Study On The Simulation Of Thermal Environment And The Way Of Heat Hazard Controlling By The Airpak Software For A Steel Cooling Bed

With the high-speed economic growth and social progress, people are increasinglyconcerned about the occupational health of operating environment. There are a lot ofnatural cooling rebar in the cooling bed, so the workers around the cooling bed areworking in the hot environment with strong radiant heat. In addition to high-temperaturethermal radiation, there is noise occupational hazard in the operating points around thecooling bed. Studies have shown that it will induce synergistic effect when heat andnoise existing at the same time, moreover the synergistic effect will aggravate damageto humane heath. Firstly, the Airpak model is constructed to simulate the thermalenvironment and the accuracy of the model is verified. Then, comprehensive appraisalmodel of occupational hazards based on the interactive effect between heat and noise isput forward and operated in the paper.Lastly,the control method of heat and thermalradiation is investigated by Airpak simulation software.The maximum relative error of dry bulb temperature and radiation temperature arerespectively5.7%and6.4%, which the result of simulation by Airpak softwarecompared with the actual measurement data.The weight of each evaluation index is determined by the way of AnalyticHierarchy Process (AHP) and qualitative and quantitative evaluation information isassessed by two-tuple linguistic information in the comprehensive evaluation model.Furthermore the synergy correction factor between heat and noise is built to reflect itsextent of impact. The results of comprehensive evaluation of occupational hazards as following, the point of A is0.404,the point of B is0.395,the point of C is0.362.Thesemantic evaluations for the three operating points around the cooling bed all arebetween “poor” and “normal”，and more erroneous tendency to “poor”, the point A andB are “much better than the poor”, the point of C is “slightly better than the poor”,so itneeds to take measures to improve the level of occupational health of the operatingpoint.Three different conditions of apron are set to explore the effect of each conditionfor the controlling of heat and thermal radiation. From the imitation outcomes by theAirpak software, it is clear that it will be a good controlling effect to the thermalradiation for each condition and the third condition is best which sets2meters wide and2meters high baffle. The consequents of comprehensive assessment of occupationalhazards for the working points in the third conditions following, the point of A is0.485,the point of B is0.491, the point of C is0.411.The semantic evaluations for the threeoperating points are more erroneous tendency to “normal”, the point A and B are “muchbetter than the normal”, the point of C is “slightly better than the normal”. Theevaluation results are better compared with no baffle, so the baffles for controlling heatradiation and improving the value of comprehensive evaluation of occupational hazardshave a certain effect.