Presentation archive

To find an archived presentation, click on the year to expand the list.  To hide the list, click on the year again.

»
Presentations from 2009

Paper | CWWI 2009 | September 1-3, 2009 | Yorkshire, UK

»
Improving Energy Efficiency of Pumping Systems
Through Real-Time Scheduling Systems

Paper given by Laurie Reynolds of Mouchel at the 2009 Computing & Control in the Water Industry Conference.  It covers some of the fundamentals on energy use and energy optimisation for water distribution systems. |  ABSTRACT: Optimization of water supply systems has been the subject of many papers over the past 20 years of CCWI conferences. Most papers have proposed various methods for off-line optimisation of complex networks to take advantage of low-priced energy tariffs, whereby the cost saving is achieved by rescheduling as much of the pumping load as possible to occur at night when the energy tariff is lowest. Whilst cost saving through time-of-use scheduling is an attractive opportunity for water companies, it does not save actual energy, it simply redistributes its use; consequently, there is no saving in carbon emissions. The only way the system can be operated more efficiently and hence save carbon as well as energy cost, is if the pumps themselves can be operated more efficiently.The paper presents results following implementation of a closed-loop, real-time optimizer to four actual water supply systems in US. The data shows that by measuring the efficiency of each pump in real-time and ensuring that each pump in the system is positioned as close as possible to its best-efficiency point, significant improvements in average efficiency of between 6–9% can be made in addition to the 10% time of use savings. This in turn translates into real reductions of the carbon footprint.  

sm_33.gif  Download a PDF of the paper  

 

Presentation | AWWA DSS 2009 | September 1, 2009 | Reno, Nevada 

»
Managing Distribution, Storage &
Pumping to Reduce Energy Cost

Tom Nevins (Black & Veatch) and Chuck Weber (Water District No.1 of Johnson County, KS (WaterOne)) presented a paper at the 2009 AWWA DSS on water storage management. | This took into account emergency reserves, fire fighting reserves and equalization volumes to determine safe operating levels.  The paper showed that distributing water around the various storage sites kept risk low as long as total water stored was sufficient to meet the emergency and fire reserve requirements. This project was commissioned by WaterOne to ensure that their Aquadapt implementation was given safe operating constraints on storage without unduly impacting on their ability to save on energy costs.  

 

icon-ms-powerpoint.gif  Download the PowerPoint presentation

 

Presentation | AWWA DSS 2009 | September 1, 2009 | Reno, Nevada

»
Water Production and Distribution
Real-Time Energy Management

Brian Skeens (CH2M Hill) and Neal Spivey (Gwinnett County DWR) presented a paper on "Water Production and Distribution Real-Time Energy Management" at the 2009 AWWA DSS conference. | This presented the project overview, design and implementation of Derceto Aquadapt for Gwinnett County in Georgia.    

icon-ms-powerpoint.gif  Download the PowerPoint presentation 

 

Presentation | AWWA DSS 2009 | September 1, 2009 | Reno, Nevada 

»
Aging Pump Performance, the Hidden Cost Thief?

Simon Bunn (Derceto CTO) presented this paper at the AWWA DSS conference in Reno, Nevada in 2009. | It discusses empirical work done on hundreds of analyzed pumps to determine if pump peak-efficiency deterioration can be determined by measuring the decline in head/flow curves.  It also looks at pump refurbishment, replacement and use of variable speed drives to reduce energy consumption and hence cost, plus greenhouse gas reductions.

sm_33.gif  Download a PDF of the presentation  

 

Presentation | BPU Build Green Conference 2009 | April 2, 2009 | Kansas City, KS

»
WaterOne Presentation: Energy Saving Achieved by WaterOne Using Derceto Energy Management Software

WaterOne's Tom Schrempp presented at the 2009 Kansas BPU Build Green Conference on the energy savings WaterOne has achieved following the implementation of Derceto's Aquadapt software. |  WaterOne engaged Derceto to study opportunities to reduce energy demands and increase savings on energy costs.  The intial study showed WaterOne potential savings of at least $800,000.  The Aquadapt software was installed in May 2006 and each year, the savings achieved has increased.  

sm_33.gif  Download a PDF of the presentation

 

»
Presentations from 2008

Presentation | AWWA DSS 2008 | September 21-24, 2008 | Austin, Texas 

»
Taking SCADA One Step Forward: A Case Study

In a joint presentation, Chuck Weber of WaterOne, KS, and Simon Bunn, CTO of Derceto, presented a paper at the AWWA DSS 2008 on the implementation of an innovative water operations optimizer into Water District No.1 of Johnson County (WaterOne) in Kansas. The paper tracks the development of the modern "glass window" into operations provided by modern SCADA systems and the opportunity this platform presents to provide a gateway for a range of add-on solutions.  Energy efficiency and cost savings results from a number of years of operation were presented.

