Miller Children’s Hospital Pediatric Inpatient Addition Long Beach, CA
Presentation Outline Presentation Outline • Electrical Breadth – PV Panels • Building Background • System Sizing • Existing Systems Summary • Cost Estimate and Payback • Design Objectives • Electrical System Integration • Summary and Recommendation • Mechanical Depth – CHP • Conclusions • CHP Screening Process • Energy Analysis • Central Plant Redesign • Electrical System Integration • Cost Breakdown and Emissions • Summary and Recommendation
Building Background • General Building Information Owner • Miller Children’s Hospital Building Background Building Background Presentation Outline Presentation Outline Project Size • 127,000 square feet • Building Building Background Background • Electrical Breadth – PV Panels • The Pediatric Inpatient Addition Total Cost • Existing Systems Summary • System Sizing - 4-Story Hospital Facility • Cost Estimate and Payback • $151,000,000 (estimated) • Design Objectives • Electrical System Integration - 7 Operating Rooms Design-bid-build • Mechanical Depth – CHP • Summary and Recommendation Completion Date Completion Date - Neonatal Intensive Care Unit Neonatal Intensive Care Unit • CHP Screening Process • Conclusions • Fall 2009 - Utilizes Green Roof System • Energy Analysis • Central Plant Redesign • Electrical System Integration • Cost Breakdown and Emissions • Summary and Recommendation
Existing Systems Summary Existing Systems Summary Condenser Water Flow Diagram Chilled Water Flow Diagram Presentation Outline Presentation Outline Mechanical System Mechanical System • Building Background • Electrical Breadth – PV Panels • 7 Air Handling Units (located on roof) • System Sizing • Existing Existing Systems Systems Summary Summary • Constant Volume with Space Reheat • Cost Estimate and Payback • HEPA Filters Used for Operating Rooms • Design Objectives • Electrical System Integration • (2) 500 ton Centrifugal Water Cooled Chillers • Mechanical Depth – CHP • Summary and Recommendation • (2) Induced Draft Cooling Towers • Conclusions • CHP Screening Process • Energy Analysis • (2) 2,000 MBh Gas-Fired Hot Water Boilers • Central Plant Redesign • Electrical System Integration Hot Water • Cost Breakdown and Emissions Flow Diagram • Summary and Recommendation
Existing Systems Summary Existing Systems Summary Electrical System Single Line Diagram Presentation Outline Presentation Outline Electrical System Electrical System • Building Background • Electrical Breadth – PV Panels • Electric Utility – Southern California Edison • System Sizing • Existing Existing Systems Systems Summary Summary • 480Y/277V 3-phase 4-wire secondary • Cost Estimate and Payback • (2) 750 kW emergency generators • Design Objectives • Electrical System Integration • 10,000 kW redundant transformer • Mechanical Depth – CHP • Summary and Recommendation - Miller Children’s Hospital Mill Child ’ H it l • Conclusions • CHP Screening Process - Does not serve loads • Energy Analysis - For future use and owner preference • Central Plant Redesign • Electrical System Integration • Cost Breakdown and Emissions • Summary and Recommendation
Design Objectives Design Objectives Annual Energy Consumption Energy Consumption • Electricity - 5,900,000 kWh/year Presentation Outline Presentation Outline Main Objectives Main Objectives • Gas • Gas - 38,000 therms/year 38 000 therms/year • Building Background • Electrical Breadth – PV Panels Operational Costs • Reduce energy consumption • Existing Systems Summary • System Sizing • Save money in operational costs • Electricity - $1,100,000/year • Cost Estimate and Payback • Gas - $30,000/year • Design Objectives Design Objectives • Cut back on emissions • Electrical System Integration • Mechanical Depth – CHP • Summary and Recommendation Emissions (Utility Generated) Emissions (Utility Generated) • Conclusions • CHP Screening Process • NO X – 6,000 lbs/year • Energy Analysis • SO X – 5,000 lbs/year • Central Plant Redesign • Electrical System Integration • CO 2 – 3,800 lbs/year • Cost Breakdown and Emissions • Summary and Recommendation
