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.