The architecture of these systems typically allows for additional burner efficiency improvements that can be provided with flue gas oxygen trim and VFD combustion fan motor control. Oxygen trim ...

Mold in your air ducts isn’t just gross—it can make your home smell musty, cause respiratory problems, and exacerbate allergies. Since your HVAC system circulates air throughout your home, any ...

Refreshed in 2023 for model year 2024, the internal combustion Porsche Cayenne is gearing up for a second update in 2026 for model year 2027 ...

Air duct cleaning typically costs $270 to $500, with an average of $388 and a max of $1,000 or more. The cost depends on number of vents, duct type and location.

If you're concerned about reducing allergens in your home, improving your HVAC's efficiency and maintaining good indoor air quality, cleaning your air ducts might be the answer—but is it really ...

Figure 4. Transition duct cracking before repair. The crews also repaired a crack in a generator lubricating oil line, whose discovery came from inspections apart from those of the duct and stack.

A cylinder combustion simulation model was established for a two-stroke aviation piston engine used in a small unmanned aerial vehicle. The influence of different ignition system parameters on the ...

Use fireplaces to offer home buyers comfort, energy efficiency and good indoor air quality. November 23, 2008. In today's tough market, it's smart to take advantage of any opportunity to gain an edge ...

A recently granted patent (Publication Number: US11774310B2) describes an assembly for measuring air flow in the air intake duct of an internal combustion engine.

When the process and plant engineers at a major oil sands refinery in the province of Alberta, Canada, needed to replace their boiler system to upgrade its efficiency and thereby reduce its fuel costs ...