Parabolic Trough Collectors are concentrating solar radiation to achieve 230° C steam temperature. A heat accumulator is charged and provides the Absorption Chiller with steam 24 hours per day for a continuous air-conditioning.
A solar-assisted air-conditioning system was installed in year 2000 in Dubai and operated
successfully for three years. The solar field is still operating and is providing the hot water for the
Parabolic Trough Collectors are tracking the sun to achieve a highly concentrated solar radiation. The Absorber Tube in the focus converts the radiation into heat.
The Heat Accumulator is a vessel, which is filled with pressurised water at the boiling point. Steam is generated when the system pressure is reduced.
Absorption Chillers convert heat into chilled water, reducing the electricity consumption by 95%. An auxiliary burner backs the Absorption Chiller when solar heat is insufficient, e.g. during cloudy weather or sandstorm.
The system can be installed on the roof in order to provide chilled water to the building and can be combined with compression chillers in case the roof space is insufficient.
The operating and maintenance costs are very low as the sun provides energy free of charge. The system will operate for many years due to the extended life expectancy of the components.
The installation amortises faster in case a steam turbine is installed, which utilises surplus energy during the Winter season.
Ruths storage heat accumulator
Absorption Chiller steam and direct fired
starting from 40 TR
gas or fuel oil
up to 4 tons per
TR and year
A solar share of more than 90% can be achieved in United Arab Emirates.
We are offering accurate planning and simulation of the yearly solar performance to reduce the investment in the solar air-conditioning system and to minimize the required backup.