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District Heating
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Miguel Herrador Moreno . María Jesús Romero Lara .
Cool moves Ruiz de Adana also highlights the importance of the DHC network ’ s two absorption chillers and RACU ; with a total power rating of more than 450 kW , these systems efficiently cool the hot water coming from the district network . “ This means that at any time we can supply buildings with both hot and cold water from renewable energy sources ,” he says . María Jesús Romero , PhD student at the University of Córdoba , was instrumental in developing the RACU prototype , a hybrid renewable air-cooling system that works exclusively with outside air , and controls both air humidity and temperature without using refrigerants . Here , the outside air enters the system and passes through a desiccant wheel to remove excess moisture , controlling the humidity of the supplied air . The air can then pass through a dew-point evaporative cooler , to be cooled ready for supply to the building . And the system also has a ventilation loop to improve indoor air quality . As Romero points out , during a recent heatwave in Córdoba when temperatures reached 43 ° C , the RACU cooled air temperatures to 17 ° C - conventional equipment would struggle to achieve this level of cooling . She also believes the prototype is truly innovative as it offers robust control over air humidity and temperature , as well as ventilation , unlike conventional air-conditioning equipment that typically controls temperature only . “ A main advantage of the system is it uses 100 % outside air compared to conventional systems , that rely on a high percentage of recirculated air ,” she says . “ So with this , we are reducing environmental impact with a highly sustainable technology that maintains indoor air quality and provides thermal comfort inside any building .” All in all , the carbon dioxide emissions associated with cooling from the Córdoba DHC network are expected to be 80 to 95 % lower than those from today ’ s conventional air conditioning systems . “ The biggest challenge we set ourselves when we set out to build this WEDISTRICT pilot plant was the challenge of combining all of its technologies and operating them efficiently ,” says Ruiz de Adana . “[ But we have now been ] obtaining results that can be applied to other neighbourhoods across Spain and the rest of southern Europe .” Ruiz de Adana is also certain that operations at the Córdoba pilot plant can be easily scaled up to serve a greater number of buildings , neighbourhoods and even regions of a city . “ We have this leading facility , which we refer to as a living laboratory ... [ It ] provides a way for us and other organisations and companies to develop the future technological solutions that can provide renewable air conditioning services to buildings ,” he says .
The heat exchanger industry has trusted Webco tubing solutions for more than 50 years . Never content to rest on past success , Webco is committed to innovative , competitive solutions that solve the toughest tubing challenges .
When your tubing matters — Choose Webco .
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26 Heat Exchanger World December 2024 www . heat-exchanger-world . com