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Taking the Measure   


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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)


May 6, 2008
In response to: Measurement drives green engineering
CATHERINE commented:

Modern society can never become "green" enough -- Alternative Energies are also Destructive and Evil How can Alternative Energies be good when they require materials that originated from places that all environmentalists say are "evil and destructive"? Alternative Energies require "bad" materials for assembly, such as ceramics, carbons, and metals from Mines, and sometimes plastics and other carbon-based materials, which originate from Oil Wells and Coal mines that environmental groups say are all "evil and destructive". Even “natural” plant fiber materials require machinery and processing and transportation, which also require metals, ceramics, and carbon. From where do we get the SOURCE materials for wind mills, fuel cells, hydrogen and other alternative energies? Most solar electric panels require ceramics and special elements, such as gallium, arsenic, germanium, etc., that came from mines and smelters. Windmills require metals (originally from mines and smelters). Passive and active solar ventilation and tubing for houses usually require metals and sometimes ceramics, which came from mines and smelters. Environmental groups say that ALL Mining and Oil / Gas Wells are "bad" and "evil", even with full-scale reclamations and restorations. So how can we go to Alternative Energies when these requires materials that are not accepted by the Environmentalists? Even fuel cells require materials originally from mines and smelters. Fuel cells have to have metals and / or ceramics for the containment, tubing, chemical reactions, etc. The cells, containments and associated materials use materials from mines and oil wells. Think about the engineered things used to even make hydrogen fuel get started for producing energy. Look at the Periodic Table of all the elements of the earth. Hydrogen (H2) is a usually a gas. When hydrogen is used in a chemical bonding or mixture, it is usually released as a single free ion (H- or H+). Sometimes getters are used to store and transport hydrogen. It is the cells and containments and associated materials that use materials from mines and oil wells. Go and look at the engineered things used to even make hydrogen get started! To make Hydrogen "burn" and gain energy from it, there must be the chambers, vessels, tubing, connections and fittings. A characteristic of Hydrogen is that is can embrittle materials over time, especially certain types of metals and steels. Normally stainless steels or other specialty metals are used for most Hydrogen activities. These steels and steels are composed of iron and sometimes chromium and / or nickel to control any corrosion from Hydrogen and also prevent embrittlement as much as possible. The materials for steels ALL come from mines and smelters. But how is hydrogen (H2 and the H ions) produced from water or other source materials? Either in the reaction apparatus and chambers of the cars or else in processing plants, both of which use metals and ceramics and plastics. If we get H2 from the air, we get it from gas separators which are composed of metals and other "bad" materials. Environmentalist point to bicycles as environmentally-friendly transportation. To make bicycles, manufacturers must get materials that originated from mining operations (iron, molybdenum, aluminum, ceramics, etc.), oil wells and coal mines for Carbon and plastic materials, and sometime timber for wood. These materials are then processed in plants that also use products from mining and oil wells, and use electricity. How can this be "good" by any environmentalist's definitions? Look at how many existing Wilderness Areas have abandoned oil / gas wells and also mining sites within their boundaries. Why is that permissible? How is it that reclamations of well drilling sites are either ignored or denied by the environmental groups now? There have been many private groups in the Pacific Northwest (like my grade school in the 1960's) that went out and planted trees, grass, and shrubs in the forests. We even saw some of the lumber companies replanting trees and shrubs. But apparently, none of those good efforts count in the mind of the environmental groups, as seen in recent publications and notifications. Take a deeper look at what really is going on. Natural resources are needed for everything in our lives, even medical items and alternative energies. But when our natural resources are being closed up and as reclamations are either ignored or badmouthed, we are loosing the materials needed for our daily lives, even for the "nice" Alternative Energies. As a final note, my 1990 car gets the same gas mileage GPM as a modern hybrid car. Go figure. In a publication from early 1992, the Sierra Club in Santa Fe openly announced that oil / gas well drillers were still using lead-based (Pb) lubricants. Never mind that the EPA banned their use several years before in the mid-1980s and that the drilling industry had already switched to biodegradable lubricants even before that. Never mind that law enforcement and the EPA later on checked for compliance in the industry. Also, there is new drilling technology, called Coiled Tubing, that allows certain types of well drilling operations from the back of a pickup, thus less impacts than the vehicles you drive. Why don't we don't hear that from the Environmentalists. Are you familiar with the wilderness near Ruidoso, NM, USA? The wilderness boundaries "captured" some gold and silver / lead mines. The government threatened to sue the mine and claim owners with EPA Superfund status if they did not surrender the land for wilderness designation. Now how is it that places that are supposedly EPA Superfund sites can now be "wilderness" and untouched areas? The 1964 Wilderness Act specified that undeveloped, untouched, and natural areas were to be part of the wilderness areas.





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