{"id":31955,"date":"2026-04-23T10:00:00","date_gmt":"2026-04-23T09:00:00","guid":{"rendered":"https:\/\/www.engineernewsnetwork.com\/blog\/?p=31955"},"modified":"2026-04-22T10:19:06","modified_gmt":"2026-04-22T09:19:06","slug":"data-centre-cooling-cut-valve-energy-use-by-up-to-80","status":"publish","type":"post","link":"https:\/\/www.engineernewsnetwork.com\/blog\/data-centre-cooling-cut-valve-energy-use-by-up-to-80\/","title":{"rendered":"Data centre cooling: cut valve energy use by up to 80%"},"content":{"rendered":"\n<p><strong>In data centres, direct-to-chip liquid cooling relies on fast-acting valves to regulate coolant flow and protect servers from overheating. Yet across server racks operating 24\/7, the cumulative energy demand of continuously energised solenoid valves presents cost and sustainability challenges. However, Kick &amp; Drop coil technology offers a solution to this inefficiency by using a high-power \u2018kick\u2019 to actuate the valve, followed by a low-energy \u2018drop\u2019 to hold position. The design can reduce energy consumption by up to 80%. Greg Wainhouse explains<\/strong><\/p>\n\n\n\n<p>In data centre management, cooling technology is essential to prevent servers from overheating, enabling them to optimise performance and maintain uptime. To achieve this, direct-to-chip cooling is the preferred method; heat passes from the server\u2019s microchips into cold plates that sit directly on the surface of each chip. Coolant, typically a water-glycol mixture, flows through each cold plate, removing the heat through forced convection. It then flows via a manifold to a chiller or heat exchanger, and once cooled, it returns to the cold plate.<\/p>\n\n\n\n<p>To prevent overheating, adequate flow of the coolant is essential, and to make this happen, solenoid valves are the typical choice. With the central processing units\u2019 (CPU) load accelerating from idle to high demand in milliseconds, rapid flow reaction is vital to prevent overheating, and the quick response of a solenoid valve is vital to this process. While the electrical control integration of a solenoid valve enables an automatic response to a temperature sensor\u2019s signal, their compact size also enables a close fit within the confines of a cold plate\u2019s manifold.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"597\" height=\"1024\" src=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1-597x1024.jpg\" alt=\"\" class=\"wp-image-31957\" srcset=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1-597x1024.jpg 597w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1-175x300.jpg 175w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1-768x1317.jpg 768w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1-896x1536.jpg 896w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-2-1.jpg 1126w\" sizes=\"auto, (max-width: 597px) 100vw, 597px\" \/><\/a><figcaption class=\"wp-element-caption\">The energy saving technology is used in solenoid valves for a wide range of applications<\/figcaption><\/figure>\n<\/div>\n\n\n<p><strong>Energy demands<\/strong><\/p>\n\n\n\n<p>Within a typical enterprise-level server, there could one or two CPUs per motherboard, plus up to eight graphics processing units (GPU), each requiring individual cooling. More complex servers could include tens of chips, each requiring cooling with their own dedicated cold plate and valves, while entire racks could host hundreds of valve manifolds. Across a large array of valves, energy use becomes a critical factor in cost management and sustainability.<\/p>\n\n\n\n<p>A standard solenoid valve comprises a single coil, producing a continuous magnetic field to move the valve into position and hold it in place. The valve must counteract forces to maintain its position, including the spring that would push the plunger back to its default position, as well as liquid pressure that could do the same. As a result, the valve must be continuously energised, relying on continuous power \u2013 and cost.