Application of Ceiling Radiant Cooling in a University Environment - PowerPoint PPT Presentation

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Application of Ceiling Radiant Cooling in a University Environment

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Professor, Architectural Engineering. Penn State University. email: sam11_at_psu.edu ... Engineering Unit B, a building built in the early 1900's. Some Space ... – PowerPoint PPT presentation

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Title: Application of Ceiling Radiant Cooling in a University Environment


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_at_psu.edu
Web http//doas-radiant.psu.edu
2
Project Location
  • Engineering Unit B, a building built in the early
    1900s

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, PEs
  • Demo Web based access

5
DOAS/Radiant Cooling Schematic
6
A Virtual Tour
7
Enthalpy Wheel
8
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9
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10
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11
Off Design Day Performance
12
What About Controls?
  • The control Panel

13
Space Temperature Condensation Prevention
Control
14
Enthalpy Wheel Control
15
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.

16
Experiences Continued
  • Sensible and Latent load decoupling
  • Acoustical Performance
  • Maintenance
  • Controls
  • Dirt and Drafts
  • Thermal Comfort

17
Conclusions
QUESTIONS
  • The system is working even better than expected!
    It is this speakers 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
    200, I will have more time to lay out the entire
    approach. Join me if you want to learn moreor
    go to the DOAS web site!
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