How To Choose A Solar Hot Water System?

There are many peoples seeking to buy and install a new solar hot water in their house or company, which technology to choose which best suits them can be an overwhelming task.

The many different forms of solar hot water systems now available and their key advantages, installation considerations like roof pitch, shading, and orientation.

Types of Solar Hot Water Systems: 3

Evacuated Tubes 3

Heat Pumps 3

Flat Plates 3

Why Purchase and Install a Solar Hot Water System?

Choosing to install a Solar Hot Water System is among the best financial decisions you can make when it comes to upgrading your house or business, and lowering your energy usage and cost.

The various kinds of solar hot water systems (SHWSs) available, such as flat plates, evacuated tubes, and heat pumps, and the factors you want to take into consideration in determining the best one for you.

If you are interested in buying ‘solar water heater‘(which is also known as ‘เครื่องทำน้ำร้อนพลังงานแสงอาทิตย์‘ in the Thai language) then you can also buy from online websites.

Image result for solar hot water system

The banning of electric storage hot water systems throughout Australia during 2012 has made demanding to understand what systems are available, and which will best suit your home, more important than ever.

Every day your house or company keeps using that old electric storage hot water system, is another day that you don’t gain from the reduced running costs, enhanced property value, and reduced CO2 emissions, provided by a well designed and installed the solar system. Subjects that I’m positive you will agree are getting increasingly more important to us all.

Kinds of Solar Hot Water Systems:

Solar Hot Water Systems come in two major configurations, Close Coupled (tank on the roof) or Split Systems (tank on the floor ).

Close-Coupled Systems

These provide lower running costs (excluding fostering ) as they do not require any power to move the water from the collector to the storage tank, taking advantage of natural”thermosiphoning”. A trade-off is a bulker unit with greater system weight on the roof. By way of instance, a 300L storage tank retains 300kg of water + tank and collector weight.

Split Systems

Split Systems have the collector on the roof and the storage tank located somewhere else- normally on the floor. Split Systems require the use of solar pumps and controls to monitor temperatures and transfer water from the collector(s) into the storage tank. This does involve little amounts of energy being used — normally around 28-60 g per hour for up to 8hours per day.

Flat Plates

The first widely accessible Solar Hot Water Systems in Australia were created in Western Australia way back in 1953 by Solar hart, with their flat plate technologies. This became the standard design for SHWSs for another 40 years. Flat plates use a massive collector surface to pick up the Sun’s warmth with water pipes embedded in the collector to move heat. The collector surface is shielded by a sheet of plastic or glass which generally offers little to no rust.

Evacuated tubes

At the mid-1970s the University of Sydney developed evacuated tube systems but it was to be another 25 years before evacuated tubes became widely available in Australia. This technology provides the maximum performance per sq. m. readily available to the domestic industry.

Evacuated tubes make the most of the natural insulation properties of a vacuum, which allows heat

To enter the glass tube, but doesn’t allow that heat to escape back into the atmosphere.

Using a vacuum also gives evacuated tubes organic frost protection, without the need for antifreeze additives such as glycol that can also reduce performance by around 10%, and create ongoing care requirements.

Since the evacuated tubes are around, passive tracking of the sun across the sky makes it possible for a huge collection surface to be perpendicular to the sun and supply greater performance.

Key Advantages

  • Naturally, frost protected down to -10°C or higher
  • Exotic sunlight tracking for greater performance
  • Low on roof fat
  • Modern stylish design
  • No Glycol (antifreeze) needed

Heat Pumps

While heat pumps don’t use the direct radiant energy from sunlight as both flat plate and evacuated tube systems do they do derive a large proportion of the energy from the heat on the air that’s created by sunlight.

Heat pumps use a compressor to extract heat from the air and transfer heat to a water storage tank. It does this very effectively with a normal system generating approximately 3kw of energy for each 1kw of power used at around 20°C.

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