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    One Atmosphere Boiler - Electric Superheated Steam Generator

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    OAB™ Models

    OAB Models are available with single-phase and three-phase controls. 

    Easy to Install. Turn on-off as required. 

    Shown below is a three-phase scalable platform OAB-36 system.

     

    Steam 3 Phase layout

    Do Temperature and Pressure Impact a Steam Reaction?

    OAB® Compared to Traditional Boilers

    Steam Calculator, Productivity Enhancement and FAQ's |Physical Properties of Moist Air/Gas |

    What are Steam and Humidity?

    Each platform is individually controlled allowing significant flexibility of use

    Power and Temperature Panels with Safety Interlocks

    |Multi Zone | TRIPAN |  

    | HIPAN-2014 & XPAN-2014|BPAN-2014 |
    Industry tested MHI control packages include standard DACS 2 with USB download graphic display on panel

    Power Panels.

    Three Phase include 415/440/480/600V.    Single Phase include 115/120 208/220/230/240V.

    Easy Flexible Connectors

    Vittori-Tubes Fitted to Steam Units

     

    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, heating of vats, cpg bottle labels, cleaning at several levels, superheated steam drying and dozens of other specific applications requiring a high efficiency boiler that does not require standard boiler certifications.  Use to replace boilers with better efficiency or to augment steam applications.

    Pure Steam. Clean Steam. One Atmosphere Boilers 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. OAB steam is also suitable for use as utility steam in many applications due to its high energy content. 

    Highly Scalable. OAB units can produce from 1kg/hr to over 1000kg/hr. 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.

    How does one increase the rate of production?

    • Short Answer: Increase the temperature of t he process gas or steam.
    • Long Answer: Please click to Steam Calculator page.

    Better conversion factors allow 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. 

     

    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 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).

     

    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.

    Request OAB Quote

    Steam Generator Comparisons

    Steam Generator Comparisons



    Feature One Atmosphere (OAB) Steam Water Tube Steam Boilers Electric High Pressure Steam Boilers
    Maximum Steam Temperature1 300-1300°C Standard.   Choice of Models. Sometimes up to 600°C with Economizer and Superheater. 134°C for 3 bar steam.
    Delivery to Initial Start up. Models are easily installed in a day and there is no anticipated wait for certifications to start. Unknown. Small units could be plug and play.  Large units may require certification time.
    Efficiency >95% <85-90% ~85-95%
    Idle Energy Waste Low (Choice of Continuos or On-Off steady-state steam) High Moderate
    Non Steam Producing Energy Usage Time
    (Start Up Time2) 
    Nearly Instant 60+ Minutes. Becomes slower with higher pressures and volume requirements ~60 Minutes. Becomes slower with higher pressures and volumes. (Not including cool down and pressure release for autoclaves)
    Suggested Inlet Temperature3 Tap 40-60°F 20-35°C
    Capital Cost per Kg of Steam3 Low.  Financing a vi lab le when qualified. High Moderate. Depends on temperature/pressure required.
    Operational Costs4 Low even up to 1300°C. High Low-Moderate
    Unit Footprint Starting at 1'x1'x1'.  Small and remotely locatable power panels. Large Depends on size and pressure requirements.
    Plug & Play Operations Yes No No
    Requires Boiler Certifications5 No Yes Yes
    Downtime6

    Low (Unit can be used for continuous steady-state steam).  On account of the low foot print and modular designs the MHI-Never-Down Service™ is available for all steam units as applicable.

    Low-Moderate Low
    Utilizes Combustion7 (Requires Ventilation) No Yes No
    Energy Needed to produce 100 Kg/hr steam from cold start ~100 kWh @~350°C.  Water at Room Temperature to Steam. ~150-200 kWh Equivalent (Including start up time consumption).  Not always reported from room temperature water. ~150kWh Equivalent (Including start up time consumption). Not always reported from room temperature water.
    Power Weight [Kg Equipment/(Kg/hr) of steam] for a 100kW Generator ~2 Kg per Kg/hr of steam. ~5 Kg per Kg/hr of steam (Weight increases with temperature/pressure) -
    Maximum Work Potential (Based on second law limitation)  Base is 1 Bar 100C liquid water for all.

