@article{(Open Science Index):https://publications.waset.org/pdf/10000076,
	  title     = {Analysis of Combined Heat Transfer through the Core Materials of VIPs with Various Scattering Properties},
	  author    = {Jaehyug Lee and  Tae-Ho Song},
	  country	= {},
	  institution	= {},
	  abstract     = {Vacuum Insulation Panel (VIP) can achieve very low
thermal conductivity by evacuating its inner space. Heat transfer in the
core materials of highly-evacuated VIP occurs by conduction through
the solid structure and radiation through the pore. The effect of various
scattering modes in combined conduction-radiation in VIP is
investigated through numerical analysis. The discrete ordinates
interpolation method (DOIM) incorporated with the commercial code
FLUENT® is employed. It is found that backward scattering is more
effective in reducing the total heat transfer while isotropic scattering is
almost identical with pure absorbing/emitting case of the same optical
thickness. For a purely scattering medium, the results agrees well with
additive solution with diffusion approximation, while a modified term
is added in the effect of optical thickness to backward scattering is
employed. For other scattering phase functions, it is also confirmed
that backwardly scattering phase function gives a lower effective
thermal conductivity. Thus the materials with backward scattering
properties, with radiation shields are desirable to lower the thermal
conductivity of VIPs.
},
	    journal   = {International Journal of Energy and Power Engineering},
	  volume    = {9},
	  number    = {1},
	  year      = {2015},
	  pages     = {12 - 15},
	  ee        = {https://publications.waset.org/pdf/10000076},
	  url   	= {https://publications.waset.org/vol/97},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 97, 2015},
	}