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Commercial refrigeration. Refrigeration is any of various types of cooling of a space, substance, or system to lower and/or maintain its temperature below the ambient one (while the removed heat is ejected to a place of higher temperature). [1] [2] Refrigeration is an artificial, or human-made, cooling method. [1] [2]
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).
Novar (also Novar Controls) is a manufacturing company based in Cleveland, Ohio, United States, which develops technology to centrally control and manage HVAC, refrigeration and lighting systems for businesses, using direct digital control and energy management. More than 40,000 sites worldwide use Novar technology, and more than 10,000 of ...
Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]
Carel Industries is an Italian multinational company that designs, manufactures, and markets hardware and software for managing air conditioning, refrigeration, humidification, and evaporative cooling systems. [3] [4] Founded in 1973 in Brugine, Padua, Italy, as of 2023 it operates 15 production sites and employs over 2,500 people.
The refrigeration process uses a mixture of two isotopes of helium: helium-3 and helium-4.When cooled below approximately 870 millikelvins, the mixture undergoes spontaneous phase separation to form a 3 He-rich phase (the concentrated phase) and a 3 He-poor phase (the dilute phase).
The four volumes are Fundamentals, Refrigeration, HVAC Applications ("Applications"), and HVAC Systems and Equipment ("Systems and Equipment"). Members of ASHRAE receive the current volume, in both print and CD-ROM form, each year as a basic membership benefit.
Trane is a manufacturer of heating, ventilation, and air conditioning (HVAC) systems, along with building management systems and controls. The company is a subsidiary of Trane Technologies, a company focused on manufacturing HVAC and refrigeration systems.