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This month's B2B will focus on a new 12-classroom building addition, each room with its own closed loop ground source heat pump (GSHP) unit. The building will have 12 GSHP for classrooms, 2 GSHP for administration, and 2 GSHP for common areas. The units have been standardized at 3-tons cooling, with MERV 11 60% efficiency with no supplemental electric heater. The room sound level will be 30NC and space temperature at 68°F +/- 2°F and 30% rh (heating season) and 74°F +/- 2°F and 60% maximum rh (cooling season). Other areas will have 35NC sound level.
The ground source system consists of two 50-ton closed loop wells piped in parallel with the building's 16 GSHP units using 2-end suction pumps each sized for 100% capacity. The building has general exhaust systems to accommodate the ventilation requirements.
The design engineer is directed to 2015 ASHRAE Handbook - HVAC Applications, chapter 7 (Educational Facilities) and chapter 34 (Geothermal Energy) along with chapters 36 through 43 (Building Operation and Management), and chapter 59 (HVAC Security) for design guidelines.
Project delivery method shall be integrated project delivery (IPD) based on 2015 ASHRAE Handbook - HVAC Applications chapter 58 (Integrated Building Design). The IPD team shall include the college president, campus operations manager, and a project manager from the school's construction management group. The team should also include the...