Chilled Water Plant Optimization


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  • Commercial building market: More than 4.7 million commercial buildings in the U.S. Today, commercial buildings account for 18% of total U.S. energy consumption. USGBC estimates that greater building efficiency can meet 85% of future U.S. demand for energy, and a national commitment to green building has the potential to generate 2.5 million American jobs. So why HVAC? Heating, Ventilating and Air Conditioning (HVAC) systems are a major energy consumer in commercial buildings – typically 40% - and 7% of the total U.S. energy consumption. Green building is catching on Benefits include reduced operating costs, enhanced asset value and profits, and optimized life-cycle economic performance. Federal support and state level mandates are encouraging commercial facility owners to find new ways to increase energy efficiency. As our customer, Kevin Kuretich, at the University of Texas at Austin says, “We believed that taking a green approach can be both environmentally right and economically sound, and now, with Optimum Energy, we’ve proven it.”
  • Optimum Energy is the first (and only) company to apply a standard, enterprise applicable software approach to HVAC efficiency. Optimum Energy’s demand-based software solutions – called OptimumHVAC –help commercial and public sector facility operators save money by reducing HVAC energy consumption up to 60%. Depending on the size of the centrifugal chiller plant, that can mean hundreds of thousands of kW/hours – and in many cases, our customers are saving hundreds of thousands of dollars a year.   With savings of 30 to 60 percent across the entire HVAC system regardless of your chiller plant or variable air volume HVAC system configuration, OptimumHVAC delivers a level of energy performance that sets a new standard for the industry. We call this Ultra High Performance HVAC.   We create a baseline of performance starting with our building-specific energy savings analysis that forecasts energy reduction and the ROI, which is typically 12 to 36 months. Then we deliver the projected savings via OptimumHVAC’s persistent optimization software, resulting in increased operating efficiency that lasts the life of the plant.   OptimumHVAC also gives facility managers the ability to measure and validate HVAC performance – anytime, anywhere, via a secure Web site. With OptimumMVM, you can be confident your HVAC is working efficiently – now and into the future.   The energy savings leads to significant reductions in carbon emissions and water use. OptimumHVAC also makes it easy to raise green credibility by earning LEED points or help you become an Energy Star Leader.   To date, Optimum Energy’s solutions have delivered the planned energy savings in more than 60 installations across the U.S. and the globe, including: office towers, airports, medical facilities, shopping centers, university campuses, convention centers, as well as public sector buildings of all types, including administrative buildings, libraries and courthouses.
  • This slide illustrates how we measure energy efficiency. Similar to MPG, we use a kW/ton measurement that calculates the amount of kW/ton of chilled water required to run the entire HVAC system (or C.O.P. for the air side). Another way we measure energy performance is by looking at the kW/ton of an entire chiller plant, or C.O.P for the air side. When we talk about kW/ton, we’re talking about a wire-to-water measurement that includes the entire plant – including centrifugal chillers, pumps, fans, etc. You can think of kW/ton or C.O.P. as the “miles per gallon” measurement of HVAC performance. No matter how far you drive (or how much cooling you need), the miles per gallon (or kW/ton) measure is consistent. Typical chiller plant installations run between 0.9 and 1.2 kW/ton. OptimumHVAC is setting a new standard for the industry with installations running 30% to 60% more efficiently – often less than 0.5 kW/ton for the entire chiller plant, or less than 0.25 kW/ton for the air system. Savings also come in the form of reduced cooling tower water usage and extended equipment life through less wear and tear. And they save money through better predictive maintenance and reduced time spent operating the plant. Discuss how we’re setting a new baseline that is really a paradigm shift in the industry, which until recently has not factored in energy efficiency as it designs HVAC systems.
  • Today’s HVAC systems use efficient equipment, but are controlled to provide a certain level of cooling, rather than being controlled to provide cooling in an energy efficient manner. The traditional method of control is to use PIDs. Under PID control, each system component is operated independently to maintain a setpoint (usually pressure or temperatures) that does not necessarily reflect the current requirements of the system. Controllability and stability are almost always issues with PID control. Energy optimization of any range of conditions almost always adds to these controllability and stability issues. Furthermore, energy optimization is constrained by precision and accuracy of the intermediate temperature and pressure instrumentation. That’s where Optimum Energy comes in. We provide software, which when combined with Variable Frequency Drives (VFDs) can reduce HVAC energy consumption by as much as 60% Even in efficient buildings that are LEED certified – we achieve 30% or more efficiency. Results can be forecasted – a complete ROI analysis provides savings projections that are validated after installation via ongoing measurement and verification of performance/savings.
