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The co-generation system consists of a number of stages to harness energy from superheated hot water. A simple overview follows:

1. Four solar thermal concentrator panels (STC) are located on the rooftop, they superheat potable water (the building has both mains water supply and two rainwater tanks).
2. The hot water (~180°C) is first delivered to an ORC (Organic Rankine Cycle) turbine which generates power for the battery storage system.
3. The waste water from the ORC (~120°C) is fed into an absorption chiller (undergoes heat exchange) to augment building air conditioning and supply the air-conditioning laboratories.
4. The waste water from the chiller (~60°C), which is still potable is then dumped into the building hot water systems for general purpose use.

• Solar Thermal Concentrator Brand: PolyTrough 1200B
• ORC Turbine: Eneftech ENEFCOGEN Green 10kWe
• Chiller: Pink Chiller PC19 absorption chiller (custom)

• Thermal Efficiency > 55%
• Nominal Output 15.8kW per module
• Material: Speciality Aluminium with self-supporting sandwich structure of polymer/aluminium.

• Eneftech ENEFCOGEN green 10kWe
• Based on Volumetric Spiral Turbine in a mini ORC system.
• Accepts multiple thermal sources at low temperatures (120 - 200°C)
• Rotational Speed: 1500-6000rpm
• Power output maximum 10kW

• Cooling capacity: 19kW
• Ammonia/water based
• Mass flow rate: 5603 kg/h

• UTS Co-Gen Plant Layout Diagram
• PolyTrough 1200B Technical Specifications
• UTS Pink Chiller PC19 Specifications
• Eneftech ENEFCOGEN Green Booklet
• Polytrough Assembly
• Testimonial Yokagawa
• AIRAH Award