Determination of the Required Power of Tube Electric Heater for Distillation Desalination Plant

2018 3rd International Conference on Environmental Engineering and Sustainable Development

生态环境科学

Blagin, E.V.^1 ; Shimanov, A.A.^1 ; Gorshkalev, A.A.^1

Heat Engineering and Heat Engines Department, Samara National Research University, R-Samara, Russia^1

关键词: Analytical and numerical models;    Desalination plant;    Design operations;    Distillation process;    Mechanical vapor compressions;    Power selection;    Technical requirement;    Working process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/264/1/012019/pdf
DOI  :  10.1088/1755-1315/264/1/012019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This article deals with the determination of tube electric heater for a distillation desalination plant. Tube electric heater is required for the distillation process because it prepares input water for the working process on the start regime of the desalination plant. Depending on its power, a time consumed for start regime will vary. Meanwhile, technical requirements for distillation desalination plants with mechanical vapor compression demands that plant must reach design operational regime within a certain time limit. Correspondingly, selection of the power for tube electric heater became an important task during distillation desalination plant designing. Amount of energy, which is necessary to add during heating, depends on the amount of water inside, mass-dimensional characteristics of the desalination plant and heat transfer with the environment. Algorithm for power selection is developed. This model allows determining the time required for the plant to reach a design operation regime. This time varies dependently on the power of the heater. Both analytical and numerical models of this dependencies were developed. A numerical model was used utilized to estimate the influence of the heat exchange with the environment on starting operation time. For the described plant, required power of TEH is equal to 24 kW.