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 CO 2

Fan Terminal Units Same as fan coil Can be with or without recirculation

HVAC Systems Single zone Multi zone VAVCAV VAVCAV All Hydroinic that relay on infiltration With and without reheaters DOAS with fan coils With reheaters Dual duct Dual duct DOAS with fan coils With and without humidity control 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 assignments related to the HVAC systems Chapters 7 & 8 and Handout Section on the course website