Your Name
Carmen Chen
Linked Student
Journal Entry For
Module 7 - Building Envelope Systems
Scored
Created
Feb 9, 2022 11:42 PM
Last Edited
Feb 13, 2022 5:24 AM
After making adjustments to the existing model from Module 6, the current building has its building envelope features in addition to small revisions to the floor plans/layout.
The building envelope utilizes several material types:
- EIFS on Metal Stud (high thermal resistance)
- Brick on Metal Stud (high thermal resistance; aesthetic choice)
- CMU on Metal Stud (high thermal resistance)
- CMU Insulated (lower thermal resistance compared to the above)
- green roof surfaces were added to the roof of the 2-story structure
Wall surfaces in the model include:
- basic walls & partition walls
- glazed surfaces
An Insight Energy analysis was done, and the results were as follows:
- operating schedule (12/6)
- roof construction (R38 to R15)
- wall construction (R38 wood to 14 in ICF)
- window glass (triple low e, all directions)
- wwr north (30-80%)
- wwr south (up to 80%)
- wwr west (up to 65%)
- wwr east (up to 10%)
- window shades (north, south, west - 1/2 to 2/3 window height)
- plug load efficiency (0.6 W/sf)
- lighting efficiency (0.3 W/sf)
- daylighting and occupancy controls (both)
- surface coverage (90%)
- payback limit (30 yr)
- panel efficiency (20.4%)
Windows, glazing, and skylight decisions were made based on the Insight Lighting analysis:
The original building results showed the areas that needed additional light:
- 2 of the education rooms need more natural lighting, although it would be sufficient to use artificial lighting in these rooms (they won’t always be in use)
- the wall in front of the education rooms (creating a slight separation from the exhibit space) was changed to glass, which brings some more light into the rooms
- additional steps could be adding hall windows to the walls, or changing the wall material
- other areas in red are the restrooms/mechanical rooms/food prep area
- the office corridor was shaded, although probably won’t get much use so it isn’t a huge issue
- storage room is mostly shaded
- hall windows were put on the office walls, which transferred some of the light from the atrium space and the outside into the hallway
- the conference room corridor had a similar issue to the office corridor
- hall windows were placed on the conference room walls
- skylights were added above the corridor
For shading features, a roof overhang was added to shade the lobby area during summer, but still allow sunlight into the space during winter:
- would consider creating the overhang along the entire front of the building instead of just one portion
