Tips on staying Lean and Green: Energy Audits
At Osborne Wood Products, we are excited about the opportunity we have to inspire those around us to make changes for the better. Featuring the information that we have on Lean Manufacturing and on eco-friendly ways of doing business, we are certain that many of you have seen how being “lean” and being “green” can go hand in hand. Today’s post is no exception. We recently decided to do an energy audit, in the interest of Lean Manufacturing, but have realized its implications for helping us to be a greener business, too!
This week we had Bob Hitch come and do an energy audit for us. Hitch is the Project Manager for Energy and Environmental Services at Georgia Tech Enterprise Innovation Institute. He came out to the plant and took a good look at the way we operate, analyzing data, and making observations. While some of that data is still being transformed into usable reports, we have already been able to draw several action points from the audit. Although one of the end goals of an energy audit is a smaller energy bill, the actual measuring rod - so to speak- is kilowatt usage per hour (kwh), so what we are looking for is an overall reduction in kwh from month to month.
We were able to discern the three biggest energy-users in our plant, which is integral to determining how to decrease energy consumption without hindering productivity. In our plant, the Big Three were our dust collection system, the production equipment, and the air conditioning system (during cooling months).
Here are some of the action points derived from that data:
1) The dust collection system has a maximum capacity of 45,000 cubic feet per minute of air removal, but not all of the intakes on the system are constantly in use. We are looking at the possibility of gating the intakes and cycling down the motor using a variable speed drive in order to consume less energy.
2) We are already using High Efficiency T5 (energy reducing) lighting in the offices, and we are currently looking at implementing the use of this same lighting in the shop.
3) We are looking at what the optimal temperature is for each area of the plant (office, warehouse, production floor) to keep the workload on the AC/Heating system as low as possible, while still ensuring a) optimal temperature for working and storing of wood products, and b) comfort of employees.
The data collected from this audit is turned into charts and graphs, giving us easily read sources to compare the usage against in the coming months.
These changes do more than just save money and streamline our processes. They enable us to use less energy, reducing our carbon-footprint even more. This is a great example of how Lean and Green go hand in hand. Waste not, want not, as the old adage goes. Energy Audits and subsequent practical analysis helps you to “waste not” your monetary resources and the resources this planet has to offer!

