8/16/2019 Btu Calculations

1/2

Water Properties Estimation

Temperature (deg R) Specific Heat (BTU/lbm-degR) ensit! (lbm/ft"#)

$%& '* *+$+

&$ %%, *++#

&,& %%% *'*'

*# '+ *%

*& ', &%*

+ '' &,&&

& ' '& + +& #

%,&

%%

%%&

'

'&

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''&

'+

f(.) / #&&*#*,$#%$E-''."$ - +##+,#'*E-,."# 0 *#''$'&$'&E-*."+ - *,$,&&. 0 '+#+*&*%R1 / %%,#%''

Specific Heat of Water 

Specific Heat

Pol!nomial(Specific Heat)

Average Temp (deg F)

   C  p   (   B   T   U   /   l   b  m -   d  e  g   R   )

& ' '& + +& #

&*

&

&,

&%

*

*'

*+

*#

f(.) / - &%$#&*+*'++%'&E-&."+ 0 *'*+*'++%++*E-&. 0 *+$'*,$$R1 / %%%'+##,,

De!it" of Water 

ensit!

Pol!nomial(ensit!)

Average Temp (deg F)

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  "   (   l   b  m   /   f   t   #   $   )

8/16/2019 Btu Calculations

2/2

Water Properties Estimation

Temperature (deg R) Specific Heat (BTU/lbm-degR) ensit! (lbm/ft"#)

$%& '* *+$+

&$ %%, *++#

&,& %%% *'*'

*# '+ *%

*& ', &%*

+ '' &,&&

& ' '& + +& #

%,&

%%

%%&

'

'&

''

''&

'+

f(.) / #&&*#*,$#%$E-''."$ - +##+,#'*E-,."# 0 *#''$'&$'&E-*."+ - *,$,&&. 0 '+#+*&*%R1 / %%,#%''

Specific Heat of Water 

Specific Heat

Pol!nomial

(Specific Heat)

Average Temp (deg F)

   C  p   (   B   T   U   /   l   b  m -   d  e  g   R   )

& ' '& + +& #

&*

&

&,

&%

*

*'

*+

*#

f(.) / - &%$#&*+*'++%'&E-&."+ 0 *'*+*'++%++*E-&. 0 *+$'*,$$R1 / %%%'+##,,

De!it" of Water 

ensit!

Pol!nomial(ensit!)

Average Temp (deg F)

   D  e    !   i   t

  "   (   l   b  m   /   f   t   #   $   )