Derek Sitosky Lighting/Electrical von Liebig Center for Science

Derek Sitosky Lighting/Electrical von Liebig Center for Science

Derek Sitosky Lighting/Electrical von Liebig Center for Science the newest addition to Juniata College. Its classic brick faade and look fits perfectly within the historical campus architecture. The building is mostly composed of laboratory spaces, which house the chemistry and biology departments. Over the past two summers I had the chance to work on larger lab facilities for NIH and UCLA so it was only fitting to continue in the laboratory field. Design Team - Owner: Juniata College - Civil Engineer: Keller Engineers - Structural Engineer: Fink, Roberts & Petrie, Inc. - M.E.P. Engineer: Burt Hill Kosar Rittelmann Assoc. - Lab Consultant: Research Facilities

Design - Architect: Hastings & Chivetta Focus Lighting Chemical Synthesis Lab Comparison Between two layouts. Lecture Hall Breadth Mechanical Enthalpy Wheel LEED Study Criteria Blend in with Older Surroundings Classic Cost Effective And

Low Energy Functionality Cool CHEMICAL SYNTHESIS LAB Layout 1 Fixtures Pendant 59.7W 2T8 Bench Strip 42W T12 Lab Bench Layout and Switching Semi indirect pendant Fixtures are mounted between the lab benches. Each side of the lab bench utilizes

an overhead strip providing light directly to the bench surface There are two rows of lamps per pendant. Lamp rows are switched separately from one another. These switches are found at each of the three doors. The strip lights are controlled at each end of the bench. This switching method will provide the required light levels for both experimental and normal class use. Light Levels Power Density Bench Strip: 42W x 24 = 1008W Pendant: 59.7W x 24 = 1432.8W Total = 2440.8W Square Feet = 1430

1.70 W/ft^2 ASHRAE 90.1 for a classroom 1.8 W/ft^2 Layout 2 2x2 Recessed Parabolic Troffer 3 17W Fluorescents Layout and Switching 2x2 Fixtures are mounted around lab benches on a 2 grid. Fixtures are wired in tandem with one switch controlling the innermost lamp and the other controlling the two outer lamps of each fixture. Switches are located at each of the three doors.

This switching method will provide the required light levels for both experimental and normal class use. Light Levels Power Density 2x2: 71W x 36 = 2556W Square Feet = 1430 1.8 W/ft^2 ASHRAE 90.1 for a classroom 1.8 W/ft^2 LECTURE HALL Downlight 42W Triple Tube Compact Fluorescent Wallwasher 35W T16 Fluorescent

Layout 6 Downlight 4 Wallwashers Switching Power Density Downlights: 48W x 66 = 3168W Wallwasher: 39W x 5 = 195W Total = 3363W Square Feet = 2400ft^2 1.4 W/ft^2 ASHRAE 90.1 for a classroom 1.6 W/ft^2 Mechanical Enthalpy Wheel Rotary heat exchangers revolve in a plane perpendicular to the airflow and work off of exhausted air on the principle of

sensible and latent energy transfer. Harnessing this wasted energy by means of an aluminum wheel and desiccant material helps cool and heat the flow of air into the building. The Science Center currently supplies its spaces with outdoor air as well as return air from various spaces. Many of the spaces are labs in which air must be exhausted and cannot be directly put back into the system. The proposed heat exchanger will work off of this exhausted air. Schematics The system recovers both sensible and latent energy from the exhaust air. Sensible energy is captured on the aluminum wheel and as the wheel turns, it transfers this energy to the outside air stream coming into the building. The latent energy is captured in a similar manner. The desiccant absorbs moisture from a stream with high vapor pressure and desorbs it to the lower vapor pressure stream. Psychometrics Design conditions: 75F DB 62.5F WB and 64.9Gr/lb.

Savings Cooling HOURS DB (F) W (Gr/lb) WB (F) 1 2 91 89.5 2 1 9 11 27 23 28 49 74 101 95

134 122 87.4 80.1 83.1 81.3 78.5 80.4 82.3 76.8 77.8 75.4 75.6 73.4 71.9 152.5 147.5 142.5 137.5

132.5 127.5 122.5 117.5 112.5 107.5 102.5 97.5 92.5 87.5 82.5 77.5 81 80 78 75.5 75.5 74.2 72.6 72.3

72 69.6 69 67.4 66.5 64.8 63.3 . ROOM ROOM W ROOM DB (F) (Gr/lb) WB (F) 75 75 75 75 75 75 75 75

75 75 75 75 75 75 75 75 64.90 64.90 64.90 64.90 64.90 64.90 64.90 64.90 64.90 64.90 64.90 64.90

64.90 64.90 64.90 64.90 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50 62.50

SENSIBLE SAVINGS (BTU/h) 489024 443178 -2292300 378994 155876 247568 192553 106974 165046 223117 55015 85579 12226 18338 -48902 -94748

COOLING/DEHUMIDIFICATION AHU 1 LATENT SENSIBLE LATENT SENSIBLE LATENT SENSIBLE LATENT SENSIBLE TOTAL LATENT SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS ($) (BTU/h) (TON) (TON) (TON HRS) (TON HRS) (kWh) (kWh) ($) ($) 1685774 41 140 41 140 33 112

2.28 7.87 10.15 1589554 37 132 74 265 59 212 4.14 14.84 18.97 1493334 -191 124 0 0 0 0 0.00

0.00 0.00 1397114 32 116 63 233 51 186 3.54 13.04 16.58 1300894 13 108 13 108 10 87 0.73 6.07

6.80 1204674 21 100 186 904 149 723 10.40 50.60 60.99 1108454 16 92 177 1016 141 813 9.88 56.90 66.79