    672 kJ/Kg for 500°C superheated steam

    1973 kJ/Kg for 1300°C superheated steam

    755 kJ/Kg for 10 Bar saturated steam

    1169 kJ/Kg at 100 Bar saturated steam

    Generally not used for creating work.
    Enthalpy (heat) Content 3489 kJ/Kg for 500°C superheated steam at 1 Bar

    2777 kJ/Kg for 10 Bar saturated steam

    Saturation steam temperature 180°C

    2725 kJ/Kg for 3 Bar saturated steam

    Saturation steam temperature 134°C

    Running at Partial Capacity With MHI Electronic Controls, No loss of efficiency

    Significantly lower efficiencies, if model is capable

    Lower efficiencies

    Air Contamination Effects

    Extremely high operation temperatures diminish effects of air

    Air contamination harms output

    No air contamination is allowed (strict)

    Piping Losses Discrete, locatable units reduce necessary piping. The one atmosphere pipe can be better insulated and lighter. High pipeline pressure combined with long piping distances leads to heat loss and dangerous conditions in the event of pipe failure.  Pipes can be heavy. High pipeline pressure combined with long piping distances leads to heat loss and dangerous conditions in the event of pipe failure.  Pipes can be heavy.
    How far can I run my pipe?  Infographic.
    Typical Improved Efficiencies (Energy) Application dependent -  sometimes over 50% - -
    Improved Water Efficiency Application dependent -  sometimes over 50% - -
    Request OAB Quote

    1Maximum Steam Temperature obtained from production models; includes the use of superheaters.
    2Time from a cold start to reach maximum operating temperature.
    3Capital Cost per Kg of Steam calculated by dividing device output by device cost. Similar magnitude output devices are used. Prices used in calculations are general estimates obtained from public sources.
    4Operational Cost per Kg of Steam calculated by dividing output by resources consumed, excluding water. Resources assume prices of $0.09/Kwh and $5/1000 Cu Ft for Natural Gas.
    5Boilers using high pressure vessels may require annual inspections and certification certificates especially when over 1 bar gauge. Pressure certificates, ASME and local government regulations however vary considerably and could change so please confirm with local authorities.  Please click here to review some of the codes posted on the web.  Steam generators that operate at One Atmosphere may not need certifications.
    6Most boilers require routine cleaning and inspections that impact uptime.
    7Combustion by products include NOx and other harmful gasses. Combustion restricts applications of many steam boilers.  Almost always, flame and pressure certifications codes if applicable are related to safety.

    Why use the OAB®

     

    Real Cost of Project:  If you use a gas fired boiler say 72 KW units perhaps could be used but one has to add several hours of boiler running time.  One will in reality use a lot more energy, because unlike the OAB® steam generators,  gas boilers are not a quick start and shut down operation.  Please add additional monitoring and labor time.  Also add inspection time and pressure fittings/lines will be required with any conventional boiler. For gas boiler one needs a separate set up and construction management crew and installation crew. 

     

    Clean: For each kWh of electricity generated by fossil fuel fired power stations about 0.45kg of carbon dioxide is produced. Burning fuel will produce CO2 in a gas or fuel fired boiler.  For the electric boiler there may have been CO2 produced at the power plant.  Big plants have more efficient cleaning possibilities.  Please vent carefully if burning fuel.

     

    Traditional boilers yield saturated steam (Tsat and Psat are linked). Boiler efficiencies increase with lower pressures. At 10 Bar the saturation temperature (Tsat~180C) is much lower than the basic OAB output temperature.  High temperature can almost instantly be achieved with the OAB and other MHI steam generators at a safer 1 bar pressure.  Regardless please take all precautions e.g. that include high quality safety glasses, non-porous insulated clothing, high temperature non-porous gloves, proper boots and all other safety equipment when in the presence of steam generators.

