OAB® – Variable flow and variable temperature, instant high-quality, dry superheated steam generators.
The new way to make energy-efficient instant dry steam. Save energy and improve productivity.
Innovative and Modern: No need to specify a high pressure just because the requirement is for high temperature steam. OAB® units offer unique full- back pressure capability as required. On off at will. Steam temperature within minutes. No idling required. Sophisticated PLC and HMI controls.
Pure Steam. Clean Steam. One Atmosphere Steam Generators/Boilers from MHI generate superheated steam that is free of contaminants. The OAB’s steam is ideal for pharmaceutical, cosmetics and other industries requiring the highest quality steam. The OAB® steam is also suitable for use as utility steam in many applications due to its high energy content.
The steam generator works by drawing water from a water -tank and almost instantly converting it to steam. The steam discharges quickly through a standard pipe. The flow and temperature can be varied with the control panel. Steam generation is almost instantaneous.
- Now offering variable flow for OAB-40, OAB-100 and OAB-180. OAB units offer independent control of temperature and flow. Control is provided so that the user has wide flexibility to optimize a process and optimize energy use.
- For steady-flow units with standard selection of variability in flow-rate and temperature, please specify the OAB model from the table below.
- Instant steam because the steam is directly heated not through a pipe. Low energy loss in water pumps. Low number of connectors compared to other steam generation methods.
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OAB-4 Electric Panel Rating Options UL, cUL and CE.
Single Phase 4 Kg/hr. Steam up to 1300°C. From 5KW electric power. For variable flow a steam side discrete or continuous vales are provided.
OAB-12 Electric Panel Rating Options UL, cUL and CE.
Single Phase 12 Kg/hr. Models for Steam up to 800°C+. From 12 KW electric power. OAB-40 Electric Panel Rating Options UL, cUL and CE.
Three Phase 40 Kg/hr. Models for Steam up to 800°C. From 30 KW electric power. Please specify if variable flow is required.
Back pressure up to 50 Bar rating available
OAB-100 Pressure vessel third party rating is offered (Section V111. Div. 1).
Electric Panel Rating Options UL, cUL and CE.
Three Phase 10 Kg/hr. Models for Steam up to 800°C. From 60 KW electric power. Please specify if variable flow is required.
Back pressure up to 50 Bar rating available
OAB-180 Pressure vessel third party rating is offered (Section V111. Div. 1).
Electric Panel Rating Options UL, cUL and CE.
Three Phase 180 Kg/hr. Steam up to 800°C. From 108 KW electric power. Please specify if variable flow is required.
Back pressure up to 50 Bar rating available
- From Chemical processes, Steam drying, Antibacterial, Plastics to Dry-cleaning and so much more. Please specify steam quantity Kg/hr, required steam- temperature and back-pressure rating. The back-pressure rating will determine the shell rating requirements.
- Easy Connectors and Steam Tube Extenders.
- In the picture above a K Clamp connector is shown on the left of he OAB-12-30 and the Extender Vittori Tube is shown on the right.
- The OAB-4 and OAB-12 have steam side valve options for regulating the steam
- The OAB-25, OAB-50 and OAB-100 offer steam regulation which is electronically done with the logic controls.
100Kg/hr. Steam-800°C
Watch a video of the OAB-12. Instant dry steam.
Multi point steam distribution -4
Vittori Tube Extender
K Clamp set
Replace all boilers with on-off steam generators.
Comparing OAB® instant (within minutes) steam-generators to others:
- High quality high temperature steam is made with a minute. When not required, the unit can be switched off. There is no idling required. Good steam generators provide instant on/off capabilities which saves energy. The system cools down quickly as there are no chambers or pipes to cool-off.
- The controls include SCR’s, soft start and other modern features that enhance the element life. The controls include PLC and HMI.
- The energy efficiency from cold water to steam estimate is ~95%. Many companies may claim this, but on a closer examination the numbers, one may find that the base for the energy estimation could be pre-boiled water one that ignores the long start-up cycle time . The correct energy efficiency compares socket-power to steam-power with a base energy of room temperature water that will be converted to steam.
