One of the most common myths about nodules is the diagnosis itself! Usually doctorâs donât have the necessary equipment (stroboscopy) to diagnose vocal problems. So all problems are called nodules. Every singer has a colleague who had ânodulesâ for this reason.
Glossary of HVAC terms. HVAC (heating, ventilation, and air conditioning) is a major subdiscipline of mechanical engineering. The goal of HVAC design is to balance indoor environmental comfort with other factors such as installation cost, ease of maintenance, and energy efficiency.
HVAC is an abbreviation for Heating, Ventilation and Air Conditioning. HVAC systems are the main mechanical infrastructure of a building and provide climate control functions. An HVAC system can range from a compact unit placed in a window sill to a multisystem unit that is installed on a roof or in a basement. HVAC systems are typically the most costly elements of construction.