NAME

Physics::Psychrometry - Perl extension for calculating Psychrometric measures for moist air

SYNOPSIS

  use Physics::Psychrometry;
  my $db = 24.6; # C
  my $rh = 0.68; # RH 0.0 to 1.0
  my $p = 102;   # kPa

  my $e = Physics::Psychrometry::dbrh2e($db, $rh);
  my $dp = Physics::Psychrometry::e2dp($e);
  my $wb = Physics::Psychrometry::dbdp2wb($db, $dp, $p);
  my $w = Physics::Psychrometry::e2w($e, $p);
  my $h = Physics::Psychrometry::dbw2h($db, $w);
  my $es = Physics::Psychrometry::t2es($db);
  my $v = Physics::Psychrometry::dbw2v($db, $w, $p);
  my $ws = Physics::Psychrometry::es2ws($es, $p);
  my $ds = Physics::Psychrometry::rhws2ds($rh, $ws);
  my $da = Physics::Psychrometry::wv2da($w, $v);
  my $q = Physics::Psychrometry::w2q($w);
  my $x = Physics::Psychrometry::wv2X($w, $v);

DESCRIPTION

Calculates a variety of Psychrometric values for moist air Blah blah blah.

EXPORT

None by default.

METHODS

dbrh2e

Convert dry bulb (C) and Relative Humidity (0.0 to 1.0) to vapor pressure (kPa)

    my $e = Physics::Psychrometry::dbrh2e($db, $rh);

e2dp

Convert vapor pressure (kPa) to Dewpoint (C)

    my $dp = Physics::Psychrometry::e2dp($e);

dbdp2wb

Convert dry bulb (C), Dewpoint (C) and airpressure (kPa) to wet bulb (C)

    my $wb = Physics::Psychrometry::dbdp2wb($db, $dp, $p);

e2w

Convert vapor pressure (kPa) and airpressure (kPa) to humidity ratio

    my $w = Physics::Psychrometry::e2w($e, $p);

dbw2h

Convert dry bulb (C) and humidity ratio to enthalpy (kJ/kg)

    my $h = Physics::Psychrometry::dbw2h($db, $w);

t2es

Convert dry bulb (C) to saturated vapor pressure (kPa)

    my $es = Physics::Psychrometry::t2es($db);

dbw2v

Convert dry bulb (C) and humidity ratio to specific air volume (m3/kg)

    my $v = Physics::Psychrometry::dbw2v($db, $w, $p);

es2ws

Convert saturated vapor pressure (kPa) to saturated humidity ratio

    my $ws = Physics::Psychrometry::es2ws($es, $p);

rhws2ds

Convert Relative Humidity (0.0 to 1.0) and saturated humidity ratio to degree of saturation (0.0 to 1.0)

    my $ds = Physics::Psychrometry::rhws2ds($rh, $ws);

wv2da

Convert humidity ratio and specific air volume (m3/kg) to density of moist air (kg/m^3)

    my $da = Physics::Psychrometry::wv2da($w, $v);

w2q

Convert humidity ratio to specific humidity (ratio)

    my $q = Physics::Psychrometry::w2q($w);

wv2X

Convert humidity ratio and specific air volume (m3/kg) to absolute humidity (kg/m3)

    my $x = Physics::Psychrometry::wv2X($w, $v);

SEE ALSO

Based on http://www.bae.uky.edu/gates/psych/PTM/dbrh2al.c

AUTHOR

Mike McCauley, <mikem@airspayce.com>

COPYRIGHT AND LICENSE

Copyright (C) 2007 by Mike McCauley

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.7 or, at your option, any later version of Perl 5 you may have available.

cpanm Physics::Psychrometry

perl -MCPAN -e shell
install Physics::Psychrometry