- The unit uses 50/60Hz. OAB® steam Generators do not use high frequency like the induction frequencies that can cause disruption in modern plants.
- ASME Section V111 Div 1 and other ratings are offered.
- OAB’s provide full control of steam temperature, steam rate and pressure in an independent fashion. This is not old boiler technology. It is the modern instant steam technology.
- Some competitors use generators for pipe heating which then heats the fluid. Such technologies translate to heating thick high-pressure pipes with external heat. Such systems are not only then energy inefficient but could also be the source for ruptures at high temperatures. In the OAB® the water is directly heated.
- The OAB offers a low number of external connectors compared to other steam generation methods. Just one connector to the user’s pipe is required for the OAB.
- The back-pressure rating will determine the shell rating requirements. This feature allows for money savings if a back pressure is not required. Steam generators do not need pressure to offer temperature.
- The OAB has a compact footprint and therefore easily locatable at the point of use.
- Easy Connectors. The units as provided are completely operational – no need for user to purchase any additional parts to operate the units.
- Steam quality is very high. No water droplets.
- The most important could be that it is a continuous process and can be run for short durations or long durations. Because steam production is instant – within a minute, one does not have to plan a shut down or start up outside working hours. Because it is a open system the water input is continuous and only on when required for operation. Unlike Boilers and their modern cousins – no special chambers are used for boiling. This gives a plant wide operational flexibility and offers high energy-efficiency. The system is designed with sustainability goals in mind.
Simple to use steam production, flow rate and controls
Transforming Steam Technology For Significant Energy and Water Savings. Savings efficiencies reported are from On to Off condition. No requirement to heat any tubes or nozzles to produce steam. Conventional boilers are never 100% dry. The old conventional boilers heat loss causes steam to condense and become wet as it travels down the steam line. A decrease in steam dryness hinders heat transfer; it is, therefore, important to monitor steam dryness in order to provide optimum heating efficiency for your system. The OAB® steam is very dry.
Compact Industrial Electric Steam Generator 50 Kg/hr
Steam Connectors
Supechargers rated to High Pressure
cN-BPE Connector for OAB-4
SaniZap-600-4-240
Steam Rate Flow Adjustment: Discrete and Continuous Mode is Available
Optional cN-BPE for continuous adjustment of steam rate.
Optional: Addition of gas to steamers.
Steam velocity above 50m/s depends on model.
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| OAB® 12 Models | Typical Model Pictures | Steam
Produced (nominal) |
Total Electric Power Exit Temperature(nominal values) |
|---|---|---|---|
| OAB-12-300 (Maximum Temperature 350-400°C)
OAB-12-550 (Maximum Temperature 550-600°C) OAB-12-800 (Maximum Temperature 750-850°C) |
 OAB-12-300
|
12 Kg/hr Steam | ~12-15 KW Single Phase Model
300°C-1300°C Custom Fit to Application please note units can be one atmosphere rated or rated to higher pressures like 3 Bar- please specify |
or
Please visit our OAB® section in the MHI web-store for detailed information about the OAB items available for web purchases.
OAB®-4 Models Models for 300°C, 550°C, 800°C, 1300°C Steam 4Kg/hr (see below for information- please note units can be one atmosphere rated or rated to higher pressures like 8 Bar- please specify). Click to Contact. Dry Steam.
OAB® -12 Models Models for 300°C, 550°C, 800°C Steam 12Kg/hr (see below for information- please note units can be one atmosphere rated or rated to higher pressures like 3 Bar- please specify). Click to Contact. Dry Steam.
GHGA Models where pressure and temperature are required.
MHI’s One Atmosphere Boiler superheated steam boiler features patented InstaSteam™ technology, allowing for rapid startup times, unparalleled efficiencies and up to 1300°C temperatures. BoilerFree™ technology allows most OAB® units to be installed without the need for traditional boiler certifications. The OAB® is ideal for use as an industrial steam generator, for dewrinkling operations, superheated steam drying and dozens of other specific applications requiring a high efficiency boiler that does not require boiler certifications. So many great uses in packaging, textiles, drying and more. Steam Applications.
