[Equest-users] fishpond

[Ery Djunaedy]

Folks,

A side issue on the same topic.

I have gone through some literature on this topic. All the calculation 
methods that I found are actually methods to calculate evaporation rate 
from the pool with the ultimate goal to calculate (a) the heating load 
to maintain the water temperature and (b) the latent load for the air 
above the water. The underlying assumption used in all methods is that 
all the evaporation heat is taken from the water (and nothing from the air).

I investigated this matter because I want to quantify the cooling effect 
of an indoor pool to a naturally ventilated room. If I used the 
calculation methods from the literature that I found (including Shah 
method below) what I end up with is a latent load and a sensible load 
(both positive into the zone) that will be added to the room, simply 
because the method assumes that all the evaporation heat comes from the 
water (and nothing from the air).

I found this very hard to swallow because we all know for a fact that 
people in hot climate use pools to cool down the indoor temperature. I 
am not talking about fountain or sprayer, which has a totally different 
cooling mechanism where all of the evaporation heat comes from the air. 
I am talking about pools, either indoor pool or pools surrounding the 
building.

Is there any literature out there on the cooling effect of pools?

Thanks,

Ery



On 05/03/2012 09:32 AM, Bishop, Bill wrote:
>
> Cristian,
>
> You can model it but you will need to calculate the latent and 
> sensible loads yourself, at least if you are using eQUEST. Without 
> having experience with fishponds, I would approach it like a 
> natatorium (indoor swimming pool) and use the ASHRAE Handbook -- HVAC 
> Applications Chapter 5 for design guidance and loads calculations. 
> Also, see this article: 
> http://hpac.com/humidification-dehumidification/simplified-calculating-evaporation-1011/ 
> for alternate method of calculating evaporation loads. Based on your 
> drawings, I would also research state-of-the-art for aquaculture 
> facilities, as that looks to be what you are designing.
>
> Regards,
>
> Bill
>
> ** <mailto:wbishop at pathfinder-ea.com>
>
> *From:*equest-users-bounces at lists.onebuilding.org 
> [mailto:equest-users-bounces at lists.onebuilding.org] *On Behalf Of 
> *Cristian Salvador Jara Toro
> *Sent:* Thursday, May 03, 2012 11:15 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] fishpond
>
> Sorry, but I meant "design" instead of "model"... because I don´t 
> think to model a room with water in it be possible...
>
> On Thu, May 3, 2012 at 10:53 AM, Cristian Salvador Jara Toro 
> <cristian.jara.toro at gmail.com <mailto:cristian.jara.toro at gmail.com>> 
> wrote:
>
> Greetings!
>
> I have to model a room with a fishpond (more like close to a several 
> fountains where fishes will be inside). WxLxH=9x13x2.5 in meters.
> Has anybody modeled something like that?
>
> So, what I need to know is about ventilation rates for a room like 
> that, wich contains water and fishes swimming in it, but my worry is 
> about condensations, so if anybody has some paper or standard, please 
> let me know.
>
> Thanks in advance...
>
> -- 
> Cristian Jara Toro
> Cel: 6 207 8566
>
>
>
>
> -- 
> Cristian Jara Toro
> Cel: 6 207 8566
>
>
>
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