Solar-Thermodynamic-System

Thermodynamic Solar System – Tips

If someone told you that a new solar panel by thermodynamic solar system may heat the hot water 24 hours a day, 365 days a year if rain, shine or snow , would you believe it?

Solar Thermodynamic SystemThe Thermodynamic Solar System joins two technologies, the heat pump and the solar thermal collector.
Heat pumps are quite efficient equipment but the heat they produce from their renewable component varies only according to changes in the temperature of the environment. Thermal solar collectors are the best source of heat on hot and sunny days but they are totally inefficient whenever there is no sun.The Thermodynamic Solar System Technology manages to surpass the limitations of both the heat pump and solar collector technologies.
Through the cooling liquid (R134a or R407c) which covers a closed circuit, the liquid goes into the solar panel and suffers the action of sun, rain, wind, environment temperature and other climate factors. During this process the liquid gains heat in a more favourable way than a heat pump. After this stage, the heat is transferred to an exchanger with the help of a small compressor, which heats the water. The liquid cools down and the circuit is repeated.As the fluid has a boiling temperature, the system works even when there is no sun and it even works at night, providing hot water at 55oC, day and night, hail, rain, wind or shine, unlike the traditional solar thermal system.

Thermodynamic solar system advantages

  1. Easy installation, low weight only 6.2 Kg aprox.
  2. Efficiency. Heat pump water heaters get heat energy from ambient air. COP reaches 400%. Running periods can be set by users to control costs.
  3. Wild range applications.
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    Heat pump water heaters are not affected much by rainy days and cloudy days. Can work in -10℃~ 55℃. Heat pump water heaters can be installed at houses, hotels, restaurants, schools, hospitals, dormitories, saunas, etc.

  4. Safe and Eco-friendly. Water and electric are spit entirely in a heat pump water heater. No burning. No gas emission. Not affected by natural disasters.
  5. Anti-freezing. Heat pump water heaters have intelligent defrosting functions to ensure they are capable of working in low ambient air temp.
  6. Convenient installation. Heat pump water heaters can be installed indoors and outdoors. Roofs, grounds, everywhere. Heat pump water heaters also can be remotely controlled.
  7. Long lifespans.

So what are thermodynamic panels?

Despite being panels, they are closer to an air source heat pump than they are to a solar thermal panel. They are basically a freezer in reverse. Refrigerant enters the panel and as it passes through it absorbs heat from the atmosphere and becomes a gas.

The gas then passes through a compressor which increases the temperature and finally through a heat exchange coil inside the hot water cylinder. This heats the water in the cylinder to 55 degrees. It is estimated that about a quarter of the energy absorbed by a panel comes from solar irradiation, the rest from air and rain.
Thermodynamic Solar System

How much hot water do they produce?

They claim to provide 100% of the hot water requirements for domestic and commercial premises, swimming pools, underfloor heating and can make a contribution to traditional central heating.

How do they compare with solar thermal?

Solar thermal panels heat water in the panels, where thermodynamic ones heat a refrigerant. This allows them to harvest heat from the atmosphere, where solar panels depend on heat from the sun. The refrigerant enters the panel at -22 degrees C, so even on cold winter days they can absorb relative warmth from the air.

Solar thermal panels perform best on roofs that face between south east and south west. Thermodynamic panels can be placed on a wall, or on the roof.

Are thermodynamic solar systems more like air source heat pumps?

Air source heat pumps have a fan running continually, which requires more electricity than the compressor in a thermodynamic solar system. As a result the thermodynamic manufacturers claim a much higher coefficient of performance (COP) of 3.5 to 4 – that's three and a half to four units of heat generated for each unit of electricity put into the system.