Industrial Heating with High Temperature Heating & Ventilating (HTHV)

To heat an industrial facility, it is critical that the system is designed with worker safety and lowered operational costs and energy consumption top of mind.
 
HTHV is a technology classification created by the Department of Energy (DOE), producing a heating system capable of a discharge temperature greater than or equal to 150°F and a temperature rise greater than or equal to 140°F. HTHV heating systems are capable of effectively heating and ventilating both large commercial and industrial spaces, reducing energy consumption and increasing energy savings by 20-70% depending on the building, location, application, and installation. Most importantly, by using 100% outside air and direct-fired technologies, HTHV products provide a ventilation process that delivers superior indoor air quality for employees/building occupants.

Direct-fired 100% outside air technologies

Temperature stratification is a major issue in all high-bay industrial applications in the wintertime and must be addressed through the proper selection of destratification technologies. A study published by the Department of Energy titled Field Study of High Efficiency Gas Heaters looked at the energy savings accomplished with HTHV 100% outside air direct-fired technologies. The report states: “As evidenced by the temperature readings near the floor and ceiling, the new (Direct-fired 100% Outside Air HTHV) gas heaters reduced stratification, maintained more uniform temperature distribution, and consumed 20% less natural gas.”

HTHV with high velocity blowers provides this necessary destratification as shown in this technology animation.

Continuous or intermittent control options and heating and ventilating in a single unit

Direct-fired 100% outside air systems provide controls to operate either continuously or intermittently based on occupancy schedule, process conditions, pressure, or any number of other control requirements. There are actually three primary modes of operation for these technologies:

  1. Ventilation/Exhaust Replenishment
  2. Space Heat & Ventilation
  3. Space Heat

HTHV provides pressure control design flexibility

There are many different ways to pressure control a building. 100% outside air direct-fired technologies are completely capable of being controlled at positive, negative, or neutral pressure. There is significant debate on what is the “best” pressure control methodology for a building in the winter. Negative reduces risk of condensation, and positive decreases draftiness. However, both methods increase energy consumption over neutral. The HTHV technologies have become the gold standard for energy-efficient industrial warehouse heating in North America over the past 20 years. 

These technologies are now being launched into the broader commercial heating and ventilating market because of their energy efficiency and low installed costs. The 100% outdoor air introduced through ANSI Z83.4 technology is designed and installed to improve the indoor air and environmental quality of the facility. Any level of required ventilation, including ASHRAE 62.1 levels, can be achieved and maintained through these technologies. 

Many offerings include optional MERV13 filters added to the inlet air of this device, further improving indoor air quality. ANSI Z83.4 equipment can be installed with a minimum amount of ductwork, providing an efficient and cost-effective installation. Additionally, the technology can be installed indoors or outdoors or in horizontal or vertical configurations, permitting added flexibility while always providing 100% fresh outside air. 

Come visit and ask us anything.

Want to see if HTHV heating would work for your building? Reach out to Thomas Little, our customer success representative, and he can help answer any questions.