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Solar Thermal Energy How Does It Work

Solar powered air conditioning

Music playing Narrator Over 50 percent of the greenhouse gas emissions you produce in your home are generated by heating, air conditioning and hot water. In other words keeping your home warm in winter, cool in summer with nice hot water on tap is emitting 2.5 to 5 tonnes of greenhouse gas emissions each year. It also contributes a hefty amount to your electricity bill, between 50 to 60 percent. CSIRO has invented a new solar air conditioning system for Australian homes. This technology solution will reduce Australia's emissions, reduce your energy.

Bills and reduce our demand for electricity and gas. If every home in Australia installed our solar cooling technology it would be the equivalent of saving 15 mega tonnes of CO2 or taking 3.5 million cars off the road. CSIRO's solar air conditioning is an innovative three in one technology that provides hot water, cooling and heating. It uses only a fraction of the electricity of current systems and halves greenhouse gas emissions. The process begins with a typical solar hot water system. Water is heated by solar panels and stored in the hot water tank.

This solar hot water can then be used throughout the home, reducing the need for gas or electricity. A portion of the hot water is diverted into CSIRO's new solar air conditioning unit, which is divided into two compartments. The hot water enters a heat exchanger in the first compartment of the unit. Similar to a car radiator the heat exchanger uses the hot water to heat outside air that has been drawn into the first compartment through the vent. At the same time outside air is also being drawn into the second compartment into a desiccant wheel.

The desiccant wheel is the most critical part of the system. It is used to dry out the air before it goes into the house. Slowly turning the desiccant material in the wheel continuously absorbs moisture in the second compartment and then the absorbent material dries out in the first compartment. The desiccant material is dried out using the hot dry air generated by the heat exchanger. This air is then exhausted outside the home. The dry air from the desiccant wheel flows through an indirect evaporative cooler which creates a stream of cool dry air.

Energy 101 Concentrating Solar Power

Bjbj Take the natural heat from the sun, reflect it against a mirror, focus all of that heat on one area, send it through a power system, and you've got a renewable way of making electricity. It's called concentrating solar power, or CSP. Now, there are many types of CSP technologies. Towers, dishes, linear mirrors, and troughs. Have a look at this parabolic trough system. Parabolic troughs are large mirrors shaped like a giant U. These troughs are connected together in long lines and will track the sun throughout the day. When the sun's heat.

Is reflected off the mirror, the curved shape sends most of that reflected heat onto a receiver. The receiver tube is filled a fluid. It could be oil, molten salt something that holds the heat well. Basically, this super hot liquid heats water in this thing called a heat exchanger and the water turns to steam. The steam is sent off to a turbine, and from there, it's business as usual inside a power plant. A steam turbine spins a generator and the generator makes electricity. Once the fluid transfers it heat, it's recycled and used over and over.

And the steam is also cooled, condensed and recycled again and again. One big advantage of these trough systems is that the heated fluid can be stored and used later to keep making electricity when the sun isn't shining. Sunny skies and hot temperatures make the southwest U.S. an ideal place for these kinds of power plants. Many concentrated solar power plants could be built within the next several years. And a single plant can generate 250 megawatts or more, which is enough to power about 90,000 homes. That's a lot of electricity.

What is the difference between Solar Thermal and Solar Photovoltaic Energy Systems

The difference between solar thermal technology and photovoltaic technology, is one converts light into heat and the other converts light into electricity. The energy you use for solar thermal is used for domestic hot water and with the systems we produce we can actually introduce some of that heat into a your heating system and solar photovoltaic technology converts light into electricity which you can use in your home for your electricity consumption and in addition to that for every kilowatt unit the system produces you'll get paid a feed in tariff of what ever the tariff is on the day.

Improving Solar Thermal Technology PARTEQ, Queens University

Solar thermal technology is essentially using the suns radiation to heat water. It's different than photovoltaic technology which uses the sun's radiation and converts it to electricity. Solar thermal, or solar heating, is a much more efficient use of the sun's radiation because we can capture more of it and turn it into heat much easier than the photovoltaic process. Stagnation, or overheating, is a very big problem. Because when systems are functioning normally, when you're using the hot water, then the system works exceptionally well. But when you stop, when for example you go on vacation and your home is not using any.

Hot water, systems can reach temperature of 200 to 220 degrees celcius. Solutions for this are people climbing on their roofs and putting blankets over their solar systems, or over their solar panels, to prevent this from happening. There's definitely been a detriment to the overall commercialization of solar thermal due to overheating and stagnation. The ISC or Integral Stagnation Control technology, is passive, which means it uses no additional power, it does not affect the overall size of the solar thermal collector, and it requires very little maintenance. So what we've done is that we've just added another channel, or gap, behind the absorber,.

Which allows ambient air, or surrounding air, to vent through the solar collector housing itself, and thereby removing the excess heat from the absorber, and rejecting it to the surrounding environment. It uses a passive alloy element, which reacts to temperature. When the interior of the solar collector reaches the control point, it opens the damper assembly, and then that allows air to vent through the collector. A surprisingly simple technology, surprisingly difficult to implement in a reliable, costeffective way. The great thing about this technology is that it will not only save consumers money, but.

Ecotube Solar Thermal Kit

We love to bathe in the sun, now we can bath in it the suns free natural energy can heat your domestic hot water, reduce energy consumption and help the environment solar thermal energy is one of the most cost effective and environmentally friendly ways of reducing your household energy bills designed to work alongside your existing heating system the ecotube solar panel kit from buildbase can provide up to seventy percent of your domestic hot water with average savings of twenty percent of your annual bills so how does it all work.

The sun is the most powerful energy source in our solar system ecotube taps into this free source of energy through a simple yet highly efficient energy transfer system solar evacuated tube panels located on your roof capture the sun's energy each glass tube contains a solution of water and nontoxic antifreeze the mixture absorbs heat and then is pumped into the heat exchanger in the hot water tank the heat then passes into the water and the cool fluid is pumped back into the solar panel the vacuum in the tubes works like.

A thermos flask making it highly efficient even on the coldest day there is no panel more versatile than the ecotube it can be installed on a pitched roof vertically on a wall or on a flat roof. panels need to be broadly south facing avoiding any shade or obstructions or you can install an ecotube eastwest kit panels can also be mounted flat ideal for properties with planning restrictions and when it comes to performance each panel generates seven hundred and twenty seven kilo watt hours per square metre the highest performing panel system.

In the UK not only does it guarantee a source of water heating over a thirty year period it is estimated it will save four point six three two tonnes of CO2 when displacing gas and ten point four five tonnes of CO2 when displacing electricity there are further incentives like the government's renewable heat premium payment scheme providing grants of three hundred pounds towards the installation of your solar panels along with the pending renewable heat incentive scheme they will make payments for the heat you generate designed to your exacting specification each kit can be tailored to meet your daily.

Hot water consumption requirements the kit includes everything you need including a professional installation guide commission checklists user manual and warranty there also optional extras such as high efficiency pumps to reduce electricity consumption and an iPad and iPhone application so you can monitor the system remotely this system is fully MCS accredited and Buildbase also offers you a choice of expert advice from our approved list of installers giving you the peace of mind that the installation from supplier to installer to you the end user is of the highest standards.

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