     

    If the steam is for heating purposes, please compare the enthalpy.  If the steam is for work purposes please use the work potential row below, the work potential increases with both temperature and pressure.  Work potential is measured from 25°C base temperature.  The cost of boilers increases for very high pressure ratings.  However even at 100 Bars the  saturation temperature is only 311°C.  Again a fairly easy and routine temperature from the OAB steam generator.

    1 Bar =100000 Pa = 14.5 psi

    10 Bar =1000000 Pa =145 psi

    100 Bar = 107 Pa = 1450.3 psi

    Steam Tables

    Pounds of CO2 emitted per million BTU of energy for various fuels: 

    Coal (bituminous) ~206
    Diesel fuel or heating oil ~161
    Gasoline (common) ~157
    Propane ~139
    Natural gas ~117




    Models

    One Atmosphere Boiler OAB® Standard Models

     

     

    Single Phase Models

    (small foot-print)

    Efficient steam

          

     

    Easy to connect. 

    Single Phase 550°C to 1300°C Models

    (small foot-print)

    One Atmosphere Boiler

    Easy to connect.  IXPAN shown.

    IBAN shown.

    Model #  Amount of Steam Produced

    (Nominal)

    Total Electrical Power/Exit Temperature

    (Nominal Values Shown)

    OAB-4-300  4kg/hr

    ~ 4-6 kW

    Single Phase Model

    350°C

    OAB-12-300  12kg/hr

    ~12-14 kW

    Single Phase Model

    350°C

    Model # Amount of Steam Produced

    (Nominal)

    Exit Temperature

    (Nominal Values Shown)

    OAB-4-550

    OAB-4-750

    OAB-4-1300

    4 kg/hr

    550°C

    750°C

    1300°C

    OAB-12-550

    OAB-12-750

    OAB-12-1300

    12 kg/hr

    550°C

    750°C

    1300°C

    Pictures are for illustrative purposes.  Please contact MHI for a quote.

     

    Three Phase Models and MightySteam® Custom Solutions 

    High Flow and Special MightySteam® Applications

    Scalable Superheated Steam  steam

    Picture shows OAB-36 and OAB 4 Scalable Platforms 

    Platform size is ~ 5' by 2.5' only for even OAB-36.  Compare size and performance with traditional boilers.

    Model Typical Applications

    Amount of Steam Produced

    (nominal)

     

    Total Electrical Power/Exit Temperature

    (nominal values Shown)

    Approximate financed monthly price when available

    (Please contact MHI for availability and other details)

    -OAB-4-300

     

     

    4-6 Kg/hr Steam

    ~ 4-6 kW

    Single Phase Model

    300°C-750°C

    Custom Fit to Application

    Contact MHI

    -OAB-12-300

     

    12-13 Kg/hr Steam

    ~14 KW

    Single Phase Model

    300°C-750°C

    Custom Fit to Application

    Contact MHI
    OAB-36

    Replace Boilers

     

    36 Kg/hr Steam

    About 39kW and higher depending on Temperature

    Models from 300°C-1300°C

    Contact MHI
    OAB-72

    Boiler

    Heat Exchanger Inputs

    Heavy Steam

    72 Kg/hr Steam

    About 75kW About 39kW and higher depending on Temperature

    Models from 300°C-1300°C

    Contact MHI
    OAB-108

    Boiler

    Heat Exchanger Inputs

    Heavy Steam

    108 Kg/hr Steam Models from 300°C-1300°C Contact MHI
    Custom Custom Custom

    550°C

    750°C

    1300°C

    Contact MHI

     

    The kg/hr is nominal steam production rate.  Temperature and production rate are setting dependent.

    350 Models expected to produce steam temperature in the range of 300-380°C

    550 Models expected to produce steam temperature in the range of 500-700°C

    750 Models expected to produce steam temperature in the range of 700-900°C

     

    The output for the clean steam is easy to fit.  Sealant is provided for the user when attaching tubing for steam travel beyond the exit.  Vittori tubes which are insulated flexible tubing with connectors are also available from MHI.  Please Contact to request additional information.

    Water Flow
    Typical 1.5" NPT Outlet Nozzle
      Easy to attach to all pipes.

