Solar Water Heating Systems

Solar water heating systems are a mature “renewable energy” technology which has become a boom in last few years. Although the initial cost of the solar water heating systems is higher than that of conventional water heaters, they serve as cost effective system for a long run. Because the fuel (solar energy) is absolutely free. One of the main reasons of using solar water heaters is that it serves as a environment friendly system with no lasting effects on the environment.

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These systems use the SUN to heat water or heat-transfer fluid, for instance water-glycol antifreeze mixture, in collectors generally placed on the roof. The heated water is then stored in a tank similar to a conventional tank.

Solar heaters can operate in any climate, but the performance varies depending on the availability of solar energy at the site. The other factor for the efficiency includes the temperature of the water coming into the system. The colder the water, the more efficiently the system operates. The countries like America is doing well for the promotion of solar water heating system. Government is providing many benefits to those who are applying solar hot water systems in their homes. South Carolina Hot water system represents the second largest energy consumer in American households.

One should make sure to place the heating system at a site, which has enough available sunshine to meet the needs efficiently and economically. Sometimes local zoning laws can restrict to place the system at the desired place, so it is better to check with the city and homeowners association to look out for any such restrictions. These days solar simulator software are also available in the market which can analyze the whole solar heating systems.

The type and complexity of a solar water heating system can be determined by the changes–

  • in the temperatures of the day-night cycle.
  • in solar radiation between the seasons( summers, winters)
  • the temperature of water required from the heater.
  • the temperature of water provided to the heater.

Types of solar water heaters–

basically there are two types of solar water heaters..

  • Active heaters.
  • Passive Heaters.

Active Heaters: These are the heaters which uses an electric pump to circulate the heat-transfer fluid between the collector and the storage tank. Because the pump only operates when the fluid in the collector is hotter than the fluid stored in the tank, hence always an operator of the tank is required to turn the pump on and off.

Passive heaters: These are the heaters where the tank acts both as the collector and the storage tank. These heaters are simple, efficient and less costly. There is no mechanical or electrical parts, hence it does not require regular supervision unlike active heaters.

Benefits of the solar water heaters…
There are many benefits of having a solar water heater. Some are–

  • Economic benefits: The initial cost of the systems can be high, but for the long run, these are the best method of heating as the main fuel of these heaters is absolutely free and these systems require less maintenance.
  • Long term Benefits: As these heaters are fuel free, hence we are contributing a bit of ours to prevent fuel shortage and price hikes in the future. According to the National re modelers Association reports, adding a solar water heating system to your house increases the resale value of the house.
  • Environmental Benefits: These heaters do not create any pollution. Hence we can avoid adding our share of carbon-dioxide, nitrogen-dioxide to the environment.

About the Author
The author is an expert in the field design, manufacture , installation and service of Solar Water Heating Systems.

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