[esp-r] Re: Subject: Question about water flowing between two glazing layers.

[chunying li]

I am modelling a layer of water flow between two glass sheets as glazing
attached onto building facade. The water flow can be in single direction
from a supply tank to a receiver tank. How could this simulation exercise be
done with ESP-r?
I cannot find the optical properties like solar absorptance and
transmittance of the water layer between two glass sheets. Is there any
reference available?

Thank you!

Chunying

2009/4/28 Jon Hand <jon at esru.strath.ac.uk>

>
> A recent question about water and glass....
> ________________________________________
> From: esp-r-bounces at lists.strath.ac.uk [esp-r-bounces at lists.strath.ac.uk]
> On Behalf Of chunying li [lichunying83 at gmail.com]
> Sent: 28 April 2009 09:03
> To: esp-r at lists.strath.ac.uk
> Subject: [esp-r]  Question about water flowing between two glazing layers.
>
> Hello, all.
>
> I am doing investigation about water flowing between two layers of glazing.
> Is there any related module in ESP-r?
>
> My problems are:
>
> 1,How to handle the convective heat transfer coefficient between the water
> and ambient glazing when the water is flowing at different speed?
> 2, The solar light will transmit the two layers of glazing and one layer of
> water inside in the daytime, of course. How to ascertain the solar
> absorptance and transmittance of the water layer?
>
> --------------------------------------------------------
>
> Wow, amazing things that people are thinking about.  To discuss, this some
> further
> description would be useful:
>
> a) can you explain the context of this water flowing between glazing (what
> is this
>    representing)?
>
> b) where, specifically, is the water flowing from and to?
>
> c) is it a part of an an environmental control system, or water at a fixed
> inlet temperature?
>
> d) does it always flow in the same direction, at the same rate or every
> stop flowing?
>
> e) how many times would this situation happen in your model - one time or
> 100 times?
>
> f) what thermophysical information about the performance of the water and
> glass is
>   of interest?
>
> We might start from the idea that water flowing between two plates will be
> something
> like a heat exchanger.
>
> -Jon Hand
>
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