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What does a cover on a solar water heater do?


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2011-07-23 15:33:18
2011-07-23 15:33:18

If by cover you are referring to a slip-on or wrap around 'blanketing' that surrounds the heater tank, its purpose is simply to reduce the amount of heat energy transferred to the air from the tank, reducing the amount of water that must be circulated through the collectors, and keeping the water hotter longer, for when there is no sunlight to warm it, (although almost all units have electric backups, the purpose of a solar heater is to not use electricity). It's basically just insulation.

If you are talking about a cover for the collectors, it could serve a number of purposes; protection, amplification, insulation, etc. There are some that direct solar light toward the collectors at the most efficient angle regardless of the position of the sun; It just has to be visible.

Solar water heaters do three basic operations before the hot water comes out of your faucet:

1. Energy Collection: Sunlight, short wave energy, is collected and converted to heat which is long wave energy energy.

The solar collector is mounted on or near your home facing south. As the sunlight passes through the collector's plastic or glass "glazing," it strikes a metal or rubber absorbing material. This material converts the sunlight into long wave heat, and the glazing prevents the heat from escaping like a greenhouse. It is like leaving a car parked in the sun with its windows rolled up. The temperature inside a glazed solar collector on your roof can easily reach 300°F when there is no heat transfer fluid flowing through it.

The most common types of solar collectors used in solar water heaters are glazed flat plate collectors. A glazed flat plate collector consists of a shallow rectangular box with a transparent plastic or glass "window" covering a flat black plate or selective "Chrome" coating. The black plate is attached to a series of parallel tubes or one serpentine tube through which water, or other heat transfer fluids pass.

2. Energy Transfer: Circulating fluids like water in an "Open Loop" or Propylene Glycol in a Closed Loop" transferthe collected energy in the form of heat to a storage tank.

Heat energy is transferred from the collector to the water storage tank. In some water heaters, hot fluid is pumped from the collector to the storage tank. The pump is powered by electricity that either comes from an electrical wall outlet or a small photovoltaic module located beside the collector.

3. Energy Storage

Solar-heated water is stored in an insulated tank until you need it. Hot water is drawn off the tank when tap water is used, and cold make-up water enters at the bottom of the tank.

Solar water heaters tend to have a slightly larger hot water storage capacity than conventional water heaters. This is because solar heat is available only during the day and sufficient hot water must be collected to meet evening and morning requirements.


Related Questions

I always left the solar cover on the pool except when I was swimming in it. The solar cover provided enough heat so I did not need to turn on my heater. If the heater pushes the solar cover aside, remove the solar cover from that part of the pool.

form_title= Solar Hot Water Heater form_header= Go green and save green with a solar water heater. What is your budget for a solar water heater? *= _ [50] What is the square footage of your home?*= _ [50] Are you replacing an old water heater?*= () Yes () No

locate pool in sunny area, use a solar water heater, solar pool cover, pool heater or enclosed sun room

a solar heater works by collecting warm sunlight and solar power and stores the water in a tank and heats up the water from there

The installation of a solar water heater will cost between $250-500.

no u cant cause it might break the heater.

Water heater is real danger, also is a waste of energy, solar energy water heater is able to avoid

It is to heat water for some purposes.

Irrelevant, solar power is completely useless

Your pool pump needs to be pushing the water through your solar system

Regular home owners insurance does not cover a water heater. If it leaked and damaged the floor, carpet, walls or furnishings, those would be covered, but not the heater.

Remove the vinyl cover when using a solar blanket to warm the water. If the vinyl cover is used at the same time as the solar blanket, the vinyl cover absorbs most of the heat and then transfers the heat into the air or water between the vinyl cover and the solar blanket. Then the heat transfers to the solar blanket and then, finally, into the water. When this happens, a lot of heat remains in the vinyl cover and air/water between the two covers instead of getting into the water. It is preferable to have the heat absorbed by the solar cover and then transfer directly into the water. Hope this helps... Too much redundancy in pool covers.

They cover just about everything if you have the right policy

With a gas heater or solar or both and/or a solar cover or blanket. But I am assuming that you mean an above ground pool ~ then use the latter (solar blanket) .

Yes, the solar cover should touch the pool water. The cover absorbs the heat from the sun and then transfers that heat to the water. If the cover does not touch the water, most of the heat will end up in the air between the cover and the water rather than going into the water itself. Hope this helps ...

No. Solar water heaters - as hinted by the name - use energy from the sun to heat water. If you want to do electricity, you wan't solar cells, or solar panels.

Electrical water heater is the most effective but the most expensive as well. I suggest you to purchase a solar panel to heat water.

Its function is to heat water for domestic use.

The copper wire used in the solar water heater is wrapped in the shape of the coil to increase its surface area.

Yes, if your solar panel and battery system is able to provide the required power that the water heater needs (voltage, current, etc.). If it cannot do that, the water heater won't work. Whether you will also need an inverter between the solar panel and battery system and the water heater is another issue that can only be determined by checking the specification of the water heater (which will be available from any Gyeser Dealer).Note: the name of this company is Gyeser, not Geyser.

form_title=Solar Water Heater Installation or Replacement form_header=11283 Do you know what the size of the water heater you need is?*= () 30 gallon () 50 gallon () 40 gallon () Want recommendation Will the solar water heater be utilized in heating a spa or pool?*= {Select One,Yes,No,Unsure} Will the intallation location be:*= [] Shaded at any time during the year [] Southern or Western facing What is the location for the water heater?*= () Basement () Garage () Crawl space () Closet () Attic

Use a bubble type solar blanket or cover.

Please go to Water Heater, Solar : ENERGY STAR They seem to have nice selection of the requested merchandise. Also visit the special section for nice discounts. Thank you.

The solar panels absorb energy from then sun, the solar energy is then transformed into heat energy causing the water to heat up.

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