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Hvac presentation
- 1. S Siemens Room Renovation HVAC System DonaldMorgan Nick Hunt Steven Kinney David Amrhein
- 2. Problem Statement S PSHM&O renovated room E 219 in the Olmsted Building S The group is responsible for the HVAC portion S The existing fan coil system needed to be replaced or upgraded S Two ME teams formed S HVAC S Controls
- 3. Teams Involved S METeams – analyzing old and new system and choosing a suitable control system. S EE – 2 teams choosing wiring and lighting systems for the room.
- 4. Scope S Research 3different systems and determine which works best S Install and commission HVAC system by end of Spring 2015 semester S Benchmark the newly installed system
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- 6. Alternatives S Three differentsystems were considered. S Two pipe fan coil system S Variable air volume system S Chilled beam system S The updated Fan Coil system was determined to be the most cost effective solution.
- 7. Alternatives Metric Installation Cost Energy Efficienc y Maintenanc e Space Requirement s Total Fan Coil 1 31 1 6 Variable Air Volume (VAV) 2 2 2 3 9 Chilled Beam 3 1 3 2 9 * This scale used 1 as the best and 3 as the worst. Once each category was scored for each system, a total was taken and the system with the lowest score was chosen.
- 8. Installation Cost S FanCoil- basically already in place. Plumbing for units are already installed in room. S VAV- would require large ductwork and unit. Higher cost to retrofit. S Chilled Beam- highest cost. would require plumbing fitting above ceiling. Higher cost to retrofit. Would also require an additional system to handle humidity.
- 9. Energy Efficiency S FanCoil- least efficient units to run. They rely the most on electricity to circulate air. S VAV- most efficient system. Keeps air at constant temperature and varies fan speed to regulate temperature. S Chilled Beam- requires fans to circulate heated air around room during winter.
- 10. Maintenance S Fan Coil-easiest and safest to maintain. Conveniently accessible filters, located on ground level along walls. S VAV- located above ceilings, reaching filters requires ladders, increased fall risk, working above-head. S Chilled Beam- requires working at ceiling level on ladder, increased fall risk, most cleaning required.
- 11. Space Requirements S FanCoil- least amount of space required, retrofits very easily. No above-ceiling additional ductwork or equipment required. S VAV- requires the most above ceiling ductwork and equipment. Making everything easily accessible would be difficult. S Chilled Beam- would require additional plumbing as well as chilled beams installed in ceiling. (42 ft of beams necessary to effectively cool room)
- 12. Final Choice: FanCoil Units S FCBB0601C**ABH10AC3M00— 01x00H30000000000000 S B: Cabinet type: Vertical S 060: Unit Size: 510 cfm; 48.02 MBh S C: Coil: 4 Row Hot Water
- 14. Manual Calculations S ASHRAE62.1 Ventilation Standards S Vbz = RpPz+RaAz S =(7.5*60)+(.06*1075)=514.5 cfm S 12” x 5.5” Duct will deliver 260 cfm of airflow to the room.
- 15. Energy Calculations S EnergySavings: S Lighting Controls: electricity reduction of 10% S => 795 Btu/h = 1.45 million btu/year = cost saving of $56 S Temperature Controls: Temperature drift from 68°F to 72°F S => 510.3 Btu/h = .93 million btu/year = cost saving of $36 S Total: If implemented for 10hr/day around $93 per room can be saved over the warmest part of the year.
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- 18. Benchmark Criteria S CeilingDiffusers S Right Side - 240 cfm S Front Wall – 530 cfm S Left Side – 230 cfm S Fan Coil Units S High – 780 S Medium - 575 cfm S Low – 435 cfm S Lighting – 86.7°F
- 19. Revit Drawing ofOlmsted 219E
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