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"892\" height=\"1024\" src=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3-892x1024.jpg\" alt=\"\" class=\"wp-image-31958\" srcset=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3-892x1024.jpg 892w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3-261x300.jpg 261w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3-768x882.jpg 768w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3-1337x1536.jpg 1337w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-3.jpg 1543w\" sizes=\"auto, (max-width: 892px) 100vw, 892px\" \/><\/a><figcaption class=\"wp-element-caption\">A wide range of Burkert&#8217;s solenoid valves can be specified with Kick &amp; Drop technology<\/figcaption><\/figure>\n<\/div>\n\n\n<p><strong>Kick &amp; Drop<\/strong><\/p>\n\n\n\n<p>However, B\u00fcrkert\u2019s Kick &amp; Drop technology is an alternative that can cut the energy demand per valve by as much as 80%. The design includes two coil windings encapsulated in a single epoxy coil, with both coils powered in series. The device optimises energy efficiency by utilising a high initial voltage to move the valve into position: this is the \u2018kick\u2019. After just 500 milliseconds, a reaction quick enough to respond to the rapidly accelerating temperature load on a server chip, the required valve position is reached.<\/p>\n\n\n\n<p>At this point, the second winding achieves the \u2018drop\u2019, holding the plunger in position. Crucially, it achieves this with a significantly lower voltage. In fact, the overexcited inrush winding generates a very high starting power, creating a strong magnetic field using 85% power to quickly move the plunger, but just 15% to hold it in position. This overexcitation can also achieve higher pressures compared to standard solenoid valve designs, delivering up to 200% more activation power.&nbsp;<\/p>\n\n\n\n<p>Across racks of servers, each in operation 24\/7, the potential for energy savings with Kick &amp; Drop valve technology is significant. An effective way to determine a cost savings figure, as well as the carbon reduction that can be achieved, is via the<strong>\u00a0<a href=\"https:\/\/configurator.burkert.com\/quotation\/startconfigure?action=start&amp;c=74699927-5e4e-4830-8c48-4ea997a57f97&amp;r=%2Fplugin%2Fburkert-all-in-one%2Fcontroller%2FcloseConfigurationEShop%3Fq%3D1811acdf-3030-49ba-934d-c35e4669adbe%26qi%3D1771667729264%26c%3D74699927-5e4e-4830-8c48-4ea997a57f97&amp;a=%2Fplugin%2Fburkert-all-in-one%2Fcontroller%2FcloseConfigurationEShop%3Fq%3D1811acdf-3030-49ba-934d-c35e4669adbe%26qi%3D1771667729264%26c%3D74699927-5e4e-4830-8c48-4ea997a57f97&amp;locale=en\">Kick &amp; Drop Energy and CO2 Calculator<\/a><\/strong><a href=\"https:\/\/configurator.burkert.com\/quotation\/startconfigure?action=start&amp;c=74699927-5e4e-4830-8c48-4ea997a57f97&amp;r=%2Fplugin%2Fburkert-all-in-one%2Fcontroller%2FcloseConfigurationEShop%3Fq%3D1811acdf-3030-49ba-934d-c35e4669adbe%26qi%3D1771667729264%26c%3D74699927-5e4e-4830-8c48-4ea997a57f97&amp;a=%2Fplugin%2Fburkert-all-in-one%2Fcontroller%2FcloseConfigurationEShop%3Fq%3D1811acdf-3030-49ba-934d-c35e4669adbe%26qi%3D1771667729264%26c%3D74699927-5e4e-4830-8c48-4ea997a57f97&amp;locale=en\">.<\/a><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"671\" src=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-1024x671.jpg\" alt=\"\" class=\"wp-image-31959\" srcset=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-1024x671.jpg 1024w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-300x197.jpg 300w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-768x503.jpg 768w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-1536x1007.jpg 1536w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Burkert-Uk-Image-4-2048x1343.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Custom valve manifolds can reduce complexity and enable a more compact design as well as faster integration<\/figcaption><\/figure>\n<\/div>\n\n\n<p><strong>Increased durability<\/strong><\/p>\n\n\n\n<p>Importantly for valves managing server cooling, the Kick &amp; Drop design is also more durable than standard solenoid valves as a result of improved thermal management, with the lower energy demand also meaning reduced heat emissions. With Kick &amp; Drop coils, media heating is reduced with a maximum reachable temperature of 55\u00b0C. This is significant if preventing calcification is important, though purified water typically used in direct-to-chip systems, will prevent this. Crucially, though, this lower operating temperature also results in reduced thermal demand on critical valve components, increasing service lifetime and removing the potential for overheating.