    Assortment shown below.

    1.5 Threaded NPT Output Nozzle

     


    All control systems are industry tested.  Easy to Install and Use.

    Single Phase 220/240V (XPAN) or Three Phase  (TRIPAN) for Common World-wide Voltages

    Applications

    Applications


    Consumer Packaged Goods Industry

    Rapid Packaging With Energy Benefits
    Easy steam tuneel for several uses

    ~90% energy and water conservation, even for the most complex-shape glass bottles.

    Bring your designs to life with beautiful colors and creative shapes

     

    Antimicrobial Steam
    Portable steam generator. 

    Cleanliness at several levels

    One Atmosphere Boiler Other Suggested Applications

    Use HGA-M or OAB® for Oil Softening of Heavy Oil in Wells and Tanks.  Transition towards smart capital expenditure (CAPEX) and innovative operational expenditure (OPEX) are imminent in the oil and gas industry, especially with highly unstable barrel prices. Reduce foot print.  Easy to carry.  Reduced use of electric and water.

    Pilot Plant Steam Generator for Possible Pharma Applications.  Remember price of energy is almost the same for one unit of energy but electrical devices can be very efficient, better controllable and often much cleaner.

    Electric Steam Generator. Foam cutting high speed, low power, no mess with thermal steam cutter.  Use best steam that evaporates on cutting.

    Steam Bluing/Blackening for attractive surfacing

    Garment pressing. Car seat pressing.  Laundry use.  The energy requirement is approximately 0.15 – 0.30 kWh / kg of linen (source http://www.rabc-wfk.com/module3/Module3_EN.pdf). This is a good number for dry-cleaning but for full steam drying it may be best to ue a number like ~1kWh per /kg.    If you are using and paying operationally for a 300kW boiler (1,024,327 BTU/hr); are you dry-cleaning 900 kg (close to a ton of linen) of laundry in an hour? If this is not so please consider OAB instead to save energy. The cost of energy is similar whether gas or electric..  See also this page for energy efficiency. 

    Note OAB steam generators may be turned of and on quickly unlike most boilers.

    Seats pressing in rapid demand operations like automobile seats manufacture.  At 10 cents per kWh a 300 kW boiler operational cost could be as high as $30 an hour.  A 10 kW OAB machine reduces this payment to ~ $1 per hour.   Many electric companies offer grants to make capital changes with energy efficient new machinery.  Whether a 12 kW OAB may substitute for a 300 kW boiler depends on the application.  Most applications where a high velocity jet is required can be met by the OAB.  Please see video in Videos and Media Gallery section. Most often pressure is not required in an applications and is often just a way for traditional boilers to achieve high temperature.

    Steam Copper-tubes for water delivery to start protective oxide (Malakite) barrier in them.  Reduces copper contamination and other contaminants from pipes.  Do internal pipes. Please contact MHI for known technical results.  User may need to call government agency for results. please contact MHI for details.

    Reduce contaminants in water pipes

    High Pressure Steam Boiler can be avoided.  Laundry boilers, tunnels and other energy improvement uses are possible in the garment and laundry industry.  Several levels of efficient cleaning and de-wrinkling  Higher temperatures de-wrinkle leather more easily.  E.g.  Clean  fifty pound loads with an OAB® and canopy.  The canopy does not need to be a heat dissipating rigid surface! Choose your own.

    Process Steam for oil (normal and heavy oil) and natural gas

    Ultra High Purity Steam. Also called UHP or UHT steam.

    Superheated Steam Generator

    Consumer packaging labels.  Improved energy, less water use, improved speed and quality.

    Foam cutting.  Thick foam cutting speeds ~1"/s.

    Commercial Steam Boiler and OAB.