  • *Animated version* The cornerstone of Optimum Energy’s energy efficiency solution is OptimumHVAC – third-generation software introduced in October 2008. OptimumHVAC ‘s bundled software solution includes OptimumLOOP and/or OptimumTRAV with OptimumMVM. We’ll give a deeper dive on each of these in the following slides, but this is the general overview. Depending on the type of HVAC system in your building, the optimization software you use will be OptimumLOOP or OptimumTRAV, or both. All OptimumHVAC installations (whether OptimumLOOP or OptimumTRAV) also include OptimumMVM. OptimumMVM provides real-time Web-based measurement, verification and management of that enables you to perform automated M&V reports, and view trend data that helps with preventive maintenance. OptimumMVM comes with long-term technical support from Optimum Energy’s technical support team to make sure the plant continues to operate as designed.
  • By comparing how OptimumHVAC plants are operated in comparison to conventional plants, you can see how OptimumMVM changes the way commercial HVAC systems are operated and maintained.
  • Describe the optimization architecture All the components of the HVAC system are controlled by the building automation system (BAS) OptimumHVAC is delivered on an industry standard controller that is able to communicate with any BAS using standard protocols such as BACnet. OptimumHVAC receives information from the BAS every 30 seconds, calculates how to run the HVAC system to optimize energy efficiency, and sends this information back to the BAS. With this delivery system, the BAS is always in control. We’ve decoupled the efficiency algorithms from the BAS. This provides a built-in fail safe: if OptimumHVAC is turned off, control will revert back to the BAS. The OptimumHVAC controller also sends information out to the OptimumMVM, where information is saved for M&V reports and tracking trends. OptimumMVM is the secure, Web-based measurement, verification and management service by which building operators and Optimum Energy engineers can view plant performance from anywhere they have access to the Internet.
  • The OptimumHVAC solution is a three part solution Without all three of these components, you are not competitive with OptimumHVAC. Efficiency contractors can offer engineering, and control engineers can provide some level of custom-programmed control sequences. Neither offers OptimumMVM.
  • Recap slide: briefly review key points. Quantitative economic results are key: ultimately it’s the ROI that sells our product.
  • Chilled Water Plant Optimization

    1. 1. <ul><li>Chilled Water Plant </li></ul><ul><li>(Typical) </li></ul><ul><li>Any Plant, USA </li></ul><ul><li>August 2010 </li></ul><ul><li>Joe Pessa, Account Executive </li></ul><ul><li>Optimum Energy, LLC </li></ul>
    2. 2. Agenda <ul><li>Tell Us About Your Building’s Energy Usage </li></ul><ul><li>Optimum Energy’s Solutions & Services </li></ul><ul><ul><li>OptimumHVAC </li></ul></ul><ul><ul><ul><li>OptimumLOOP </li></ul></ul></ul><ul><ul><ul><li>OptimumTRAV </li></ul></ul></ul><ul><ul><ul><li>OptimumMVM </li></ul></ul></ul><ul><li>Real-world Energy Saving Examples </li></ul><ul><li>Next Steps </li></ul>
    3. 3. Commercial Building Energy Usage * Source: U.S. Energy Information Administration’s 2003 Commercial Buildings Energy Consumption Survey (CBECS) HVAC 50%
    4. 4. Setting a New HVAC Standard Proven technology: 60+ commercial/government projects Ultra High Performance HVAC 12-36 month payback 30-60% wire-to-water energy & operating cost reductions Web-based measurement & verification Patented, proprietary solution Demand-based software approach LEED points, Energy Star rating Reduce carbon emissions, save water Persistent optimization
    5. 5. Measuring Energy Efficiency in HVAC Average annual chiller plant efficiency in kW/ton. Input includes: chillers, tower fans, condenser and chilled water pumping. Chiller Plant Efficiency Scale
    6. 6. Optimum Energy + VFDs
