[TRNSYS-users] Calculation energy flux of special construction material

[adnan rasheed]

Hello everyone,

i have a question about calculating heating requirement of a greenhouse
having thermal curtain/Screens (Special material used for reducing heat
loss during night time).  TRNSYS calculate total heating loss (Convective +
Radiation + Conductance). i have this material properties (Transmittance
etc+ convective heat transfer coefficient to calculate Convective +
Radiation ) but for conductance i don't have thermal conductivity of the
material (Properties used in WINDOW software for crating DOE-2 file).

In the literature, some researchers calculate heat loss through these kind
of screens by using Moisture transport + Air permeability + Transmittance
and emissivity (Detail can be seen in the figure attached (Calculation
detail)
[image: Calculation detail.jpg]
). by considering temperature on both side of the material same and have no
or negligible conductance.

My question is that how i can used this method in TRNSYS to calculate
energy flux through these kind of material. is it possible in TRNSYS? by
ignoring thermal conductivity and thickness of the material (Used in DOE-2
file.

Thanks


-- 
Adnan Rasheed
PhD Researcher
Kyungpook National University
Daegu, South Korea.
+82-102762-0105
adnan.upm.spain at gmail.com, adnanrasheed at knu.ac.kr



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11/28/18,
1:28:17 PM
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