Thunderstorm and Lightning: the Temperature Effect on Climate Change of Rangpur Region in Bangladesh
Bakul Kumar Chakravorti,
Prosannajid Sarkar,
Atiur Rahman,
Atikur Rahman
Issue:
Volume 6, Issue 2, June 2018
Pages:
31-36
Received:
20 February 2018
Accepted:
11 March 2018
Published:
18 April 2018
Abstract: Thunderstorm and lightning are the burning issues in present. Raising temperature badly affects on the environmental balance. We have collected data and studied the temperature variation and the temperature effect on the environment and on the people of Rangpur (divisional city of Bangladesh) region. Increase of monthly maximum temperature is 0.60°C, monthly minimum temp is 1.39°C and monthly mean temperature of Bangladesh is 0.79°C per 100 years [1] where in last 29 (1984-2013) years the temperature of Rangpur station is increased almost 1.2°C. [2] Thunderstorm and lightning occur for this increased temperature. We also analyzed the number of occurrences of thunderstorm in last ten years. We tried to find out some way to reduce the temperature increase and to safe the people. We constructed earthen in five multi-stored buildings and observed the lightening effect on and around of these buildings in last ten years.
Abstract: Thunderstorm and lightning are the burning issues in present. Raising temperature badly affects on the environmental balance. We have collected data and studied the temperature variation and the temperature effect on the environment and on the people of Rangpur (divisional city of Bangladesh) region. Increase of monthly maximum temperature is 0.60°...
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A Simplified Mathematical Model for Calculating the Thermal Efficiency of a Wood Pellets-Fired Industrial Boiler on the Basis of Error Analysis Method
Xiaozhou Liu,
Ruiyu Li,
Chunhui He,
Yuesheng Li,
Hongwei Wu
Issue:
Volume 6, Issue 2, June 2018
Pages:
37-41
Received:
17 October 2018
Published:
18 October 2018
Abstract: The traditional calculation method of industrial boiler thermal efficiency needs to input many parameters, which leads to a lot of complicated calculations. It is not suitable to make an accurate judgement on the operating condition of an industrial boiler, especially a wood pellets-fired one. In order to solve this problem, the paper presents a simplified mathematical model to calculate the thermal efficiency of a wood pellets-fired industrial boiler on-line by using an error analysis method. More concretely speaking, first, based on the results of the error analysis of an industrial boiler thermal efficiency, main factors that affect the thermal efficiency of a wood pellets-fired industrial boiler are obtained. Then, a simplified mathematical model to calculate the thermal efficiency of the wood pellets-fired industrial boiler is developed in terms of the major factors. Finally, the calculating results of the industrial boiler thermal efficiency based on the model are compared with the test values given by Guangdong Special Equipment Inspection and Research Institute and the maximum deviation limits within 3%. Therefore, it can be concluded that the simplified mathematical model proposed in this paper for calculating the thermal efficiency of the wood pellets-fired industrial boiler is proved to be practical, applicable and worth popularizing.
Abstract: The traditional calculation method of industrial boiler thermal efficiency needs to input many parameters, which leads to a lot of complicated calculations. It is not suitable to make an accurate judgement on the operating condition of an industrial boiler, especially a wood pellets-fired one. In order to solve this problem, the paper presents a si...
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