1. Tri-Valley Jr./Sr. High School Hegins, PA
Senior Thesis, Spring 2004

2. Outline Introduction Background Existing Conditions
Mechanical Redesign
Structural Implications
Electrical Implications
Cost Analysis/Comparison
Conclusions
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

3. Who Am I? Jason P. Kramer Mechanical Option
Primary Faculty Advisor – Dr. Mumma
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

4. Background Setting Major Project Players Hegins, PA
Rural, central PA town, population 5500
Comprised of 450 students, grades 7-12
Lobar, Inc – Gen. Contractor
Major Project Players
Tri-Valley School District - Owner
EI Associates – Architects
Brinjac – Engineers
Lobar, Inc – Gen. Contractor
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

5. Existing Conditions Mechanical Structural Electrical
Four pipe water circulation system with fan coil units, unit ventilators and larger air handling units
Two 150 Ton air-cooled rotary chillers
Two fuel oil fired boilers
Structural
Original Building is cast-in-place concrete
Renovated parts include cast in place concrete and structural steel
Relative roof framing is steel truss construction
Electrical
480V/277 feed from main line into transformer
17 panels from main distribution panel
277V lighting
480V chillers
120V unit ventilators, fan coils
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

6. Mechanical Redesign Basis for Redesign Picture
Maintain current four pipe water circulation system
Switch primary ventilation system from current fan coil/unit ventilators to Dedicated outdoor air system (DOAS)
Use current fan coil/unit ventilator as secondary cooling/heating system
Picture
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

7. Mechanical Redesign What is a Dedicated Outdoor Air System or DOAS?
Minimizes amount of ventilation air circulated through building
What are the advantages of DOAS? 1 2 3 …
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

8. Mechanical Redesign SEMCO Packaged Ventilation Units 1 2 …
Pictures cut from SEMCO
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

9. Mechanical Redesign CAD drawings of new ahu layout on roof
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

10. Mechanical Redesign CAD drawings of new duct systems
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

11. Structural Implications
Steel Truss Roof System
Information gathered from analysis of existing truss system and what, if anything, needs to be done to correct for new AHUs on roof
Possible CAD drawings of new truss layout
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

12. Electrical Implications
Addition of Panels and resizing of main electrical feeds to satisfy new AHUs
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

13. Cost Analysis Mechanical Structural Electrical
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

14. Conclusions Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA
Mechanical Option

15. Special Thanks to… My Parents Dr. Mumma All Other AE Faculty
Fellow Students
Tri-Valley Jr./Sr. High School
Jason P. Kramer
Hegins, PA
Mechanical Option

16. Questions? Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA
Mechanical Option