1 Presentation Outline Presentation Outline Project Background - PDF document

Hilton Baltimore Hilton Baltimore Convention Center Hotel Convention Center Hotel Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Faculty Advisor: Dr. Bahnfleth Bahnfleth Faculty Advisor: Dr. 1

Presentation Outline Presentation Outline • Project Background • Existing Mechanical System • Design Objective • Mechanical Design Alternatives • Energy Analysis • First Costs • Life-Cycle Cost Analysis • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel Hilton Baltimore Convention Center Hotel Project Background Project Background • Project Background • Project Cost: $250 Million • Existing Mechanical System • Groundbreaking: February • Design Objective 2006 • Mechanical Design Alternatives • Completion: August 2008 • Energy Analysis • Owner: Hilton Hotels • First Costs • Adjacent to Oriole Park at • Life-Cycle Cost Analysis Camden Yards and the Baltimore Convention Center • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Hilton Baltimore Convention Center Hotel Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel 2

Project Background Project Background • Project Background • Existing Mechanical System • Design Objective Guest Room Towers West Podium East Podium • Mechanical Design Alternatives • Three Levels • Levels 4 through 21 • Three Levels • Energy Analysis • Restaurant, Starbucks, Junior • 758 Guest Rooms, Service • Main Lobby, Grand Ballroom, Lounge, Meeting Areas Ballroom, Meeting Rooms • First Costs Rooms, Hotel Management • Life-Cycle Cost Analysis • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel Hilton Baltimore Convention Center Hotel Existing Mechanical System Existing Mechanical System • Project Background Cooling • Existing Mechanical System • Comfort Link District Chilled Water System • Design Objective • (2) Plate and Frame Heat Exchangers • Mechanical Design Alternatives 1,000 tons each • Energy Analysis District Side – 37 F to 54 F • First Costs Building Side – 42 F to 56 F • Life-Cycle Cost Analysis • Two pumping zones with (2) pumps each • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Hilton Baltimore Convention Center Hotel Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel 3

Existing Mechanical System Existing Mechanical System • Project Background Heating • Existing Mechanical System • Trigen District Steam System • Design Objective 150 psi steam from Trigen • Mechanical Design Alternatives 50 psi steam after pressure reducing valve • Energy Analysis • (2) Shell and Tube Heat Exchangers • First Costs 810 gpm each • Life-Cycle Cost Analysis Entering Water Temp – 140 F • Electrical Breadth Leaving Water Temp – 180 F • Final Recommendation • Kitchens served by steam directly Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel Hilton Baltimore Convention Center Hotel Existing Mechanical System Existing Mechanical System • Project Background Air Handling PAC 1 PAC 1 2% 2% • Existing Mechanical System • (8) Air Handling Units AHU 8 AHU 8 2% 2% • Design Objective AHU 1 AHUs 1-7 – VAV units with economizers AHU 7 AHU 1 AHU 7 20% 17% 20% 17% • Mechanical Design Alternatives AHU 8 – CAV unit with economizer • Energy Analysis AHU 6 AHU 6 • (4) Makeup Air Units AHU 2 11% AHU 2 11% 15% 15% • First Costs AHU 5 AHU 5 MAUs 1-2 – Serve Guest Room Towers 7% 7% AHU 3 AHU 4 AHU 3 • Life-Cycle Cost Analysis AHU 4 MAUs 3-4 – Serve Kitchen Spaces 16% 11% 16% 11% • Electrical Breadth System Area Breakdown System Area Breakdown • (1) Pool Air Conditioner • Final Recommendation Andrew Rhodes Andrew Rhodes Hilton Baltimore Convention Center Hotel Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel 4

Design Objective Design Objective • Project Background Chiller Plant Optimization Study • Existing Mechanical System • Consider numerous chiller plant design alternatives in order to quantitatively prove which alternative is • Design Objective the most cost-effective. • Mechanical Design Alternatives • A Life-Cycle Cost Analysis, based on first and yearly • Energy Analysis operating costs, will be the basis of the optimization. • First Costs • Life-Cycle Cost Analysis Lowest Life-Cycle Cost = Most Cost-Effective System • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel Hilton Baltimore Convention Center Hotel Mechanical Design Alternatives Mechanical Design Alternatives • Project Background Option 1: District System with Backpressure • Existing Mechanical System Steam Turbine • Design Objective • Replaces Pressure Reducing Valve with a Backpressure Steam Turbine • Mechanical Design Alternatives • Energy Analysis • First Costs • Life-Cycle Cost Analysis • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Hilton Baltimore Convention Center Hotel Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel 5

Mechanical Design Alternatives Mechanical Design Alternatives • Project Background Option 2: On Site Centrifugal Chilling • Existing Mechanical System • Replaces Comfort Link District Chilled Water System • Design Objective with (2) 950 ton centrifugal chillers • Mechanical Design Alternatives • (2) condenser water pumps along with two-celled cooling tower added • Energy Analysis • Primary / Secondary pumping arrangement • First Costs • (2) primary pumps added • Life-Cycle Cost Analysis • All secondary pumps remain • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel Hilton Baltimore Convention Center Hotel Mechanical Design Alternatives Mechanical Design Alternatives • Project Background Option 3: On Site Absorption Chilling • Existing Mechanical System • Replaces Comfort Link District Chilled Water System • Design Objective with (2) 950 ton double-effect absorption chillers • Mechanical Design Alternatives • Chillers utilize steam at 100 psi • Energy Analysis • (2) condenser water pumps along with two-celled cooling tower added • First Costs • Primary / Secondary pumping arrangement • Life-Cycle Cost Analysis • (2) primary pumps added • Electrical Breadth • All secondary pumps remain • Final Recommendation Andrew Rhodes Andrew Rhodes Hilton Baltimore Convention Center Hotel Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel 6

Mechanical Design Alternatives Mechanical Design Alternatives • Project Background Option 4: On Site Absorption Chilling with • Existing Mechanical System Backpressure Steam Turbine • Design Objective • Identical to previous design alternative, but with Backpressure Steam Turbine added • Mechanical Design Alternatives • Extraction type Backpressure Steam Turbine required, • Energy Analysis allowing for 2 separate outlet steam pressures • First Costs • Life-Cycle Cost Analysis • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel Hilton Baltimore Convention Center Hotel Energy Analysis Energy Analysis • Project Background • Existing Mechanical System In order to calculate the yearly operating costs of • Design Objective all the systems, two factors must be known… • Mechanical Design Alternatives • Cost of energy (Utility Rates) • Energy Analysis • Amount of energy (Hourly energy usage data) • First Costs • Life-Cycle Cost Analysis • Electrical Breadth • Final Recommendation Andrew Rhodes Andrew Rhodes Hilton Baltimore Convention Center Hotel Spring 2007 Spring 2007 Hilton Baltimore Convention Center Hotel 7