Napkollektor

Solar collector

Alternative Energy - Resources

Magyar Termék Nagydíj DIN certifikátum
napkollektor, napenergia Magyarul     solar collector in English    
Solarkollektor® - PÉTER IMPEX Ltd.
Hungary 6000 Kecskemét
Alkony str. 29.

SOLARKOLLEKTOR® napkollektor
Péter Impex Ltd
Solar Collector Systems
 
TÜV Rheinland Köln product certification number: 21213361_EN_P

 

The Sun as
resource of energy

Built-up of the solar collector systems

Solar collectors

The operation, and built-up of the solar collectors

The characteristics of the
solar collector, produced
and distributed by
PÉTER IMPEX Ltd.

The solar collector areas of usage, elements of selection

Solar collector systems

Solar collector systems dimansional aspects

Solar collector system diagram sketches

The solar collectors’ areas of usage, elements of selection

In the market the following solar collectors can be found:

         - without a cover, flat collectors without specific coating,

         - flat collector, without specific coating, but with a cover,

         - specifically coated flat collector with a cover (most frequently used ones),

         - specifically coated, vacuum flat collector,

         - vacuum pipe collector.

 

The solar collectors are mostly used for the heating of indoor or outdoor pools, heating water for daily usage, or for supplementary heating of buildings. These usages are meaning different operations, therefore need different requirements.

 


·         Heating outdoor pools

Summertime, the average temperature of the solar collectors used for heating outdoor pools is not more than the temperature of the air. The air temperature is 25-32°C, the pool’s water temperature is 24-28°C, which can be heated with a collector of 35-40°C temperature. The radiated power is ~800 W/m2. In this case the independent variable in the solar collector efficiency formula is X = 0-0,2.

The worst efficiency in this situation, due to the strong reflexion, is in the case of vacuum pipe collectors.

Therefore in the case of outdoor pools simple, cheap collectors without coating can be efficiently used, even these ones are manufactures especially for these purposes.

The high performance of collectors with covers – flat collectors – is recognized in cold weather, therefore during summer, in the case of pool heating one can reach an additional 15% performance.

 

·         Heating water for daily usage all year round

The most frequent usage of solar collectors is heating water for daily usage. In the case of heating water for everyday usage the temperature of the collectors is 30-40°C degrees more than the air temperature, in this case the independent variable of the efficiency is X>0,04. In this operation the efficiency of the flat and vacuum collectors is nearly the same, approximately 60% therefore the cheaper and easily assembled flat collectors are used.

 

·         Indoor pools heating

Heating indoor pools all year round is a much better operation for collectors than heating water for every day usage. The reason fo this is that they have to heat a relatively cold pool all year round. In this operational case a 5% higher performance can be achieved with the vacuum collector than with the flat ones, even though the flat ones are more resistant and are cheaper investments.

 

·         Supplementary heating of buildings

The difference of temperature between the collector and the air in case of heating buildings is 40-60°C, but the value of solar radiation is generally 400-500 W/m2. This way the efficiency parameter is around X = 0,1. In this operational case the best efficiency can be reached with the vacuum pipe and the flat collector, since the good quality heat insulation has got a high advantage.

 

SOLARKOLLEKTOR® napkollektor
Péter Impex Ltd
Solar Collector Systems
 
TÜV Rheinland Köln product certification number: 21213361_EN_P

 

The Sun as
resource of energy

Built-up of the solar collector systems

Solar collectors

The operation, and built-up of the solar collectors

The characteristics of the
solar collector, produced
and distributed by
PÉTER IMPEX Ltd.

The solar collector areas of usage, elements of selection

Solar collector systems

Solar collector systems dimansional aspects

Solar collector system diagram sketches

The solar collectors’ areas of usage, elements of selection

In the market the following solar collectors can be found:

         - without a cover, flat collectors without specific coating,

         - flat collector, without specific coating, but with a cover,

         - specifically coated flat collector with a cover (most frequently used ones),

         - specifically coated, vacuum flat collector,

         - vacuum pipe collector.

 

The solar collectors are mostly used for the heating of indoor or outdoor pools, heating water for daily usage, or for supplementary heating of buildings. These usages are meaning different operations, therefore need different requirements.

 


·         Heating outdoor pools

Summertime, the average temperature of the solar collectors used for heating outdoor pools is not more than the temperature of the air. The air temperature is 25-32°C, the pool’s water temperature is 24-28°C, which can be heated with a collector of 35-40°C temperature. The radiated power is ~800 W/m2. In this case the independent variable in the solar collector efficiency formula is X = 0-0,2.

The worst efficiency in this situation, due to the strong reflexion, is in the case of vacuum pipe collectors.

Therefore in the case of outdoor pools simple, cheap collectors without coating can be efficiently used, even these ones are manufactures especially for these purposes.

The high performance of collectors with covers – flat collectors – is recognized in cold weather, therefore during summer, in the case of pool heating one can reach an additional 15% performance.

 

·         Heating water for daily usage all year round

The most frequent usage of solar collectors is heating water for daily usage. In the case of heating water for everyday usage the temperature of the collectors is 30-40°C degrees more than the air temperature, in this case the independent variable of the efficiency is X>0,04. In this operation the efficiency of the flat and vacuum collectors is nearly the same, approximately 60% therefore the cheaper and easily assembled flat collectors are used.

 

·         Indoor pools heating

Heating indoor pools all year round is a much better operation for collectors than heating water for every day usage. The reason fo this is that they have to heat a relatively cold pool all year round. In this operational case a 5% higher performance can be achieved with the vacuum collector than with the flat ones, even though the flat ones are more resistant and are cheaper investments.

 

·         Supplementary heating of buildings

The difference of temperature between the collector and the air in case of heating buildings is 40-60°C, but the value of solar radiation is generally 400-500 W/m2. This way the efficiency parameter is around X = 0,1. In this operational case the best efficiency can be reached with the vacuum pipe and the flat collector, since the good quality heat insulation has got a high advantage.