Tri-Valley Jr./Sr. High School Hegins, PA Senior Thesis, Spring 2004
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
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
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
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
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
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
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
Mechanical Redesign CAD drawings of new ahu layout on roof Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA Mechanical Option
Mechanical Redesign CAD drawings of new duct systems Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA Mechanical Option
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
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
Cost Analysis Mechanical Structural Electrical Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA Mechanical Option
Conclusions Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA Mechanical Option
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
Questions? Tri-Valley Jr./Sr. High School Jason P. Kramer Hegins, PA Mechanical Option