towson university center for the arts Benjamin Mitten

towson university center for the arts Benjamin Mitten Architectural Engineering Lighting/Electrical Spring 2005 Benjamin Mitten Spring 2005

center for the arts towson university Presentation Outline Introduction To The Building Lighting Depth - Paint Studio - Lobby Controls Depth Mechanical Breadth Benjamin Mitten Spring 2005

center for the arts Introduction To The Building Location towson university Center for the Arts Towson University 7815 Osler Drive Towson, MD 21252 Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts General Information towson university - Renovation of Existing Building Intro - 122, 000 sf addition onto the existing 166, 000 sf building. - Total project budget of $42 million - Major Project Team -Owner: Towson University -Architects: Design Collective, Inc. Wilson Butler Lodge - Construction Manager: Gilbane - MEP: Mueller Associates, Inc. - Structural: Delon Hampton & Assoc. - Occupants of the Building - Dance Program - Art Program - Music Program - Theatre Program Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Building Layout Intro Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Presentation Outline Introduction To The Building Lighting Depth - Paint Studio - Lobby Controls Depth Mechanical Breadth Benjamin Mitten Spring 2005

center for the arts Paint Studio towson university Location: 4 th Floor of the North-East Section of the building. Intro Paint Studio Space Characteristics: - Approximately 2100 sf. - North wall consists of a glazed curtain wall - Exposed ceiling at a height of 14’-6” - Floor Easels in the space Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Paint Studio Intro Tasks - Painting- Objects, Figures, Human Figures, etc. - Pin- ups/ Presentations - Film Presentations Design Criteria - Provide light for correct color appearance and contrast - Lighting for facial modeling and objects - Distribution of light on easels - Illuminance of 50 fc horizontally and 30 fc vertically - Achieve a clear appearance - Power Density of 1. 2 Watts/SF Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Paint Studio Intro Solution 54 Watt Indirect Fluorescent Pendent Fixture with electrical on underside track 90 Watt Spot light on track Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Paint Studio Intro Power Density Calculation Luminaire Type # of Luminaires Input Watts/Fixture Total Watts A 41 61 2501 B 7 90 630 Square Feet of Room 2100 Power Density (W/sf) 1. 49 The power density is above the recommended ASHRAE/IES Standard 90. 1 value of 1. 2 Watts/ Square Foot. Redesigning would be necessary to reduce this in the space. Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Paint Studio Renderings Intro Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Presentation Outline Introduction To The Building Lighting Depth - Paint Studio - Lobby Controls Depth Mechanical Breadth Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Lobby Location: 3 rd Floor, center of the building Intro Lobby Space Characteristics: - Approximately 4800 sf. - Cantilevered awnings over the entrances of four major spaces; Concert Hall, Main Stage Theatre, Recital Hall, Studio Theatre - Finished Stone Floor Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Lobby Intro Tasks - Circulation space – provides access to the Concert Hall, Recital Hall, Main Stage Theatre, and the Studio Theatre. It also services the corridors to areas such as the Fine Arts Box Office and Painting Galleries - Social Gathering - Reading Design Criteria - Most important space in the building - Provide a visibly pleasing atmosphere - Achieve a relaxed, spacious, and public appearance - Draw people towards areas of interest - Power Density of 1. 6 Watts/ SF Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Lobby Intro Solution 32 Watt Fluorescent Strip light for cove lighting 42 Watt Compact Fluorescent Downlight 18 Watt Compact Fluorescent Downlight Neon Light Tubes for accent Provide different “scenes” for different events Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Lobby Intro Power Density Calculation Luminaire Type # of Luminaires Watts/Fixture Total Watts A 54 34 1836 B 81 42 3402 C 57 18 1026 D 4 8. 31 33. 24 Square Feet of Room 4800 Power Density (W/sf) 1. 31 The power density is below the recommended ASHRAE/IES Standard 90. 1 value of 1. 6 Watts/ Square Foot. Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts Lobby towson university Renderings Main Concert Studio Recital Stage Theatre Hall. Scene Intro Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Lobby Intro Other scenes provided - Egress scene IES Illumination Recommendations Lobby – 10 footcandles Illuminance values for scenes Egress scene- 9. 9 fc OK All other scenes- all were around 28 fc OK Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Presentation Outline Introduction To The Building Lighting Depth - Paint Studio - Lobby Controls Depth Mechanical Breadth Conclusion Benjamin Mitten Spring 2005

