Naam Posted May 11, 2017 Share Posted May 11, 2017 15 minutes ago, ChomDo said: You think a pool in the shade can evaporate 0,5cm per day? it can lose much more. you said the water temperature is 32-35ºC. we have presently night low temperatures of 26ºC. this is a delta t of 6-8ºC! then there is usage with moving water and most probably an airblower = another cause for evaporation. and if you are American using the ridiculous "kneewarmer" swimming trunks you are slowly emptying your pool just by going in and out my pool is "shaded" (indoor, no sun) and loses 4-5cm per week with a delta t of only 2ºC. Link to comment Share on other sites More sharing options...
janclaes47 Posted May 11, 2017 Share Posted May 11, 2017 6 minutes ago, Naam said: my pool is "shaded" (indoor, no sun) and loses 4-5cm per week with a delta t of only 2ºC. In that case I would get the bucket out to do the test. Link to comment Share on other sites More sharing options...
grollies Posted May 11, 2017 Share Posted May 11, 2017 12 minutes ago, Naam said: it can lose much more. you said the water temperature is 32-35ºC. we have presently night low temperatures of 26ºC. this is a delta t of 6-8ºC! then there is usage with moving water and most probably an airblower = another cause for evaporation. and if you are American using the ridiculous "kneewarmer" swimming trunks you are slowly emptying your pool just by going in and out my pool is "shaded" (indoor, no sun) and loses 4-5cm per week with a delta t of only 2ºC. Your pool's leaking. Link to comment Share on other sites More sharing options...
ChomDo Posted May 11, 2017 Author Share Posted May 11, 2017 6 minutes ago, Naam said: it can lose much more. you said the water temperature is 32-35ºC. we have presently night low temperatures of 26ºC. this is a delta t of 6-8ºC! then there is usage with moving water and most probably an airblower = another cause for evaporation. and if you are American using the ridiculous "kneewarmer" swimming trunks you are slowly emptying your pool just by going in and out my pool is "shaded" (indoor, no sun) and loses 4-5cm per week with a delta t of only 2ºC. Well the funniest thing is that the pool company who built the pool admitted that even 0,5 cm per day is too much and said it's leaking for sure. So in the end we didn't pay them some 20 % of the total cost because they were incapable of fixing it. There were other reasons of course too for us not having to pay them the full sum. I mean they would be the last people to admit that the pool leaks as it would mean that either they would spend a long time fixing it or leave without the money we owed them. Link to comment Share on other sites More sharing options...
Naam Posted May 11, 2017 Share Posted May 11, 2017 4 hours ago, grollies said: Your pool's leaking. no it's not! the high evaporation is caused by the low humidity of the airconditioned ambiente and the 52ºC hot water during the 2½ hours of daily heating. when we are out of the country (no AC, no heating) we lose around 2cm in 3-4 weeks. i could solve the problem caused by heating but i'm too lazy and busy with other things. water is replaced by our well, i.e. no water cost. Link to comment Share on other sites More sharing options...
grollies Posted May 11, 2017 Share Posted May 11, 2017 20 minutes ago, Naam said: no it's not! the high evaporation is caused by the low humidity of the airconditioned ambiente and the 52ºC hot water during the 2½ hours of daily heating. when we are out of the country (no AC, no heating) we lose around 2cm in 3-4 weeks. i could solve the problem caused by heating but i'm too lazy and busy with other things. water is replaced by our well, i.e. no water cost. My comment was based on your assertion that your pool was loosing 4-5cm per week with a dT of 2degC. See post #31 With that much evaporation it must be raining indoors If my pool was loosing 2" a week, even though outdoors, I'd be seriously worried. Link to comment Share on other sites More sharing options...
Naam Posted May 11, 2017 Share Posted May 11, 2017 1 hour ago, grollies said: My comment was based on your assertion that your pool was loosing 4-5cm per week with a dT of 2degC. delta t is in my case secondary. in context i should have mentioned the main reasons. the pool in our Central Florida home had sometimes an evaporation loss of 3cm per day. we had 96m² of solar panels and tried to keep the pool at 27ºC even when night temperatures were close to freezing point. needless to say that this required sunny days and 7 hours heating time (separate pump for solar bypassing filter). Link to comment Share on other sites More sharing options...
