Increase of Energy Efficiency of the Mechanical Ventilation System

This article deals with an urgent issue - that of the deficit of natural energy resources, ways of their sustainable utilization and the need to find new alternative energy sources. It proposes a way to improve the efficiency of energy usage as well as to save energy in a mechanical ventilation system through the heat recovery of ventilation emissions by platetype waste heat exchangers. Schemes of steam-curing the supplied air in ventilation systems featuring waste heat recovery and partial recirculation of exhaust air in a cold season have been developed for the dining halls of the canteen at Lipetsk State Technical University. This paper relies upon the results of microclimate parameter analysis in the scenarios of using the proposed scheme and the current direct-flow scheme of supplied air treatment in cold and transitional seasons. It provides conclusions on the possibility to attain optimum parameters of air inside the serviced rooms in case of implementing the scheme of steam-curing the supplied air with the recovery and circulation. The research also involved an appraisal of feasibility of using heat recovery installations in air ventilation systems.