Tri-Valley Jr./Sr. High School Hegins, PA

Tri-Valley Jr./Sr. High SchoolTri-Valley Jr./Sr. High SchoolHegins, PAHegins, PA

Senior Thesis, Spring 2004

OutlineOutline IntroductionIntroduction BackgroundBackground Existing ConditionsExisting Conditions Mechanical RedesignMechanical Redesign Structural ImplicationsStructural Implications Electrical ImplicationsElectrical Implications Cost Analysis/ComparisonCost Analysis/Comparison ConclusionsConclusions

Tri-Valley Jr./Sr. High SchoolTri-Valley Jr./Sr. High SchoolMechanical OptionMechanical Option

Jason P. KramerJason P. Kramer

Hegins, PAHegins, PA

Who Am I?Who Am I?

Primary Faculty Advisor – Dr. MummaPrimary Faculty Advisor – Dr. Mumma

Jason P. KramerMechanical Option




BackgroundBackground

Major Project PlayersMajor Project Players Tri-Valley School District - OwnerTri-Valley School District - Owner EI Associates – ArchitectsEI Associates – Architects Brinjac – EngineersBrinjac – Engineers Lobar, Inc – Gen. ContractorLobar, Inc – Gen. Contractor




SettingSetting Hegins, PAHegins, PA Rural, central PA town, population 5500Rural, central PA town, population 5500 Comprised of 450 students, grades 7-12Comprised of 450 students, grades 7-12 Lobar, Inc – Gen. ContractorLobar, Inc – Gen. Contractor

Existing ConditionsExisting Conditions

MechanicalMechanical Four pipe water circulation system Four pipe water circulation system

with fan coil units, unit ventilators with fan coil units, unit ventilators and larger air handling unitsand larger air handling units

Two 150 Ton air-cooled rotary Two 150 Ton air-cooled rotary chillerschillers

Two fuel oil fired boilersTwo fuel oil fired boilers




ElectricalElectrical 480V/277 feed from main line into 480V/277 feed from main line into

transformertransformer 17 panels from main distribution panel17 panels from main distribution panel 277V lighting277V lighting 480V chillers480V chillers 120V unit ventilators, fan coils120V unit ventilators, fan coils

StructuralStructural Original Building is cast-in-place concrete Original Building is cast-in-place concrete Renovated parts include cast in place Renovated parts include cast in place

concrete and structural steelconcrete and structural steel Relative roof framing is steel truss Relative roof framing is steel truss

constructionconstruction

Mechanical RedesignMechanical Redesign




Basis for RedesignBasis for Redesign Maintain current four pipe water Maintain current four pipe water

circulation systemcirculation system Switch primary ventilation system Switch primary ventilation system

from current fan coil/unit ventilators from current fan coil/unit ventilators to Dedicated outdoor air system to Dedicated outdoor air system (DOAS)(DOAS)

Use current fan coil/unit ventilator Use current fan coil/unit ventilator as secondary cooling/heating as secondary cooling/heating systemsystem

PicturePicture





What is a Dedicated Outdoor Air System or DOAS?What is a Dedicated Outdoor Air System or DOAS? Minimizes amount of ventilation air circulated through Minimizes amount of ventilation air circulated through

buildingbuilding

What are the advantages of DOAS?What are the advantages of DOAS? 11 22 33 ……





SEMCO Packaged Ventilation UnitsSEMCO Packaged Ventilation Units 11 22 ……

Pictures cut from SEMCO Pictures cut from SEMCO





CAD drawings of new ahu CAD drawings of new ahu layout on roof layout on roof





CAD drawings of new duct CAD drawings of new duct systemssystems

Structural ImplicationsStructural Implications




Steel Truss Roof SystemSteel Truss Roof System Information gathered from analysis of existing Information gathered from analysis of existing

truss system and what, if anything, needs to truss system and what, if anything, needs to be done to correct for new AHUs on roofbe done to correct for new AHUs on roof

Possible CAD drawings of new truss layoutPossible CAD drawings of new truss layout

Electrical ImplicationsElectrical Implications




Addition of Panels and resizing of main electrical Addition of Panels and resizing of main electrical feeds to satisfy new AHUsfeeds to satisfy new AHUs

Cost AnalysisCost Analysis




MechanicalMechanical

ElectricalElectrical

StructuralStructural

ConclusionsConclusions




Special Thanks to…Special Thanks to…




My ParentsMy Parents Dr. MummaDr. Mumma All Other AE FacultyAll Other AE Faculty Fellow StudentsFellow Students

Questions?Questions?




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Tri-Valley Jr./Sr. High School Hegins, PA

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