ChomDo Posted May 15, 2017 Author Share Posted May 15, 2017 By the way with all this rain coming down (in Bangkok rains heavy several times a day now) do you cover your outdoor pool or just let it be and add more chlorine and algaecide? Link to comment Share on other sites More sharing options...
grollies Posted May 15, 2017 Share Posted May 15, 2017 1 hour ago, ChomDo said: By the way with all this rain coming down (in Bangkok rains heavy several times a day now) do you cover your outdoor pool or just let it be and add more chlorine and algaecide? Mines about 75% covered from rain (50% depending on the wind direction). I add more sodium chlorite and give the filter an extra backwash if I need to drop the level at all. Rain also lowers the pH. Link to comment Share on other sites More sharing options...
ChomDo Posted May 16, 2017 Author Share Posted May 16, 2017 21 hours ago, grollies said: Mines about 75% covered from rain (50% depending on the wind direction). I add more sodium chlorite and give the filter an extra backwash if I need to drop the level at all. Rain also lowers the pH. 21 hours ago, grollies said: Mines about 75% covered from rain (50% depending on the wind direction). I add more sodium chlorite and give the filter an extra backwash if I need to drop the level at all. Rain also lowers the pH. The weather is really unusual for mid May now. Been raining heavy all night and my pool's water level has gone up 10cm during the night. Well I'll just drain some out and get more chemicals. So far I've only been adding chlorine (about 2 table spoons every 2 days for my 2x3 meter pool). Link to comment Share on other sites More sharing options...
ChomDo Posted May 26, 2017 Author Share Posted May 26, 2017 Hi guys. I'm sure you can help me with this one. Any idea how much electricity consumption goes into a tiny pool that I have (2x3m). The pumps currently run 8 hours a day and jacuzzi maybe 1 hour per day. I would have thought my electricity bill will go up like a few hundred bath per month but it's gone up 2000b per month. This can't be the cost of running a tiny pool right? I just can't recall that I would have used the AC's more or anything so the only thing that I can think of is the pool. Link to comment Share on other sites More sharing options...
Naam Posted May 26, 2017 Share Posted May 26, 2017 3 hours ago, ChomDo said: The pumps currently run 8 hours a day what capacity have these pumps? and why do you run pumpS (plural) for a mini-pool? Link to comment Share on other sites More sharing options...
ChomDo Posted May 26, 2017 Author Share Posted May 26, 2017 29 minutes ago, Naam said: what capacity have these pumps? and why do you run pumpS (plural) for a mini-pool? Actually I just checked that the pump I have is Emaux SS075 (0.75kW) so I guess running it 8 hours means a consumption of 6000 W per day (750wx8hrs) right? That should not affect my electricity bill much. Why do I run pumps? Well I guess for the obvious reason. I want the water to be nice, clean and clear. This is an outdoor pool in direct sunlight and rain. What would the water look like in a few days if I didn't run the pumps at all. The pool company that built the pool set the timers for the pump from 8am to 11am and 4pm to 9pm. Since the pool is so small I think I'll reduce to 4-5 hours per day. Link to comment Share on other sites More sharing options...
janclaes47 Posted May 26, 2017 Share Posted May 26, 2017 16 minutes ago, ChomDo said: Actually I just checked that the pump I have is Emaux SS075 (0.75kW) so I guess running it 8 hours means a consumption of 6000 W per day (750wx8hrs) right? That should not affect my electricity bill much. I thought 180Kw a month would amount to almost 1000 Baht, and that is not including the use of the jacuzzi pump which probably will be more powerful. Ad to that that we are in the hottest part of the year, so your aircon will have to work harder to achieve the same temperature, then the electricity that has been used to build the pool and almost 2000 Baht sounds right to me. Link to comment Share on other sites More sharing options...
Naam Posted May 26, 2017 Share Posted May 26, 2017 27 minutes ago, ChomDo said: Why do I run pumps? Well I guess for the obvious reason. I want the water to be nice, clean and clear. please be a wee bit more precise. you have pumpS = more than one besides the Jacuzzi pump? or one pump which draws 0.75kWh which filters the water? Link to comment Share on other sites More sharing options...
Naam Posted May 26, 2017 Share Posted May 26, 2017 28 minutes ago, ChomDo said: Since the pool is so small I think I'll reduce to 4-5 hours per day. that might work but space pumping time more than twice, i.e. 1hour on / one hour off. Link to comment Share on other sites More sharing options...
ChomDo Posted May 26, 2017 Author Share Posted May 26, 2017 9 minutes ago, Naam said: please be a wee bit more precise. you have pumpS = more than one besides the Jacuzzi pump? or one pump which draws 0.75kWh which filters the water? Oh sorry, I was all the time talking about one pump (which is 0.75kWh). So I have one pump for filtering water. Of course the jacuzzi pump is another thing but I was mainly talking about the main pump now since the jacuzzi is not on that much. Link to comment Share on other sites More sharing options...
