Decipole

A decipole , a term used in air conditioning , describes the perceived air quality . The statement is used to estimate how many people would rate the quality of the air in a room as "bad". The unit of measurement was introduced by Ole Fanger . The decipole is defined by the contamination of a room with an olf , which is supplied with ten liters of fresh air per second in a mixed ventilation process.

${\ displaystyle 1 \, \ mathrm {dp} = {1 \, \ mathrm {olf} \ over 10 \, {\ mathrm {l} \ over \ mathrm {s}}}}$

Measurement

The decipole is measured with a decipole meter. A decipolar meter consists of a glass that contains a material sample ( acetone and other odorous substances), a fan that forces air through the glass and a standardized funnel through which the air then escapes and can be taken in and assessed by a test person. The size and shape of the glass, type of sample, air volume and other parameters are monitored in order to be able to rule out any influence on the result. A “scent organ” with several outlets serves as a “milestone”. Different but constant concentrations of acetone are offered at different outlets, so that a comparison sample can be compared with these “milestones”.

literature

Hermann Rietschel , Horst Esdorn, Klaus Fitzner: Room air conditioning : Volume 1: Basics. Springer 1994. ISBN 3540544666 ( Google book search )
Wolfgang M. Willems, Simone Dinter, Kai Schild: Vieweg Handbook Building Physics 1: Heat and moisture protection, comfort, ventilation. Vieweg 2006. ISBN 3528039825 ( Google Book Search )
Manual for measuring perceived air quality . Hermann Rietschel Institute 2004. pdf

Individual evidence

^ PO Fanger (1988) Introduction of the Olf and Decipol Units to Quantify Air Pollution Perceived by Humans Indoors and Outdoors . In: Energy and Buildings 12; Pp. 1-6
↑ ^a ^b Frank Bitter, Olaf Böttcher, Arne Dahms, Johannes Kasche, Birgit Müller, Dirk Müller (2004) manual for measuring the perceived air quality ; Technical University of Berlin, Hermann Rietschel Institute, department of heating and ventilation technology; Online (PDF; 3.1 MB)

[1] PO Fanger (1988) Introduction of the Olf and Decipol Units to Quantify Air Pollution Perceived by Humans Indoors and Outdoors . In: Energy and Buildings 12; Pp. 1-6

[Herman-Rietschel-2] Frank Bitter, Olaf Böttcher, Arne Dahms, Johannes Kasche, Birgit Müller, Dirk Müller (2004) manual for measuring the perceived air quality ; Technical University of Berlin, Hermann Rietschel Institute, department of heating and ventilation technology; Online (PDF; 3.1 MB)