center for the arts Controls towson university Most of the energy consumption in a commercial building comes from lighting. Intro Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Controls Intro Analyze an advanced digital control system on the 3 rd floor of the building Assumptions made in-order to perform the analysis - System will examine the Linear Fluorescent Fixtures only - The system will cause a 10% reduction in lighting energy (expected to be more than assumed value) - Compact Fluorescent fixtures will be connected to the system at a later time ( CF ballasts are not compatible at this time) Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Controls Intro Type of controls used in spaces - Photocells (Daylight Control) - Automated Occupant Control - Occupancy Sensors (Manual Dimming and Shut-off) - Single Standard Switch (with indicating light) Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Controls Intro Use of the system - Up to 64 Ballasts on a power supply - Each ballast is digitally programmed to respond/”speak” to certain control sensors. Photocells, etc. - Reprogramming an entire floor is easy and does not need to be rewired. (Extremely practical for open office use where reconfiguration of the space may occur) - Each ballast in the power supply loop can respond to any sensor in the loop - Easily reprogrammable - Sensors simply plug into ballasts Connection from direct components Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Controls Intro Control Loop Circuits - 27 control loops - exclusion of Lobby, Concert Hall, Recital Hall, Main Stage Theatre, and Main Studio Theatre. Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Controls Intro 1 Lamp Ballasts 2 Lamp Ballast 3 Lamp Ballasts Occupancy Sensors IR & Personal Control Budget Cost Total Cost Quantity Cost Quantity Cost Regular System 200 $99 839 $99 657 $139 42 $120 91 $53. 30 - $204, 074 Advance System - - - - - $175, 200 The initial cost savings of the advanced system is approximately $29, 000 Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Cost analysis for 10% energy reduction. Intro Analysis is for the MOST EXTREME CASE with the lights on, 18 hours a day, 7 days a week, 52 weeks a year. Total KW Used Cost Per Hours/Day Days/Weeks/Year Cost Per Year Full Watt Output of the System 124 $8. 66 18 7 52 $56, 736 10% Reduction in Energy Consumption 111 $7. 79 18 7 52 $51, 062 Cost savings per year is approximately $5, 000. - Cost savings will increase if the system is implemented the entire building - Cost difference decreases as hours, days and weeks are Paint Studio Lobby Controls Mechanical Conclusion throughout reduced. Benjamin Mitten Spring 2005

center for the arts Controls towson university Major Advantages Intro - easy ballast replacement and no reprogramming - easy installation and connection of sensors - sensors are easily added as needed - extreme savings in the initial cost as well as annual savings - gives control of individual spaces to users if desired which improves comfort and in-turn increases productiveness Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Presentation Outline Introduction To The Building Lighting Depth - Paint Studio - Lobby Controls Depth Mechanical Breadth Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Mechanical Intro Addition of a Heat Recovery Unit on a 100% OA existing air handling unit. The Enthalpy Wheel Efficiency for this analysis is assumed to be 80 % The indoor and outdoor air conditions for Baltimore Maryland are shown in the tables below. Indoor Air Conditions Temp Enthalpy Humidity Ratio Density ºF btu/lb gr/lb lb/ft^3 75 28. 14 64. 89 0. 073 Outdoor Air Conditions for Baltimore MD. Paint Studio Lobby Temp (Dry Bulb) Temp (Wet Bulb) Enthalpy Density ºF ºF btu/lb lb/ft^3 93 75 38. 41 0. 07 Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Mechanical Intro The exhaust air for heat recovery is not constant air volume so a maximum and minimum amount of recoverable heat is determined off of cross flow ratios. The Maximum cross flow was determined to be 48, 000 cfm. The minimum cross flow was determined to be 15, 500 cfm. Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Mechanical Intro Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Mechanical Intro The design for the new AHU will be designed for 15, 500 cfm. The table below shows the Coil Load reduction and the reduction of energy. The reduction of the coil is approximately 16%. Coil Analysis Paint Studio Supply Air Enthalpy Coil Load (max) Coil Load (Min) Coil Load (no recovery) btu/lb Tons 22. 00 231. 12 34. 51 275. 69 Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Presentation Outline Introduction To The Building Lighting Depth - Paint Studio - Lobby Controls Depth Mechanical Breadth Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Recommendations Intro - The lighting design in the Paint Studio should be redesigned to meet the Power Density requirements - The lighting design in the lobby parallels the design criteria - The advanced control system should be implemented through out the whole building - An energy wheel should be added to the existing AHU to reduce coil size and save energy Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

center for the arts towson university Acknowledgments Intro AE Department and Faculty TA Engineering Alan Zemla Jim Moore Mueller Associates, Inc. Todd Garing and Ken Rock Towson University Dennis Bohlayer Lutron Electronic Company, Inc. Family and Friends Paint Studio Lobby Controls Mechanical Conclusion Benjamin Mitten Spring 2005

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