Page 374 - Sustainable On-Site CHP Systems Design, Construction, and Operations

Optimal Sizing Using Computer Simulations—New School 347

Data
General
Location NYC area, NY
2
Floor area (ft ) 229,700
Above grade floors Varies (3, 2, and 1 depending on duty)
Below grade floors 0
% Conditioned and lit 100
Buildings/Wings
2
Classrooms Three wings, three and two story (98,000 ft )
2
Auditorium One wing (12,600 ft )
2
Gymnasiums Two wings (31,900 ft )
2
Cafeteria One wing (14,400 ft )
2
Office/admin One annex (5,400 ft )
2
Central utility room One annex (5,400 ft )
Common (wings link) 62,000 ft 2
Floor-to-floor height (ft) 13 (typical), in gymnasiums, auditorium, etc. is higher
Floor-to-ceiling height (ft) 9 (typical)
Envelope
Roof Massive, R-25
Walls CMU grouted, 2 in, EIFS, 30% abs, U = 0.1 (Btu/h-ft -°F)
2
2
Foundation Slab, U = 0.03 (Btu/h-ft -°F)
2
Windows Double glazing low E, U = 0.416 (Btu/h-ft -°F), SHGC = 0.43
Windows-wall ratio (%) 16
Exterior and interior shades None
TABLE 21-1 Description of Large School Campus

Data
Schedules
Operation schedule Per school schedules
Secondary Systems
Classrooms Four-pipe fan coils
Auditorium Single zone
Gymnasiums Single zone
Cafeteria Single zone
Office/admin Variable air volume with hot water reheats
Central utility room Single zone
Common (wings link) Variable air volume with hot water reheats

TABLE 21-2 Description of Large School Schedules and Systems