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Objectives. Review/Learn about HVAC Configurations Describing systems and processes in the psychrometric chart Analyze processes in AHU and buildings Finish examples from the text book. Single zone CAV. Single zone multi-room CAV. Multi zone CAV with Reheater. Duct reheat unit.
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Objectives • Review/Learn about HVAC Configurations Describing systems and processes in the psychrometric chart • Analyze processes in AHU and buildings • Finish examples from the text book
CAV Dedicated Outdoor Air System (DOAS) with Fan Coil Units Exhaust 100%OA For ventilation and humidity control Fan coil units for heating and cooling
Fan Coil Units Fan coil Units can be combined with mechanical ventilation or rely on infiltration
VAV Dedicated Outdoor Air System (DOAS) with occupancy sensors Exhaust 100%OA VAV box VAV box CO2 CO2 For ventilation and humidity control Fan coil units for heating and cooling
Fan Terminal Units Same as fan coil Can be with or without recirculation
HVAC Systems Multi zone Single zone All Hydroinic that relay on infiltration VAV CAV CAV VAV With and without humidity control With and without reheaters Dual duct Dual duct With reheaters DOAS with fan coils DOAS with fan coils This is not the complete list !
Single-Zone Systems Zone – any space with a thermostat
Heart recovery by Air-to-air and air-water-air heat exchanger
Summary of HVAC Systems • Show HVAC processes on a psychrometric chart • Draw condition lines • Define sensible heat ratio • Draw HVAC processes for real buildings • Single zone • Multiple zone
Reading assignmentsrelated to the HVAC systemsChapters 7 & 8andHandout Section on the course website