Last year, the Department of Energy (DoE) held framework meetings to investigate how efficiency regulations might be established for motor-driven systems in fan, pump, and air compression applications. Since industrial motor efficiency is nearing its theoretical maximum, system efficiency is the next logical focus for improvement. Recent regulations for 1-HP to 500-HP three-phase motors, as well as the Small Motor Rule for 0.25-HP to 3-HP single- and three-phase open drip-proof motors, are expected to complement the system regulations.
The issues the DoE has been discussing include how efficiency would be measured, what components would be in the system, and what installation practices should be followed. Some of these systems are already regulated in Europe, so harmonization with those standards may be a possibility. Industry trade associations for these groups are also involved in the discussions.
There is likely to be a multi-year study before the DoE proposes any standards. However, new negotiated regulation procedures may speed along the process.
Excellent information John. I just hope the DOE continues to include industry when determining development to standards or altering existing standards. I would hope also all efforts include looking at existing standards and methodology for developing standards relative to global sales and marketing. If we can develop products that can be used in Western Europe and possibly the Far East "up front" we will be money ahead in the long run. I retired from a company that made considerable efforts to adapt products designed for US markets to European markets. In the long run, the efforts provide products that simply did not compete.
While improving efficiency is a valid target, the creation of rules will undoubtedly lead to problems because firm rules seldom are able to cover all conditions. So instead, how about just creating a uniform standard for measuring and reporting efficiency and not making so many rules. In some instances efficiency is far from the most important consideration, seldom used emergency equipment and systems being one example.
DOE is working with the fan group on how they will test. They only want to cover the fan and not a complete system. The proposal is to use a motor with an efficiency as high or higher then the original that was certified with the fan as static pressure changes and larger motors are needed.
For pumps, the group is looking at a similar EU regulation and test methods set up by the Europump organization which takes all components into consideration making it closer to a plug to water efficiency.
These proposals will be studied by DOE and their technical partners at Lawrence Berkely Labs. There will be chance for public comment during the rulemaking process.
John, as of now energy auditing & testing bureau are offering various star rating to the devices based on certain parameters. In general it depends up on energy consumption and efficiency. But how the new system is going to define these parameters?
Iterative design — the cycle of prototyping, testing, analyzing, and refining a product — existed long before additive manufacturing, but it has never been as efficient and approachable as it is today with 3D printing.
People usually think of a time constant as the time it takes a first order system to change 63% of the way to the steady state value in response to a step change in the input -- it’s basically a measure of the responsiveness of the system. This is true, but in reality, time constants are often not constant. They can change just like system gains change as the environment or the geometry of the system changes.
At its core, sound is a relatively simple natural phenomenon caused by pressure pulsations or vibrations propagating through various mediums in the world around us. Studies have shown that the complete absence of sound can drive a person insane, causing them to experience hallucinations. Likewise, loud and overwhelming sound can have the same effect. This especially holds true in manufacturing and plant environments where loud noises are the norm.
The tech industry is no stranger to crowdsourcing funding for new projects, and the team at element14 are no strangers to crowdsourcing ideas for new projects through its design competitions. But what about crowdsourcing new components?
It has been common wisdom of late that anything you needed to manufacture could be made more cost-effectively on foreign shores. Following World War II, the label “Made in Japan” was as ubiquitous as is the “Made in China” version today and often had very similar -- not always positive -- connotations. Along the way, Korea, Indonesia, Malaysia, and other Pacific-rim nations have each had their turn at being the preferred low-cost alternative to manufacturing here in the US.
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