How Alcoa Canned the Cost of Recycling

Alcoa is one of the world?s largest aluminium smelting and casting multinationals, and involves itself in everything from tin cans, to jet engines to single-forged hulls for combat vehicles. Energy costs represent 26% of the company?s total refining costs, while electricity contributes 27% of primary production outlays. Its Barberton Ohio plant shaved 30% off both energy use and energy cost, after a capital outlay of just $21 million, which for it, is a drop in the bucket.

Aluminium smelting is so expensive that some critics describe the product as ?solid electricity?. In simple terms, the method used is electrolysis whereby current passes through the raw material in order to decompose it into its component chemicals. The cryolite electrolyte heats up to 1,000 degrees C (1,832 degrees F) and converts the aluminium ions into molten metal. This sinks to the bottom of the vat and is collected through a drain. Then they cast it into crude billets plugs, which when cooled can be re-smelted and turned into useful products.

The Alcoa Barberton factory manufactures cast aluminium wheels across approximately 50,000 square feet (4,645 square meters) of plant. It had been sending its scrap to a sister company 800 miles away; who processed it into aluminium billets – before sending them back for Barberton to turn into even more wheels. By building its own recycling plant 60 miles away that was 30% more efficient, the plant halved its energy costs: 50% of this was through process engineering, while the balance came from transportation.

The transport saving followed naturally. The recycling savings came from a state-of-the-art plant that slashed energy costs and reduced greenhouse gas emissions. Interestingly enough, processing recycled aluminium uses just 5% of energy needed to process virgin bauxite ore. Finally, aluminium wheels are 45% lighter than steel, resulting in an energy saving for Alcoa Barberton?s customers too.

The changes helped raise employee awareness of the need to innovate in smaller things too, like scheduling production to increase energy efficiency and making sure to gather every ounce of scrap. The strategic change created 30 new positions and helped secure 350 existing jobs.

The direction that Barberton took in terms of scrap metal recycling was as simple as it was effective. The decision process was equally straightforward. First, measure your energy consumption at each part of the process, then define the alternatives, forecast the benefits, confirm and implement. Of course, you also need to be able to visualise what becomes possible when you break with tradition.

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How Energy Management Software Benefits Your Business

We’re in an era of price volatility in gas and electricity prices, coupled with greater scrutiny on the environmental impact of businesses in their day-to-day operations. According to the Department of Energy & Climate Change, the average SME can slash its energy bill by 18-25% simply by installing energy efficiency solutions in their facility. 

Are you looking to improve energy use in your business? Prevent wastage, track consumption, identify opportunities to save on energy and reduce your carbon footprint while at it? It can be a daunting process to do it all manually. Taking those meter readings, preparing spreadsheets and combing through quotes and energy bills to validate them – this is not something you should be enduring in this day and age. Not when there are dedicated systems built for the task. That’s where Energy Management Software (EMS) comes in. 

Importance Of Energy Management Software

Wasted energy = Wasted money

Failing to improve energy efficiency is costing SMEs loads of funds, with it coming to between £5,801 and £12,109 of missed annual savings for individual businesses. These are 18% – 24% of their energy costs. Where do you stand?

Take timers and thermostats for instance. When not properly set and controlled, or even simply forgetting to turn them down when not in the room, it can easily lead to unnecessary costs. How often do your staff forget to turn off the air conditioning when they leave the meeting rooms? Do you account for weekends or bank holidays when setting the controls of the AC? Mistakes like turning the temperature high on the thermostat to “quickly warm the room” are common, yet heating costs go up by about 8% with every 1°C rise.

There are installations that you can make to minimize wastage. For example, the Chinese Contemporary Arts Centre in Manchester is able to save £4,363 annually just by having a £100 timer installed to its heating system. 

Some energy saving measures won’t even cost you a penny. For instance, did you know that you can save up to 30% of your heating costs simply by preventing cold air from entering the building? This means not keeping the doors just open for convenience. So how can you find points of weakness and areas of improvements in your facility? Install an EMS. 

While businesses vary from one industry to the next, energy management basically boils down to:

  • Metering systems where the consumption is recorded
  • Determining how much energy can be saved by identifying opportunities for this
  • Implementing policies and changing existing systems to take advantage of these opportunities
  • Tracking progress after the improvements have been made

 

Benefits Of EMS For Your Business

Data Acquisition – Where accuracy and reliability matters

Energy data comes from different angles and formats. From the building automation systems and IoT devices that have been set up, bills sent in by the utility company to the spreadsheets needed to analyse them – what if you had it all from one point of reference? The EMS gives you a “bird’s eye view” of all your energy data from one interface. It collects the data from any system – and being cloud-based, is accessible from anywhere in the world. 

The ecoVaro data loggers can be connected with the Wi-Fi network of the facility or function independently, depending on your specific requirements. They monitor readings 24/7, retaining the data even when they have been powered off. The end-to-end encryption assures you of the security of the information that is being obtained. 

Integrating the EMS into the existing systems will simplify the data collection process, and even for the cases where there isn’t a direct method transferring the data into the system, the setup wizards that come with the EMS allow you to prepare the required data and import it. 

Data Analysis: From consumption, energy leaks to areas of improvement

The first step is accurately collecting the data. The next step is making sense of it. The analysis modules with the EMS allow you to monitor the energy consumption of the facility in real-time. 

The energy data is displayed in engaging graphics that are easy to understand at a glance. The dashboard setup, with its customised layout, enables you to monitor the performance of the specific information you want, toggling through usage and savings data, to the meters and sites that are being tracked. With the ecoVaro Energy Management Software, you get Consumption Charts, Regression Charts, Cusum Charts and Heatmaps right to the submeter level. This information can be broken down into 15-minute durations, with the daily, weekly and monthly consumption reports. 

