Скачать презентацию THERMAL STORAGE FEASIBILITY STUDY RYAN BUFF MECHANICAL OPTION Скачать презентацию THERMAL STORAGE FEASIBILITY STUDY RYAN BUFF MECHANICAL OPTION

61c8307e2426f300d4ee370fcbaf258b.ppt

  • Количество слайдов: 38

THERMAL STORAGE FEASIBILITY STUDY RYAN BUFF MECHANICAL OPTION SPRING 2005 NEW HOUSE RESIDENCE HALL THERMAL STORAGE FEASIBILITY STUDY RYAN BUFF MECHANICAL OPTION SPRING 2005 NEW HOUSE RESIDENCE HALL OAKLAND, PA

PRESENTATION OUTLINE n GENERAL PROJECT DATA n PROJECT TEAM n MECHANICAL REDESIGN n ELECTRICAL PRESENTATION OUTLINE n GENERAL PROJECT DATA n PROJECT TEAM n MECHANICAL REDESIGN n ELECTRICAL ANALYSIS n ACOUSTICAL ANALYSIS n CONCLUSIONS RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

GENERAL PROJECT DATA GENERAL PROJECT DATA

GENERAL PROJECT DATA n LOCATION – Carnegie Mellon University Campus 1030 Moorewood Ave. , GENERAL PROJECT DATA n LOCATION – Carnegie Mellon University Campus 1030 Moorewood Ave. , Pittsburgh, PA n SIZE – 72, 000 sq. ft. – 6 Stories (5 floors above grade) n OCCUPANCY TYPE – 257 Bed – Residential Dormitory RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

GENERAL PROJECT DATA n CONSTRUCTION – Began – January 2002 – Complete – March GENERAL PROJECT DATA n CONSTRUCTION – Began – January 2002 – Complete – March 2003 n ACTUAL COST – $ 12 million n PROJECT DELIVERY METHOD – Design-Bid-Build RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

PROJECT TEAM PROJECT TEAM

PROJECT TEAM OWNER: Carnegie Mellon University ARCHITECT: Bohlin Cywinski Jackson MEP ENGINEER: H. F. PROJECT TEAM OWNER: Carnegie Mellon University ARCHITECT: Bohlin Cywinski Jackson MEP ENGINEER: H. F. Lenz Company STRUCTURAL ENGINEER: Atlantic Engineering Services CONSTRUCTION MANAGER: Rycon Construction, Inc. COMMISSIONING: LLI Technologies RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN MECHANICAL REDESIGN

