TABLE OF CONTENTS - The Professional Green Building Council

Theme C: Education and Market Transformation2) Air Temperature in the classroomsThe air temperatures of the classrooms are simulated to show the effect of theground cooling on room air temperature on the hottest day (22 nd June) and thecoldest day (18 th December) of a year. Results show that by adding GCHS to thebuilding’s ventilation system, significant temperature drop and rise are achieved insummer and winter respectively. GCHS Model II has a better performance thanGCHS Model I. The average extreme hot day temperature drop comparing withbase case in the classrooms is 1.8°C for GCHS Model I and 2.4°C for GCHSModel II; the average extreme cold day temperature rise comparing with base casein the classrooms is 2.1°C for GCHS Model I and 2.8°C for GCHS Model II.Charts 07 and 08 shows the indoor air temperature in one of the classrooms:°C3837363534333231302928Indoor Air Temperature on 22nd June - Room20 2 4 6 8 10 12 14 16 18 20 22Basecase GCHS Model I GCHS Model II Ext. Temp°C121086420-2-4-6-8-10-12Indoor Air Temperature on 18th December - Room20 2 4 6 8 10 12 14 16 18 20 22Basecase GCHS Model I GCHS Model II Ext. TempCharts 07 and 08: Indoor air temperature in Room 2.3) Heating and Cooling LoadDue to its cooling effect in summer and heating effect in winter, the GCHS is ableto save on the total heating and cooling energy consumption of the building. Theyear total heating and cooling load of the GCHS models are shown in Chart 09with comparison to the base case:635