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Application of Ceiling Radiant Cooling in a University Environment

Application of Ceiling Radiant Cooling in a University Environment. ASHRAE Chicago Seminar 7, 1/26/03. Stanley A. Mumma, Ph.D., P.E. Professor, Architectural Engineering Penn State University email: sam11@psu.edu. Web: http://doas-radiant.psu.edu. Project Location.

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Application of Ceiling Radiant Cooling in a University Environment

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  1. Application of Ceiling Radiant Cooling in a University Environment ASHRAE Chicago Seminar 7, 1/26/03 Stanley A. Mumma, Ph.D., P.E. Professor, Architectural Engineering Penn State University email: sam11@psu.edu Web: http://doas-radiant.psu.edu

  2. Project Location • Engineering Unit B, a building built in the early 1900’s

  3. Some Space Attributes • Area • Height • Use • Occupants • Surroundings

  4. Project Objectives • Decouple the space sensible & latent loads • Control condensation • Experience ceiling radiant cooling • Check the capacity of radiant cooling • Check the acoustical qualities • M & O • Controllability • Educational tool for OPP, Students, PE’s • Demo Web based access

  5. DOAS/Radiant Cooling Schematic

  6. A Virtual Tour

  7. OA RA Enthalpy Wheel

  8. Off Design Day Performance

  9. What About Controls? • The control Panel

  10. Space Temperature & Condensation Prevention Control

  11. Enthalpy Wheel Control

  12. Experiences Since August ‘02 • Balancing the DOAS Air Flows • Operation under Manual Control, --EW! • Operation Of The Panel Control Valve When Placed In The Automatic Mode • Condensation Experiences • Moisture Migration Through the very Porous Envelope • Operation of the Enthalpy Wheel in the Winter.

  13. Experiences Continued • Sensible and Latent load decoupling • Acoustical Performance • Maintenance • Controls • Dirt and Drafts • Thermal Comfort

  14. Conclusions QUESTIONS • The system is working even better than expected! It is this speaker’s opinion that the system represents the next generation HVAC solution. • No barriers were observed in this project that would prevent the adoption of DOAS/Radiant systems by the HVAC Industry! • In the ALI-DOAS short course this afternoon at 2:00, I will have more time to lay out the entire approach. Join me if you want to learn more—or go to the DOAS web site!

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