Heating Ventilating and Air Conditioning

ShareThoughts2021-06-29T08:59:10+00:00

Heating Ventilating and Air Conditioning (HVAC) HVAC (pronounced either "H-V-A-C" or "aitch-vak") is an acronym that stands for the closely related functions of "Heating, Ventilating, and Air Conditioning"- the technology of indoor environmental comfort. HVAC system design is a major sub discipline 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 ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is particularly important in the design of medium to large industrial and office [...]

CE Marking of Nasal Cleaner

2025-01-23T05:47:21+00:00

CE Marking of NOSE CLEANER under Regulation EU 2017/745 NOSE CLEANER (Regulation (EU) 2017/745) Class: Class IIa, Rule 5: Invasive device: All invasive devices with respect to body orifices, other than surgically invasive devices, intended for connection to a Class IIa, Class IIb or Class III active device, are classified as class IIa NOSE CLEANER Capsules Class IIa, Rule 21: Devices that are composed of substances or of combinations of substances that are intended to be introduced into the human body via a body orifice or applied to the skin and that are absorbed by or locally dispersed [...]

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