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Housekeeping is the management and routine support activities of running and maintaining an organized physical institution occupied or used by people, like a house, ship, hospital or factory, such as cleaning, tidying/organizing, cooking, shopping, and bill payment.
They clean out the bins in the different compartments, and perform other cleaning activities such as hoovering, mopping and deep cleaning." [ 14 ] 9123.1 - window cleaner : "Window cleaners use cleaning tools such as sponges and detergents to clean windows, mirrors and other glass surfaces of buildings, both on the interior and exterior.
In the great houses of the eighteenth, nineteenth and early twentieth centuries, the housekeeper could be a woman of considerable power in the domestic arena. [citation needed] The housekeeper of times past had her room (or rooms) cleaned by junior staff, her meals prepared and laundry taken care of, and with the butler presided over dinner in the Servants' Hall.
An HVAC system that has a stable supply-air temperature, and varies the air flow rate to meet the temperature requirements. Compared to constant air volume systems, these systems conserve energy through lower fan speeds during times of lower temperature control demand. Most new commercial buildings have VAV systems.
Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.
The efficiency of the cleaning system allows the unit to have a much higher gas to cloth ratio (or volumetric throughput of gas per unit area of filter) than shaking and reverse air bag filters. [10] This kind of filter thus requires a smaller area to admit the same volume of air.
Displacement ventilation systems supply air directly to the occupied zone.The air is supplied at low velocities to cause minimal induction and mixing. This system is used for ventilation and cooling of large high spaces, such as auditorium and atria, where energy may be saved if only the occupied zone is treated rather than trying to control the conditions in the entire space.
Since indoor air pollutants can adversely affect human health, it is important to have real-time indoor air quality assessment/monitoring system that can help not only in the improvement of indoor air quality but also help in detection of leaks, spills in a work environment and boost energy efficiency of buildings by providing real-time ...