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HVAC (heating, ventilation, and air conditioning) is a major sub discipline 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. The discipline of HVAC includes a large number of specialized terms and acronyms, many ...
HVAC stands for "Heating, Ventilation and Air Conditioning". Subcategories. This category has the following 8 subcategories, out of 8 total. ... additional terms may ...
HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation as HVAC&R or HVACR, or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers).
These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
DTG – Date-Time Group, a numeric code denoting the time and date of a message. Dual-cool or Double-trouble – A Marine that possesses both the parachutist and diver badges, usually associated with the Reconnaissance community. [55] Dummy Cord – Lanyard or tether used to secure a piece of equipment to an anchor to prevent losing it.
It looks like Tulip trusts her new mom and she looks so happy in her palm! Commenters were happy to witness this milestone moment. @Christine Arnold-Sch shared, "That little face! Love the way she ...
'Tis the season of giving, but it's also the season of savings, especially at Walmart. The retailer's early Black Friday sales have been dropping all week and the deals just keep getting better ...
The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA; pronounced 'Smack'-'Nah') is an international trade association with more than 4,500 contributing contractor members [1] in 103 chapters [2] throughout the United States, Canada, Australia and Brazil.