Mechanical Depth Mechanical Depth Combined Heat & Power Combined Heat & Power Energy Costs and Consumption Energy Costs and Consumption Presentation Outline Presentation Outline CHP Screening Process CHP Screening Process • Building Background • Electrical Breadth – PV Panels • Spark Spread • Existing Systems Summary • System Sizing -The difference between electricity and • Cost Estimate and Payback • Design Objectives gas rates in $/MMBtu • Electrical System Integration General Factors Affecting CHP • Mechanical Mechanical Depth Depth – – CHP CHP - Higher spread favors CHP • Summary and Recommendation • Conclusions • Cost of electricity ( > $0.05/kWh) • CHP Screening Process CHP Screening Process • Energy Analysis • Cost of gas( < $4.00/MMBtu) • Central Plant Redesign • Electrical System Integration • Cost Breakdown and Emissions • Summary and Recommendation
Mechanical Depth Mechanical Depth Combined Heat & Power Combined Heat & Power Electric Load Profiles Presentation Outline Presentation Outline Energy Analysis Energy Analysis • Peak Electric Load • Building Background • Electrical Breadth – PV Panels - September 6 at 5:00 pm • Existing Systems Summary • System Sizing • Cost Estimate and Payback - 900 kW • Design Objectives • Electrical System Integration • Peak Heating Load • Mechanical Mechanical Depth Depth – – CHP CHP • Summary and Recommendation - January 1 at 7:00 am (T OA = 40°F) • Conclusions • CHP Screening Process -1,700 MBh • Energy Analysis Energy Analysis • Central Plant Redesign • Peak Cooling Load • Electrical System Integration - September 6 at 5:00 pm (T OA = 91°F) • Cost Breakdown and Emissions • Summary and Recommendation - 225 tons
Mechanical Depth Mechanical Depth Combined Heat & Power Combined Heat & Power Caterpillar Reciprocating Engine Caterpillar Reciprocating Engine Presentation Outline Presentation Outline Energy Analysis Energy Analysis • Building Background • Peak Electric Load – 900 kW • Electrical Breadth – PV Panels • Existing Systems Summary • System Sizing - 15% over-sizing • Cost Estimate and Payback - 1,035 kW generator required • Design Objectives • Electrical System Integration • Use reciprocating engine • Mechanical Mechanical Depth Depth – – CHP CHP • Summary and Recommendation - Little heating needed Little heating needed • Conclusions • CHP Screening Process • Cannot use absorption cooling • Energy Analysis Energy Analysis - Generator size too small • Central Plant Redesign • Electrical System Integration • Generator Operation Condition • Cost Breakdown and Emissions - Demand output • Summary and Recommendation
Mechanical Depth Mechanical Depth Combined Heat & Power Combined Heat & Power CHP System Schematic and Annual Energy Use Presentation Outline Presentation Outline Energy Analysis Energy Analysis • Building Background • Recovered Heat Energy • Electrical Breadth – PV Panels • Existing Systems Summary • System Sizing • System Schematic • Cost Estimate and Payback • Design Objectives • Electrical System Integration • Mechanical Depth Mechanical Depth - - CHP CHP • Summary and Recommendation • Conclusions • CHP Screening Process • Energy Analysis Energy Analysis • Central Plant Redesign • Electrical System Integration • Cost Breakdown and Emissions • Summary and Recommendation
Mechanical Depth Mechanical Depth Combined Heat & Power Combined Heat & Power Existing Central Plant CHP Plant Redesign Presentation Outline Presentation Outline Central Plant Redesign C t l Pl t R d i • Building Background • Located north of the Pediatric Inpatient • Electrical Breadth – PV Panels • Existing Systems Summary • System Sizing Addition • Cost Estimate and Payback • Design Objectives • Comprised of: • Electrical System Integration • Mechanical Mechanical Depth Depth – – CHP CHP • Summary and Recommendation - Pump Room - Chiller Room • Conclusions • CHP Screening Process - Electrical Switchgear • Energy Analysis Central Plant Area = 4,700 sq. ft. New Central Plant Area = 5,880 sq. ft. - Emergency Generator Room • Central Plant Redesign Central Plant Redesign 25% Increase • Electrical System Integration -Transformer Yard • Cost Breakdown and Emissions • New Generator Room – 1,180 sq. ft. • Summary and Recommendation
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