2011 ASHRAE Handbook - Heating, Ventilating, and

This instruction manual contains over 60 chapters protecting a large variety of amenities and issues, and is written to assist engineers layout and use apparatus and platforms defined in different instruction manual volumes. ASHRAE Technical Committees have revised approximately each bankruptcy to hide present specifications, know-how, and layout perform.

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There are can be changes in the building’s occupancy or design strategies, outdated equipment, degraded equipment efficiency, occupant discomfort, and IAQ problems that can initiate the need for recommissioning. Typical recommissioning activities are shown in Table 8. Commissioning is also an important element in existing buildings. USGBC (2009), LEED f o r Existing Buildings & Operation Maintenance awards up to six credits for commissioning systems in existing buildings in the Energy and Atmosphere (EA) section HVAC systems modifications can vary from minor modification to HVAC systems up to complete reconstruction of all or part of building HVAC system.

Doors of this type are balanced, with equal pressure in opposite directions on the panels on either side of the central pivot, making operation relatively simple and requiring no special effort to turn. Their gasketing also provides closure at all times. Two-door vestibules are acceptable for the loading dock, assuming the doors are properly spaced to allow them to be operated independently and with one door to the vestibule always closed, and sufficient heat is provided in the space between the doors.

The most common normalization factor is the gross floor area. Energy benchmarking is less accurate then other energy analysis methods, but can provide a good overall picture of relative energy use. Relative energy use is commonly expressed by the energy utilization index (EUI), which is the energy use per unit area per year. Typically, EUI defined in terms of Btu/ft2 per year. In some cases, the user is interested in energy cost benchmarking, which is known as the cost utilization index (CUI). CUI units are $/ft2 per year.

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