A very cost-efficient means of producing hot water in domestic or residential settings is through a solar hot water system. Also called as solar-powered domestic heaters, they are an innovative alternative to traditional storage tank heaters. Since a solar hot water system Adelaide utilises the sun as its source of energy, there is no additional running cost in using it.
In most cases, a solar water heater is equipped with a storage tank and solar collector to grab the energy from the sun for conversion. Currently, there are two common types: first is the active variety, which utilises circulating pumps and controls. The second type is called a passive solar water heating system, and it does not use any pump or controls.
As for active solar water heaters, there are also two types, namely the direct circulation system and indirect circulation system.
Direct Circulation – In this system, pumps work by circulating water through collectors and into the house. They are a good option if you live in an area where freezing temperatures are unlikely to occur.
Indirect Circulation – For an indirect circulation system, the pumps will circulate a heat-transfer and non-freezing fluid via the collectors and into a heat exchanger. The water is heated right before distributing it to the home. It is the best option for areas that frequently experience freezing temperatures.
A passive solar water heater, on the other hand, is more affordable than an active version, but you should now that it also is not as efficient. You do get better reliability with it, which means it might even last longer. Passive systems fall into two types: integral collector-storage kind and thermosiphon type.
Integral Collector-Storage Passive – It is best to use this solar water heater variety in areas where temperatures do not usually fall below freezing point. Supposed you live in an area where there is plenty of sunlight, this version is the ideal choice.
Thermosiphon – This system sees water flowing once warm water rises, and the cooler one sinks. The collector needs to be strategically installed below the storage tank so as for warm water to rise into the container quickly. This version is expected to be pricier compared to the first type.
In most instances, solar-powered water heaters need a storage tank equipped with insulation. These tanks provide additional outlet and inlet which connect to the collector. There is also solar water heater with two containers, wherein the system preheats the water before distribution to the traditional water heater. On the other hand, a one-tank version with a backup heater usually integrates with the solar storage in a single tank.
If you think a solar water heater system is ideal for your needs, you must understand that it is crucial to have a backup system because there are days of the year devoid of sunlight.