A large centralized cooling unit installed side-by-side with server cabinets.<\/p>","protected":false},"menu_order":1,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_kadence_starter_templates_imported_post":false,"cxdb_product":{"schema_version":1,"group":"liquid","model":"CDU-300LL3S \u00b7 CDU-600LL3S \u00b7 CDU-300LL3D \u00b7 CDU-600LL3D","overview":"The row-level CDU is a large centralized cooling unit installed side-by-side with server cabinets. It mainly consists of a cabinet, plate heat exchanger, secondary-side circulating water pump, constant-pressure liquid replenishment system, expansion tank, filters, valves, sensors, control system, display screen and power supply module. Through the plate heat exchanger, cooled liquid is sent to the heat source to absorb heat, and the heat-carrying liquid then re-enters the plate heat exchanger for heat exchange treatment, forming a circulating heat exchange process.","working_principle":"","features":["Dual power supply backup","High-efficiency variable-frequency single pump or dual pump optional","Anti-condensation control","Optional 50\u03bcm ultra-fine filtration unit","Automatic liquid replenishment system","Online maintenance","Intelligent group control","Corrosion-resistant stainless steel piping","Intelligent monitoring system","Online water quality monitoring","10%\u2013100% adjustable flow rate","Overpressure protection","Low energy consumption design","Leakage detection function","10-inch color display screen"],"applications":["High-density data centers","Retrofit and new-build data centers","Intelligent computing centers","Large-scale computer rooms","AI training clusters","High-power industrial equipment cooling","Scientific research laboratories"],"notes":["The source states that the above ratings are based on pure water as the working medium. Confirm cooling capacity and fluid requirements with technical personnel; the matrix also lists glycol options.","Storage humidity values are non-condensing. Above 3000 m, the ambient temperature rating decreases by 1.5\u00b0C for each additional 200 m."],"source":"Liquid Cooling Manual, pp. 1\u20132","image":{"id":646,"alt":"Row-level CDU"},"diagrams":[{"image":{"id":654,"alt":"CDU internal equipment arrangement and heat-exchange circuit."},"caption":"CDU internal equipment arrangement and heat-exchange circuit."}],"tables":[{"title":"Row-level CDU model specifications","rows":[["MODEL","CDU-300LL3S","CDU-600LL3S","CDU-300LL3D","CDU-600LL3D"],["Rated heat exchange capacity (kW)","300","600","300","600"],["Unit rated flow rate (L\/min)","470","860","470","860"],["Pump type","Single pump","Single pump","Dual pump","Dual pump"],["Primary supply\/return water temperature (\u00b0C)","35\/45","35\/45","35\/45","35\/45"],["Primary working fluid","Softened water, PG25 aqueous solution, EG25 aqueous solution","Softened water, PG25 aqueous solution, EG25 aqueous solution","Softened water, PG25 aqueous solution, EG25 aqueous solution","Softened water, PG25 aqueous solution, EG25 aqueous solution"],["Secondary supply\/return water temperature (\u00b0C)","40\/50","40\/50","40\/50","40\/50"],["Secondary working fluid","PG25 aqueous solution, EG25 aqueous solution","PG25 aqueous solution, EG25 aqueous solution","PG25 aqueous solution, EG25 aqueous solution","PG25 aqueous solution, EG25 aqueous solution"],["Dimensions W \u00d7 D \u00d7 H (mm)","600*1200*2200","600*1400*2200","600*1200*2200","900*1400*2200"],["Power supply specifications","2-way 3Ph AC380-415V 50Hz","2-way 3Ph AC380-415V 50Hz","2-way 3Ph AC380-415V 50Hz","2-way 3Ph AC380-415V 50Hz"],["Dual power input (optional)","Mains \/ UPS \/ Diesel generator power supply","Mains \/ UPS \/ Diesel generator power supply","Mains \/ UPS \/ Diesel generator power supply","Mains \/ UPS \/ Diesel generator power supply"],["Storage environment temperature and humidity","-45 ~ 85\u2103; long-term 5%~85% non-condensing, short-term 5%~95% non-condensing","-45 ~ 85\u2103; long-term 5%~85% non-condensing, short-term 5%~95% non-condensing","-45 ~ 85\u2103; long-term 5%~85% non-condensing, short-term 5%~95% non-condensing","-45 ~ 85\u2103; long-term 5%~85% non-condensing, short-term 5%~95% non-condensing"],["Altitude","3000m (above 3000m, derated; for every 200m increase in altitude, ambient temperature rating decreases by 1.5\u2103)","3000m (above 3000m, derated; for every 200m increase in altitude, ambient temperature rating decreases by 1.5\u2103)","3000m (above 3000m, derated; for every 200m increase in altitude, ambient temperature rating decreases by 1.5\u2103)","3000m (above 3000m, derated; for every 200m increase in altitude, ambient temperature rating decreases by 1.5\u2103)"]]}]}},"class_list":["post-624","cxdb_product","type-cxdb_product","status-publish","hentry"],"acf":[],"yoast_head":"\n