MHI Airtorch™ - Air and Process-Gas Heaters

Single Phase Power

• LTA - Up to 900°C. LTA is a process heater for air which requires a compressed air input.
• VTA - Up to 900°C. VTA is process gas heater with fan or blower capability. Please also see GVTA.
• MTA - Up to 925°C. MTA is sealed process gas heater which can take compressed air or compressed gas input.

High Power and High Pressure

• MVTA - Up to 1100°C. These are sealed process gas heater with fan or blower capability.
• GTA or GVTA - For high pressure vessel Airtorch use.  Custom engineering. Please contact us directly for assistance.

*Unit Life and Safety:  MVTA units provide forgiveness for temperature exposures beyond their rated capacity even by an extra 100°C for many models.

Very High Temperature

• DPF - Up to 1150°C (1200°C custom).  DPF models can take fan or blower input as well as a compressed air/gas input.

MHI Speciality

• Incredible Warranty.
• Inlet temperatures can be high on specific models MVTA.
• Pressure drop:  Very Low. MHI offers DirectFlow Airtorch.
• We take advantage of our combined thermal knowledge across diverse equipment offerings to optimize and provide low friction Airtorch systems.
• Quick Conversion: (800°C=1472°F) (925°C=1697°F)  (1000°C=1832°F), (1100°C=2012°F)
• (5 Bar=0.5 Mpa).

Need higher temperatures? Please don`t hesitate to give us a call or contact us. The kW required depends on the temperature of the exit gas from the Airtorch models and the flow volume required. Please use Easy Design Criterion or please use this formula to calculate approximate temperature vs. flow rate for a fixed power for an Airtorch model number.  MHI also provides flow rate vs. temperature for TA and DPF models.  Request Graphs.

Allowed Air/Gas Inputs: Air/Gas from compressor or blower or fan may be attached (varies by model). Some Airtorch models also accept high temperature feed gas as an input. Airtorch models are highly efficient electric process heaters (inline, cross line and independently standing models are offered).   DPF models have very low pressure drop associated with them. Inputs such as Gas Cylinders, Compressors, Blowers and even fans may be used depending on the model.

Airtorch Operation:   The flow rate and temperature are connected.   The heater cannot go beyond its rated temperature or power.   The thermocouple is integral to the

heater.  The principle of an air/gas heater is for flowing gas to heat within the residence time of heater/configuration.The flow temperaturecurve is given on http://mhi-inc.com/calculate-power-vs-flow-rate.html.

Flow Rate is Important:  If using a blower or fan the air flow will be controlled by the characteritics of the fan or blower.  Fans are employed when the drop in pressure of the system is no greater than approximately 50 in. w.c. (50 in. w.c./inches of H20 is approximately 1.8psi.) This condition remains true even when the fan output large CFM values. Blowers are considered in circumstances where larger pressure drops are present.

For LTA and MTA where the inlet flow is pressure driven, the flow rate is often set by an appropriate SCFM flow meter.  Minimum flow rate should be maintained.  MHI power controllers can be used to set power.

MVTA, GVTA type Airtorches and LTA`s may be purchased with several exit configurations which are specific to the model.  In addition further manifolding is possible.