1012234 9 84 241 2278 193 1822 13.48 127.54 141.02 916014 14 76 316 1756 253 1405 17.71 98.32 116.03 819794

19 68 521 1913 416 1530 29.15 107.12 136.27 723574 5 60 225 2955 180 2364 12.58 165.46 178.04 627354 7

52 528 3869 422 3095 29.55 216.65 246.20 531134 1 44 103 4470 82 3576 5.76 250.34 256.10 434914 2 36

145 3443 116 2754 8.13 192.81 200.94 338694 -4 28 -546 3782 -437 3026 -30.58 211.80 181.22 242474 -8 20 -963

2465 -771 1972 -53.94 138.05 84.11 TOTAL COOLING SAVINGS $1,720.21 AHU-1 $1,720.21 AHU-2 $1,275.31 AHU-1 141 ton AHU-2 134 ton Savings Heating . ROOM ROOM W ROOM HOURS DB (F) W (Gr/lb) WB (F) DB (F) (Gr/lb) WB (F) 116

211 261 291 298 250 136 27 54.7 50.9 46.5 41 36.7 27 18 4.4 37.5 32.5 27.5 22.5

17.5 12.5 7.5 2.5 46.9 43.6 39.9 35.2 31 23.2 14.9 1.9 75.00 75.00 75.00 75.00 75.00 75.00 75.00

75.00 64.90 64.90 64.90 64.90 64.90 64.90 64.90 64.90 62.5 62.5 62.5 62.5 62.5 62.5 62.5 62.5 SENSIBLE

SAVINGS (BTU/h) 9169.2 125312.4 259794.0 427896.0 559321.2 855792.0 1130868.0 1546538.4 HEATING/HUMIDIFYING AHU 1 HUMID. SENSIBLE HUMID. SENSIBLE SAVINGS SAVINGS SAVINGS SAVINGS (GRAINS) (TON) (lbs) (TON HRS) 22 0.76

0.00 88.6 26 10.44 0.00 2203.4 30 21.65 0.00 5650.5 34 35.66 0.00 10376.5 38 46.61 0.01 13889.8 42 71.32 0.01

17829.0 46 94.24 0.01 12816.5 50 128.88 0.01 3479.7 HUMID. SAVINGS (BTU/h) 3.13 3.70 4.27 4.85 5.42 5.99 6.56 7.13

AHU-1 $3875.25 AHU-2 $2977.42 AHU-1 1,546,538.4 BTU/h AHU-2 1,172,746.1 BTU/h Total Savings $9848.19 SENSIBLE HUMID. SENSIBLE TOTAL LATENT SAVINGS SAVINGS SAVINGS SAVINGS SAVINGS ($) (kWh) (kWh) ($) ($) 71 105.90

4.96 7.41 12.38 1763 227.79 123.39 15.94 139.34 4520 325.24 316.43 22.77 339.20 8301 411.11 581.08 28.78 609.86 11112 470.64 777.83

32.95 810.77 14263 436.48 998.42 30.55 1028.98 10253 260.10 717.72 18.21 735.93 2784 56.14 194.86 3.93 198.79 TOTAL HEATING SAVINGS $3,875.25 LEED Study

LEED, Leadership in Energy and Environmental Design, is a rating system developed by the U.S. Green Building Council to assess the environmental sustainability of building designs. LEED is based on points that are earned for building attributes considered environmentally beneficial. LEED has six credit categories on a 69-point scale. These areas include: sustainable sites, water efficiency, energy & atmosphere, materials & resources, indoor environmental quality and innovation & design process. Benefits Environmental Enhance and protect ecosystems and biodiversity Improve air and water quality Reduce solid waste Conserve natural resources Economical Reduce operating costs Enhance asset value and profits

Improve employee productivity and satisfaction Optimize life-cycle economic performance Health and Community Benefits Improve air, thermal and acoustic environments Enhance occupant comfort and health Minimize strain on local infrastructure Contribute to overall quality of life Environmental Water Savings Recycled Rainwater Catch the rainwater from the roof via a gutter and pipe system to storage tanks. The rainwater will be used to irrigate landscaping in the courtyard as well as to the near-by football field. Tanks could be hidden underground or under the football field bleachers. Waterless Urinals Waterless urinals save on average 45,000 gallons of water a year per urinal

(1.5-3 gallons a flush). These urinals install just like their water counterparts but they eliminate the flush water supply lines and valves. The urinal surfaces are treated with a urine repellent substance that takes the place of flushing water Economical Energy Performance Most of the building was within ASHRAE 90.1 1999 standards however spaces like laboratories and lecture halls were reduced. Lighting lodes were reduced by 5%. In addition to lighting loads, the use of an enthalpy wheel reduces chiller and boiler loads. Measurement and Verification By measuring and monitoring how much water and energy is consumed, building owners can predict usage and develop ways to save energy. This performance data can be compared to operation reduction goals.

Health and Community Benefits CO2 Providing CO2 monitoring raises indoor air quality thus sustaining longterm occupant comfort and well being. CO2 HVAC Controls sensor is designed to monitor carbon dioxide CO2 levels in the air and interface with the ventilation damper in an HVAC system. These levels can be used as input to a controller to control the ventilation damper position and ensure an adequate level of outside air in the building. Low Emitting Materials: Paints, Carpets, Adhesives, Wood Reduce the quantity of indoor air contaminants that are odorous, potentially irritating, and/or harmful to the comfort and well-being of installers and occupants. This can be achieved by specifying low-voc materials. Low-voc means low volatile organic compounds Conclusion Thanks To Burt Hill Kosar Rittelmann Assoc

Juniata College AE Staff

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