“In the old days it was more like a luxurious project,” says Deo de Klerk, head of the heating and cooling solution team at the Dutch Eneco Energy Firma. Today, his company’s clients are increasingly asking for district cooling as well as district heating systems. Eneco has 33 heating and cooling projects in construction. In Rotterdam in the Netherlands, one of the company’s installations helps to frosty buildings, including apartment blocks, police offices, theater and restaurants using water from the Meuse River.
It is not challenging to understand why cooling technologies are becoming more and more popular. A few years ago Nayral moved out of Paris. He remembers the heat waves. “My routine at the weekend was to go to the parks,” he says. Nayral sat there well for the evening – reading UnhappyNo less – waiting for her apartment to frosty down. Recently, it spends more and more time in shopping centers where air conditioning is plentiful to go through balmy French years. This year, unprecedented heat waves Hit France and other countries in Europe.
The city of Paris is now desperate to assist its residents Find cool shelters during extreme heat spells. The key element of the Parisian climate adaptation plans is the cooling network equipped by the river, whose tubes currently cover a distance of 100 kilometers, although this is to expand to 245 km to 2042, while about 800 buildings are served today by the network, people who are intended to provide 3000 buildings.
Systems such as Paris do not pump the river water around the property. Instead, the pipeline loop introduces river water into objects where it immerses heat from a separate, closed water loop, which connects to buildings. This heat transfer is possible thanks to devices called heat exchangers. After cooling the water in a separate loop, it comes to buildings later, more heat exchangers allow you to frosty liquids in the pipes that supply air conditioning devices in individual rooms. Basically, sultry, say, a packed conference room or art gallery filled with tourists is gradually moved-a river or lake.
The performance of the Paris system differs throughout the year, but even at the top of the summer, when the secin is sultry, the performance factor (COP)-the number of kilowatt hours of cooling energy, which you get for each kilowatt hour of electricity consumed by the system, and do not immerse yourself much below 4. In winter, when offices, museums and hospitals still require a bit of air, as well as much than air-conditioning systems. “This is absolutely wonderful,” he boasts Nayral.
But these summer temperatures are more and more a problem. This summer, the sect briefly exceeded 27 degrees Celsius (81 degrees Fahrenheit), says Nayral. How can this something frosty? The answer is devices with a radiator that assist ensure additional water cooling, which circulates around the buildings. Instead of blowing out balmy air, these devices can expel their heat into the section through the river loop. The possibility of continuing to do this is a narrowing – because Fraîcheur de Paris cannot return the water to the secine at temperatures above 30 degrees Celsius, for environmental reasons. Currently, this means that the river can only accommodate a few additional heat degrees on the hottest days. Future, stronger heat waves can evaporate more costs.