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District heating networks
Marani company offers Marani units ORCwhich are capable of generating electricity in the power range from 10 kWe to 500 kWe and heat-driven jet cooling systems reaching up to 200 kW of cooling capacity.
Gyms Marani ORC and refrigeration systems can cooperate with district heating networks on the premises of generating facilities such as district heating and combined heat and power plants, industrial plants. Part of the hot water or steam stream feeding the district heating network (municipal or on-site) is the heat energy carrier in this process and can be used as a heat source for ORC plant or refrigeration unit. Depending on the circuit configuration adopted, the water or steam stream from which the heat will be removed in the evaporator ORC facilitiesor cooling system generator is not lost, it is recycled back into the circuit and diverted into the boiler return water stream. This water can also be used as a cooling medium for the condenser and then directed back to the boiler. In this configuration, the unused process water heat remains in the circuit at all times and is not lost to the environment.
Marani offers comprehensive solutions for utilising the heat of the water stream from the district heating network as well as water and process steam using low-temperature or medium-temperature plants operating with an intermediate loop of thermal oil, water or direct evaporation of the working medium.
The heat stream received is converted into electricity, either fed back into the grid or consumed for its own use. or used to generate cooling capacity that can be sold as an additional product.
Application of MARANI ORC technology or MARANI CHILLER in the recovery of heat from water or steam from a district heating system increases the energy efficiency of the system and makes it possible to reap additional profits from electricity production or cooling capacity.
Pros:
- additional electricity production - without burning additional fuel
- additional production of cooling capacity with minimum electricity consumption
- reduction in CO2 emissions
- increasing energy efficiency indicators
- no interference with the technological process
- high electricity generation efficiency of up to 15% for medium temperature installations
- allows additional profits to be generated from the sale of electricity or cooling capacity