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 Angstrom instrument serves, in principle, as an absolute or primary standard. Preview this item Preview this item. Solar energy, helio systems, solar panels, collectors, diak for water heating and space heating using solar energy and everything about solar energy.
PYRHELIOMETERS AND PYRHELIOMETRIC SCALES
Please enter your name. Another class of purheliometer, originally designed by Robtlzsch, utilizes detectors that are bimetallic elements heated by solar radiation: Finding libraries that hold this item Standard and secondary standard solar radiation instruments are pyrheliometers.
Your rating has been recorded. Another type of pyranometer is based on photovoltaic solar ceil detectors.
These instruments have the advantage of being entirely spring driven and thus require no electrical energy. Other Growth Functions March 17th, The logistic growth function is no doubt far from being a perfect approximation to the growth of the [ The side purheliometer to radiation is blackened, and the bulb of a precision mercury thermometer is inserted in a hole in the side of the disc and is in good thermal contact with the disc.
Silver-disk pyrheliometer – AMS Glossary
Smithsonian miscellaneous collectionsv. Citations are based on reference standards. Two of these secondary standard instruments are of importance.
The Abbot and AngstrSm instruments arc used as secondary standards for calibration of other instruments, and there Is a pyrheliometrlc scale associated with each abbot them. You may send this item to up to five recipients. Government publication, National government publication, Internet resource Document Type: The name field is required.
The Abbot silver-disk pyrheliometer (with one plate) (eBook, ) 
After a determination is made, the position of the shutter is xilver to. The Bellani spherical distillation pyranometer is based on a different principle. With one strip shaded and one strip exposed to radiation, a current is passed through the shaded strip to heat It to the same temperature as the exposed strip.
It is necessary to use a potentiometer to detect and record this output.
Pyrheliometer, Silver Disk
The abbkt of alcohol condensed is a measure Of integrated solar energy on the spherical receiver. Write a review Rate this item: Details Additional Physical Format: Data on the total energy received by a body, dsk represented by the sphere, are of interest in some biological processes.
WorldCat is the world’s largest library catalog, helping you find library materials online. Much of the available radiation data prior to is probably not this good, largely because of infrequent calibration and in some instances because of inadequate integration procedures.
There is evidence that the calibration of pyranometers changes if the instrument is inclined to the horizontal. Please choose whether or not you want other users to be able to see on your profile that this library is a favorite of yours. Tire main disadvantage of photovoltaic detectors is their spectrally selective response.
They are less precise instruments than the thermopile instruments and have some limitations on their use. Their response to changing radiation levels is essentially instantaneous and is linear with radiation. Measurements of diffuse radiation can be made with pyranometers by shading the instrument from beam radiation.
Please select Ok if you would like to proceed with this request anyway. The sphere is connected to a calibrated condenser receiver tube.
Logistic Growth March 16th, The starting point for describing the evolution of a renewable resource stock is the logistic growth [ The design was modified by Abbot in to include the use of two thermally identical chambers, dividing the cooling water between them and beating one chamber electrically while the other is heated by solar radiation; when the instrument is adjusted so as to make the heat produced in the two chambers identical, the electrical power input is a measure of the solar energy absorbed.
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. Please enter the message. Reviews User-contributed reviews Add a review and share your thoughts with other readers. Please re-enter recipient e-mail address es. Aldrich, Loyal Blaine, It is normally connecte [ If the spectral distribution of incident radiation was fixed, a calibration could be established that would remain constant; however, there are some variations in spectral distribution2 with clouds and atmospheric water vapor.
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It is iccommended that shading be accomplished by means of a disc held I m from the pyranometer with the disc just large enough to shade the glass envelope.