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	Solar Hot Water Heaters
		In the early twentieth century solar energy was used to power distillation plants in Chile and irrigation pumps in Egypt."[1] By the end of the 1930's, solar technology was used to heat the first building with converted solar water heaters at the Massachusetts Institute of Technology.
		The heated water is collected in a separate pre-heater water tank or a conventional hot water tank (sized for the number of individuals in the household or business).
		Active solar water heaters are forced circulation systems that use a pump to move the heat-transfer fluid, while passive hot water systems rely on gravity and do not utilize a pump for circulating the heat-transfer liquid.
	www.hvacmechanic.com /heating/solar_hot_water_heaters.htm (2764 words)

	Distributed Energy Program: Solar Hot Water
		Solar hot water systems use the sun's energy either to heat water directly or to heat a fluid such as antifreeze that indirectly heats the water through a heat exchanger.
		Solar hot water systems are always mounted on a south-facing roof, a south-facing outside wall, or on the ground facing south, to take greatest advantage of the sun's rays.
		Solar water heaters are fueled by the sun, a renewable energy source that emits none of the greenhouse gases that contribute to global warming.
	www.eere.energy.gov /de/solar_hotwater.html (1013 words)

	Solar Hot Water Primer
		Solar water heaters, sometimes called solar domestic hot water systems, may be a good investment for you and your family.
		Solar water heaters are cost competitive in many applications when you account for the total energy costs over the life of the system.
		The FSEC analysis illustrates that the initial installed cost of the solar water heater ($1,500 to $3,000) is higher than that of a gas water heater ($350 to $450) or an electric water heater ($150 to $350).
	www.montanagreenpower.com /solar/waterheating (3398 words)

	NREL: Learning - Solar Hot Water (Site not responding. Last check: 2007-11-04)
		The shallow water of a lake is usually warmer than the deep water.
		Systems that use fluids other than water usually heat the water by passing it through a coil of tubing in the tank, which is full of hot fluid.
		Solar water heating systems can be either active or passive, but the most common are active systems.
	www.nrel.gov /learning/re_solar_hot_water.html (326 words)

	About Solar - Solar Hot Water / Domestic Hot Water
		Solar hot water systems are most commonly used to heat water for basic household needs such as laundry, bathing, dishwashing and cooking.
		Solar hot water professionals tend to install systems that meet between 60% and 70% of the annual load.
		The same set of solar collectors can be used to provide hot water for both space heating and space heating needs, although space heating will generally require a much greater collector area and storage capacity.
	www.solardepot.com /domestic_hot_water.htm (385 words)

	..:: Thermal Conversion Technology - Solar Hot Water Heating Systems
		When hot water is used, solar pre-heated water is drawn into the conventional water heater, reducing electrical or gas usage for water heating.
		This allows the collector to contain the colder replacement water in the lower tubes where it is heated by the sun as it flows from one tube to the next.
		Each time hot water is used, the innovative design eliminates the cooling down of the remaining heated water that normally occurs in other types of solar hot water heating systems.
	www.tctsolar.com /home_own.htm (461 words)

	Solar Hot Water
		Solar hot water systems: Solar hot water heaters use the warmth of the sun to heat either water or another fluid in collectors.
		When the plumbing from a solar heater connects to a house's existing water heater, the traditionally fueled heater will be inactive as long as the water coming from the solar system is as hot or hotter than the temperature setting on the traditional system.
		The main function of a solar hot water system is to heat or preheat water so that the sun is doing the work that would otherwise be done by fuel oil, electricity or natural gas.
	www.cetonline.org /FarmBusiness/Solar_hot_water.htm (499 words)

	Sourcebook: Solar Hot Water, Heating and Cooling Systems
		The active water systems that can be used to heat domestic hot water are the same as the ones that provide space heat.
		The water that will be used as domestic hot water is circulated directly into the collectors from the storage tank (typically a hot water heater which will back up the solar heating).
		A passive solar water heating system uses natural convection or household water pressure to circulate water through a solar collector to a storage tank or to the point of use.
	www.greenbuilder.com /sourcebook/HeatCool.html (3452 words)

	Solar Energy Technologies Program: Solar Water Heating
		The most common collector used in solar hot water systems is the flat-plate collector.
		Solar water heaters use the sun to heat either water or a heat-transfer fluid in the collector.
		Passive solar water heaters rely on gravity and the tendency for water to naturally circulate as it is heated.
	www1.eere.energy.gov /solar/sh_basics_water.html (690 words)

	Solar hot water
		The amount of solar energy reaching the roof of the average UK house would provide many times our heating and hot water needs, though summer levels are obviously higher than winter, and households' requirements vary.
		Transfer of heat to the domestic hot water system may be via solar fluid flowing through a tube attached to the absorber plate, or heat pipes integral with the solar plates to fluid contained in a manifold at the top of the collector, connected in turn to the storage cylinder by a heat exchanger.
		A 'direct' system, where the water passing through the collectors supplies the hot water system, is not usually appropriate in the UK due to risk of freezing.
	www.ecocentre.org.uk /solar-hot-water.html (782 words)