icon-ms-powerpoint.gif  Download the PowerPoint presentation  

 

Presentation | AWWA DSS 2008 | September 21-24, 2008 | Austin, Texas 

»
Pump Efficiency Improvement

Derceto's CTO Simon Bunn presented this paper at the AWWA DSS Conference in Austin Texas in September 2008. | Pumping water is a major energy user; up to 3% of all US power is consumed by water and wastewater pumps. This presentation looks at technology to improve pump efficiency, including: coatings, refurbishment and optimal scheduling.  Results from a number of trials and implementations are presented that show efficiency improvements of 10% to 20% can be achieved.  

 

White paper | Aqua Enviro Conference 2008: Energy Saving Strategies for Water & Wastewater Treatment | September, 2008 | Birmingham, UK

»
Reducing Energy Demand in Water Supply
through Real-Time Scheduling and Operation

Paper given at the 2008 Aqua Enviro Conference in Birmingham, UK in 2008 by Laurie Reynolds (Mouchel Ltd). | Electricity consumption by water and wastewater utilities accounts for 3% of all energy consumption in the UK. Clean water pumping alone uses 4.4 billion kWh in the UK worth £200M in 2007. Between 90% and 95% of the electricity purchased is used for pumping. Energy efficiency investments can have excellent returns of 5% to 25% or better and have additional benefits in reducing the greenhouse gas footprint of the utilities. While significant progress has been made in analyzing individual pumps and matching characteristics to actual duty requirements, these have relied on a single duty reference point. In reality, pump operating requirements are subject to highly variable seasonal and diurnal demand - making it impossible to adequately cover all eventualities. Pumping facilities and water distribution networks have become highly interconnected and complex systems. Pumps therefore do not operate in isolation; in fact due to the incompressibility of water it is typical that any change in operation of one pump may affect the operating point of many other pumps in the distribution system.

 

White paper | AWWA ACE 2008 | June, 2008 | Atlanta, Georgia

»
Operating Pumps to Optimize Efficiency
and Minimize your Carbon Footprint

Paper given by Derceto CTO Simon Bunn and Cary Hillebrand at the AWWA ACE 2008 in Atlanta GA | For water utilities, electricity is usually the second highest operating cost. With pumping dominating energy consumption, the prudent utility will make every effort to both install the most energy efficient pumps for the application, and to operate pumps in the most cost efficient manner possible.  The characteristics of a typical centrifugal pump make this a difficult task and as time goes on the actual pump operating curve will migrate significantly from the manufacturer’s curve making it harder still. This presents a challenge to the operator to dynamically run pumps at more efficient points on their operating curves. It is recommended that when selecting an Energy Management System (EMS), typically used to schedule pump stations to leverage off peak tariffs, that it also be capable of planning the operation of pump combinations while maintaining defined system boundary conditions and meeting water production requirements.Where a pump actually operates, and the degree of efficiency is dependent on the system curve, which is determined by the hydraulics of the system the pump is installed into.  The Total Dynamic Head (TDH) across the pump sets the operating point and is significantly affected by the water demand seen by the pump.  Even a small increase in TDH can drive the operating point a long way left or right on the curve with a subsequent drop in efficiency.  It is not uncommon to see pumps with a BEP of 85% efficiency actually operating at 60% efficiency or lower when operating with only a slight increase in discharge head over design.    

sm_33.gif  Download a PDF of the paper 

 

White paper | SIDISA 2008 | June 24-27 | Florence, Italy 

»
Operations Optimization of Water Distribution
Systems to Achieve Energy Conservation

Paper presented at the SIDISA 2008 conference in Florence, Italy by Derceto Chief Technical Officer Simon Bunn |  The use of advanced control to improve water quality and increase energy efficiency has long been a goal of water utilities following the introduction of centralized SCADA systems in the 80’s and 90’s.  In the US and UK 3% of all electricity production is used for water and wastewater systems, with more than 90% of the energy purchased being used for pumping. This paper discusses the application of a novel, fully automatic, operations optimization software addition to SCADA designed for treated water systems, including results from many years of operation in four major US water utilities.  The software targets reduction of the energy cost to supply water to customers while maintaining agreed water quality and service constraints such as storage levels and pressures.  Although this system originally was anticipated to achieve most cost savings from electrical load management against tariff patterns, it has been particularly effective at improving pumping efficiency. Results from the four case studies are presented showing how efficiency improvements can be generated from existing assets in pump stations with both matched and mixed size pumps.  With improved efficiency comes a reduction in the greenhouse gas footprint of the utility, measured in thousands of tons per year. The methodology used to quantify the CO2 savings is also presented.  
 

sm_33.gif  Download a PDF of the paper 

 

Presentation | CA-NV AWWA  2008 | Spring, 2008 | Hollywood, CA    

»
Support AB32 GHG Reductions
and Save Cost as Well?