    Cheese Making

    "Heat Processing to make cheese is varied in practice. The time and temperature programme for heating is determined by the method of heating and the type of cheese. Some cheeses require heating to temperatures above 40°C-56°C (133°F) Normally at 37 – 38°C the activity of the mesophilic lactic acid bacteria is retarded.  Time is taken check the acidity, Above 44°C or more the mesophilic bacteria are deactivated, and they are killed if held at 52°C between 10 and 20 minutes. Heating beyond 44°C is typically called scalding. Some types of cheese, such as Emmenthal, Gruyère, Parmesan and Grana, are scalded at temperatures as high as 56°C (133°F) . Some of the most heat-resistant lactic-acid-producing bacteria survive this treatment e.g. Propionibacterium freudenreichii ssp. shermanii". Credit to http://www.food-info.net/uk/dairy/cheese-production.htm is acknowledged for the above information.

    Pure Steam Generator.  Milk and Cottage Cheese.  Augmentaion of process.  Significant reduction of energy from unweildy and high Btu/hr (kW) boilers currentlysee use. 

    A frequently asked question is:  I do understand that milk products have increased considerable resistance to deterioation when UHT steam is used.  However will this denature protein in any way that is bad for me?  The answer can be found on many web sites like http://www.bodybuilding.com/fun/muscle-mystery-does-denatured-protein-still-make-you-grow.html.   

     

    Superheated Process Steam

    Electric Superheated Steam

    Bakery Operation with on demand (on-off) steam.  Food processing humidification.

    Process Steam

    Steam Boiler for Steam Kettles, Processing Mash with Steam, Saving Energy and Materials.  Save considerable energy and time.  Generally from cold start cut up to 1/3 the time.

    Commercial Steam Generator

    Industrial Steam Generator

    Tankless Instant Steam Generator

    Endotoxin Free Steam

    Industrial Steam Boiler

    Laboratory Superheated Steam

    Low Pressure Steam Boilers

    Electric Superheated Steam Generator

    High Pressure Steam Boilers

    High Temperature Steam

    Low Pressure Steam

    Low Pressure Steam Boiler

    Steam Generator Boiler

    Steam Roasting

    Electric Steam Boiler

    Electric Steam Superheater

    Steam Boilers

    Steam Reforming Hydrogen

    Wine barrel conditioning and reconditioning.   See also hybrid.

    Heavy Oil recovery with low energy and water input.

    Use in Oil storage and Oil tanker applications.

    Wood Conditioning for utility, packaging and hobby use.

    Safe kettle-heating for Breweries, Flavors and other such use Industries. 

    Energy efficient kettle heating for Breweries, Flavors and other such uses.

    Superheated Steam Drying

    Instant Steam Generator

    Superheated Steam Boiler

    Touch-up steam MS400-01 - 1Kg/hr of steam up to 400°C. Use for steam spray purposes only.

    Request OAB Information


    Traditional boilers yield saturated steam (Tsat and Psat are linked). Boiler efficiencies increase with lower pressures. At 10 Bar the saturation temperature is only 180°C.   This temperature can almost instantly be achieved with the OAB and other MHI steam generators at a safer 1 bar pressure.

     

    If the steam is for heating purposes, please compare the enthalpy.  If the steam is for work purposes please use the work potential row below, the work potential increases with both temperature and pressure.  Work potential is measured from 25°C base temperature.  The cost of boilers increases for very high pressure ratings.  However even at 100 Bars the  saturation temperature is only 311°C.  Again a fairly easy and routine temperature from the OAB.

    1 Bar =100000 Pa = 14.5 psi

    10 Bar =1000000 Pa =145 psi

    100 Bar = 107 Pa = 1450.3 psi



    Media Gallery

    Disinfection Studies, Videos, Cutting Nozzles and more.....no mess, low power and high speed use for from cutting to shrinkwrap.  Contact MHI for details.

    Steam-jet cleaning of glassware such as glass-vials with 550°C superheated high quality steam. Results from http://bayzi.com/ohio-state-presentation are only guidelines for biofilm elimination- please verify directly.

    Ohio State Presentation
     

    MightySteam® is a Registered Trademark.

    OAB® is a Registered Trademark.

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    750 Redna Terrace
    Cincinnati, OH 45215, USA
    Telephone: 513-772-0404 | Fax: 513-672-3333

    © Micropyretics Heaters International Inc. 1995 - 2016

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