.IDEAS.Buildings.Components.BaseClasses.RadiativeHeatTransfer.ZoneLwDistribution

Information

The Mean Radiant Temperature Network (MRTnet) approach from Carroll (1980) is used to compute the radiative heat transfer. This is a computationally efficient approach that does not require exact view factors to be known. Each surface exchanges heat with a fictive radiant surface, leading to a star resistance network.

Parameters

Parameter simVieFac may be set to true to simplify the view factor calculation. This leads to a less accurate computation of view factors, but this approach is more robust. It may be used when the initial equation that computes the view factors does not converge.

References

[Liesen 1997]: R.J. Liesen, and C.O. Pedersen, "An evaluation of inside surface heat balance models for cooling load calculations," ASHRAE Transactions, vol. 103, no. 2, pp. 485-502, 1997.
[Carroll 1980]: Carroll, J.A. 1980. An "MRT method" of computing radiant energy exchange in rooms. Proceedings of the 2nd Systems Simulation and Economics Analysis Conference, January 23-25

Revisions

• April 26, 2024 by Jelger Jansen:
  Improved asserts when view factor computation returns odd results. This is for #1272.
• February 18, 2020 by Filip Jorissen:
  Improved warning when view factor computation returns odd results. See issue #1109.
• February 1, 2017 by Filip Jorissen:
  Added option for disabling new view factor computation. See issue #663.
• January 20, 2017 by Filip Jorissen:
  Changed view factor implementation. See issue #643.
• January 19, 2017 by Filip Jorissen:
  Updated icon for issue #641 .
• January 19, 2017 by Filip Jorissen:
  Propagated parameters for linearisation.
• July 12, 2016 by Filip Jorissen:
  Changed implementation to be more intuitive. Added units to variables.