A feature in the design of the ventilation system of the welding shop is the need to achieve high results of purification of air masses with relatively low energy costs.
Recirculation ventilation increases energy efficiency and solves the problem of energy savings in the case when 70%-80% of the exhaust air enters the ventilation system again.
Ideal for applications requiring a lower cfm range and a smaller footprint, model RV-10 offers airflows from 500-2,500 cfm, 3-7 tons of packaged DX cooling, and 75-200 MBtuh of indirect gas-fired heating.
Despite their complex appearance, fan curves are fairly easy to interpret once one gains an understanding of the conventions and terminology used, enabling selection and specification of the best fan for an application.