To obtain the heat content (enthalpy), it would be necessary to know both the pressure and temperature at this point and then use a thermal dynamic superheat table for this specific refrigerant.
Get insight from renowned HVACR professor at Ferris State University and NEWS columnist, John Tomczyk, in this 44-page eBook covering a wide range of service and troubleshooting topics.
Get insight from renowned HVACR professor at Ferris State University and NEWS columnist, John Tomczyk, in this 48-page eBook covering a wide range of service and troubleshooting topics.
Bob and Tim are at a job where a customer has damaged a refrigerant line on a heat pump. When they arrive, the line is still blowing a slight amount of vapor from the split in the line.
I live and work in Florida where most of our fuel-burning appliances are 80 percent efficient with open combustion that utilizes air and oxygen from the space for combustion.
First, a bit of history… This facility, a small office complex, was built a little more than a decade ago, and the required carbon monoxide safety monitor in the equipment room was disabled at the beginning of the first heating season because there was an ongoing problem with it being activated from time to time.
Restrictive, undersized filter selection generally ranks high on the list causing underperforming HVAC systems. There have been effective electronic air cleaners around for many years, but for our conversation within this article, we will focus on media or fabric material filtering.
Bob and Tim are on a service call with an aggravated customer. The customer explained to them three different service companies had been out to her house this summer and all of them told her that she had a leak they could not find.
You might wonder, “Why can’t I just use a duct calculator and tape measure to identify duct repairs?” You could, but that means making a lot of assumptions and wasting valuable time.
