EMD SERONO RESEARCH CENTER EXISTING BILLERICA, MA SHIYUN (SHARON) - PowerPoint PPT Presentation

EMD SERONO RESEARCH CENTER – EXISTING BILLERICA, MA SHIYUN (SHARON) CHEN | MECHANICAL AE SENIOR THESIS

Outline Building Overview Existing Mechanical System Overview Dedicated Outdoor Air System/Active Chilled Beam Existing Mechanical Active Chilled Beam Heat Recovery Systems Heat Recovery Architectural Conclusion Architectural Breadth Conclusion

Building Overview Design Team Outline Building: EMD Serono Research Center – existing Owner: EMD Serono, Inc. Building Location: Billerica, MA Architect: Ellenzweig Associate, Inc. Overview Building Size: 56,700 SF MEP Engineer: Bar, Rao + Athanas Consulting Engineers, LLC Existing Mechanical Number of Story: Basement + 2 Stories + Penthouse Active Chilled Beam Structural Engineer: LeMessurier Consulting Engineers Heat Recovery Occupancy/ Function Type: Pharmaceutical Lab Landscape Architect: John G. Crowe Associates, Inc. Architectural Date of Construction: Nov,1999 – Marc,2002 Contractor: Linbeck/Kennedy & Rossi Conclusion Project Delivery Method: Fast - Track

Existing Mechanical System Outline (2) 100% OA Air Handling Units Penthouse Overview (1) OA + RA Air Handling Unit Mechanical Room Existing Mechanical (1) 350 Ton Centrifugal Chiller Lab 2nd Floor Active Chilled Beam (1) 60 Ton Air Cooled Chiller Heat Recovery Office (2) Low Pressure Steam Boilers 1st Floor Architectural Vivarium (2) Heat Exchangers Conclusion Mechanical Basement Building Division

Redesign Goals Solution Outline Dedicated Outdoor Air System ENERGY CONSUMPTION Overview Existing Mechanical Active Chilled Beam System SYSTEM EFFICIENCY Active Chilled Beam Heat Recovery Heat Recovery System INDOOR AIR QUALITY Architectural Conclusion THERMAL COMFORT Solar Shading System

DOAS + Active Chilled Beam Chilled Beam Selection Outline 17CFM/LF | 665 BTU/LF Active Chilled Beam Advantages Overview Minimize Outdoor Air Conditioning TROX Technic Existing Mechanical Eliminate Reheat Energy 4 Pipe Chilled Beam, Model DID602, type “C” nozzle Active Chilled Beam NC25 More Efficient Chilled Water System Heat Recovery Better Mixed Air Distribution Architectural Conclusion More Uniform Temperature Distribution Improve Indoor Air Quality (1) 350 Ton Screw Chiller - AHUs (1) 150 Ton Screw Chiller - ACBs Lower Maintenance

CFD Simulation Outline Existing VAV Supply Air = Outside Air = 6000cfm Exhaust Grills Fume Hood Sash SA Temperature: 13C = 55.4F Square VAV Diffusers Overview DOAS+ACB Supply Air = Outside Air + Recirculate Air Existing Mechanical 20,092cfm = 3,324cfm + 16,769cfm VAV Active Chilled Beam SA Temperature: 19.64C = 67.4F Active Chilled Beam Heat Recovery General Information Architectural Grid Size Turbulence Numerical Number of Mass Model Scheme Iterations Residual Conclusion Existing System 108x218x61 KE model Upwind 7000 1.30% Active Chilled 52x459x35 KE model Hybrid 5000 0.54% Beam System ACB

Outline The Active Chilled Beam System Air Flow Comparison provides a better mix air distribution than VAV system VAV : supply air is closely Overview concentrated beneath the square diffuser Existing Mechanical VAV Active Chilled Beam VAV VAV Heat Recovery Architectural ACB : air flow along chilled Conclusion beam to spread air around ACB ACB ACB Side View Closer View Overview

Outline The Active Chilled Beam System Temperature Distribution Comparison has a smaller temperature gradient than VAV system The Active Chilled Beam System provides a more uniform temperature distribution than VAV system Overview ASHRAE Existing Mechanical <5F (2C) difference from ankles to head Active Chilled Beam To maintain thermal comfort and avoid draft VAV VAV Heat Recovery VAV Architectural 3F (2C) difference from ankles to head Conclusion ACB ACB ACB 0-2F (0-1C) difference from ankles to head Side View Overview

Outline Contaminant Concentration Comparison The ACB System achieves 75% concentration reduction The Active Chilled Beam System while VAV system has only 25% reduction provides greater ability to remove airborne contaminant ACB VAV from the space than VAV system Overview Source Edge of Bench Walkway Existing Mechanical VAV 200 ppm 200 ppm 150 ppm Active Chilled Beam VAV Heat Recovery ACB 200 ppm 100-150 ppm 50 ppm Architectural Conclusion ACB Overview

