Re: [EnergyPlus_Support] why blinds not reducing heat gain through window?

["Adil SMH smhadil78@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

Anna

The Blind you have been modelling must be interior blinds. Exterior blinds could show the results that you may like to see. The interior blinds have very little or no impact on internal heat gain. You may ask what is the need of interior blinds then? In a climate setting typical of hot humid types interior blinds are usually used for killing the glare and improving the thermal comfort !!!!! (don't be surprised) this is not by reducing the heat gain (your chillers have to pumps same amount of refrigerant with or without internal blinds) but by limiting the exposure of occupants skin to hot surface of the façade thereby improving the comfort. 

SMH Adil
Simulation Specialist - Built Environment
www.geedindia.org,

Skype Id: smh.adil, New Delhi.

On Tuesday, 7 October 2014 1:23 AM, "annavenediki@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Hello,

I've designed a south facing room with a floor- to-ceiling window and blinds covering the whole surface of the window. I run two simulations, one with no blinds on the window and one with blinds covering the window in order to compare the results. The building's location is in Eastern Europe. The run period is from July to August (sunny and hot period). Both output variables "Zone mean air temperature" and "Surface inside face temperature", have much higher values when the simulation is run with the blinds on the window. How can this be possible? Can it be explained in a way or is there something wrong with the data?

Thanks in advance,

Anna V.

 

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Posted by: Adil SMH <smhadil78@xxxxxxxxx>

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