Rotterdam recycles industrial waste heat
Since 2015 Rotterdam made a sustainable infrastructure that connects the hot effluent to the city heating system. A benefit for hundreds of thousands of houses in Rotterdam.
In future a network of pipes will be connected in the region, where everyone who has waste heat can deliver. And everyone who needs warmth will be supplied. Including greenhouses!
In the Rotterdam region, greenhouses burn together about 28 petajoules (PJ) of natural gas. That’s approximately 885 million cubic feet of natural gas per year.
But by 2018 the greenhouses will receive 7 to 12 PJ (residual) heat from the petro chemical industry.
The greenhouses are also producers of heat. Just like the industry in the Rotterdam Harbor. In summer, they store the extra heat with combined heat and power (CHP). Now the farmers can excess heat by supplying the pipes.
Geothermal and battery
It is logical that greenhouses have to much heath in the summer heat and need a lot of gas in the winter. Therefore, the waste heat will be saved by storing it deep into the ground, using geothermal energy, as a buffer during the winter period. Now there are several renewable energy sources available, the greenhouses can significantly save on the use of fossil fuel.
Fossil fuels are getting scarce. Therefore, it is interesting to make a large-scale heating network. Now mainly as an industrial project. In the future, the network can be expanded with other heat-providers.
Sweden used since the 50s residual heat for district heating. The heat comes from the industry, waste incineration and server stations.
Copenhagen has 100 years, a similar heating network where more than 90% of the population is connected.
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