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1. X472 HVAC System Design Considerations
Class 7 – System Selection 2 – Class
Exercises
Todd Gottshall, PE
Western Allied
Menlo Park, CA
Reinhard Seidl, PE
Mark Hydeman, PE
Glenn Friedman, PE
Taylor Engineering
Alameda, CA
Fall 2015

2. 2
General
 Contact Information
Reinhard: rseidl@taylor-engineering.com
Mark: mhydeman@continual.net
Todd: tgottshall@westernallied.com
 Text
• None
 Slides
• download from web before class
• Log in to Box at https://app.box.com/login
• Username: x472student@gmail.com
• Password: x472_student (case sensitive)

3. 3
Course Outline
Date Class Topic Teacher
9/02/2015 1. Introduction / Systems Overview / walkthrough RS
9/09/2015 2. Generation Systems TG
9/16/2015 3. Distribution Systems RS
9/23/2015 4. Central Plants TG
9/30/2015 5. System Selection 1 - class exercises RS
10/07/2015 6. Specialty Building types (High rise, Lab, Hospital,
Data center)
TG
10/14/2015 7. System Selection 2 - class exercises RS
10/21/2015 8. Construction codes and Project delivery methods TG
10/28/2015 9. 2013 T24 and LEED v4 MH
11/04/2015 10. Life-Cycle Cost Analysis and exam hand-out TG
There are three instructors for this class. Todd Gottshall (TG), Reinhard Seidl (RS)
and Mark Hydeman (MH). The schedule below shows what topics will be covered by
who, and in what order.

4. 4
Class Outline
Today’s class consists of a workshop in class. You will split into groups and discuss (6) Case
studies to determine what system you would select for the buildings in question, and why. Please
use the “system selection” worksheets to answer what systems are appropriate and what systems
are not appropriate, then hand these in after class.
The answers will be presented in class, and will be posted on the ftp site after class
Case Building Size, sqft Floors Year
1 Lab 35,000 1 2010
2 Data Center 30,000 x 2 17 2010
3 Kitchen – Mid-size 8,000 5 2013
4 Kitchen – Small 2,000 2 2013
5 High Rise 580,000 1 2000
6 Clean Room, class 100 6,500 1 2000
7 Clean Room, class 10,000 & 100 5,800 & 900 1 2015
8 Pharmaceutical Lab w hoods 4,400 1 2015
9 Computer room, 200+ W/sqft 360 1 2015
Work on in
class:
1, 2, 3 / 6, 8, 9
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5. 5
1-Lab Building
Owner: Federal Government
Building Size: 35,000 ft2
Uses:
Earth Sciences (Labs w Fume Hoods and General office
areas, about 60% lab vs 30% office split)
# Floors: 3
Other Considerations:
Gut& rehab of existing building. Part of a campus with
other nearby lab & general purpose buildings, built to
last 30-40 years, LEED Platinum goal

6. 15
Lab Building
 Ground Floor
Office
Lab

7. 16
Lab Building
 Upper Floors
Office
Lab
Lab

8. 6
2-Data Center
Owner: Private Owner
Building Size: Bldg A, 30,000 ft2, Bldg B, 28,000 ft2
Uses:
Office, Research labs (electronics, not chemistry) and
medium-density rack space
# Floors: Bldg A: 2 floors, Bldg B: 1 floor, both flat-slab buildings
Other Considerations:
 Retrofit of existing buildings, same customer, same
campus. Existing central plant. Insufficient floor-to-
floor height for raised floor design
 Bldg A first floor ~ 200 W/sqft power density and
second floor ~ 30 W/sqft density. Existing rooftop
package unit.
 Building B: all ~ 200 W/sqft. Core office area with
higher density areas at perimeter. Only one perimeter
side accessible for potential equipment because of
existing service yard, other areas have landscaping
etc.

9. 23
Data Center
 First floor: medium
density racks

10. 25
Data Center
 Second floor: low-
density area.

11. 29
Data Center
 Center area with
offices
 Perimeter area with
high-density racks
Service Yard
High density
Office

12. 7
3-Kitchen – Mid size
Owner: University
Building Size: 8,000 ft2
Uses:
General Food Service / Cafeteria type building. 6
separate island hoods shown by food service
consultant with 12,000 cfm total exhaust
# Floors: 1
Other Considerations:
 Building is about 50% Dining / Servery area and
about 50% kitchen area. Central plant with CHW
and HW located next to building. Building
located in San Diego

13. 39
Kitchen Mid-size
 Food service
drawings show
equipment

14. 8
4-Kitchen - Small
Owner: University
Building Size: 200,000 ft2 total, 2,000 ft2 kitchen
Uses:
Serves a 12,000 ft2 ballroom for special events, 3
adjacent canopy hoods shown by food service
consultant, 10,000 cfm total exhaust
# Floors: 3 (entire building)
Other Considerations:
 LEED project in San Diego
 Lots of adjacent space with potentially high airflows
(and CO2 controls)

15. 47
Kitchen Small
 Fryers, ranges at
bottom of drawing
(“artist’s” rendition
since I could not
locate food service
record drawings)

16. 9
5-High Rise
Owner: Private Owner
Building Size: 580,000 ft2
Uses:
Offices and 5 ksqft data center. Large entry lobby with 7
story atrium
# Floors: 15 + Garage, 2 levels
Other Considerations:  Located on SF waterfront, prestigious HQ

17. 52
Highrise
 Floorplan
 Note atrium at
middle bottom of
drawing (7 stories
high)

18. 10
6 - Clean Room
Owner: Private Owner, startup
Building Size:
Total: 20,000 sf tilt-up, want to install 6,500 sf Class 100
Clean Room
Uses: Semiconductor manufacturing for a small-scale startup
# Floors: 1 Story, Tilt-up, warehouse 25’ high
Other Considerations:
 Retrofit of existing building
 Class 100: semiconductor mfg. with process exhaust,
but only a couple of machines with significant heat
loads

19. 59
Clean Rooms
20 ksqft overall for
building
6.5 ksqft for class
100 clean room
Equipment yard

20. 11
7-Clean Rooms
Owner: Private Owner
Building Size:
Total: 53,000 sf, 5,800 sf Class 10,000 Clean Room, 900
sf Class 100 Clean Room with 10-40% RH
Uses: Manufacturing and Office
# Floors:
1 Story, Tilt-up, Equipment Mezzanine over
Manufacturing Floor
Other Considerations:
 Retrofit of existing buildings, Existing AHU and Chiller
plant.
 New Boiler Plant for Nox Upgrade
 10’ Ceilings
 Class 10,000: 60 ACH, Box in Box, No Envelope load
 Class 100: 50 ACH, Box in Box, No Envelope load

21. 2
Clean Rooms

22. 12
8-Lab – Low Cost
Owner: Startup Pharmaceutical
Suite Size: 4,400 ft2
Uses: Single Zone Lab with (8) 8’ Hoods
# Floors: 1 Story, Tilt-up, Wood Roof
Other Considerations:
 Existing building in Office Park
 One of multiple tenants in Building
 No Central Control System
 No Central HVAC services

23. 4
Lab – Low Cost

24. 13
9-Computer Room – Low Cost
Owner:
Publically Traded Life Sciences Company – DNA
Sequencing
Building Size: Total Building: 68,500 SF, Computer Room: 360 SF
Uses: Computer Room: > 200 W/SF
# Floors: 1 Floor, Tilt-up, Wood Roof
Other Considerations:
 Existing building in Office Park
 New Equipment
 Redundancy
 Existing CHW plant

25. 6
Computer Room – Low Cost