Study Of A Fast And Efficient Paver Screed Heating Methods

With the development of the national economy and the construction of highway, theconstruction standards of highway continue to be improved. This require us to improve thequality of paving asphalt pavement. Whether the paver screed is preheating or not, it willseriously affect the quality of the paving at the time when the paver start. Therefore, in orderto improve the work efficiency and paving quality of the paver, we need to heat the paverscreed rapidly and effectively.In this paper, the paver screed heating system is our research object. introduced theexisting paver screed heating system, analyzed the advantages and disadvantages of eachsystem, and proposed a new method to heat the paver screed which use diesel oil as fuel. Inorder to improve the quality of diesel fuel combustion, it is necessary to make diesel fuelatomization occurs. Atomization effect is good or bad will directly affect the quality of dieselcombustion. Introduced the three main atomization method of liquid atomization. By researchthe fuel atomization process, established the model of jet atomization. Analysis of theinfluencing factors of atomization, and seeking the way to improve the quality of atomization.Studied the model evaporate and combustion of Single drop of oil droplets, Analyzed thediesel combustion process, Calculated the amount of air required for complete combustion ofdiesel fuel, and the amount of smoke produced. Analyzed heat transfer process.in thecombustion chamber when paver screed heated. Proposed feasible solutions of the paverscreed heating system,Comparing he advantages and disadvantages of them, comprehensiveanalysis and choose the best solution. By contrast with the economic of the heating methodusing liquefied natural gas (LNG). It is concluded that using diesel fuel for heating screed is akind of high efficient heating and fast method, which is more economic.