Mechanical equipment should be designed on the basis of the entire building as a system. The design of mechanical equipment should consider all the interrelated building components and systems while addressing indoor air quality, energy consumption, and environmental benefit. The design of mechanical equipment should be an integral part of the design approach and not an after-thougt. Design of Mechanical equipment should addressed in schematics and preliminary design stage, and then subsequent decisions should be revised, updated, and incorporated in the final design.
In a facility, mechanical and ventilation systems have a significant effect on the health, comfort, and productivity of occupants. Improper design lead to sick buildings -- Issues like user discomfort, improper ventilation, and poor indoor air quality are linked to HVAC system design and operation. and can be improved by better mechanical and ventilation systems.
In addition to proper design and selection of equipment, It is also essential to implement well-thought-out commissioning processes and routine preventative maintenance programs.
Mechanical system accounts for a significant amount of energy consumption in a facility. According to DOE HVAC accounts for 40% to 60% of the energy used in U.S. commercial and residential buildings. So design of more energy-efficient mechanical systems represents a great opportunity for energy savings.
Energy Consumption by Household Appliances
According to U.S. Department of Energy -- A Consumers Guide to Energy Efficiency and Renewable Energy --
In a typical U.S. home, the appliances and home electronics are responsible for about 20 percent of the energy bill.
For Energy Consumption by appliance -- see
Typical Wattages of Various Appliances --Alphabetical Listing by Appliance Name -- in the section on appliances-fixtures.
beginning of mechanical
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