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1 The Data Centers, LLC Wolf Technology Center 1 Campus Bruce Myatt, PE 415– 748- 0515 Dual & Redundant Distributed Controls.

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Presentation on theme: "1 The Data Centers, LLC Wolf Technology Center 1 Campus Bruce Myatt, PE 415– 748- 0515 Dual & Redundant Distributed Controls."— Presentation transcript:

1 1 The Data Centers, LLC Wolf Technology Center 1 Campus Bruce Myatt, PE 415– Dual & Redundant Distributed Controls CCHP, HPC Data Center & Energy Storage

2 Questions Now 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?

3 Data Center Control Systems Summary Direct Digital Control (DDC) Relatively low level of “critical” reliability Typical application in commercial and light industrial HVAC and “comfort” applications Pros Low cost Established / Familiar Cons Proprietary (protocols, structures are manufacturer-specific), low availability Programmable Logic Controllers (PLC) Higher level of “critical” redundancy Typical application in industrial mfg. applications (Industrial HVAC, Chilled Water Plants, CHP) Pros Moderate cost Easy configuration, “Open” development Modular scalability & inter- operability; Tier II, III and IV availability Cons Require skilled operations/maintenance staff Moderately more expensive Programmable Logic Controllers (PLC) Higher level of “critical” redundancy Typical application in industrial mfg. applications (Industrial HVAC, Chilled Water Plants, CHP) Pros Moderate cost Easy configuration, “Open” development Modular scalability & inter- operability; Tier II, III and IV availability Cons Require skilled operations/maintenance staff Moderately more expensive Distributed Control Systems (DCS) Most often used in high availability, high level of “critical” reliability Typical applications (Power gen plants, highly analog applications, Oil and Gas, Nuclear, Mission Critical Facilities etc) Pros Highly available (system), reliable and robust – extremely fault tolerant, scalability Tier IV availability Cons – Require skilled/ knowledgeable maintenance staff, Higher capitalization costs Distributed Control Systems (DCS) Most often used in high availability, high level of “critical” reliability Typical applications (Power gen plants, highly analog applications, Oil and Gas, Nuclear, Mission Critical Facilities etc) Pros Highly available (system), reliable and robust – extremely fault tolerant, scalability Tier IV availability Cons – Require skilled/ knowledgeable maintenance staff, Higher capitalization costs SC’14 Critical Facilities Solutions, Inc.

4 Open Cell Cooling Towers Chillers w/Integral Free Cooling HXs Condenser Water Pumps Chilled Water Pumps Racks with Rear Door HX Isolation Valves between Equipment to Segregate Loop 3-Way Control Valve at Each Rack to provide Individual Rack Temperature Control Looped Chilled Water Distribution at Roof Level Cross Tie Branches for Each Row of Racks 14” *Isolation Valves Will be Installed between Main Equipment on Roof to Segregate Loop 16” 14” 6” 14” 6” Mechanical Plant Limitations & Performance Chiller Plant and HVAC Controls Variable Speed Drive/ Pump and piping sizes


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