As HVACR technicians, assessing whether the furnace we’re servicing is working efficiently is critical to understanding the overall health of the HVAC system — and to the success of our service call.

Combustion analysis is all about location. Key measurements are taken in the flue gas after the heat exchanger and prior to any dilution air entering the flue. Typically, the ideal location to measure ...

While peak efficiency and ensuring system components are installed and working properly, safety is the primary reason to conduct combustion analysis. The phrase is a term for assessing a gas appliance ...

TESTING EVERY FLAME-fired appliance you come into contact with is a move in the right direction. We discussed why you need to do this in last month’s column (“Do you test your gas appliances for CO?” ...

It's important to keep in mind that the combustion process occurs in a very brief period of time. Due to a variety of conditions that include mixture density, homogeneity, temperature, fuel ...

Inlet unstart is a particularly critical issue associated with scramjets. That is the upstream displacement or disgorging of the original inlet shock system. Large flow spillage can be caused by the ...