Outline The DOAS + Active Chilled Beam system Saves 12.5% (313,789Kwh) electricity consumption in the summer & 24.5% (32.098Therm) gas consumption in the winter when The DOAS + ACB system has a simple payback The DOAS + ACB system cost $621,276 compared to the existing CAV/VAV system period of 9 years 5 months more in first cost than the CAV/VAV sys. Electricity Consumption (Kwh) 300,000 Electric(kwh) Overview 200,000 Existing Mechanical 1800000 100,000 Initial Cost Difference: $621,276 1600000 Active Chilled Beams 0 Active Chilled Beam 1400000 Chiller Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1200000 Cooling Tower Heat Recovery Annual Energy Saving: $66,078 Existing Sys. DOAS/ACB 1000000 Chilled Water Pump AHU 800000 Architectural Gas Consumption ( Therm) Ductwork 600000 Pipe Cost 20,000 400000 Simple Payback: 9 years 5 months Conclusion Gas ( Therm) Boiler 200000 10,000 0 Existing System DOAS + Active 0 Chilled Beam System Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec First Cost Existing Sys. DOAS/ACB

Outline All heat recovery systems are very cost effective Utility Cost Comparison with payback period of 0 to 5 months Heat Recovery System Analyzed Annual Utility Cost ($) Overview 355,000 Simple Payback Calculation Comparison 350,000 Cost Utility ($) Existing Mechanical DOAS + ACB Total Cooling Load (Ton) 345,000 Heat Pipe Fixed Plate Enthalpy Wheel Run Around Coil Heat Pipe 340,000 Active Chilled Beam Simple Payback 5 months 0 0 0 335,000 Heat Recovery 330,000 Fixed Plate 325,000 DOAS/ACB Heat Pipe Fixed Plate Enthalpy Wheel RunaroundCoil Architectural Enthalpy Wheel Series1 350,991 340,603 339,809 336,779 344,804 Conclusion Runaround Coil Loop

Outline Runaround Coil system are chosen to Runaround Loop Schematic implement on all air handling units The Runaround Coil is chosen to be the best suited heat recovery system Run Around Coil Loop System Simply Payback Calculation Comparison Overview AHU1 AHU2 AHU3 AHU1,3 AHU1,2,3 Systems Decision Matrix Existing Mechanical Additional Cost($) 3,287 2,056 4,211 -48,702 -46,646 Heat Pipe Fixed Plate Enthalpy Runaround Operating Saving($) Active Chilled Beam Wheel Coil 3,743 9,320 4,143 6,188 12,524 Efficiency 48-53 64-67 71-79 50 Simply Payback 11 months 3 months 1 year 0 0 Heat Recovery Energy Recovered Sensible Sensible S+L Sensible Cross Contamination No No Yes No Architectural Duct Adjacencies Needed Needed Needed Not Needed Conclusion Maintenance 1 3 4 2 (1:lowest – 4:highest)

Architectural Breadth Outline Solar Shading Systems East Overview Latitude: 42° 33' 29" N Existing Mechanical Longitude:71° 16' 9" W Active Chilled Beam North South Heat Recovery Architectural Conclusion West 2ft 3ft 4ft 5ft

Outline Solar shading system reduces solar load in the summer Solar shading system reduces solar parameter heating saves electricity consumption in the winter penalty in gas consumption Solar Shade Gas Saving Solar Shade Electricity Saving East Overview 3,000 35,000 Electricity Saving (Kwh) Existing Mechanical 30,000 2,000 Gas Saving (Therm) 25,000 Active Chilled Beam 1,000 20,000 North South Heat Recovery 0 15,000 2ft SW 3ft SW 4ft SW 5ft SW 2ft ALL 3ft ALL 4ft ALL 5ft ALL 10,000 Architectural -1,000 5,000 -2,000 Conclusion 0 2ft SW 3ft SW 4ft SW 5ft SW 2ft ALL 3ft ALL 4ft ALL 5ft ALL West -3,000 Existing Sys. ACB ACB+RC Existing Sys. ACB ACB+RC

Outline Payback Periods of solar shading system range from 4ft overhang is selected as the optimal system First costs of solar shading system 19 years to 43 years range from $17,066 to $165,568 Overview Solar Shade System Simply Payback Period 200,000 Existing Mechanical Solar Shade on South & West Walls Solar Shade on All Walls 150,000 2ft 3ft 4ft 5ft 2ft 3ft 4ft 5ft Active Chilled Beam 100,000 Existing System 32 19 19 20 36 28 28 22 Heat Recovery 50,000 ACB 38 23 23 24 43 33 34 26 Architectural ACB + RC 40 24 24 25 45 35 35 27 0 Conclusion 2ft 3ft 4ft 5ft 2ft 3ft 4ft 5ft SW SW SW SW ALL ALL ALL ALL 4ft Overhang First Cost

Architectural Breadth Outline Overview Existing Mechanical Existing Existing Existing Active Chilled Beam Heat Recovery Architectural Conclusion Solar Shade Solar Shade Solar Shade North West Views West Views South Views