Heat pump combinations

High tech solar absorber technology and heat pump combinations

for outdoor pools, indoor pools and hotels

SOLAR

Private solar swimming pool

Combi / range extender heat pumps with solar absorber

Gas engine heat pumps with waste heat and exhaust air heat use

The basis is the Solkav CoEX solar absorber, which, with its 2-layer technology, enables a higher temperature and lower radiation losses.

higher efficiency || + 10% in summer operation || + 20% in the indoor pool area

Solar effect

The Solkav CoEX was developed in a 2-year research project with Aachen University and our EPDM primary material manufacturer. The project was examined by the German Ministry of Research and approved for funding. The developed product of the Solkav CoEX was tested in its solar effect and the thermal conductivity and was released for use in January 2015.

With the Solar CoEX you increase the solar effect by approx. 20% or can reduce the area used accordingly.

Solarspectrum Solkav CoEX

The greatly improved short-wave absorption / UV absorption of the outer layer of the absorber is caused by unique, special pigments. The UV irradiation, which cannot be converted with conventional solar absorbers, can for the first time also be used to gain heat and not only be "fended off"

+ 8% expansion of the achievable solar spectrum and thus the solar energy source.

Thermal conductivity increase Solkav CoEX

Carefully selected additives in a balanced concentration ratio are able to build up a filler network,

· That generates efficient heat transfer

· With improved thermal conductivity, thermal diffusivity well above the values of conventional solar absorber materials

Solar benefits

Together, these two lead to improvements

an enormous increase in the solar effect, especially at low outside temperatures (if it is important!)

both in the outdoor pool: + 10%

as in the indoor pool area: + 20%

With the tangible result of the warmer swimming pool, the effect is most evident at the beginning and end of the season. In relation to the entire summer season, the improvement is an average of 10 to 20%.

Indoor pool use or outdoor pool with temperature guarantee

Range extender concept

Basic solar effect

In the indoor pool area, the use of solar energy is extended by 2 months at the seasonal edges thanks to the greatly improved use of solar energy. This means that indoor swimming pools can be heated to around 48% solar with the solar absorber.

Solar-assisted supply of ambient heat to a heat pump / range extender

SOLKAV uses the disadvantage of the solar absorber (releasing heat to the ambient air) by using it as a huge ambient heat collector (wind) in bad weather or at night, and extracting the energy from the ambient air and bringing it to the useful temperature level (approx. 40 °) via a heat pump. brings. The excellent conductivity of the Solkav CoEX increases the heat absorption even more. The heat capacity of the solar absorber increases to 4.5 times.

The solar absorber replaces you with its dual use as a solar absorber and the great expense for geothermal or water heating. Double use for a single investment.

Compared to air heat pumps, the solar heat pump coupling has the decisive advantage of additional solar input and thus higher base temperatures; thus lower consumption of electrical energy and a much longer running time per year. Since every degree on the evaporator side means approx. 4% less energy consumption, with a temperature increase of 10 ° C this means approx. 35% electricity savings in heat pump operation compared to air heat pumps.

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Photo by: John Doe
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Technical functioning of the heat pump

Range Extender

The heat pump does not produce any heat; it only increases the temperature level of heat; ie it turns 5 ° input temperature into 40 ° heat by using electrical energy (compression and condensation) to convert the absorber energy from 5 ° to 40 ° (with an average power consumption of approx. 20% to 25%).

It does this when the solar heat is insufficient (at night or when it is cool or too cloudy). The system then automatically switches to heat pump operation; and back again when the solar energy is strong enough. All this is controlled and monitored with the central controller and sensors.

In mixed operation with solar energy, which satisfies the heat demand in sunny summer weather without the use of a heat pump, there is a ratio of approx. 1: 5 to 6 (1kWh electrical energy to 5 to 6 kWh of heat), thus an efficiency of more than 500%. If there is not enough space, the system can also be housed in an external container and only the connections to the swimming pool remain in the filter room.

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In outdoor pools, the combination solution ensures 100% of the temperature requirement | in indoor swimming pools approx. 85 to 90%

(Note: if there is snow on the solar absorber or if the temperature is below zero without sunshine, the system will not work).

Solkav has installed around 20 large-scale systems across Europe (7 of them in the baths of the municipality of Vienna) and has many years of experience. We have also built special systems such as gas engine heat pump solutions. These systems have the advantage that the caloric waste heat from the engine can also be used; both the waste heat and the exhaust air heat.

Together with NH³ and the GWP value of zero, a very smart thing!

Naturally complex, but our first system in Hamburg has been running without any complaints for 12 years.

Correctly designed and with many years of experience, manageable and a permanent pleasure in CO² savings.

Solar absorbers and waste heat solutions from AirCondition are also complex

A relevant problem in the south and a great opportunity to save energy. In summer we heat the pools with the waste heat from the air conditioning systems, in "winter" we use solar energy.

Whenever you have a relatively constant and high energy requirement for low-temperature heat, you are right with our solar absorbers and, based on them, with heat pumps or waste heat technology!