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.
January 6, 2017. Vapor combustion units (VCU) also called enclosed combustion devices or enclosed flares are widely used in oil and gas operations to control vent gas VOC and methane emissions. VCUs are a good alternative control device when a vapor recovery unit (VRU) is not feasible for the application.