MECHANICAL REDESIGN ORIGINAL DESIGN OBJECTIVES: 1. “Green Design” Principles 2. Individual Room Temperature Control MECHANICAL REDESIGN ORIGINAL DESIGN OBJECTIVES: 1. “Green Design” Principles 2. Individual Room Temperature Control 3. Exceed Code for Indoor Air Quality RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN EXISTING DESIGN CONDITIONS: n Indoor Conditions Outdoor Conditions – Supply Air Winter MECHANICAL REDESIGN EXISTING DESIGN CONDITIONS: n Indoor Conditions Outdoor Conditions – Supply Air Winter § 55°F d. B 2°F d. B (99. 6%) § 60% RH – Zone Setpoints – Summer § 70 -78°F d. B 86°F d. B § 30 -60% RH § 70°F w. B (1%) RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN EXISTING MECHANICAL CONDITIONS: n AIR SIDE – (5) Air Handling Units § MECHANICAL REDESIGN EXISTING MECHANICAL CONDITIONS: n AIR SIDE – (5) Air Handling Units § Constant Volume § 1, 000 – 12, 000 cfm – AHU-5 § 100% OA Make-Up Unit § Air-to-Air Energy Recovery RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN EXISTING MECHANICAL CONDITIONS: n WATER SIDE – (2) 60 ton Air-Cooled Screw MECHANICAL REDESIGN EXISTING MECHANICAL CONDITIONS: n WATER SIDE – (2) 60 ton Air-Cooled Screw Chillers § Delivering Water Temperatures of 44°F § 253 gpm – Total System – Four-Pipe Fan Coil Units § Separate Ventilation System RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN NEW DESIGN GOALS: 1. Reduce Peak Hour Energy Costs 2. Increase Mechanical MECHANICAL REDESIGN NEW DESIGN GOALS: 1. Reduce Peak Hour Energy Costs 2. Increase Mechanical System Efficiency RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN HOURLY LOAD PROFILE: Total Cooling Load 2, 241 ton-hrs Peak Hourly Load MECHANICAL REDESIGN HOURLY LOAD PROFILE: Total Cooling Load 2, 241 ton-hrs Peak Hourly Load 103 tons RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN STRATEGY: n PARTIAL STORAGE-DEMAND LIMITING SYSTEM – Chillers & Storage Tanks Run MECHANICAL REDESIGN STRATEGY: n PARTIAL STORAGE-DEMAND LIMITING SYSTEM – Chillers & Storage Tanks Run in Parallel § Equal Load to Original Design Capacity – Use Same Discharge Temperature – Operate Chiller at Reduced Capacity § During On-Peak Hours Source: ASHRAE Design Guide for Cool Thermal Storage RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN ADDITIONAL COMPONENTS: n CALMAC 1098 C STORAGE TANKS n (1) 35 TON MECHANICAL REDESIGN ADDITIONAL COMPONENTS: n CALMAC 1098 C STORAGE TANKS n (1) 35 TON AIR-COOLED SCROLL CHILLER n (1) 94 TON AIR-COOLED SCROLL CHILLER n ADDITIONAL PUMP – 3 Tanks @ 115 ton-hrs – 25% Ethylene Glycol – (de-rated @ 26 tons) – 107 gpm RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN CHARGE/DISCHARGE CYCLES: Off-peak Hour Control RYAN BUFF MECHANICAL OPTION On-peak Hour Control MECHANICAL REDESIGN CHARGE/DISCHARGE CYCLES: Off-peak Hour Control RYAN BUFF MECHANICAL OPTION On-peak Hour Control NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN COOLING COSTS: Duquesne Light Company Time Total Charge Peak Demand 6. 8516 MECHANICAL REDESIGN COOLING COSTS: Duquesne Light Company Time Total Charge Peak Demand 6. 8516 ¢/k. Wh On-Peak 4. 0304 ¢/k. Wh Off-Peak 1. 8766 ¢/k. Wh On-Peak Hours: RYAN BUFF MECHANICAL OPTION 10: 00 a. m. – 9: 00 p. m. NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN COOLING COSTS: ORIGINAL DESIGN Monthly Average Cost: REDESIGN Monthly Average Cost: $20, MECHANICAL REDESIGN COOLING COSTS: ORIGINAL DESIGN Monthly Average Cost: REDESIGN Monthly Average Cost: $20, 700. 00 $17, 400. 00 REDESIGN MONTHLY SAVINGS: RYAN BUFF MECHANICAL OPTION $3, 300. 00 NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN EQUIPMENT COSTS: STORAGE TANKS $34, 500. 00 EXTRA CHILLER CAPACITY $5, 400. MECHANICAL REDESIGN EQUIPMENT COSTS: STORAGE TANKS $34, 500. 00 EXTRA CHILLER CAPACITY $5, 400. 00 ADDITIONAL PUMP $1, 400. 00 TOTAL EQUIPMENT COST: RYAN BUFF MECHANICAL OPTION $41, 300. 00 NEW HOUSE RESIDENCE HALL OAKLAND, PA

MECHANICAL REDESIGN PAYBACK PERIOD: PAYBACK PERIOD = P /A P = INTIAL COST A MECHANICAL REDESIGN PAYBACK PERIOD: PAYBACK PERIOD = P /A P = INTIAL COST A = MONTHLY SAVINGS TOTAL PAYBACK PERIOD: RYAN BUFF MECHANICAL OPTION 13 MONTHS NEW HOUSE RESIDENCE HALL OAKLAND, PA