Derceto General Manager Wayne Spittal presented this paper at the 2008 AWWA CA-NV Spring Conference in Hollywood, CA. | The subject is Greenhouse Gas reduction through energy efficiency improvments for water utilities and presents findings from a number of case studies on improvements that have been achieved purely through software applied to pump scheduling.  

 

»
Presentations from 2007

White paper | AWWA Pennsylvania Section 2007 Conference | October 18-20, 2007 | Hershey, PA

»
Energy Savings Analysis Generated by a Real-Time
Energy Management System for Water Distribution

Paper presented by Sarah Thorstensen at the AWWA Pennsylvania Section 2007 Conference in Hershey, PA. |  Washington Suburban Sanitary Commission (WSSC) purchases the bulk of their $19M energy spend on the real time Pennsylvania Jersey Maryland (PJM) Interchange. A substantial portion of this is used for treatment and distribution of potable water.  In 2006 WSSC installed Derceto Inc’s Energy Management System to control electrical load at all points in the potable water treatment and distribution system to manage and, where possible, reduce the cost of energy purchases. The real-time energy market offers considerably lower cost energy over-night compared to peak times during the day so load movement can lead to substantial savings. The energy management system also makes savings in efficiency, where less kWh are used to move the same volume of water through improved operation of the pumps on their efficiency curves.  The Derceto supplied system also takes maximum advantage of gravity favoring gravity flow valve stations over pumped stations where possible. The practical task of measuring energy kWh and dollar savings against a baseline proved to be one of the more difficult tasks during the project. Not only must the baseline be able to capture all these forms of savings, it also has the added complexity that water distribution systems are undergoing continuous changes, from equipment failures to new capital expenditure programs that can make it very difficult to measure savings where there is no "before" case to compare against.

This paper describes the methodologies used for the development of an energy management system baseline and performance monitoring tool. Actual examples using real-time and standard offer-of-service energy contracts are presented.

sm_33.gif  Download a PDF of the paper

 

White paper | WEFTEC 2007 | October 13-17, 2007 | San Diego, CA

»
Greenhouse Gas Reduction as an Additional
Benefit of Optimal Pump Scheduling Software

Paper presented by Derceto CTO, Simon Bunn, at WEFTEC 2007. |  The more than 60,000 water systems and 15,000 wastewater systems in the United States are among the country’s largest energy consumers, using about 75 billion kWh/yr nationally – 3 % of the annual U.S. electricity consumption. This figure of 3% is similar in Europe and the UK. Pumping is the prime user of power, typically 95% of the total energy purchases for water utilities are used by pumping plants. Water demand tends to peak in the same diurnal profile as energy demand thereby increasing the need for pumping during peak energy periods and consequently increasing the need for less efficient electricity generators to enter the market to supply energy. These tend to be high green house gas emitting thermal peaking stations driven by coal, diesel, oil or gas. During the off-peak night periods a greater proportion of energy production comes from base-load hydro, wind and nuclear power plants that have zero green house gas emission. Shifting energy use from peak to off peak therefore can significantly reduce the green house gas foot print of a water or wastewater utility with environmental benefits over and above cost savings achieved by purchasing cheaper energy.

sm_33.gif  Download a PDF of the paper    

 

»
Presentations from 2006

White paper | AWWA DSS 2006 | September 17-20, 2006 | Phoenix, Arizona

»
Utilizing Energy and Demand Forecasting as a
Tool to Develop Energy Procurement Strategies

Paper presented and published in conjunction with Eastern Municipal Water District, CA in 2006. |  Energy costs for pumping is typically one of the largest expenses in a water utility’s operations budget. The capability to effectively forecast demand profile and schedule production can be beneficially used to guide the utility to procure energy products (electricity, diesel or natural gas) in a manner designed to contain costs.Many utilities have procurement flexibility for purchasing energy used for pumping. Potential options may include choice of alternative suppliers, trade off between electricity, natural gas, and co-generation, or electricity purchases in a deregulated market. The understanding of, and effective use of a properly designed forecasting tool to project near term demand and energy load profiles will give the operations and purchasing managers the updated information required to make complex decisions, minimizing the risks and leveraging the benefits.

 

Case study

Nov 23 2010

Murray Kennedy,
General Manager,
Utilities and Services,
Greater Wellington Water,
New Zealand. 

$0.00

Latest news