Infrared radiative cooling

Conference · Tue May 01 04:00:00 EDT 1979

OSTI ID:6359531

Berdahl, P; Martin, M

Measurements are reported of the thermal infrared radiance of the sky, at Tucson, AZ; San Antonio, TX; and Gaithersburg, MD. The spectral resolution is approximately 2 microns in the range of 8 to 20 microns. Samples of data show that a computer model of the atmosphere is capable of approximate prediction of the measurements if the meteorologic state of the atmosphere is completely known. Data for Gaithersburg and Tucson exhibit a correlation between the 8.1 to 13.7 micron radiance of the zenith and the all-wave (4-40 micron) radiance of the entire sky. This correlation suggests that it will become possible to use pyrgeometer data to estimate spectral radiation from different parts of the sky. The new information concerning infrared sky radiance obtained from the current measurements can be applied to improved estimates of infrared heat transfer from (i) passive radiative cooling systems, (ii) the outer glazing of solar collectors, and (iii) the external skin of buildings.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6359531
• Report Number(s): LBL-9315; CONF-790541-40
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
ARIZONA
CENTRAL REGION
COOLING
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
HEAT TRANSFER
INFRARED RADIATION
INFRARED SPECTRA
MARYLAND
NORTH AMERICA
RADIATIONS
RADIATIVE COOLING
SOUTHWEST REGION
SPECTRA
TEXAS
USA
WESTERN REGION