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.
BTU- British Thermal Unit. Used for both heating and cooling, BTU is a measure of the heat given off when fuel is combusted. One BTU is equal to the heat given off by a wooden match. A ton is a unit of measure for cooling capacity. One ton = 12,000 BTUs per hour. Both units measure heat.