BUILDING STATISTICS Introduction Owner: CFBC Properties, LLC - PowerPoint PPT Presentation

INTRODUCTIOIN BUILDING STATISTICS • Introduction • Owner: CFBC Properties, LLC • Occupancy Type: Office • Building Statistics • General Contractor: Carl Belt, Inc. • Location & Weather Condition • Size: 46,793 SF • Existing Condition • Architects: VOA Associated, Inc. • Thesis Proposal • Number of Stories: 2 Floor above grade • Civil Engineer: SPECS, Consulting Engineer • Mechanical Depth • Overall Project Cost: $13 million • Direct-Fired Chiller-Heater & Surveyors • Radiant Heating/Cooling Ceiling Panel • Construction Timeline: March 2010-May • MEP Engineer: R.G. Vanderweil Engineers, LLP • Acoustical Breadth • Partition Replacement 2011 • Structural Engineer: Tadjer Cher Edelson Assoiates, Inc. • Conclusion Chan Mi Hwang CareFirst Cumberland Mechanical Option

INTRODUCTIOIN LOCATION WEATHER CONDION • Introduction Baltimore, MD • Building Statistics Design Condition (0.4%) • Location & Weather Condition Summer • • Existing Condition  93.9 °F DB • Thesis Proposal • Mechanical Depth  74.9 °F MCWB • Direct-Fired Chiller-Heater • Radiant Cooling Ceiling Panel Winter • • Acoustical Breadth  12.9°F DB • Partition Replacement • Conclusion Chan Mi Hwang CareFirst Cumberland Mechanical Option

EXISTING MECHANICAL DESGIGN CONDITION • Introduction • Existing Condition Ground-Coupled System • • Mechanical Design  35-90 °F EWT • Energy Model/Conclusion  230 GPM Circulating pumps • Thesis Proposal  1500 MBH Auxiliary Boiler • Mechanical Depth  50 Tons Auxiliary Cooling Tower • Direct-Fired Chiller-Heater  55-85 °F GXWS • Radiant Cooling Ceiling Panel • Acoustical Breadth Dedicated Outdoor Air System • • Partition Replacement  9000 CFM RTU • Conclusion  Enthalpy Recovery Wheel Chan Mi Hwang CareFirst Cumberland Mechanical Option

EXISTING MECHANICAL DESGIGN CONDITION • Introduction • Existing Condition • Mechanical Design Designed Condition • Energy Model/Conclusion • Thesis Proposal Cooling DB 75°F • Mechanical Depth Heating DB 70 °F • Direct-Fired Chiller-Heater Relative Humidity 50 % • Radiant Cooling Ceiling Panel • Acoustical Breadth • Partition Replacement • Conclusion 45 Geothermal Heat Pumps • Chan Mi Hwang CareFirst Cumberland Mechanical Option

EXISTING ENERGY MODELING CONCLUSION CONDITION Total Loads • • Introduction -High initial investment cost  153 Tons of Cooling • Existing Condition  1784 MBH of Heating • Mechanical Design -High electricity consumption  Annually 350,000 KWH Electricity • Energy Model/Conclusion  Annually $37,283 Utility Cost • Thesis Proposal -Low operating cost • Mechanical Depth 3,500 • Direct-Fired Chiller-Heater -Zone thermal comfort control 3,400 • Radiant Cooling Ceiling Panel 3,300 3,200 • Acoustical Breadth -Forced air system 3,100 • Partition Replacement 3,000 2,900 • Conclusion 2,800 2,700 2,600 Chan Mi Hwang CareFirst Cumberland Mechanical Option

THESIS PROPOSAL GOALS PROPOSAL • Introduction • Existing Condition Reduce Initial Investment by replacing • Reduce Initial Investment • • Thesis Proposal Geothermal System to Chiller/Heater Reduce Electrical Consumption • • Mechanical Depth Increase Maintainability • • Direct-Fired Chiller-Heater Reduce Electrical Consumption by replacing • • Radiant Cooling Ceiling Panel Heat pumps to radiant panel system • Acoustical Breadth • Partition Replacement • Conclusion Increase • Maintainability by Central Plant Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL Rooftop Unit Radiant Panels PROSPOSED ALTERNATIVE DEPTH • Introduction Chiller/Heater Central Plant • • Existing Condition  Absorption Chiller • Thesis Proposal  Cooling Tower • Mechanical Depth  Heater • Direct-Fired Chiller-Heater • Radiant Cooling Ceiling Panel Rooftop Unit • • Acoustical Breadth  Enthalpy Recovery Wheel • Partition Replacement  Latent Load-Cooling Coil • Conclusion  Precondition Heating Coil Radiant Cooling/Heating Panels • Chiller/Heater Cooling Tower Chan Mi Hwang CareFirst Cumberland Mechanical Option

