Tubular Daylighting Devices Project
Monitoring Task Group
SCOPE
The objective of this
project is to develop a standard test method and procedure to
measure the thermal transmittance (U-Factor) of TDD products under
typical residential application conditions. A TDD test apparatus
shall be designed and constructed. Calibration on the test apparatus
heat loss and specimen surface heat transfer coefficients shall
be conducted. Representative manufacturer’s TDD products
shall then be tested using this test apparatus. These products
also shall be simulated following the NFRC simulation procedure
for TDD products. Detailed comparison study on heat flow, temperatures,
surface heat transfer coefficients, and U-factors shall be conducted
between experimental and simulation results. Conclusions and recommendations
shall be drawn and proposed to NFRC for the validation and improvement
of the TDD U-factor simulation procedure.
Status
All testing is complete
and a final report is finished and was presented at the Spring
2006 Membership meeting. Final test procedures are being
developed with a Spring 2007 presentation expected.
Contract
TDD
Validation Reserach and Test Procedure Development
Meeting Notes
Documents
Task Group Participants
- Dave DeBlock
(chair)
- Mike Thoman
(ATI-PA, contractor)
- Charlie Curcija
- Larry Livermore
- Paul Jaster
- J. Feudner
- Brad Schultz
- E. Rich
- John Lawton
- Mahabir Bhandari
- Marcia Falke
- Noel King
- Paul Jaster
- Peter Lyons
- Richard Williams
- Ross McCluney
- Sheila Gore
- Valentine Azbelle
- Willie duPont
- Ray McGowan
(staff)
This task group reports
to:
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