The Payback Potential of SubCom

The SubCom division of Inproheat Industries specializes in the development and advancement of submerged combustion systems for industrial liquid heating and evaporation applications. SubCom solutions are commonly found across industries such as oil and gas, food production, mining, waste water, chemical, and pulp and paper.

Among the primary benefits of using SubCom solutions are greater cost efficiency and environmental responsibility.

For example, a standard SubCom solution heating application with at least an 80% level of thermal efficiency can provide a 20% annual savings on carbon tax and an annual savings of 40% on the cost of natural gas. Compared to an annual standard natural gas and carbon tax cost of over $2 million dollars, this can represent an annual savings of more than $700K.

As our many international clients have discovered, when SubCom is used effectively, it can create monetary savings and environmental benefits for years to come.



Design Benefits

Save on Fuel Costs
Save on Additional Process Costs
Save on Maintenance Costs
Save on Manpower Costs
Recover Clean Water for Reuse
Be Safe


How SubCom Works

Our patents and technologies have developed over the years, as we design systems and gather field data, in order to meet the challenges and needs of our clients.

With each new challenge we have found ways to apply submerged combustion to new applications. The results have been - in some cases remarkable - and in all cases rewarding. 

Submerged combustion is more environmentally-responsible as it reduces energy consumption and can provide energy efficiencies approaching 100%. Watch our SubCom presentation for an overview of the projects we have designed and installed. We will illustrate how the application of submerged combustion makes it possible to dramatically reduce greenhouse gases and use combustion processes more economically and more responsibly.

The Process

The SubCom process is a highly energy efficient method of heating or evaporating large quantities of liquids, often dirty or corrosive. This is accomplished by forcing the products of combustion directly through the liquid. The heat transfer occurs by direct contact between the high temperature (>2,500°F / 1,375°C) gas bubbles as they rise through the solution. This means there are no heat transfer surfaces to foul. As the gas bubbles cool, they continue to transfer energy in the form of latent heat of condensation as water of combustion condenses into the liquid. When the gases escape at the liquid surface, they exit at or near the same temperature as the heated solution, and at atmospheric pressure. With conventional methods the heat exchange is indirect and the products of combustion are exhausted, wastefully, into the atmosphere at high temperatures.

Submerged combustion is used to heat or evaporate slurries and liquids, with thermal efficiencies that can exceed 99%. Other more traditional industrial liquid heating systems typically achieve less than 85% thermal efficiency. SubCom systems operate at atmospheric pressure, and are inherently safe. Fully automated, they are very well suited for use in remote locations without an operator in attendance.

The patented design features ensure there is very little maintenance required. This further enhances the cost efficiencies and return on investment of these systems.



The Combustion Challenge

The patented SubCom technology was developed to handle clean, dirty, corrosive, and scaling fluids for heating and evaporative processes. Suitable for unattended operation in remote locations, these systems do not require a certified boiler operator. They offer a cost effective alternative to boiler / heat exchanger systems and direct steam injection in many cases.

While the use of fossil fuels has helped industrialization enormously, this has resulted in an increase of CO2 in the Earth's atmosphere. It is important to note that we require these industries to support our modern economies. The challenge of many industries is the requirement to heat large volumes of water or aqueous solutions efficiently. This usually requires a combustion process. With our experience over the years of designing and fabricating combustion systems, we found there is one combustion process capable of heating large volumes of industrial solutions and reducing GHG emissions. That process is Submerged Combustion.



Applied Knowledge and Experience

Necessity drives innovation and nothing is better for proving and perfecting engineering designs than field experience.

SubCom was selected by our clients because it offers technical and economic advantages over other technologies. Through practical application and controlled development in our own facilities, we developed proprietary designs that make it possible to use submerged combustion in many new and challenging applications. Continuous product developments over the years have made SubCom technology a highly efficient and greener industrial solution for process heating applications.