Presentation on theme: "The Data Centers, LLC Wolf Technology Center 1 Campus"— Presentation transcript:
1The Data Centers, LLC Wolf Technology Center 1 Campus Dual & Redundant Distributed ControlsCCHP, HPC Data Center & Energy StorageBruce Myatt, PE415–
2QuestionsNow that we’ve discussed the importance of having a control system, what kinds of control systems are available for HPC environments? And are the trade-offs?Let’s discuss HPC Program Modes. What loads can be expected for commissioning, normal operation and even Linpack Benchmarking? What is the impact on controls in moving between these modes?
3Data Center Control Systems Summary Direct Digital Control (DDC)Relatively low level of “critical” reliabilityTypical application in commercial and light industrial HVAC and “comfort” applicationsProsLow costEstablished / FamiliarConsProprietary (protocols, structures are manufacturer-specific), low availabilityProgrammable Logic Controllers (PLC)Higher level of “critical” redundancyTypical application in industrial mfg. applications (Industrial HVAC, Chilled Water Plants, CHP)ProsModerate costEasy configuration, “Open” developmentModular scalability & inter-operability;Tier II, III and IV availabilityConsRequire skilled operations/maintenance staffModerately more expensiveDistributed Control Systems (DCS)Most often used in high availability, high level of “critical” reliabilityTypical applications (Power gen plants, highly analog applications, Oil and Gas, Nuclear, Mission Critical Facilities etc)ProsHighly available (system), reliable and robust – extremely fault tolerant, scalability Tier IV availabilityCons –Require skilled/ knowledgeable maintenance staff, Higher capitalization costsDirect Digital Control (DDC) SolutionsSomewhat low level of “critical” reliabilityTypical application in commercial and light industrial HVAC and “comfort” applicationsPros – low costCons – proprietary (protocols, structures are manufacturer-specific), low availabilityProgrammable Logic Controllers (PLC) solutionsHigher level of “critical” redundancyTypical application in highly discrete industrial manufacturing applications (food production, packaging, etc); highly utilized in continuous process control applications such as utilities and “Balance of Plant” applications.Pros – Moderate capitalization requirements, easy to configure, “open” industry-standard development environments, modular in scalability, inter-operability, scalability; tier II, III and IVCons – Still maturing in high-availability applications, require moderately skilled operations / maintenance staffDistributed Control Systems (DCS) solutionsMost often used in high availability, high level of “critical” reliabilityTypical applications (Power gen plants, highly analog applications, Oil and Gas, Nuclear, Life Safety, ESD, etc)Pros – Highly available (system), reliable, and robust – extremely fault tolerant, scalability; tier IVCons – higher up front costs, require skilled / knowledgeable maintenance staffSC’14 Critical Facilities Solutions, Inc.
4Mechanical Plant Limitations & Performance Open Cell Cooling TowersChillers w/Integral Free Cooling HXsLooped Chilled Water Distribution at Roof LevelCondenser Water PumpsChilled Water Pumps14”16”*Isolation Valves Will be Installed between Main Equipment on Roof to Segregate Loop14”14”Racks with Rear Door HX14”6”6”Cross Tie Branches for Each Row of Racks6”6”3-Way Control Valve at Each Rack to provide Individual Rack Temperature Control14”Isolation Valves between Equipment to Segregate LoopChiller Plant and HVAC ControlsVariable Speed Drive/ Pump and piping sizes4