	Hydronic Heating System
		The heart of this system is a Thermomax solar hot water heating unit (made in Great Britain) which has been installed on the south facing roof section of the greenhouse.
		The manifold connects the hot water pipes in the floor of the straw bale house, the loop up to the Thermomax to bring hot water down from the roof, and the loop to the hot water storage tank and back.
		Conventional solar heating units with water circulating in tubes in an enclosed, fl box don't produce nearly as much hot water when it is cold or windy outside.
	www.solarhaven.org /Hydronic.htm (1488 words)

	Solar Hot Water Questions and Answers
		If you are heating hot water for two or more people and you heat water with electricity or with bottled or natural gas, then you owe it to yourself to look at solar water heating, it could be a great investment for you.
		Hot water is typically 20% to 30% of the annual utility bill.
		Operating one solar water heater instead of an electric water heater saves the equivalent of nine barrels of oil every year and reduces carbon dioxide emissions (a greenhouse gas) by 1600 pounds and sulfur dioxide (contributes to acid rain) emissions by 12 pounds.
	www.ecs-solar.com /solarhotwater_faq.htm (1670 words)

	About Solar - Solar Hot Water
		Solar hot water systems use basic principles and components to capture incoming solar radiation and heat water for domestic and other uses.
		The water is forced through the collectors by a pump and then is drained by gravity to the storage tank and heat exchanger.
		Solar hot water systems are made up of collectors, storage tanks, piping, controls, and in some cases pumps.
	www.solardepot.com /solar_hot_water.htm (627 words)

	VT Solar 2005 · Hot Water
		The hot water system was designed to meet the requirements for hot water while minimizing system cost and complexity and maximizing the benefit from the sunlit surfaces of the house.
		In contrast, a solar thermal system would have to be sized to meet the winter heating need but would not have a use for the excess energy available during the summer months.
		In addition, the hot water system uses thermal energy rejected from the air conditioning system desuperheater to provide âfreeâ heating for the hot water during the air conditioning season.
	vtsolar.arch.vt.edu /event/contests/hot_water (741 words)

	MES - Solar Hot Water
		Domestic hot water is the second-highest energy cost in the typical household.
		Solar water heating can now reduce your domestic water heating costs by as much as 65%.
		The solar collectors are constructed of aluminum, copper, and tempered glass.
	www.mes1.com /hotWater.html (229 words)

	Solar Hot Water
		Our solar powered buildings requires some means of heating water (the second largest energy consumer in the average home).
		The second means of heating is a water coil in the wood stove.
		Preheated water from the wood stove or from the solar panel then flows through our propane instantaneous hot water heater, which may or may not have to turn on depending on whether the water flowing into the heater matches our preset temperature setting.
	www.sagemountain.org /living/hotwater.html (157 words)

	solar hot water
		Solar hot water systems allow you to use the sun's heat to provide your home with hot water - for drinking, for your pool, and even for heating your home.
		Although the initial cost of purchasing a solar hot water heater is higher than conventional hot water heaters, the cost to produce hot water is cheaper.
		Solar hot water heaters take advantage of the sun's energy to heat water, or in colder climates, the heat transfer fluid such as water-glycol mixture.
	rehabadvisor.pathnet.org /sp.asp?id=17845 (855 words)

	Solar Hot Water
		Hot water for domestic and industrial use and swimming pools.
		Solar will offset around $500 to $650 a year for a family of 3-4 (depending on usage patterns).
		This part of the solar hot water system consists of the plumbing parts required to circulate the cooler water from the storage tank to the solar collectors.
	solarcostarica.com /html/solar_hot_water.html (826 words)

	Green Buildings Info - Solar Water Heating
		Solar water heating is one of the most common uses of solar energy.
		In a solar hot water system, collector tubes inside an insulated box absorb the sun's heat and transfer the heat to water or another liquid flowing through the tubes.
		The simplest is called a "batch water heater." The unit is located on the roof or on the ground near the house so that sun striking the collector goes directly into the storage tanks, where it heats the water.
	www.nesea.org /buildings/info/solarwater.html (324 words)

	Solar Hot Water
		From there, the hot water outlet is plumbed to the cold water inlet on your existing water heater.
		Under ideal weather conditions, and no hot water used since morning, the water temperature at 5 pm can exceed 180 degrees F. You may consider installing a tempering valve which allows you to set the temperature for the water before it reaches the faucet.
		After normal water use in the am, the sun heats the water all morning and then that water is used for the laundry (if necessary).
	www.txses.org /epsea/wtr.html (953 words)

	solar hot water heating system information, schematics and theory
		Water to be heated circulates between the storage tank and the solar collectors.
		The output from the solar storage tank becomes the cold water connection to the conventional gas, electric or oil water heater.
		An "Active" solar water heater uses a small pump for solar collector circulation, and does not require a tank on the roof.
	www.solarexpert.com /Heatdhw.html (844 words)

