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.
1.BTU - British Thermal Unit: The unit of heat in the imperial system - the BTU -. is the amount of heat required to raise the temperature of one pound of water through 1oF (58.5 deg F - 59.5 deg F) at sea level (30 inches of mercury).. 1 Btu (British thermal unit) = 1055.06 J. = 107.6 kpm.