ChomDo Posted May 26, 2017 Author Share Posted May 26, 2017 2 minutes ago, ChomDo said: Oh sorry, I was all the time talking about one pump (which is 0.75kWh). So I have one pump for filtering water. Of course the jacuzzi pump is another thing but I was mainly talking about the main pump now since the jacuzzi is not on that much. Yes my mistake I did say pumps in the original question. I get it now . I meant one main pump for filtering. Link to comment Share on other sites More sharing options...
ChomDo Posted May 26, 2017 Author Share Posted May 26, 2017 35 minutes ago, janclaes47 said: I thought 180Kw a month would amount to almost 1000 Baht, and that is not including the use of the jacuzzi pump which probably will be more powerful. Ad to that that we are in the hottest part of the year, so your aircon will have to work harder to achieve the same temperature, then the electricity that has been used to build the pool and almost 2000 Baht sounds right to me. Hmm yes actually that's correct right. If the unit price is around 4.5 then 180x4.5=810b. But isn't it actually complicated to calculate what portion of your electric bill actually goes to the pool. Doesn't the unit price become more expensive the more electricity you consume per month? Of course this doesn't really matter so much now that I know how many kW my pool pump consumes currently per month. Could be somewhere around 1000b with the pump running 8 hours. Link to comment Share on other sites More sharing options...
kannot Posted June 21, 2017 Share Posted June 21, 2017 On 5/11/2017 at 4:54 AM, Naam said: i would like to hear one rational explanation how chunks of whatever matter gets into pipes. This Is Thailand? Im so happy that I learnt quickly that if you want anything done properly in Thailand is to do it yourself, I did all my own plumbing and chose the thicker walled pvc pipe as many Thais here use the 5bar stuff, I used the 13 bar just for durability and strength. Also used the better type of glue not the watery stuff but the stuff you get in tubes, all joints sanded and then wiped clean with thinner (cellulose not turpentine).......as you saw before in my photo......never had a single problem, in fact pvc is the easiest material to work with and always surprises me when they ferrrrrrrrrk it up. You can tell a lot about work quality if the worker is tidy and clean and having spent 30 years with a decorating co. I owned in the UK cleanliness was absolutely paramount for any decent finish Link to comment Share on other sites More sharing options...
carlyai Posted June 21, 2017 Share Posted June 21, 2017 Definitely not a normal Isaan installation. Ahhh, but wait...is that the hint of black tape on the top of that bore/pipe thingy? And wait again, I've notice more black tape. Still tooo near for Thailand, And, And, you've got spacing between the tiles. No earth wire on the metal parts...shame. Nice job . [emoji3]Sent from my SM-J700F using Tapatalk Link to comment Share on other sites More sharing options...
kannot Posted June 21, 2017 Share Posted June 21, 2017 9 hours ago, carlyai said: Definitely not a normal Isaan installation. Ahhh, but wait...is that the hint of black tape on the top of that bore/pipe thingy? And wait again, I've notice more black tape. Still tooo near for Thailand, And, And, you've got spacing between the tiles. No earth wire on the metal parts...shame. Nice job . Sent from my SM-J700F using Tapatalk The black tape covers over the nylon rope holding the well pump up in the bore its serves no electrical purpose, cablings all earthed with 2 metre rod just outside the wall and all with elcb's in the box, the Manifold is stainless from the USA, the non return valve is brass, the tank is Grundfos as is the pressure switch, the twin socket on the wall it all plugs into are 3 pin with switches built in. Theres also a 4 bar pressure relief valve which you cant see in the photo just in case it all goes beserk. Cable down to the well is 4 core inc earth crimped on then heat shrinked to pump with 3 layers then each wrapped in that self amalgamating tape then all four wrapped again which when it arrived with the suppliers cable he had sniped off the earth!! I replaced the lot 55 metres deep The 100 metre cable from the supply is buried underground its 10mm NYY inside 40mm hdpe...............im guessing its "fairly safe".............the staff member died on the job!! It all sits inside this building ( which I had to construct myself) with the cctv camera so no one steals my water, ive got two wells this is the main "best" supply 4-5000 lit hour tested in BKK drinkable but high mineral content have to add water softener ( see other thread) Some construction photos, staff there just to mix concrete, too stupid to do anything else and even then concreting can be challenging for him, either too wet or too dry, a good kid but thick as a plank. Link to comment Share on other sites More sharing options...
carlyai Posted June 21, 2017 Share Posted June 21, 2017 Beautiful job Kannot. [emoji3]Sent from my SM-J700F using Tapatalk Link to comment Share on other sites More sharing options...