ELECTRICAL ANALYSIS Breadth Study ELECTRICAL ANALYSIS Breadth Study

ELECTRICAL ANALYSIS OBJECTIVE: 1. Size New Equipment Feeds 2. Check Panelboard Capabilities RYAN BUFF ELECTRICAL ANALYSIS OBJECTIVE: 1. Size New Equipment Feeds 2. Check Panelboard Capabilities RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ELECTRICAL ANALYSIS BRANCH CIRCUITS: 2002 NATIONAL ELECTRIC CODE n Table 430. 150 – Full ELECTRICAL ANALYSIS BRANCH CIRCUITS: 2002 NATIONAL ELECTRIC CODE n Table 430. 150 – Full Load Current – Breakers sized @ 250% n Table 310. 16 – Wire Sizing n Tables of Chapter 9 – Conduit Sizes RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ELECTRICAL ANALYSIS BRANCH CIRCUITS: MECHANICAL EQUIPMENT ELECTRICAL SIZING Pump FLC Breaker k. VA Wire ELECTRICAL ANALYSIS BRANCH CIRCUITS: MECHANICAL EQUIPMENT ELECTRICAL SIZING Pump FLC Breaker k. VA Wire Size 2 hp, 460 V 3. 4 A 15 A 2. 44 ½”, 4 -#12 THW (Cu) Chillers FLC Breaker k. VA Wire Size 41 hp, 460 V 65 A 175 A 44 2”, 4 -#2/0 THW (Cu) 150 hp, 460 V 180 A 450 A 122 3”, 4 -#700 THW (Cu) RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ELECTRICAL ANALYSIS PANELBOARD: TOTAL PANEL SCHEDULE k. VA: = k. VAtotal + (0. 25)(k. ELECTRICAL ANALYSIS PANELBOARD: TOTAL PANEL SCHEDULE k. VA: = k. VAtotal + (0. 25)(k. VAlargest) = 355 k. VA MINIMUM AMPACITY: = Total k. VA / [(. 480)(1. 73)] = 427 A MAXIMUM AMPACITY: = [Total k. VA + (. 75)(k. VAlargest) / [(. 480)(1. 73)] = 505 A ACTUAL AMPACITY = 600 A OK RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACOUSTICAL ANALYSIS Breadth Study ACOUSTICAL ANALYSIS Breadth Study

