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A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.
There are two major systems to classify ductwork airtightness, one based on European standards, the other based on ASHRAE standard 90.1-2010.Both are based on the leakage airflow rate at a given ductwork pressure divided by the product of the ductwork surface area and the same ductwork pressure raised to the power 0.65.
The "Sweet Bed" was rolled out throughout the ibis brands, the first bed entirely designed by a hotel group. [8] The mattresses, pillows and digital access were upgraded. [9] The lobby was turned into a living space. [10] Following this restructure, the ibis megabrand became the leading hotel operator in Europe in 2013 with 1,277 hotels. [11]
Pages in category "Hotel chains in Spain" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. B. Bahia Principe; E.
Warm air systems distribute the heated air through ductwork systems of supply and return air through metal or fiberglass ducts. Many systems use the same ducts to distribute air cooled by an evaporator coil for air conditioning. The air supply is normally filtered through air filters [dubious – discuss] to remove dust and pollen particles. [15]
The company is one of Spain's largest domestic operators of holiday resorts [2] and the 17th biggest hotel chain worldwide. [3] Domestically in Spain the company is the market leader in both resort and urban hotels. [4] Currently the hotel chain operates 374 hotels in 40 countries on 4 continents under the brands Meliá, Gran Meliá, ME by ...
A new law requiring hotels and car hire firms to send customer data to the government starts on Monday. Spain hotel check-in delay fears as new data rules begin Skip to main content
Downstream of the air handler, the supply air trunk duct will commonly fork, providing air to many individual air outlets such as diffusers, grilles, and registers. When the system is designed with a main duct branching into many subsidiary branch ducts, fittings called take-offs allow a small portion of the flow in the main duct to be diverted ...