Advertisement

Applied Scientific Research, Section A

, Volume 4, Issue 2, pp 120–126 | Cite as

An oscillating psychrometer for micro-meteorological purposes

  • C. T. De Wit
Article

Summary

A Psychrometer is described which is adequately ventilated by oscillating the dry and wet thermocouples with an amplitude of about 1.5 cm and a frequency of about 40 hertz. The temperature and humidity profile is destroyed to a far less extent with this meter than with Psychrometers ventilated in the ordinary way. It has been shown that the true vapour pressure of the air is measured by means of an irradiated Psychrometer if the dimensions and the reflection coefficients of the dry and wet bulbs are the same.

Keywords

Reflection Coefficient Forced Convection Heat Budget Thermocouple Wire Continuous Registration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1).
    Powell, R. W., Proc. phys. Soc.48 (1936) 406.CrossRefADSGoogle Scholar
  2. 2).
    Held, E. F. M. van der, Bevochtigen en drogen. Voordrachten Vacantieleer-gang voor Verwarmingstechniek 1951, p. 29.Google Scholar
  3. 3).
    McAdams, W. H., Heat transmission. New York and London 1942.Google Scholar
  4. 4).
    Franssila, M., Mikroklimatische Untersuchungen des Wärmehaushalts. Mitteilungen der Meteorologische Zentralanstalt No. 20, Helsinki 1936.Google Scholar
  5. 5).
    Peerlkamp, P. K., Bodemmeteorologische onderzoekingen te Wageningen. Med. L.H.S.47 (1944), Verh. 3.Google Scholar

Copyright information

© Martinus Nijhoff, The Hague/Kluwer Academic Publishers 1953

Authors and Affiliations

  • C. T. De Wit
    • 1
  1. 1.Laboratory of Physics and Meteorology, Agricultural Physico-Technical ServiceAgricultural UniversityWageningenHolland

Personalised recommendations