An estimator or technician will take measurements, check existing ductwork and other systems, and determine the right size tonnage for the system you’ll need based on your home's size and the climate. When To Replace Your Central Air Conditioning System Sometimes it makes more sense to replace...
There are generally two types of stethoscopes: the traditional acoustic stethoscope and electronic stethoscope. The acoustic stethoscope operates on the transmission of sound from the chest piece, via air-filled hollow tubes, to the listener’s ears. The chest piece usually consists of two parts th...
Jacob Guest is an HVAC/R assistant professor at Ferris State University in Big Rapids, Michigan. He has a variety of experience in the heating, ventilation, and air conditioning/refrigeration industry, ranging from a service technician and environmental test chamber tester to an engineering lab mana...
Transboundary pollution is an important factor in the deterioration of the air quality in the Beijing–Tianjin–Hebei region. Atmospheric pollution can easily cross the border between regions, which is different from other types of environmental pollution. On the basis of the third generation WRF-CAMx...