    7. 7. Optimum HVAC Products & Services <ul><li>Optimum TRAV </li></ul><ul><ul><li>Software that controls the air side for more efficient delivery of heating and cooling </li></ul></ul><ul><li>Optimum LOOP </li></ul><ul><ul><li>Software that maximizes the energy performance of chilled water plants </li></ul></ul><ul><li>Optimum MVM </li></ul><ul><ul><li>Web-based m easurement, v erification and m anagement service that guarantees persistent energy efficiency </li></ul></ul>
    8. 8. New Method for HVAC Management <ul><ul><li>OptimumHVAC Plants with OptimumMVM </li></ul></ul><ul><ul><li>As a networked solution, it’s possible to view real-time performance anytime via a secure, online service. </li></ul></ul><ul><ul><li>Summary views (DashBoard, Plant OverView) allow for quick detection of efficiency performance degradation. </li></ul></ul><ul><ul><li>Trend data can be analyzed, point by point (Trends/Charts) to quickly diagnose problems. </li></ul></ul><ul><ul><li>Data is easily shared with contractors for fast problem resolution. </li></ul></ul><ul><ul><li>Conventionally Operated Plants </li></ul></ul><ul><ul><li>Plant energy performance is unknown. </li></ul></ul><ul><ul><li>Plant performance problems only detected if occupants complain, or if routine maintenance or a commissioning process uncovers hidden problems. </li></ul></ul><ul><ul><li>Mechanical and controls contractors physically observe plant operation to detect faults. </li></ul></ul><ul><ul><li>Contractors must work together to resolve issues (inefficient process). </li></ul></ul>
    9. 9. Optimum HVAC Optimization Architecture
    10. 10. Optimum HVAC Value Proposition <ul><li>Efficiency Engineering </li></ul><ul><li>Preliminary energy analysis </li></ul><ul><ul><li>Start with Building Assessment Form </li></ul></ul><ul><ul><li>Calculate potential energy savings </li></ul></ul><ul><li>Optimum Energy efficiency engineers conduct onsite site assessment </li></ul><ul><ul><li>Determine plant readiness </li></ul></ul><ul><ul><li>Recommend design changes </li></ul></ul><ul><li>Calculate detailed return on investment (ROI) analysis </li></ul><ul><ul><li>Full project scope of work </li></ul></ul><ul><ul><li>OptimumHVAC integration plan </li></ul></ul><ul><li>Optimization Software </li></ul><ul><li>Patented software solution reduces HVAC energy consumption 30-60% </li></ul><ul><ul><li>Automatically calculates most efficient sequencing of HVAC system equipment based on real-time building loads </li></ul></ul><ul><li>OptimumLOOP for chilled water </li></ul><ul><li>OptimumTRAV for air delivery </li></ul><ul><li>Delivered on OptimumHVAC controller </li></ul><ul><ul><li>Open protocol makes it compatible with all BAS </li></ul></ul><ul><li>M&V and Management </li></ul><ul><li>OptimumMVM’s continuous M easurement, V erification and M anagement service guarantees persistent energy reduction and cost savings in plants optimized with OptimumHVAC </li></ul><ul><ul><li>Data available 24/7 with secure online portal </li></ul></ul><ul><ul><li>Detailed real-time and historical performance data for fast detection, diagnosis and resolution of system faults </li></ul></ul><ul><ul><li>Prevent performance degradation </li></ul></ul><ul><ul><li>Savings last year after year </li></ul></ul>
    11. 11. University of Texas at Austin <ul><li>District Cooling system serving 200 campus buildings </li></ul><ul><li>All-variable speed Chiller Station 6 HVAC system includes: </li></ul><ul><ul><li>3 – 5,000 ton chillers </li></ul></ul><ul><ul><li>3 condenser water pumps </li></ul></ul><ul><ul><li>3 chilled water pumps </li></ul></ul><ul><ul><li>3 cooling tower cells </li></ul></ul><ul><li>Estimated first year savings with OptimumHVAC: </li></ul><ul><ul><li>Reduce energy consumption by 6,000,000 kWh </li></ul></ul><ul><ul><li>Lower operating expenses by $500,000 </li></ul></ul><ul><ul><li>Produce 87,000,000 ton-hrs per year </li></ul></ul><ul><ul><li>Achieve annual performance range of 0.33 to 0.78 kW/ton </li></ul></ul><ul><ul><li>Realize a simple payback in 12 months </li></ul></ul>
