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Measurement drives green engineering
May 6, 2008
Have we reached peak oil? I guess we know where Paul Rako stands on that question, but other observers don’t necessarily agree with him. Whatever your thoughts, with oil at $122 per barrel, it seems prudent to minimize its use.
In fact, soaring energy costs are one of three factors driving green engineering, according to Joel Shapiro at National Instruments. In a phone interview today, he said, “There is a huge effort now centered around green engineering,” which he defines as the process of using measurement and control techniques in the design, development, and improvement of products to yield environmental and economic benefits.
High energy costs are bringing economic benefits to the forefront. For purchasers of automobiles, Shapiro said, fuel economy is “one of the top-two care-abouts,” as opposed to the seventh or eighth place it might have occupied a year ago.
In addition to high energy costs, Shapiro said, the other two factors driving green engineering are concerns about climate change and (related to climate change and energy costs) efforts to comply with government mandates. With regard to mandates, he said that 50 countries, including 13 developing countries, have some form of environmental legislation or incentive programs in place. As an example, he cited China, which currently obtains only 0.3% of its energy from renewable sources today but is mandated to increase that to 10% by 2025.
With regard to climate change, Shapiro cited Al Gore’s address to the 2007 Embedded Systems Conference: "The earth has a fever. We all need to take care of it now, and science and engineering must lead the way."
How should engineers and scientists proceed? They must measure the problem in order to fix it, Shapiro said. He cited this statement from Linda Fisher, the chief sustainability officer at DuPont, as quoted in the Economist: “We find with energy and greenhouse gases, if you start to measure, people reduce the usage.”
Not surprisingly, NI is touting its products as ones that can help with the measurements, but Shapiro added that NI’s graphical programming environments, domain-specific libraries, modular instruments, and FPGA support can also serve in a real-time iterative process involving design as well as measurement. Applications in which NI has provided products, he said, include environmental monitoring at the La Selva Biological Station and, for Energy to Quality fault-injection tests that enable wind turbines to remain connected to the grid when most needed. He also cited Nucor Steel Marion, which made use of green engineering techniques to save energy in a facility that turns scrap into rebar. Shapiro cited Dave Brandt, an engineer at Nucor, as agreeing with DuPont’s Fisher. “Once you start monitoring something in an automation system, you can fix things,” Shapiro quoted Brandt as saying.
Efforts to bring wind turbines online and to improve the efficiency of steel mills might seem to offer the biggest opportunities for green engineering. But Shapiro said NI is also focusing on less obvious opportunities—such as the measurement of vampire currents—which household appliances can draw even when not turned on, running up significant electric bills
What do you think of green engineering—hype, or the hope of the future? Have you been involved in a green-engineering effort? Leave a comment.
Posted by Rick Nelson on May 6, 2008 | Comments (1)