초록(영문)
After the 2015 MERS state, the air-borne infection has risen as a serious issue considering the feature of modern society where people are densely populated in specific area. However, air conditioning equipment has been installed in Korean schools in general, most of air conditioning and heating systems are attached on ceilings and only few schools have the inlet and outlet air conditioning system. These convection dependence systems are obedient to air-borne infection. Our research is about making the classroom a positive pressure environment for minimizing air-borne infection without changing the existing room heating system. We proposed the new air conditioning system for our classroom by mathematical and physical solutions and verified our system with simulation programs and real construction. Another objective was improving a waste heat recovery facility because our new air conditioning system accompanies the thermal losses and existing waste heat recovery facilities do not work well for our new air conditioning equipment. We changed the structure and material of the facility and verified with simulation programs. As a result, positive pressure environment from our new air conditioning equipment reduced the convection of infective particles effectively. An improved waste heat recovery facility showed the increase of heat exchange efficiency 0.39 points.