How Mid-South Metallurgical cut Energy Use by 22%

Mid-South in Murfreesboro, Tennessee operates a high-energy plant providing precision heat treatments for high-speed tools – and also metal annealing and straightening services. This was a great business to be in before the energy crisis struck. That was about the same time the 2009 recession arrived. In no time at all the market was down 30%.

Investors had a pile of capital sunk into Mid-South?s three facilities spread across 21,000 square feet (2,000 square meters) of enclosed space. Within them, a number of twenty-five horsepower compressors plus a variety of electric, vacuum and atmospheric furnaces pumped out heat 27/7, 52 weeks a year. After the company called in the U.S. Department of Energy for assistance, several possibilities presented.

Insulate the Barium Chloride Salt Baths

The barium chloride salt baths used in the heat treatment process and operating at 1600?F (870?C) were a natural choice, since they could not be cooled below 1200?F (650?C) when out of use without hardening the barium chloride and clogging up the system. The amount of energy taken to prevent this came down considerably after they covered and insulated them. The recurring annual electricity saving was $53,000.

Manage Electrical Demand & Power

The utility delivers 480 volts of power to the three plants that between them consume between 825- and 875-kilowatt hours depending on the season. Prior to the energy crisis Mid-South Metallurgical regarded this level of consumption as a given. Following on the Department of Energy survey the company replaced the laminar flow burner tips with cyclonic burner ones, and implemented a number of other modifications to enhance thermal efficiency further. The overall natural gas reduction was 20%.

Implement Large Scale Site Lighting Upgrade

The 24/7 nature of the business makes lighting costs a significant factor. Prior to the energy upgrade this came from 44 older-type 400-watt metal halide fixtures. By replacing these with 88 x 8-foot (2.5 meter) fluorescent fittings Mid-South lowered maintenance and operating costs by 52%

The Mid-South Metallurgical Trophy Cabinet

These three improvements cut energy use by 22%, reduced peak electrical demand by 21% and brought total energy costs down 18%. Mid-South continues to monitor energy consumption at each strategic point, as it continues to seek out even greater energy efficiency in conjunction with its people.

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Energy Cooperation Mechanisms in the EU

While the original mission of the European Union was to bring countries together to prevent future wars, this has spun out into a variety of other cooperative mechanisms its founders may never have dreamed of. Take energy for example, where the European Energy Directive puts energy cooperation mechanisms in place to help member states achieve the collective goal.

This inter-connectivity is essential because countries have different opportunities. For example, some may easily meet their renewable targets with an abundance of suitable rivers, while others may have a more regular supply of sunshine. To capitalise on these opportunities the EU created an internal energy market to make it easier for countries to work together and achieve their goals in cost-effective ways. The three major mechanisms are

  • Joint Projects
  • Statistical Transfers
  • Joint Support Schemes

Joint Projects

The simplest form is where two member states co-fund a power generation, heating or cooling scheme and share the benefits. This could be anything from a hydro project on their common border to co-developing bio-fuel technology. They do not necessarily share the benefits, but they do share the renewable energy credits that flow from it.

An EU country may also enter into a joint project with a non-EU nation, and claim a portion of the credit, provided the project generates electricity and this physically flows into the union.

Statistical Transfers

A statistical transfer occurs when one member state has an abundance of renewable energy opportunities such that it can readily meet its targets, and has surplus credits it wishes to exchange for cash. It ?sells? these through the EU accounting system to a country willing to pay for the assistance.

This aspect of the cooperative mechanism provides an incentive for member states to exceed their targets. It also controls costs, because the receiver has the opportunity to avoid more expensive capital outlays.

Joint Support Schemes

In the case of joint support schemes, two or more member countries combine efforts to encourage renewable energy / heating / cooling systems in their respective territories. This concept is not yet fully explored. It might for example include common feed-in tariffs / premiums or common certificate trading and quota systems.

Conclusion

A common thread runs through these three cooperative mechanisms and there are close interlinks. The question in ecoVaro?s mind is the extent to which the system will evolve from statistical support systems, towards full open engagement.

Saving Energy Step 4 – Breathing Life into the Project

Today we consider the fourth step on the road to energy saving, when we introduce key contributors who will pull it all together. We have been on quite a journey. We started by developing a management system and then followed up with practical improvements, while challenging the assumptions behind the energy bills we may have paid unchallenged in the past.

After we knock off the big-ticket savings, managing energy becomes a process of improvement characterised by smaller increments. Kaizen is the classic model and it includes everybody in the organization from the janitor to the CEO. I inverted the pyramid deliberately, because ideas deserve considering no matter where the originator parks in the company yard.

People ? our people ?are truly central to the process. Energy adds extra leverage to their efforts, keeps them warm in winter, cool in summer and powers up the ovens in the company canteen. They are brimming over with ideas because that is the nature of being human. The best managers are those who release this potential and participate in its flowering,

It is important not to threaten job security. So many savings-driven initiatives have ended in job losses that people on the shop floor automatically suspect another round. Shrinking carbon footprints is about making the world a better place for everyone. We become more effective when we turn ?increasing profit? into making the enterprise sustainable in itself.

Engaging employees is more than office circulars and speeches at the Christmas Party. Organizations are organic places where trust grows slowly but conflict can flare in a moment. Before involving your people in your energy ?kaizan? make sure your words and intentions overlap perfectly. You will be amazed at the power you unlock in your people.

The best way I know of doing this is through your health and safety structure, which then becomes your environment, health and safety structure EHS. As you explore this idea at safety committees you find these things overlap, in the sense of creating people-centric environments at work and home.

That said, there is no magic formula for achieving employee engagement. The fact that people universally want a cleaner planet is the power to tap into. One way to form a team is to create one artificially and give it a task. The other is to work together towards a shared objective. Which one do you prefer?

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