<\/p>\n\n\n\n<p>An alternative to a Kick &amp; Drop solenoid valve is proportional control, which is achieved with pulse width modulation (PWM). This system creates rapid on\/off switching of the solenoid valve to control the average current and regulate the force applied to the plunger. While this set-up also reduces energy use compared to a constantly energised solenoid valve, it adds cost in hardware, and it\u2019s more complex to set up. More significantly, the rapid switching can add vibration and audible noise. As well creating a less comfortable working environment for engineers on site, these effects can reduce system smoothness, and vibration is a challenge to long-term durability.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot-1024x683.jpg\" alt=\"\" class=\"wp-image-31960\" srcset=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot-1024x683.jpg 1024w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot-300x200.jpg 300w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot-768x512.jpg 768w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot-1536x1025.jpg 1536w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2026\/04\/Greg-Wainhouse-headshot-2048x1366.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Greg Wainhouse, Regional Business Development Manager \u2013 Industrial Water, North Europe<\/figcaption><\/figure>\n<\/div>\n\n\n<p><strong>Long-term solution<\/strong><\/p>\n\n\n\n<p>To host the valves, manifold integration is also required. B\u00fcrkert\u2019s engineering team can create custom manifolds, including designs that integrate directly with a cold plate and direct-to-chip cooling system. Integrating valves directly into a customised manifold ensures a precise fit for optimised performance, while also enabling a more compact design. Streamlining the development process, manifold and valve integration also achieves a faster time to market rather than managing the coordination of two different partners.<\/p>\n\n\n\n<p>As the global data centre market continues to expand, driven by AI workloads, cloud computing and society\u2019s constant demand for digital connectivity, the need for efficient, direct-to-chip cooling is intensifying. To achieve this, solenoid valve technology will continue to play a critical role, delivering the automated, fast, and reliable flow control required to protect high-value processors operating under rapidly fluctuating loads. Yet with energy efficiency central to cost management and sustainability targets, Kick &amp; Drop technology offers an effective way to reduce energy consumption, while also improving long-term reliability.<\/p>\n\n\n\n<p>Greg Wainhouse is <strong><a href=\"http:\/\/www.burkert.co.uk\" type=\"link\" id=\"http:\/\/www.burkert.co.uk\">B\u00fcrkert<\/a><\/strong>\u2019s Regional Business Development Manager for Industrial Water, North Europe.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In data centres, direct-to-chip liquid cooling relies on fast-acting valves to regulate coolant flow and protect servers from overheating. Yet across server racks operating 24\/7, the cumulative energy demand of continuously energised solenoid valves presents cost and sustainability challenges. However, Kick &amp; Drop coil technology offers a solution to this inefficiency by using a high-power &hellip;<\/p>\n","protected":false},"author":1,"featured_media":31956,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[199,1],"tags":[1699,14761,14763,14762],"class_list":["post-31955","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-news-views-and-opinion","category-process","tag-burkert","tag-data-centre-cooling","tag-kick-drop-coil-technology","tag-valve-energy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Data centre cooling: cut valve energy use by up to 80% - Engineer News Network<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engineernewsnetwork.com\/blog\/data-centre-cooling-cut-valve-energy-use-by-up-to-80\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Data centre cooling: cut valve energy use by up to 80% - Engineer News Network\" \/>\n<meta property=\"og:description\" content=\"In data centres, direct-to-chip liquid cooling relies on fast-acting valves to regulate coolant flow and protect servers from overheating. Yet across server racks operating 24\/7, the cumulative energy demand of continuously energised solenoid valves presents cost and sustainability challenges. 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