The Abbot silver-disk pyrheliometer. Subjects: Pyrheliometer. Note: At head of title: Hodgkins Fund. Publication Physical Description: 11 p. illus. 24 cm. Get this from a library! The Abbot silver-disk pyrheliometer (with one plate). [Loyal Blaine Aldrich; Smithsonian Institution. Hodgkins Fund.]. Subject: 14 SOLAR ENERGY; PYRHELIOMETERS; DESIGN; MEASURING INSTRUMENTS; TELESCOPES * — Solar Energy– Resources & Availability.
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The preceding discussion dealt entirely with measurements of total radiation on a horizontal surface. The Ll-COR instrument is fitted with an acrylic diffuser that substantially removes the dependence of response on the angle of incidence of the radiation.
Details Additional Physical Format: Home About Help Search. See Stewart et ai.
The Abbot silver-disk pyrheliometer – Loyal Blaine Aldrich – Google Books
When there babot no difference in temperature, the electrical energy to the shaded strip must equal the solar radiation absorbed by the exposed strip. Please re-enter recipient e-mail address es. The specific requirements or preferences of your reviewing publisher, classroom pyrheliometr, institution or organization should be applied.
Add a review and share your thoughts with other readers. Solar energy, helio systems, solar panels, collectors, equipment for water heating and space heating using solar energy and everything about solar energy.
The detectors for these instruments must have a response independent of wavelength of radiation over the solar energy spectrum. You may have already requested this item. Adapted from Couhon. Other Growth Functions March 17th, The logistic growth function is no doubt far from being a perfect approximation to the growth of the [ Courtesy of The Eppley Laboratory.
Don’t have an account? Gate and precision are required in these abbto. Finding libraries that hold this item An example of shade ring correction factors, to illustrate their trends and magnitudes, is shown in Figure 2. However, formatting rules can vary widely between applications and fields of interest or study.
However, it is importan [ Reviews dixk the accuracy of these instruments and intercomparisons of hem led to the conclusions that measurements made on SSI3 were 3. Would you also like to submit a review for this item?
In this instrument the assembly of copper diaphragms and case has very large thermal capacity, orders of magnitude more than the hot junctions. English View all editions and formats.
A cross section of a recent model of the Eppley is shown in Figure 2. The Abbot silver-disk pyrheliometer with one plate Author: You may use these HTML tags and attributes: It is difficult to generalize from the few data available, but it appears that thin clouds or haze can affect the angular diskk of rotation within the field of view of standard pyrheliomeiers.
Instalments for measuring total beam plus diffuse radiation are referred to as pyranom- eters, and it is from these instruments that most of the available data on solar radiation are obtained. Allow this favorite library to be seen by others Keep this favorite library private. slver
Another type of pyranometer is based on photovoltaic solar ceil detectors. Find more information about: A shutter alternately admits radiation and shades the detector at regular intervals; the corresponding changes in disc temperature are measured and provide the means to calculate the absorbed radiation. The corrections are based on assumptions of the distribution of diffuse radiation over the sky and typically are factors of 1.
Pyrheliometer, Silver Disk
Find a copy online Links to this item library. This instrument uses a cylindrical blackbody cavity to absorb radiation that is admitted through a collimating tube.
Government publication, National government publication, Internet resource Document Type: Preview this item Preview this item. It is pyrheliomeher to use a potentiometer to detect and record this output. Please verify that you are not a robot.
Find a copy in the library Finding libraries that hold this item Search WorldCat Find items in libraries near you. The Bellani spherical distillation pyranometer is based on a different principle.
Advanced Search Find a Library. It is shown in Figure 2. Solar radiation is determined by equating the electrical energy to the product of incident solar radiation, strip area, and absorptance. It is possible to add temperature compensation to the external circuit and remove this source of error.
Adapted from Stewart el at. This is usually done by means of a shading ring, as shown in Figure 2. Citations are based on reference standards.