Re: [TRNSYS-users] Boundary wall and Qcomo

[David BRADLEY <d.bradley@tess-inc.com>]

Jingyu,
  Setting the back side convection coefficient to a small but non-zero number indicates direct contact with a known (or calculated) temperature. It does not mean that there is no energy transferred through the surface. If you want to create an adiabatic surface within the wall you can set the convective coefficient to zero. QCOMO is the energy transferred through the outside surface of the wall. So long as the wall temperature and the boundary temperature are different, there will still be some energy transferred.
Kind regards,
 David

On 3/22/2013 22:27, 璟瑜 黄 wrote:

Dear user:

I have created a boundary wall whose temperature is provided by myself. And I have set the coefficient of convective heat transfer of back side to 1e-006 and solar absorptance of back side to 0. I suppose the Qcomo will be 0 but it is thousands. Why? Qcomo is consisted by convective and radiation, isn't it?

Jingyu Huang

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