Unitary System and VAV using HVACTemplate Inputs[LINK]

Overview[LINK]

• Rectangular single story building with 5 occupied zones and a ceiling plenum
• Packaged DX cooling with gas heat serving one zone
• VAV with reheat and return plenum serving the other 4 zones
• All equipment autosized using summer and winter design days

Details of the Exercise[LINK]

Building Description[LINK]

• Single floor rectangular building 30.5 m (100 ft) by 15.2 m (50 ft) by 3m (10 ft) high.
• Building is oriented with the long axis running east-west.
• Floor Area 463.6 m2 (5000 ft2).
• 5 occupied zones - 4 exterior, 1 interior, zone height 2.4 m (8 ft). Exterior zone depth is 3.7 m (12 ft).
• 1 plenum zone 0.6 m (2 ft) high.
• Windows on all 4 facades
• South and north facades have glass doors.
• South facing glass is shaded by overhangs.
• Walls are wood shingle over plywood, insulation, and gypsum board.
• Roof is gravel built up roof with mineral board insulation and plywood sheathing.
• Floor slab is 0.1 m (4 in) heavy concrete.
• Windows and glass doors are double pane Low-e clear glass with argon gap.
• Window to wall ratio is approximately 0.3.
• Lighting is 16 W/m2 (1.5 W/ft2).
• Office electric equipment is 10.8 W/m2 (1.0 W/ft2).
• 1 occupant per 9.3 m2 (100 ft2) of floor area.
• Infiltration is 0.25 air changes per hour (always on, proportional to wind speed).
• * Refers to specific glass type included in the EnergyPlus datasets directory
• (WindowGlassMaterials.idf)

Space Conditioning[LINK]

Heating setpoints:21.1C (70F) occupied, 12.8C (55F) unoccupied

Cooling setpoints:23.9C (75F) occupied, 40.0C (104F, system off) unoccupied

Plenum zone not controlled

Environment[LINK]

Location:Chicago, Illinois, USA

Design Days:Summer

Winter

Annual Simulation Period:Jan 1 - Dec 31

Ground Temperatures:from Slab preprocessor (20.4 to 23.0 C)