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Section 608 (together with Section 609, which covers motor vehicles) of the Clean Air Act serves as the main form of occupational licensure for technicians in the heating, ventilation, and air conditioning (HVAC) industry in the United States. [1]
The Maryland Department of Labor (called the Department of Labor, Licensing, and Regulation until 2019 [1]) is a government agency in the U.S. state of Maryland. [2] It is headquartered at 1100 North Eutaw Street in Baltimore .
To distinguish various forms of regulation, there are three forms of government regulation of occupations: Licensing: Licensing refers to situations in which it is unlawful to carry out a specified range of activities for pay without first having obtained a license. This confirms that the license holder meets prescribed standards of competence.
A master miller displays an antique journeyman's licence in Meissen, 1981. Journeyman papers, or a journeyman's licence, is a certification granted to tradesmen upon completion of an apprenticeship. The certificate verifies that the worker is skilled in their trade. A tradesmen who has received this certification is referred to as a journeyman ...
A journeyman is a worker, skilled in a given building trade or craft, who has successfully completed an official apprenticeship qualification. Journeymen are considered competent and authorized to work in that field as a fully qualified employee. They earn their license by education, supervised experience and examination. [1]
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).
This is partly because ice forms on the outdoor unit's heat exchanger coil, which blocks air flow over the coil. To compensate for this, the heat pump system must temporarily switch back into the regular air conditioning mode to switch the outdoor evaporator coil back to the condenser coil, to heat up and defrost. Therefore, some heat pump ...
Maryland (US: / ˈ m ɛr ɪ l ə n d / ⓘ MERR-il-ənd) [b] is a state in the Northern,Mid-Atlantic or South region of the United States. [9] [10] It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, Delaware and the Atlantic Ocean to its east, and the national capital and federal district of Washington, D.C. to the southwest.