    12. 12. Mineta San Jose International Airport <ul><li>International airport in San Jose, CA </li></ul><ul><li>HVAC system includes: </li></ul><ul><ul><li>1 – 1,100 ton Carrier chiller </li></ul></ul><ul><ul><li>2 – 650 ton York chillers </li></ul></ul><ul><li>First year savings with OptimumHVAC: </li></ul><ul><ul><li>Reduced energy consumption by 1,256,000 kWh </li></ul></ul><ul><ul><li>Lowered operating expenses by $188,000 </li></ul></ul><ul><ul><li>Decreased carbon emissions by 600,000 lbs </li></ul></ul><ul><ul><li>Improved wire to water kW/ton 51%; down from 1.25 kW/ton to 0.61 kW/ton </li></ul></ul><ul><ul><li>Simple payback of 14 months </li></ul></ul><ul><li>Currently installing OptimumHVAC in its brand new Terminal B and North Concourse </li></ul>
    13. 13. Aventine Complex <ul><li>Commercial, multi-use, 250,000 sq. ft. building in La Jolla, CA </li></ul><ul><li>HVAC system includes: </li></ul><ul><ul><li>2 – 300 ton Turbocor chillers </li></ul></ul><ul><ul><li>Oil-less VFD centrifugal compressors </li></ul></ul><ul><li>First year savings with OptimumHVAC: </li></ul><ul><ul><li>Reduced energy consumption by 500,000 kWh </li></ul></ul><ul><ul><li>Lowered operating expenses by $80,000 </li></ul></ul><ul><ul><li>Decreased carbon emissions by 600,000 lbs </li></ul></ul><ul><ul><li>Improved wire to water kW/ton 45%; down from 1.26 kW/ton to 0.68 kW/ton </li></ul></ul><ul><ul><li>Received a utility rebate of $105,000 </li></ul></ul><ul><li>Energy savings resulting from the use of OptimumHVAC assisted the Aventine building in increasing its ENERGY STAR rating to 100 </li></ul>
    14. 14. University of La Verne <ul><li>Century-old (118 years) campus in </li></ul><ul><li>La Verne, CA </li></ul><ul><li>HVAC system includes: </li></ul><ul><ul><li>1 – 400 ton York chiller </li></ul></ul><ul><ul><li>1 – 390 ton Smardt Turbocor chiller </li></ul></ul><ul><li>First year savings with OptimumHVAC: </li></ul><ul><ul><li>Reduced energy consumption by 150,000 kWh </li></ul></ul><ul><ul><li>Lowered operating expenses by $23,000 </li></ul></ul><ul><ul><li>Decreased carbon emissions by 164,000 lbs </li></ul></ul><ul><ul><li>Improved wire to water kW/ton 46%; down from 0.92 kW/ton to 0.50 kW/ton </li></ul></ul><ul><ul><li>Received a utility rebate of $14,000 </li></ul></ul>
    15. 15. Burnham Medical Research Institute <ul><li>Nine buildings (totaling 210,000 sq. ft.) medical research facility in </li></ul><ul><li>San Diego, CA </li></ul><ul><li>HVAC system includes: </li></ul><ul><ul><li>3 – 450 ton chillers in Main Plant </li></ul></ul><ul><ul><li>2 – 350 ton chillers in Bldg 10 </li></ul></ul><ul><li>First year savings with OptimumHVAC: </li></ul><ul><ul><li>Reduced energy consumption by 2,400,000 kWh </li></ul></ul><ul><ul><li>Lowered operating expenses by $290,000 </li></ul></ul><ul><ul><li>Decreased carbon emissions by 3,100,000 lbs </li></ul></ul><ul><ul><li>Improved wire to water to 0.54 kW/ton in Main Plant and 0.45 kW/ton in Bldg 10 </li></ul></ul><ul><ul><li>Received a utility rebate of $460,000 </li></ul></ul><ul><ul><li>Simple payback of 1.34 years </li></ul></ul>
    16. 16. Optimum HVAC – Setting a New Standard <ul><li>Enterprise application approach to commercial HVAC systems for a low-risk optimization solution </li></ul><ul><li>End-to-end delivery model </li></ul><ul><ul><li>Building assessment and engineering </li></ul></ul><ul><ul><li>Continuous, automatic HVAC system optimization for energy efficiency </li></ul></ul><ul><ul><li>Web-based, real-time M&V for guaranteed persistent performance </li></ul></ul><ul><li>Economic and environmental results </li></ul><ul><ul><li>12 to 36 month ROI achieved by lowering HVAC energy costs 30- 60% </li></ul></ul><ul><ul><li>Achieves a new industry standard of 0.5 kW/ton for entire chiller plant </li></ul></ul><ul><ul><li>Green credentials: Earn LEED points; Energy Star rating </li></ul></ul>
    17. 17. Next Steps
    18. 18. <ul><li>Thank You </li></ul><ul><li>For more information, please contact: </li></ul><ul><li>Joe Pessa, Account Executive </li></ul><ul><li>Phone Number 860-502-5258 </li></ul><ul><li>Email </li></ul><ul><li> </li></ul>