Absorption chillers:
Our absorption chiller serie is operating with heat at very low pressure. The operating liquid is water and a lithium bromide dilution. Water is used as cooling medium and lithium bromide (a stable salt with high chemical affinity to water vapour) as absorption medium.

Requirements for the cooling
All energy from solar system plus the energy for the chiller circuit have to be dissipaded by a cooling tower. The temperature back to the absorbation chiler should not be more thatn 31°C.

Requirements for the solar system:
The minimum temperature to run the absorption chiller is 75°C.  So it's necessary to use collectors with low thermal losses. Further it's an advantage to run the solar circuit by a speed controlled pump.

Requirements for the chiller circuit:
The lowest temperature, that we can generate with our absorption chiller is 7°C. The return line from the chiller circuit should be 12.5°C. For more flexibility we recommend the usage of a chilled water buffer tank.