The graphs below can be used for all MHI Airtorch Models.
The standard conditions flow rate (SCFM) vs. Temperature is shown below (per kW). You will be able to calculate kW or SCFM or Temperature if you know two of them. Please see selection tab on left for steps required to obtain kW if not known. Please choose TA class of Airtorch i.e. VTA, MVTA, LTA and MTA when exit temperature is below 925C. Please note that the maximum safe operating temperature for TA models ranges from 850-925°C depending on the model. When the exit temperature required is greater than 925°C please choose the DPF class of Airtorch. Please consult the higher temperature graph (DPF Models) shown below for the DPF models, namely DPF220MP-3, DPF220MP-10.5 and DPFMP220-15. In the graphs below please use the darker lines for continuous mode with start-stop conditions.
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Tips: The graphs of temperature vs. SCFM/kW above are for air. The position along the SCFM/kW changes with the gas. For nitrogen it is almost the same. Because of the range of inlet temperatures and power a range of steady state temperatures become feasible. Please consult MHI on the right system for your application. MHI Airtorch models also work with a low pressure drop. An increase in pressure required to drive the flow can often dramatically increase the required energy. MHI Airtorch models are designed with efficiencies in mind. Please consult with MHI on the best solution for your industrial process gas heating. If the flow of 1~1.2 kg/s is driven with 10 Bar pressure as opposed to low pressure (Airtorch type) then almost ~1 MW of power may be wasted for just driving the flow.
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VTA900-10BL in use