Crossy Posted June 21, 2017 Share Posted June 21, 2017 That pump house is better than some many most all of the homes in our village Great job. Link to comment Share on other sites More sharing options...
grollies Posted June 22, 2017 Share Posted June 22, 2017 7 hours ago, kannot said: The black tape covers over the nylon rope holding the well pump up in the bore its serves no electrical purpose, cablings all earthed with 2 metre rod just outside the wall and all with elcb's in the box, the Manifold is stainless from the USA, the non return valve is brass, the tank is Grundfos as is the pressure switch, the twin socket on the wall it all plugs into are 3 pin with switches built in. Theres also a 4 bar pressure relief valve which you cant see in the photo just in case it all goes beserk. Cable down to the well is 4 core inc earth crimped on then heat shrinked to pump with 3 layers then each wrapped in that self amalgamating tape then all four wrapped again which when it arrived with the suppliers cable he had sniped off the earth!! I replaced the lot 55 metres deep The 100 metre cable from the supply is buried underground its 10mm NYY inside 40mm hdpe...............im guessing its "fairly safe".............the staff member died on the job!! It all sits inside this building ( which I had to construct myself) with the cctv camera so no one steals my water, ive got two wells this is the main "best" supply 4-5000 lit hour tested in BKK drinkable but high mineral content have to add water softener ( see other thread) Some construction photos, staff there just to mix concrete, too stupid to do anything else and even then concreting can be challenging for him, either too wet or too dry, a good kid but thick as a plank. Do you have a big problem with water theft where you live? Link to comment Share on other sites More sharing options...
kannot Posted June 22, 2017 Share Posted June 22, 2017 2 hours ago, grollies said: Do you have a big problem with water theft where you live? nah just kidding, ill give em an egg cup full if they want it, the camera is just there so i can see whats going on around the land as its 15 rai and often saves running out to do something as I can check before waddling over there especially when its at the far end of the land, got four in various places all rotatable works thru wifi from main house, cheap quick and pretty reliable, am currently in the Uk but can eaves drop and see if the staff is doing what he is supposed to be or not. Link to comment Share on other sites More sharing options...
ChomDo Posted September 21, 2017 Author Share Posted September 21, 2017 Just to update on my pool leaking problems. We found that there was some leakage trough the pool light cable and had the cables and lights newly installed. The guys (electricians not pool specialists) thought it would be a good idea to also block the air holes in the pool light case with powder lining (tile grout) and around the pool light so that no water can even get to under the light case. I've been wondering why pool lights even have those air holes for water to go in but I guess they are there for some good reason? That's why I'm a bit concerned of having it sealed now. I was trying to find info on this and some website mentioned that water needs to surround the whole light for it to not overheat. But this is a LED light so it doesn't overheat anyway right? Any ideas about this? Should I open the air holes in the light case? Link to comment Share on other sites More sharing options...
Crossy Posted September 21, 2017 Share Posted September 21, 2017 The conduit from the back of the lights should terminate above the pool water level so the water should not escape that way. It's quite normal for the tube to be full of water. These are low voltage lights aren't they? Link to comment Share on other sites More sharing options...
ChomDo Posted September 21, 2017 Author Share Posted September 21, 2017 2 hours ago, Crossy said: The conduit from the back of the lights should terminate above the pool water level so the water should not escape that way. It's quite normal for the tube to be full of water. These are low voltage lights aren't they? Yes the leak from around the lamp area is a bit of a mystery since the cable as you mentioned does exit the pool above water level. Anyway on the outside there was evidence of leaking from the lamp area. We also have a spotlight in the same place on the outside of the pool wall and the guys suspected that the concrete could be too thin at that part and therefore let water out. Anyway the area is well covered now with water plug cement etc so the leak should be fixed in that spot. I will fill in the pool today and will find out soon. Now I'm just concerned about blocking the air holes of the lamp. Anyone know about this that I asked above? Yes my pool light is a 12W if I remember correctly. Anyway does it make any difference if the air holes on the lamp are blocked? Link to comment Share on other sites More sharing options...
mindovermatter Posted October 23, 2017 Share Posted October 23, 2017 Yes, it seems like an evaporation to me too. Link to comment Share on other sites More sharing options...
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