Make Up water demand
Make Up water demand
(OP)
Hi to all.
I need some advice on this.
The location is somewhere in middle east and the facilities were already built. Air washers were used to air condition some facilities and total make up water was calculated to be 120m3/day based on peak temperature of 55C.
Note that the location is in the middle of the desert and this will have no permanent water connection, so water is supplied by water tankers daily. But the peak demand will only be for maximum 2 months. There will be cooler seasons throughout the year.
Is it correct to collect the temperatures for each month or week all throughout the year and calculate the demand for make up water per month? In this case the actual demand of water will not be fixed 120m3/day, this will save some money for the client.
Or is there any other better approach on this?
Thanks!
I need some advice on this.
The location is somewhere in middle east and the facilities were already built. Air washers were used to air condition some facilities and total make up water was calculated to be 120m3/day based on peak temperature of 55C.
Note that the location is in the middle of the desert and this will have no permanent water connection, so water is supplied by water tankers daily. But the peak demand will only be for maximum 2 months. There will be cooler seasons throughout the year.
Is it correct to collect the temperatures for each month or week all throughout the year and calculate the demand for make up water per month? In this case the actual demand of water will not be fixed 120m3/day, this will save some money for the client.
Or is there any other better approach on this?
Thanks!





RE: Make Up water demand
RE: Make Up water demand
What sort of delivery schedule are you planning on? The delivery interval should dictate your storage and reserve requirements. It should be up to the site management to keep track of the usage and order replenishments as required.
TTFN
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RE: Make Up water demand
First of all, an air washer is not a swamp cooler.
Swap coolers rely on evaporative cooling and are used in dry arid areas to reduce the supply air temperature. Leaving air temperature will be near saturation.
Air washers deliver chilled water directly to the air washer spray nozzles.
If the entering air dew point temperature is above the leaving air dew point temperature, water will be removed from the air (Dehumidification).
If the air washer is dehumidifying the entering air, then the removed moisture will cause the water basin to overflow.
The only time make-up water will be needed is if the entering air temperature dew point is less than the leaving air dew point temperature.
The make-up water required is based on the saturation efficiency of the spray nozzle section and the entering/leaving and leaving speciic humidity and air flow,
See the air washer sections in the ASHRAE Fundamentals and ASHRAE HVAC System and Equipment Handbooks
RE: Make Up water demand
The entering air dew point is less than leaving air dew point.
@IRstuff
Daily delivery, but I am trying to show the monthly changes, as of now this is just to assess what sort of delivery plans to implement and in future might change.
RE: Make Up water demand
RE: Make Up water demand
TTFN
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RE: Make Up water demand
Coming from Asia, We call it Adiabatic saturator.Obviously its a thermodynamic process.
More power.