How much product to protect a 10-gallon solar hot water system down to 30-below? How many months or years can product remain in system without damage?
445900
I am no expert, but I have a BA in chemistry and an MS in an engineering discipline FWIW. Seems by looking up the eutectic that you'd need a 50/50 mix of pure propylene glycol and water, from the Engineering Toolbox (http://www.engineeringtoolbox.com/propylene-glycol-d_363.html). Doubt this stuff will damage your system over time, but I can't say if something odd would happen over years such as bacterial growth etc.
1084040
While there is probably a half-life for the product, if it's properly stored (limited sunlight, tightly sealed, etc), you should get at least 2-3 years of product usage. The oils used need to be protected from too much aeration while in storage.
1430518
Effective shelf life of chlorine dioxide is about 4 years from manufacture date in the liquid form. After mixing the 2 parts and waiting the prescribed 20 minutes, the solution should have a yellowish tint, telling you that the oxygen has been released and ready for mixing with your untreated water. At only $15 to treat 30 gallons of water, it would be cheap insurance to replace it when in doubt of when you bought it.
1081691
We use the cover at night to reduce pool evaporation during the summer and to help the pool retain its heat. The added warmth does encourage more algae, but all we do is increase the chlorine we add to control it. Lots cheaper than running the heater. How much chlorine, and when? We add a gallon or two when the pool begins to loose its sparkle (haven't "tested the chlorine level" in years). Easy peasy. And we get the same amount of debris in the pool, but it's on the cover not in the water. How could it be otherwise?
870219
It all depends on how long you plan to store it,those always looking for max performance redo the heatsink interface every 12 months + or -.Try to store spare paste in a cool place, sealed well away from the elements.
1918295
That depends on the rate of filtered water gallons used and proper use of the filter system. Warm/hot water will ruin the filter if allowed to run through on filtered setting. If one person is using the filter for drinking/cooking purposes at a rate of 1 gallon per day, the 200 gallon filter will last you 200 days. Additionally, if two people are using the filter for drinking/cooking purposes at a rate of 1 gallon each per day, the 200 gallon filter will last 100 days. So, just approximate the number of people using the filter system, multiplied by the amount of filtered water used by each person per day, then divide into 200. That depends on the rate of filtered water gallons used and proper use of the filter system. Warm/hot water will ruin the filter if allowed to run through on filtered setting. If one person is using the filter for drinking/cooking purposes at a rate of 1 gallon per day, the 200 gallon filter will last you 200 days. Additionally, if two people are using the filter for drinking/cooking purposes at a rate of 1 gallon each per day, the 200 gallon filter will last 100 days. So, just approximate the number of people using the filter system, multiplied by the amount of filtered water used by each... » Read More That depends on the rate of filtered water gallons used and proper use of the filter system. Warm/hot water will ruin the filter if allowed to run through on filtered setting. If one person is using the filter for drinking/cooking purposes at a rate of 1 gallon per day, the 200 gallon filter will last you 200 days. Additionally, if two people are using the filter for drinking/cooking purposes at a rate of 1 gallon each per day, the 200 gallon filter will last 100 days. So, just approximate the number of people using the filter system, multiplied by the amount of filtered water used by each person per day, then divide into 200. « Show Less
1560584
Pretty much what everyone else said. I use mine to keep warm water (ie: warm not hot) for drinking. I'd say it loses between 25% - 50% of the heat over a period of 24 hours (depending on how often it's opened and how much is consumed). Still a good product.
1941676
Specs say 20 gallons or less. I would say between 10 and 20. Anything less and the tank gets too warm from the device. Definitely a good product though. I gave the 9 watt one in my 20 gallon and it works great. I used it to clean up an algae bloom but the specs say "Kills algae, pathogens and harmful bacteria" which may be why the tabs recommended them.
2038306
You will need a regulator (like your grill has) , in addition to the tank.We have our heater run off a 500 gallon tank, hard to tell how long a 30 gallon tank would last. I would guess over a month, but just a guess. We love this heater, no regrets.bob
2048353
We also have a 10,000 gallon pool and we use 2. They work well. Raises our temperature about 10 degrees in around 2 to 3 days. It will continue to rise as long as it's sunny.
