{"id":287026,"date":"2023-11-07T19:00:15","date_gmt":"2023-11-07T18:00:15","guid":{"rendered":"https:\/\/climatescience.press\/?p=287026"},"modified":"2023-11-07T19:00:19","modified_gmt":"2023-11-07T18:00:19","slug":"study-underground-car-parks-heat-up-groundwater","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=287026","title":{"rendered":"Study: Underground car parks heat up groundwater"},"content":{"rendered":"\n
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These underground car parks are heated by waste heat from car engines and are typically several degrees warmer than the surrounding subsurface, which makes them a\u00a0heat source<\/a>\u00a0for ambient subsurface and groundwater.<\/em><\/strong><\/p>\n\n\n\n

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From Watts Up With That?<\/a><\/p>\n\n\n\n

From the \u201cespecially if the EV\u2019s are on fire\u201d department\u2026<\/em><\/p>\n\n\n\n

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The heat given off by car engines warms up underground car parks in such a way that the heat passes through the ground into the groundwater. In Berlin alone, enough energy is transferred to the groundwater to supply 14,660 households with heat. This finding was made by a team from Martin Luther University Halle-Wittenberg (MLU), the Karlsruhe Institute of Technology, and the University of Basel. According to the researchers, this warming could have long-term effects on groundwater quality. In their study, published in the journal Science of The Total Environment<\/em>, they also propose a solution. Using geothermal energy and heat pumps, the heat could be extracted from the ground and utilized.

The researchers examined temperatures in 31 underground car parks in various cities throughout Germany, Austria and Switzerland. In six of them, they were also able to measure the temperature of the groundwater in the immediate vicinity. This allowed a heat profile to be created for all locations. Their investigations showed that underground car parks heat up the groundwater throughout the year. The volume of traffic in the underground car parks, their proximity to the groundwater and ambient groundwater temperatures were the biggest influencing factors. \u201cPublic underground car parks heat up the groundwater more than private facilities as they are often deeper and the cars park there for shorter periods of time,\u201d explains Maximilian Noethen, a geoscientist from MLU. <\/p>\n\n\n\n

According to the team, geothermal energy and heat pumps could help utilise the excess heat in the ground. \u201cThis would have the advantage of extracting energy from the groundwater and thus cooling it down,\u201d says Noethen. Based on modelling for 5,040 underground car parks in Berlin, the team calculated groundwater warming from the underground car parks for the city. Since many underground car parks in the central districts of the capital are located in or near groundwater, a particularly large amount of heat is transferred to the groundwater there. According to their calculations, around 0.65 petajoules of energy are emitted annually in Berlin. This could theoretically supply around 14,660 households with heat. \u201cOf course, heat from groundwater alone is not enough to cover the heating needs of a city like Berlin or even a country like Germany. Nor are the temperature levels of the groundwater near the surface high enough to provide heat without a heat pump. However, we do know from previous studies that the potential for geothermal energy goes well beyond this and that it could make a significant contribution to supplying sustainable heat,\u201d says Professor Peter Bayer from the Institute of Geosciences and Geography at MLU. <\/p>\n\n\n\n

Groundwater temperatures have been rising for decades as a result of global warming. In cities, this is exacerbated by dense urban development, soil sealing, lack of vegetation and heat radiating directly from tunnels and underground car parks. Since the organisms in the groundwater are adapted to constant temperatures, species composition could also change. \u201cThis could affect the quality of the groundwater from which we draw large parts of our drinking water. This development needs to be controlled through a variety of measures,\u201d concludes Bayer. <\/p>\n\n\n\n

The study was funded by the Deutsche Bundesstiftung Umwelt (DBU) and the Margarete von Wrangell Program of the Ministry of Science, Research and the Arts of the State of Baden-W\u00fcrttemberg.  <\/p>\n\n\n\n

Study<\/strong>: Noethen M. et al. Thermal impact of underground car parks on urban groundwater.\u00a0Science of The Total Environment<\/em>\u00a0(2023). doi:\u00a010.1016\/j.scitotenv.2023.166572<\/a><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

These underground car parks are heated by waste heat from car engines and are typically several degrees warmer than the surrounding subsurface, which makes them a\u00a0heat source\u00a0for ambient subsurface and groundwater. From Watts Up With That? From the \u201cespecially if the EV\u2019s are on fire\u201d department\u2026 The heat given off by car engines warms up […]<\/p>\n","protected":false},"author":121246920,"featured_media":287031,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"These underground car parks are heated by waste heat from car engines and are typically several degrees warmer than the surrounding subsurface, which makes them a\u00a0heat source\u00a0for ambient subsurface and groundwater.","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818051,691818087,691820324,691824387],"class_list":{"0":"post-287026","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-germany","9":"tag-global-warming","10":"tag-groundwater","11":"tag-underground-car-parks","13":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0multi-storey-car-park.jpg?fit=2000%2C1125&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1cFs","jetpack-related-posts":[{"id":316359,"url":"https:\/\/climatescience.press\/?p=316359","url_meta":{"origin":287026,"position":0},"title":"Debunking the Myth CO2 infrared Heats the Ocean!","author":"uwe.roland.gross","date":"04\/04\/2024","format":false,"excerpt":"Absorbed solar heat creates a temperature gradient where conduction moves heat from the diurnal warm layer up towards the cooler skin surface and out to the atmosphere. 98% of the time the ocean heats the atmosphere. 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