A novel pyrheliometer of high accuracy

✍ Scribed by Z.M. Zhang; X.S. Ge; Y.F. Wang

• Book ID: 104167702
• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 380 KB
• Volume: 39
• Category: Article
• ISSN: 0038-092X
• DOI: 10.1016/s0038-092x(87)80055-5

✦ Synopsis

In this paper, analyses have been carried out for a novel blackbody model; which is made by employing a hemispheric mirror. It is calculated that the effective absorptance of the model can approach unity by correctly choosing the coatings and the geometric parameters. Based on the analyses, a new type of absolute pyrheliometer was designed and constructed. The uncertainty of the device is indicated to be +-0.4%. Comparisons have been made with cavity-type pyrheliometers. The agreement is satisfactory.