	Solar hot water - Wikipedia, the free encyclopedia
		Solar heating systems are generally composed of solar thermal collectors, a fluid system to move the heat from the collector to its point of usage, and a reservoir to stock the heat for subsequent use.
		The working fluid for the absorber may be the hot water from the tank, but more commonly (at least in pumped systems) is a separate loop of fluid containing anti-freeze and a corrosion inhibitor which delivers heat to the tank through a heat exchanger (a coil of copper tubing within the tank.)
		Installation of solar hot water heating has become the norm in countries such as Israel and Greece, where there is an abundance of solar radiation, and Japan and Austria where there is considerably less.
	en.wikipedia.org /wiki/Solar_hot_water (2127 words)

	Solar Hot Water (Site not responding. Last check: 2007-11-04)
		Laurie D. of Waikouaiti has installed a specially designed solar hot water Thermocell system that is hooked to its prize spa pool; he enjoys plenty of hot spa without much of the burden on his electricity bills.
		During danger periods a controller circulates water to prevent freezing, this process does not affect the useful temperatures in a hot water cylinder.
		solar systems are the best of the line available on the market when it comes to the thermosyphon systems (note that The Warehouse chose to install the Beasley solar hot water systems on all its buildings throughout New Zealand).
	www.pcmsolectric.co.nz /page9.html (602 words)

	Solar Hot Water System - Solar Energy - GEDA
		A Solar Water Heater (SWH) is a device that uses solar energy to heat water.
		Solar Water Heater have several advantages over conventional water heating systems.
		For consumers, they save electrical energy, save interior space (because they are usually located on rooftops,)and eliminate the risk of accidents in bathrooms due to electrical water heating equipment, They require little or no care and attention while providing hot water for about 300 days in a year in most parts of India.
	www.geda.org.in /solar/so_slr_hotwater.htm (129 words)

	Southern California Heliodyne Solar Hot Water Heating System Contractor
		The solar radiation is converted into heat on the inner all-copper absorber.
		The copper tubes attached to the absorber contain a liquid, either water or a water antifreeze mix, which transports the heat to storage, either a solar tank or a water heater.
		When a solar water heater replaces an electric water heater, the energy displaced over 20 years represents more than 50 tons of avoided carbon dioxide emissions alone.
	www.solar-tec.com /SolarHotWater.htm (1363 words)

	Solar hot water - Wikipedia, the free encyclopedia (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-11-04)
		In many northern European countries, combined hot water and space heating systems are used to provide 15 to 25% of home heating energy.
		Polymers being flexible and therefore freeze-tolerant, they are able to use plain water in them instead of antifreeze, so that in some cases they are able to plumb directly into existing water tanks instead of needing the tank to be replaced with one with extra heat exchangers.
		Designs suitable for hot climates can be much simpler and cheaper, and can be considered an appropriate technology; however they will not work very well in temperate climates.
	en.wikipedia.org.cob-web.org:8888 /wiki/Solar_hot_water (2130 words)

	Energy Resources: Solar Hot Water Systems
		Solar Hot Water Systems use the sun's energy rather than electricity or gas to heat water.
		A solar system provider can provide you with information on the different types of solar hot water systems available and the advantages of each.
		After deciding what type of system is right for you, the solar system provider can use your usage data to size a system for you.
	www.sanjoseca.gov /esd/natural-energy-resources/ER-SolarHotWater.htm (316 words)

	Solar Hot Water and Radiant Flooring Systems
		When the fluid is not hot enough to heat your home, your boiler or instant hot water heater provides necessary extra heat.
		No servicing is required except periodically checking the water in the water level inside the tank and to maintain a neutral PH for protectiopn of the copper heat exchangers.
		Conventional water heaters keep a tank of water hot night and day - whether you are using it or not.
	www.acsolar.com /solhtwtr.html (820 words)

	Solar hot water panel - Wikipedia, the free encyclopedia
		A laundromat in California with solar hot water panels on the roof.
		A solar hot water panel is a solar water heater that uses the sun's energy to heat a fluid, which is used to transfer the heat to a heat storage vessel.
		Fluid circulation can be assisted by means of a mechanical pump (which itself could be powered by photovoltaic cell), or in the case of a ground-mounted solar panel, by convection to circulate the fluid to the storage vessel mounted higher in the circuit, also known as a thermosiphon.
	en.wikipedia.org /wiki/Solar_hot_water_panel (245 words)

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