• MECHANICAL DIRECT-FIRED CHILLER/HEATER OPERATION MODE DEPTH • Introduction • Existing Condition • Heating Only • Thesis Proposal • Mechanical Depth • Direct-Fired Chiller-Heater • Cooling Only • Radiant Cooling Ceiling Panel • Acoustical Breadth • Simultaneous Mode • Partition Replacement • Conclusion Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL Monthly Loads of CareFirst, MBH DEPTH 2000 • Introduction 1800 • Existing Condition 1600 • Thesis Proposal 1400 • Mechanical Depth • Direct-Fired Chiller-Heater 1200 • Radiant Cooling Ceiling Panel Heating Load 1000 Cooling Load • Acoustical Breadth 800 • Partition Replacement 600 • Conclusion 400 200 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL INTEGRATED PART LOAD VALUE (IPLV) Input & Output Energy Comparison DEPTH of Chiller/Heater, MBH • Introduction 2000 • Existing Condition 1800 ARI #560-2000 Performance • Thesis Proposal 1600 % Load TSA-DC C.O.P. • Mechanical Depth 1400 100 1 • Direct-Fired Chiller-Heater 1200 75 1.154 • Radiant Cooling Ceiling Panel Input Energy 1000 50 1.25 • Acoustical Breadth Output Cooling 800 25 1.136 Output Heating • Partition Replacement 600 • Conclusion 400 • Partial load (IPLV)=1.193 200 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL WASTE ENERGY IN SIMULTANEOUS MODE DEPTH • Introduction 800 • Annually 65 Tons of Cooling Loads • Existing Condition 700 • Thesis Proposal 600 • Mechanical Depth • Annually 243 MBH of Heating Loads • Direct-Fired Chiller-Heater 500 • Radiant Heating/Cooling Ceiling Panel 400 Heating • Acoustical Breadth Cooling • Partition Replacement 300 • Conclusion 200 100 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL RADIANT CEILING PANEL INTEGRAL DIFFUSER PANEL DEPTH • Introduction • Superior Comfort • Existing Condition • Thesis Proposal • Quiet Operation • Mechanical Depth • Direct-Fired Chiller-Heater • Lower Initial Investment Cost • Radiant Cooling Ceiling Panel • Acoustical Breath • Flexible Installation • Partition Replacement • Conclusion Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL COOLING PANEL ISSUES DEPTH • Introduction • Ventilation • Existing Condition • Thesis Proposal • Latent load • Mechanical Depth • Direct-Fired Chiller-Heater • Condensation issue • Radiant Cooling Ceiling Panel • Acoustical Breath • Water Design Approach • Partition Replacement • Conclusion  Dew Point Temperature Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL LATENT LOAD RECOVERY DEPTH • Introduction • Existing Condition Total Latent Load Occupant Latent Load Number of • Thesis Proposal (Btu/h) (Btu/h-person) Occupancy • Mechanical Depth • Direct-Fired Chiller-Heater 205 445 91225 • Radiant Cooling Ceiling Panel • Acoustical Breath • Partition Replacement Required Latent Load • Conclusion q_lat 0.69 CFM delta W 91225 0.69 9000 14.7 Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL SENSIBLE LOAD RECOVERY DESIGN CONCLUSION DEPTH • Introduction • Existing Condition Sensible Load_Cooling coil Grand Load_Cooling Coil • Thesis Proposal q_sen 1.08 CFM delta_T q_tot 4.5 CFM delta_h • Mechanical Depth 245916 1.08 9000 25.3 307800 4.5 9000 7.6 • Direct-Fired Chiller-Heater • Radiant Cooling Ceiling Panel Required CL on cooling panel= • Acoustical Breath (Total required CL) - (CL on Cooling coil) • Partition Replacement Water-Side Design Chiller Cooling Coil Cooling Panel • Conclusion EWT LWT ΔT GPM EWT LWT ΔT EWT LWT ΔT 68.5 53 15.5 237 53 55.6 2.6 55.6 69.1 13.5 153 Tons (1836 MBH) - 246 MBH = 1590 MBH Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL COOLING PANEL SELECTION COOLING PANEL LAYOUT DEPTH • Introduction Airtite Radiant Panel w/ Center Slotted Air Diffuser • Existing Condition • Thesis Proposal Total Required Cooling Load= 1590 MBH • • Mechanical Depth Selected Cooling Panel Capacity = 72 BTUH/SF • • Direct-Fired Chiller-Heater • Radiant Cooling Ceiling Panel Total Cooling Panel Area= 22,000 SF • • Acoustical Breath • Partition Replacement • Conclusion Chan Mi Hwang CareFirst Cumberland Mechanical Option

MECHANICAL ELECTRICAL CONSUMPTION NATURAL GAS CONSUMPTION DEPTH • Introduction 35,000 1,800 • Existing Condition 30,000 1,600 • Thesis Proposal 1,400 • Mechanical Depth 25,000 1,200 • Direct-Fired Chiller-Heater 20,000 1,000 • Radiant Cooling Ceiling Panel 800 • Acoustical Breadth 15,000 600 • Partition Replacement 10,000 400 • Conclusion 200 5,000 0 0 Chan Mi Hwang CareFirst Cumberland Mechanical Option