1624034
Hi Charles,This is what i have inside the box. Hopefully this help.3 yrs on Renology Inverter1 yr on accessories5 years on solar panel material n workmanship25 yrs on power output on the solar panel (90%/10yrs n 80%/25yrs)
1240242
Your system is under designed for the application. How far is the hot water going from the heaters, and being recirculated? My guess is you've exceeded the over length for your setup. Or possibly something's effecting your system. I.E. One units out or you have pipe that not insulated. Your tank heaters is on and heating at full power constantly, that's the only thing that will burn the elements so fast, under normal conditions the elements last 10years. Sometimes water quality can affect the length of time a element will last. But it's really rare to have to replace them that fast. Hard to say what will fix it without details. These little things are designed to go under a sink and heat just enough water to wash your hands etc... Not heat a whole house.
1430519
Effective shelf life of chlorine dioxide is about 4 years from manufacture date in liquid form. After mixing the 2 parts and waiting the prescribed 20 minutes, the solution should have a yellowish tint, telling you that the oxygen has been released and ready for mixing with your untreated water. At only $15 to treat 30 gallons of water, it would be cheap insurance to replace it when in doubt of when you bought it.
196370
There's actually no longer a shelf life listed. It was initially 3 years, then 5 years, and now Vestergaard of Switzerland (the manufacturer) has removed the notice completely. They were designed for use in African countries where the constant hot sun degrades any plastic, and the shelf life notice was created in case some users left them outside for years in the sun. Turns out it wasn't much of an issue to worry about, so the shelf life notice has been lifted. You can use it, store it, and use it again without problem. Just be sure it's totally dry inside before storing - in fact you can store it uncapped to be sure. There's actually no longer a shelf life listed. It was initially 3 years, then 5 years, and now Vestergaard of Switzerland (the manufacturer) has removed the notice completely. They were designed for use in African countries where the constant hot sun degrades any plastic, and the shelf life notice was created in case some users left them outside for years in the sun. Turns out it wasn't much of an issue to worry about, so the shelf life notice has been lifted. You can use it, store it, and use it again without problem. Just be sure it's totally dry inside before storing - in fact you can... » Read More There's actually no longer a shelf life listed. It was initially 3 years, then 5 years, and now Vestergaard of Switzerland (the manufacturer) has removed the notice completely. They were designed for use in African countries where the constant hot sun degrades any plastic, and the shelf life notice was created in case some users left them outside for years in the sun. Turns out it wasn't much of an issue to worry about, so the shelf life notice has been lifted. You can use it, store it, and use it again without problem. Just be sure it's totally dry inside before storing - in fact you can store it uncapped to be sure. « Show Less
1994591
I am not 100% sure, but I think as long as you keep the bottle out of sunlight it may last for a year or 2, possibly longer because it is just distilled water with silver particles.
1127529
I run mine every morning for 3 minutes. Have so for a year. 30 minutes is a long time. I think anything would overheat when subjected to that interval. If whatever you have in there isn't clean in 3 or 4 minutes, it's not going to happen.
1740726
Your pump can last indefinitely with proper care:1. Do not pump too quickly or the heat will damage the seals. Maximum speed should be about 2 seconds per cycle: 1 second up; 1 second down.2. Keep moisture out of the pump and gun. If you live in a humid climate, use a dessicant kit. One is available from the pump manufacturer, Sun Optics (817 783 6001)3. Lubricate the pump with silicone base. Do not use petroleum based lubricants.4. If the pump seals fail, replacements are available from Sun Optics. Sun Optics can also answer technical questions and provide some telephone assistance. Your pump can last indefinitely with proper care:1. Do not pump too quickly or the heat will damage the seals. Maximum speed should be about 2 seconds per cycle: 1 second up; 1 second down.2. Keep moisture out of the pump and gun. If you live in a humid climate, use a dessicant kit. One is available from the pump manufacturer, Sun Optics (817 783 6001)3. Lubricate the pump with silicone base. Do not use petroleum based lubricants.4. If the pump seals fail, replacements are available from Sun Optics. Sun Optics can also answer technical questions and provide some... » Read More Your pump can last indefinitely with proper care:1. Do not pump too quickly or the heat will damage the seals. Maximum speed should be about 2 seconds per cycle: 1 second up; 1 second down.2. Keep moisture out of the pump and gun. If you live in a humid climate, use a dessicant kit. One is available from the pump manufacturer, Sun Optics (817 783 6001)3. Lubricate the pump with silicone base. Do not use petroleum based lubricants.4. If the pump seals fail, replacements are available from Sun Optics. Sun Optics can also answer technical questions and provide some telephone assistance. « Show Less