ACOUSTICAL ANALYSIS OBJECTIVE: 1. Determine Relative Loudness of Mechanical Room 2. Check NC Levels ACOUSTICAL ANALYSIS OBJECTIVE: 1. Determine Relative Loudness of Mechanical Room 2. Check NC Levels with Adjacent Room RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACOUSTICAL ANALYSIS freq Lw s MECHANICAL ROOM CHARACTERISTICS: 125 Hz n 15 m x ACOUSTICAL ANALYSIS freq Lw s MECHANICAL ROOM CHARACTERISTICS: 125 Hz n 15 m x 7 m x 3. 24 m (Basement) – 8” CMU Block Walls 250 Hz 103 98 – 8” Concrete Slab Ceiling n 500 Hz Absorption Characteristics (SI) 96 freq Lw s c w f SHz c Sw w 98 f f ΣSi i sa S 1000 c RT s b 125 Hz 103 . 01 1. 05 14. 30 250 Hz 98 . 01 . 05 . 01 1. 05 7. 15 500 Hz 96 . 02 . 06 . 02 2. 10 8. 58 1000 Hz 98 . 02 . 07 . 02 2. 10 10. 01 2000 Hz 95 . 02 . 09 . 02 2. 10 4000 Hz RYAN BUFF 91 . 02 . 08 . 02 2. 10 MECHANICAL OPTION 2000 Hz 4000 2. 10 Hz 1. 05 16. 40 . 05 17. 2 1. 05 9. 25 . 03 9. 5 2. 10 91 2. 10 12. 78 . 04 13. 3 2. 10 14. 21 . 04 14. 8 12. 87 2. 10 17. 07 . 05 17. 9 11. 44 2. 10 95 15. 64. 04 16. 4 NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACOUSTICAL ANALYSIS DINING ROOM CHARACTERISTICS: n 15 m x 7 m x 3. 24 ACOUSTICAL ANALYSIS DINING ROOM CHARACTERISTICS: n 15 m x 7 m x 3. 24 m (1 st Floor) – Gypsum Walls – Glass Windows – Wood Parquet Floor – Acoustical Ceiling Tile n Absorption Characteristics (SI) freq c w g f Sc c Sw w Sf f ΣSi sa I RT r b 125 Hz . 76 . 55 . 35 . 04 79. 80 75. 40 4. 20 159. 40 . 45 290. 6 250 Hz . 93 . 14 . 25 . 04 97. 65 21. 81 4. 20 123. 66 . 35 190. 3 500 Hz . 83 . 08 . 18 . 07 87. 15 13. 07 7. 35 107. 57 . 30 154. 7 1000 Hz . 99 . 04 . 12 . 06 103. 95 7. 02 6. 30 117. 27 . 33 175. 6 2000 Hz . 99 . 12 . 07 . 06 103. 95 16. 35 6. 30 126. 60 . 36 197. 4 4000 Hz RYAN BUFF . 94 . 11 . 04 . 07 98. 70 14. 59 7. 35 MECHANICAL OPTION 120. 64. 34 183. 3 NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACOUSTICAL ANALYSIS Lpr Actual ANALYSIS: 62 n Dining Room / Reading Room 56 – ACOUSTICAL ANALYSIS Lpr Actual ANALYSIS: 62 n Dining Room / Reading Room 56 – Desired NC-35 TL – 5 50 freq Lps TL 125 Hz 97 35 30 45 250 Hz 94 41 500 Hz 91 1000 Hz NR Lpr Actual Desired 34 62 54 36 39 56 46 44 39 34 41 50 40 92 50 45 47 45 36 2000 Hz 88 57 23 52 55 34 35 4000 Hz 85 64 59 61 23 34 Safety factor ACTUAL NC – 50 RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACOUSTICAL ANALYSIS: n Additional Materials – 2” Thick, Porous Sound Absorbing Material § Mechanical ACOUSTICAL ANALYSIS: n Additional Materials – 2” Thick, Porous Sound Absorbing Material § Mechanical Room Ceiling Achievements – Absorb Excessive Low Frequency Lpr freq Lpr Did Not Disturb Dining Room 125 Hz 55 54 46 46 500 Hz 40 40 1000 Hz 36 36 25 35 4000 Hz n Desired 250 Hz § “Rumbling” Actual 2000 Hz n 15 34 ACTUAL NC – 35 RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

CONCLUSIONS CONCLUSIONS

CONCLUSIONS RECOMMENDATIONS: n INSTALL - PARTIAL STORAGE-DEMAND LIMITING SYSTEM – Decreases Peak Hourly Load CONCLUSIONS RECOMMENDATIONS: n INSTALL - PARTIAL STORAGE-DEMAND LIMITING SYSTEM – Decreases Peak Hourly Load Costs – Does Not Interrupt the Mechanical System Downstream – Has Minimal Payback Period RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACKNOWLEDGEMENTS ACKNOWLEDGEMENTS

ACKNOWLEDGEMENTS DEPARTMENT OF ARCHITECTURAL ENGINEERING CARNEGIE MELLON UNIVERSITY Tim Michael Peg Hart Brad Hochberg ACKNOWLEDGEMENTS DEPARTMENT OF ARCHITECTURAL ENGINEERING CARNEGIE MELLON UNIVERSITY Tim Michael Peg Hart Brad Hochberg Steve Lee Rohini Brahme H. F. Lenz Company John Stewart Bob Stano AE FRIENDS The Roommates The Office RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

QUESTIONS RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA QUESTIONS RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA

ACOUSTICAL EQUATIONS RT = ΣSi i / [1 - sab] sab = ΣSi i ACOUSTICAL EQUATIONS RT = ΣSi i / [1 - sab] sab = ΣSi i / ΣSi LPmech = LWmech – 10 Log[RTmech] + 6 NR = TLsf – 10 Log[Sw / RTreceiver] LPreceiver = LPmech – NR RYAN BUFF MECHANICAL OPTION NEW HOUSE RESIDENCE HALL OAKLAND, PA