Tag: Evaporation

Does the whole pool need to be covered?

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Daisy makes it easier

When there are obstructions or irregular shaped pools, a question we are often asked is: how will we make it work?

For the customer this question can be for a number of reasons, their pool may be:

  • Free form pools that have a very irregular shape
  • Large step areas (or sections) that protrude in an unusual way
  • Step areas (or sections) that are inaccessible
  • Posts or pots obstructing the use of a roller
  • Not enough room for a roller full width.

Daisy CAN help (it’s even easier if you send a photo)! The aim of making a pool cover easier to use is so that the customer will actually use their pool cover.

If the pool cover is too hard to use then they will tend to leave it to one side and not worry about using it.

To make pool covers more user friendly, we may advise not to cover the whole pool area. It is ok to leave some parts uncovered for ease of use.

For some shapes we will advise to leave a section uncovered, the heat loss (lack of insulation) or lack of heating, and even the evaporation is a direct ratio of how much of the pool is covered to how much is uncovered.

The evaporation can only occur on the uncovered section, so if you have 95% of the pool covered they are stopping 95% of the evaporation. The trade-off for the small amount of evaporation far outweighs the customer actually being able to use the pool cover.

Sometimes the shape of the pool will equal the usage and the advice. Send a photo to Daisy for assistance and expert advice if your customer is ok for you to defer the advice to your supplier for special or unusual installations. Email us at [email protected]

 

Are you losing pool water over summer?

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How to test if it’s a leak or evaporation

At this time of year with the heat of summer many pool owners think they have a leak in their pool as they seem to always have a hose hanging in the pool and constantly topping it up.

We’ve seen hoses with white chlorine bleached ends where they have been hanging in the pool. The owners complain that the hose has to stay there as they are tired of pulling it out every second day to top up the water level.

To see if you have a leak or if the water being lost is simply from evaporation; it’s easy!

Put a full bucket of water by your pool and measure the height of the water in your pool (and record it for accuracy). Wait a number of days to a week then measure how far the water level in the pool and the water level in the bucket has dropped. They should both drop the same amount in millimetres as water evaporates at the same rate regardless of surface area (it is only the volume that is different).

To put this into perspective, let’s work out how much water you are putting in your pool:

  1. Most hoses run at about 17 litres per minute. If you have a hose running flat out for 30 minutes you are using just over 500 litres. If you are topping up your pool 2 to 3 times per week then you are using between 1,000 to 1,500 litres per week. Or around 4,000 to 6,500 litres per month… and that is only at 30 minutes, how long do you run your hose for?
  2. If your pool is 9.2m by 4.5m, for every millimetre the water level goes down is 41.4 litres. So topping your pool up from around 1/3rd way up the skimmer box to about ½ way say 25mm means you are adding 1,035 litres of water to your pool.

Evaporation rates are higher over summer

To stop evaporation, cover your pool with a Daisy. This is effectively putting a lid on your pool to stop the water loss, not to mention saving chemicals and helping keep your pool a bit warmer and cleaner.
Daisy pool covers have been independently tested to retain 99.9% of water using the ASTM E96-2005 Water Vapour Transmission test.

For more information including the different types of evaporation for capital cities around Australia and how wind can more than double the daily evaporation rate, read our Evaporation Fact Sheet.

Swim earlier, for longer and more often!

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If you’re a pool owner without a Daisy, why not get yourself one?

A Daisy pool cover will have you swimming earlier by warming and insulating your pool water.

Most Daisy owners find that they can start swimming at least a month earlier than their Daisy-less cousins without a pool cover. And that’s not to mention the extra hours of swimming each day.

Without a pool cover a lot of us can get a bit chilly when the sun goes down and the pool water loses a lot of temperature as well. By having a Daisy on your pool during the day, it warms up the water nicely so that removing it for a late night swim easily becomes a very enjoyable swimming experience.

A pool cover also reduces the water loss due to evaporation. No your pool does not have a hole in it; the sun and especially wind evaporation can tear water out of your pool at an alarming rate without it covered. With a Daisy in place there is next to no evaporation.

If you are still reading this and need another reason to buy a Daisy, then of course there are the chemicals. A Daisy will reduce the chemical loss and even help keep your pool a bit cleaner.

If you haven’t already, go to your local Daisy Expert and demand one of Australia’s favourite pool covers. Find an Expert will help you check out where your nearest Daisy retailer store is.