A cold-plate liquid cooling distribution unit for supply-liquid temperature and capacity control.<\/p>","protected":false},"menu_order":17,"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":"Liquid Cooling Temperature Control Unit","overview":"The liquid cooling CDU equipment is composed of a plate heat exchanger, secondary solution pump with variable-frequency control, regulating electric valve, expansion tank, frame and pipelines. It provides temperature control, flow control and integrated system control. The system uses a standard cabinet frame with stainless steel pipelines.","working_principle":"","features":["Common secondary solution supply temperature no higher than 40\u00b0C","Single-unit capacity from 120 kW to 300 kW depending on temperature conditions","Customizable 800 \u00d7 1200 \u00d7 2000 mm, 1000 \u00d7 1200 \u00d7 2000 mm and other sizes","Variable-frequency all-stainless secondary circulation pump","Deionized water and glycol aqueous solutions supported","Typical secondary available pressure reserve of 100 kPa"],"applications":[],"notes":["Heat-transfer capacities are approximate source values at stated temperature differences. The 120\u2013300 kW range is not a single unconditional rating.","The stated 2\u00b0C heat-transfer difference is theoretical; the same source gives a common plate-exchanger difference of 5\u20138\u00b0C.","Slide 25 states PUE \u22641.13 for the illustrated ACM system including CDU, MDU and secondary loop network. It is a system claim without a defined climate or load test, not an individual CDU rating."],"source":"Liquid Cooling Manual, pp. 24\u201327","image":{"id":670,"alt":"ACM-CDU"},"diagrams":[],"tables":[{"title":"ACM-CDU heat-transfer duty points","rows":[["Cabinet W \u00d7 D \u00d7 H (mm)","Secondary inlet \/ outlet temperature difference","Primary \/ secondary heat-transfer temperature difference","Approximate heat-transfer capacity"],["600 \u00d7 1200 \u00d7 2000","\u226510\u00b0C","\u22655\u00b0C","300 kW"],["600 \u00d7 1200 \u00d7 2000","8\u201310\u00b0C","\u22655\u00b0C","240 kW"],["600 \u00d7 1200 \u00d7 2000","5\u00b0C","\u22655\u00b0C","150 kW"]]},{"title":"ACM-CDU configuration and engineering guidance","rows":[["Parameter","Source description"],["Components","Plate heat exchanger, variable-frequency secondary solution pump, regulating electric valve, expansion tank, frame and pipelines"],["Functions","Temperature control, flow control and integrated system control"],["Cabinet construction","Standard cabinet frame; stainless-steel pipelines"],["Recommended exchanger \/ pump arrangement","Single plate heat exchanger and single pump"],["Common secondary supply temperature","\u226440\u00b0C"],["Single-unit capacity discussion","120\u2013300 kW, dependent on log mean heat-transfer and supply \/ return temperature differences"],["Custom cabinet dimensions (mm)","800 \u00d7 1200 \u00d7 2000; 1000 \u00d7 1200 \u00d7 2000; other sizes"],["Theoretical primary \/ secondary heat-transfer difference","Within 2\u00b0C"],["Secondary circulation pump","Typically one, all stainless steel, variable frequency"],["Plate heat exchanger","Stainless steel; common heat-transfer difference 5\u20138\u00b0C affects equipment dimensions"],["Secondary fluid","Typically deionized water, ethylene glycol aqueous solution or propylene glycol aqueous solution"],["Common secondary fluid temperature difference","10\u00b0C; permits a smaller pump and lower power consumption"],["Secondary available pressure","Typically 100 kPa reserved; linked to server internal pressure drop"]]}]}},"class_list":["post-640","cxdb_product","type-cxdb_product","status-publish","hentry"],"acf":[],"yoast_head":"\n