Getting everyone on board

Making changes to company-wide energy policies needs to have the different parties on board – from the energy manager in charge of crunching the numbers and presenting the information, the CFO of the business, the staff running day-to-day operations, all through to plant operators for those in industries. An easy mode of communication is needed, that will be understood and availed in reports that can be shared with the relevant parties in the organization. The graphical displays that come with the EMS enable actionable information to be displayed in a simplified manner – that way all members of the business or organization will be able to comprehend it. 

Meet your Energy Goals

The baseline that is created in the EMS is used as a standard when assessing the impact of future changes to the energy consumption. Using the information that has been obtained, the management can set up energy saving policies and implement changes, and track KPIs (key performance indicators) along the way. For instance, the market research company DJS Research installed a timer switch that turns off their two water coolers when they aren’t in use. This action saves them £144 annually, and had already paid for itself within 35 days.   

You will be in a position to assess the actions that provide your business with the best ROI over time, monitoring the progress and verifying the savings from one central dashboard. Cutting costs here will enable you to divert the funds to other areas of your business, including promotions, marketing, and product development.

For businesses in the energy sector- including electric, oil and gas plants, they specifically need carbon emission reports, to pinpoint areas where the building’s energy efficiency can be improved. ecoVaro EMS allows you to set alarms and KPIs in the facility for issues to be identified and resolved immediately they crop up. 

Turn to ecoVaro

EMS systems are used across the board – from optimising energy use in hotel rooms and hospitals, mapping out usage patterns for those in the agriculture and supply chain niches, running facilities for utility providers, all through to increasing the efficiency of equipment operation for business in the food and beverage sector. Want to learn how you can cut down your energy bills and make your business more eco-friendly? EcoVaro’s team is ready to get you started.

FUJIFILM Cracks the Energy Code

FUJIFILM was in trouble at its Dayton, Tennessee plant in 2008 where it produced a variety of speciality chemicals for industrial use. Compressed-air breakdowns were having knock-on effects. The company decided it was time to measure what was happening and solve the problem. It hoped to improve reliability, cut down maintenance, and eliminate relying on nitrogen for back-up (unless the materials were flammable).

The company tentatively identified three root causes. These were (a) insufficient system knowledge within maintenance, (b) weak spare part supply chain, and (c) generic imbalances including overstated demand and underutilised supply. The maintenance manager asked the U.S. Department of Energy to assist with a comprehensive audit of the compressed air system.

The team began on the demand side by attaching flow meters to each of several compressors for five days. They noticed that – while the equipment was set to deliver 120 psi actual delivery was 75% of this or less. They found that demand was cyclical depending on the production phase. Most importantly, they determined that only one compressor would be necessary once they eliminated the leaks in the system and upgraded short-term storage capacity.

The project team formulated a three-stage plan. Their first step would be to increase storage capacity to accommodate peak demand; the second would be to fix the leaks, and the third to source a larger compressor and associated gear from a sister plant the parent company was phasing out. Viewed overall, this provided four specific goals.

  • Improve reliability with greater redundancy
  • Bring down system maintenance costs
  • Cut down plant energy consumption
  • Eliminate nitrogen as a fall-back resource

They reconfigured the equipment in terms of lowest practical maintenance cost, and moved the redundant compressors to stations where they could easily couple as back-ups. Then they implemented an online leak detection and repair program. Finally, they set the replacement compressor to 98 psi, after they determined this delivered the optimum balance between productivity and operating cost.

Since 2008, FUJIFILM has saved 1.2 million kilowatt hours of energy while virtually eliminating compressor system breakdowns. The single compressor is operating at relatively low pressure with attendant benefits to other equipment. It is worth noting that the key to the door was measuring compressed air flow at various points in the system.

ecoVaro specialises in analysing data like this on any energy type.?

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Saving Energy Step 2 ? More Practical Ideas

In my previous blog, we wrote about implementing a management system. This boils down to sharing a common vision up and down and across the organisation, measuring progress, and pinning accountability on individuals. This time, we would like to talk about simple things that organisations can do to shrink their carbon footprints. But first let’s talk about the things that hold us back.

When we take on new clients we sometimes find that they are baffled by what I call energy industry-speak. We blame this partly on government. We understand they need clear definitions in their regulations. It’s just a pity they don’t use ordinary English when they put their ideas across in public forums.

Consultants sometimes seem to take advantage of these terms, when they roll words like audit, assessment, diagnostic, examination, survey and review across their pages. Dare we suggest they are trying to confuse with jargon? We created ecoVaro to demystify the energy business. Our goal is to convert data into formats business people understand. As promised, here are five easy things your staff could do without even going off on training.

  1. Right-size equipment? outsource peak production in busy periods, rather than wasting energy on a system that is running at half capacity mostly.
  2. Re-Install equipment to OEM specifications ? individual pieces of equipment need accurate interfacing with larger systems, to ensure that every ounce of energy delivers on its promise.
  3. Maintain to specification ? make sure machine tools are within limits, and that equipment is well-lubricated, optimally adjusted and running smoothly.
  4. Adjust HVAC to demand ? Engineers design heating and ventilation systems to cope with maximum requirements, and not all are set up to adapt to quieter periods. Try turning off a few units and see what happens.
  5. Recover Heat ? Heat around machines is energy wasted. Find creative ways to recycle it. If you can’t, then insulate the equipment from the rest of the work space, and spend less money cooling the place down.

Well that wasn’t rocket science, was it? There are many more things that we can do to streamline energy use, and coax our profits up. This is as true in a factory as in the office and at home. The power we use is largely non-renewable. Small savings help, and banknotes pile up quickly.

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