Daniel Rocha <danieldi...@gmail.com> wrote: No, you have to know the flux, the distribution of speeds. An anemometer is > not enough. >
It is enough, and this is how all HVAC engineers measure the heat flow with air cooling and heating. This web site and video show the method: http://www.trutechtools.com/Measuring-Airlfow-with-a-Hot-Wire-Anemometer_c_1001.html > But, this is quite odd, this is a quite invasive procedure. > This is not a bit odd, unusually or invasive. HVAC engineers do it thousands of times a day everywhere in the U.S. > Going to the roof, bypassing security, by laying what their purposes are. > Why would they lie? They could easily get permission. They would hire an HVAC contractor to do the actual measurement. Contractors go on roofs all the time. Just call the landlord and tell him you will have someone check the vent next Tuesday morning. People do that all the time. Do it several times, in several days, during several months to have an idea > of what is happening. > Once would suffice. It not possible they would confuse 20 kW with 1000 kW. - Jed
