Steam turbine trigeneration plant

In countries where air conditioning is required rather than heating, combined cold and power enables heat generated to be used to produce cold via an adsorption chiller. Superheated steam from the boiler drives a steam turbine connected to a generator that produces electricity. Part of the steam is extracted from the turbine at higher pressure. It drives an adsorption chiller that converts the heat into cold water. A design with full redundancy assures a safe and reliable supply of cold around the clock and throughout the year. The chilled water produced can be fed into an existing district cooling network, with the mass flow rate, temperature and pressure requirements of cooling network operators met dependably at all times. The process can also be used to generate cooling water for the plant’s own purposes, for example to cool the boiler house in hot countries. In principle, trigeneration plants can also switch from generating cold to heat as needed, with the volume of extracted steam required for cooling varied according to demand. It is also possible to boost the maximum efficiency of trigeneration plants to up to 99% by using heat exchange systems in the flue gas treatment unit.