Highly Scalable. Available in 4 or 12Kg/hr very high temperature steam. Smart steam. Modular design allows for easy upgrades and utilizing the unit where it is needed, all without routing steam or venting pipes. MHI is well known for high electronic power and temperature quality control panels
Compare Efficiency. Three types of efficiencies are important to consider. (1) the efficiency of the steam generation device where the OAB® and MightySteam® excel; (2) the efficiency of the downstream process that the steam is used for; and (3) the overall water usage efficiency and propensity to recycle the water. The one atmosphere steam-gas generator/boiler performs well in all three categories.
Controls: Please check with MHI as several control features in addition to the power controller are feasible for the temperature and flow rate.
Plug N Play – The OAB® devices are very user friendly. Standard 1.5″ NPT Nozzle, easy connectors in the back, for power source and OAB® Control Panels.
- New PV Models with above. PV models rated for high back pressure add to the cost so if not needed please choose one atmosphere steam.
- Steam Tunnel Applications. Several unique process -cost savings.
- General Steam Applications
Micropyretics Heaters International One Atmosphere Boiler (OAB) is 100% dry.
Plug-n-Play, Easy Piping and Connectors
Easy to attach pipes or superchargers (economizers). Uniquely configured K type clamp connectors make it easy to attach the steam pipe to any chamber or device. Easy to split the steam direction.
How does one increase the rate of production for many steam applications from drying to improved product efficiency?
Short Answer: Increase the temperature of the process gas or steam.
Long Answer: Please click to Steam Calculator page.
Better conversion factors allow the OAB® units to use less resources to produce more steam. A standard OAB® steam output at 350°C, is almost at the theoretical efficiency of power conversion for the OAB® steam generation! The OAB’s rapid start-up (generally with a minute from cold start) also adds considerably to the overall lowering of energy usage. No moisture is noted even at start-up.
The benefit of pure superheated steam comes from the temperature without the energy consumption sacrifice. This is in a way replacement of a large amount of low grade (low temperature steam) by high grade steam. Kindly read the tutorial information for SmartSteam(TM) on this page
| Water Flow Indicators on OAB | Connectors. Easy for OAB. |
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Several indicators including |
When individual streams of steam Vittori Tubes for Steam Discharge |
Getting to temperature quickly and faster results in lower operational wear and related costs i.e. an overall higher productivity with
corresponding higher kinetics. The output velocity of the 550°C OAB® steam is very high – almost 40m/s or more. This feature is used for the uniform heating of kettles/heat exchangers and for reaching large piping distances without significant loss of temperature. For industrial vats and kettles, the heating rate makes a considerable difference to the overall process economics. A general rule of thumb of productivity from traditional pressure boilers is – (0.35 Gallons of heated product like water)/kWhr. For the OAB-4® it is closer to – (1 Gallon/kWhr) i.e. almost three times (numbers may be lower or higher as they are situational dependent and one needs to evaluate on a case by case basis). Industries served for during. Please also see Single Phase OAB and Airtorch.
The OAB® offers a scalable design and because of the small foot-print qualifies for the MHI Never-Down policy. The scalable design allows
the user to choose what fraction of the boiler needs to be turned on on a given day or hour and changed at will. MHI electronics provide
full data logging, on-screen data acquisition display and a repertoire of 100 programs – all in the small sophisticated control panel.
How do Temperature and Pressure Impact a Steam Reaction?
OAB® and GHGA Compared to Traditional Boilers.
Steam Calculator, Productivity Enhancement and FAQ’s |Physical Properties of Moist Air/Gas | What are Steam and Humidity?
Synopsis and video, Steam Calculator, Productivity Enhancement and FAQ’s, Physical Properties of Moist Air/Gas
What are Steam and Humidity? What is mist and fog. High Efficiency Steam Recirculating Ovens
Convert kW to BTU/hr
1 kW = 3412.142 BTU/hr
One BoHP (Boiler Horse Power)= 33,500 BTU/hr = 9.803 kilowatts
More Calculators for Engineering Units. Please click here.
Steam Calculator – Superheated Steam. Click here.
Pressure Units Conversion
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