet energy criteria using the specific heat consumption for heating as well as normalized value of specific heat consumption for heating with expectation of achieving of energy efficiency in buildings. These requirements are followed by springboard to legislative evaluation of buildings in terms of energy performance of building (promulgation 364/2012 Z.z.) – using of energy certificate.Although very significant aspect in this process is the way to implement complex environmental engineering, efficiency of the entire system, the heating medium, renewable energy, energy efficiency is the basis on specific heat consumption for heating. Paper is dealing with assessment of this parameter.

scholarly journals Energy evaluation of steam-water cycle operation with mathematical modelling application

2011 ◽  
Vol 32 (4) ◽  
pp. 101-107 ◽  
Author(s):  
Henryk Rusinowski ◽  
Grzegorz Szapajko
Keyword(s):  
Mathematical Model ◽  
Energy Consumption ◽  
Mathematical Modelling ◽  
Specific Heat ◽  
Water Cycle ◽  
Specific Energy Consumption ◽  
Heat Consumption ◽  
Operating Parameters ◽  
Energy Evaluation ◽  
Modelling Application

Energy evaluation of steam-water cycle operation with mathematical modelling application In recent years, we can observe the development of the thermal diagnosis and operating control systems based on measuring techniques and mathematical modelling of processes improvement. Evaluation of the actual operating state is insufficient to make an optimal operating decisions. Thus, information about the influence of the operating parameters' deviations from the reference state on indicators describing energy consumption of the process (for example specific heat consumption or specific energy consumption) is also necessary. The paper presents methods for generation the information about the influence of the steam-water cycle operating parameters on specific heat consumption in a turbine's cycle. A mathematical model of steam-water cycle for a CHP (Cogeneration - also Combined Heat and Power) unit is being worked out. Methods for calculation of operating deviations with the application of correction curves and a mathematical model are described. Exemplary calculation results are presented.

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