Scored

Your Name

Agi, Yasemin

Journal Entry For

Module 9 - HVAC Systems

ACC Folder Link

https://acc.autodesk.com/docs/files/projects/cbef7261-4ed5-4dad-99c1-e2a751c74519?folderUrn=urn%3Aadsk.wipprod%3Afs.folder%3Aco.XUa3LBGqRY2MJRLR-wO_Lw&viewModel=detail&moduleId=folders

ACC Revit File Link

https://acc.autodesk.com/docs/files/projects/cbef7261-4ed5-4dad-99c1-e2a751c74519?folderUrn=urn%3Aadsk.wipprod%3Afs.folder%3Aco.XUa3LBGqRY2MJRLR-wO_Lw&entityId=urn%3Aadsk.wipprod%3Adm.lineage%3Av1feLJh-QUyAs7uz7X4Klw&viewModel=detail&moduleId=folders

Created

Jan 6, 2025 12:34 AM

Last Edited

Jan 6, 2025 12:34 AM

Created by

Glenn Katz

ACC Coordination View Link

https://acc.autodesk.com/model/viewer/projects/cbef7261-4ed5-4dad-99c1-e2a751c74519/model-set/92c667a3-ccee-4c5f-9e3a-d102a1e2710a/models

HVAC Design Strategy

• decentralized system with air handlers in the mechanical room of each floor
• less duct work needed to connect to a rooftop AHU
• smaller ducts connecting to air handler
• different floors in my design have different uses and different operating schedules, so the HVAC system on some floors can be turned off while others are on
• grilles on the exterior wall of the mechanical room let in outside air
• VAV units for control over each thermal zone
• air-based system for heating and cooling
• my model has 15’ floor-to-floor dimensions, and the largest beams from the structural model were 8.5”x15.125”
• To give extra space for the structural system, I placed the air diffusers at 12’ and centered the ducts around 13’ elevation

Challenges

• running ducts around the central atrium
• some spaces have unexpectedly high calculated air flows, so I need to investigate further if that much is actually necessary or if there is a mistake in my analysis
• the need for so much air flow to certain zones of the building also created some difficulties with duct sizing
• I noticed I was losing a lot of heat to my roof, so I doubled the insulation layer