At HTI, we are passionate about the business of heat and mass transfer and have been so since our inception in 1996.  Our research and development has been focused on the various instabilities created by heat and high velocity mass flows.  We have perfected the technology for organizing these flows into one highly efficient oscillating stream and directing this stream onto materials for the benefit of commercial, industrial and residential processes.  Whether the heat source is created by fossil fuels or electricity, the resulting air is applied to the process in a highly organized, oscillating or charged fashion.  As a result we have developed products and been awarded 3 patents (and 1 pending) in advanced drying, heating, and pressure wave technologies for use in commercial applications. Under the trademark Spectra HE™ (High Efficiency).



To understand our technology let’s define some terms:

The transition of thermal energy or simply heat from a hotter object to a cooler object.
The process of transferring mass (water, water vapor, solvent, solvent vapor, etc.) from one media to another (from solids to air, from coated materials to air, etc.)
A reversible organized pressure wave.
Spectra HE™ (High Efficiency) Technology

All of our products are based on advanced technologies developed in-house since 1996. HTI has spent more than 13 years perfecting the various techniques and methods of heat transfer – pulse combustion, pulse heating, declarative combustion and other technologies – which result in an umbrella technology which we have named Spectra HE™.

This endeavor has been undertaken because of the significant operating and environmental benefits that are realized from this technology and our products.

At the core of this technology is the application of HTI’s proprietary, patented understanding and knowledge of heat and mass transfer. Here is a technological snapshot of our products:



Spectra HE™ Ultra Drying System

Using the Spectra HE™ Technology we have developed a product that addresses the needs of a variety of applications.  The HTI Spectra HE™ Ultra Drying System is an electrically powered system for the printing and coating industry.  In production, this system significantly reduces energy consumption, increases press throughput at the same or lower production air temperature.  Spectra HE™ Ultra Drying System can be adapted to fit any coating, converting, printing and narrow web flexographic equipment.

controlPanelHeat Source: Independent, electrically generated heat or hot air from combustion of fossil fuels or no heat – we can dry with ambient air for temperature sensitive applications

Thermal Input: 0-100 kW per section

Operating Benefits:

  • Energy Consumption Reduction – up to 70% depending on the application
  • Increased Throughput 54-80%
  • Production Cost Savings
  • Low maintenance
  • Compact Size



Spectra HE™ Pulse Dryers

Spectra HE™ Pulse Dryers are based on HTI’s patented pulse combustion technology.

Heat Source: Fossil, refuse gaseous or liquid fuels, e.g. natural gas, propane, fuel oils, refuse fuels

Thermal Input: 150,000 BTU/hr – 6,000,000 BTU/hr (50 kW – 2,000 kW)

Operating Benefits:

  • Energy Consumption Reduction – 10% to 50%
  • Increased Throughput
  • Production Cost Savings
  • Low Maintenance
  • Compact Size of Equipment



Spectra HE™ Pulse Burners and Heat Exchangers

The Spectra HE™ Pulse Burner and Spectra HE™ Pulse Dryer are powered by fossil fuels.  Both systems offer accelerated heat transfer (direct and indirect), low NOx and CO emissions, advanced mixing and a compact heat exchanger.  In addition, we offer engineering services so that these techniques and technologies can be applied to various commercial, industrial and residential applications and processes.  We have worked with several major manufactures to improve their production processes and/or products.  If you have a manufacturing process or a product that involves heating, drying, incineration or other heat transfer processes, we may be able to apply our technology to increase your bottom line either by reducing expenses, increasing performance and line efficiency.

A further benefit will be reductions in green house gas emissions at a time when these issues are important to the world we live in.

Operating Benefits:

  • Self – aspiration
  • Valve-less design
  • 1:3 turndown ratio
  • Ultra Low CO (0 – 10 ppm) emissions
  • Low NOx (less than 10 ppm) emissions
  • Low maintenance

All of our drying and combustion systems use a unique, patented process which “charges the air” to achieve these results. The equipment is compact, cost efficient and easy to operate. Since there is only one moving part, it is highly reliable and will not reduce uptime in a manufacturing environment. Our equipment can be retrofitted to existing production lines or processes. Our pulse heat exchangers could be a core component for a residential or commercial water heater.


  • Paper
  • Textiles
  • Cardboard
  • Food
  • Custom Designed Processes that involve drying
  • Paper/Tissue
  • Mineral drying – Kaolin drying
  • Cement
  • Boilers Cleaning
  • Heat Exchangers for boilers and water heaters


  • Paper Manufacturing
  • HVAC
  • Textile Manufacturing
  • Food Processing
  • Waste Energy Systems
  • Municipalities and Public Works
  • Cement Manufacturing
  • Incineration



Spectra HE™ IDRS

Another product line is used for the cleaning of production surfaces for boilers or pollution control equipment.  In this application the Spectra HE™ Technology is used to direct heat and sound like a mini “sonic boom” to clean deposits formed on the heat transfer surfaces of boilers.  This equipment operates using solid fuels.  We call this — Spectra HE™ IDRS.  This established technology was created and patented by HTI.

This technology was derived from our patented pulse combustion technology and has several applications for the removal of deposits from various heat transfer surfaces of various boilers or environmental pollution control type of equipment.

Fuel Source: natural gas, propane

Fuel Consumption: 50-100 scf/hr

Air Source: could use plant air or supplied source of air, such as regenerative blower

Operating Benefits:

  • Field adjustable to meet the requirements of a specific installation or site or can be portable
  • Low Cost
  • Low Maintenance
  • Fully Unattended Operation

The Spectra High Efficiency Technology and its products are available today as an addition to or replacement of your current operating environment.

Contact us if you have a question, would like a copy of our newsletter or to discuss a potential business application.