Objectives Review/Learn about HVAC Configurations Describing systems and processes in the...
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Transcript of Objectives Review/Learn about HVAC Configurations Describing systems and processes in the...
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
Multizone CAV Dual Duct System
Dual duct terminal (Mixing box)
Single zone VAV
Multi zone VAV
VAV box
Multi zone VAV with Reheater
CAV Dedicated Outdoor Air System (DOAS)
with Fan Coil Units
100%OA Exhaust
Fan coil units for heating and cooling
For ventilation and humidity control
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
100%OA Exhaust
Fan coil units for heating and cooling
For ventilation and humidity control
VAV box VAV box
CO2 CO2
Fan Terminal Units Same as fan coil
Can be with or without recirculation
HVAC Systems
Single zone Multi zone
VAVCAV VAV CAVAll Hydroinicthat relay on infiltration
With and without reheaters
DOAS with fan coils
With reheaters
Dual duct
Dual duct DOAS with
fan coils
With and without humiditycontrol
This is not the complete list !
Single-Zone Systems
• Zone – any space with a thermostat
Air conditioning
Recirculation
Reheat
Evaporative Cooler
Air-to-air heat exchanger
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 systems
Chapters 7 & 8and
Handout Section on the course website