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Mechanical power transmission
Published in William Bolton, Engineering Science, 2020
For an ideal machine where there are no frictional forces, mechanical energy is conserved and so the work done by the effort must equal the work done by the load: effort×distance moved by effort=load×distance moved by load
The Impossible Often Is Possible: How to Increase the Ideality of the System
Published in Rantanen Kalevi, Conley David W., Domb Ellen R., Simplified TRIZ, 2017
Rantanen Kalevi, Conley David W., Domb Ellen R.
Instead of the term “ideal system,” we can use terms such as “ideal machine,” “ideal process,” and “ideal substance” (or “ideal material”). The ideal machine does not exist, but its job gets done. The ideal process is one that consumes no energy and no time, but produces the desired product or service. The ideal substance is one (nonexistent) having all needed features. Here are examples of each variation: I want to produce parts, but I do not want to build a factory with lots of specialized machine tools. The current solution, which is on the way to an i deal solution, is the stereo lithography system that can produce parts from a three-dimensional CAD file and a selection of metal, plastic, and ceramic powders.I want to go to exotic places, but I do not want to spend time traveling. Old solution: read a book. New solution: visit websites that have real-time cameras in exotic places. The Star Trek solution—instantaneous travel—is impossible now, but it may be possible in the future.I want clean clothes, but I do not want to do the work of washing them. Two pathways exist up this “mountain.” Along one path are services that take your clothes, wash them, and return them without any work on your part (but the cost is not zero). Along the other path are machines that wash and dry clothes with increasing sophistication (sorting, selecting the right temperatures and wash methods, etc.), but the machines and the chemicals also have nonzero cost. The next step on this path, currently being tested by several manufacturers, is the incorporation of ozone-generating materials in the machine so that soap or detergent will not be needed, reducing the operating cost and reducing the harm that the wastewater does to the environment.
Refuse-derived fuel for diesel engine utilizing waste transformer oil
Published in Biofuels, 2021
T. R. Preethivasani, T. Senthilkumar, M. Chandrasekar
Mechanical efficiency (ηmech) measures the effectiveness of a machine in transforming the energy and power that is input to the device into an output force and movement. Efficiency is measured as a ratio of the measured performance to the performance of an ideal machine. The variation of mechanical efficiency with respect to brake power for transformer oil-diesel blends and diesel fuel is shown in Figure 12. It can be observed that the mechanical efficiency increases with an increase in brake power. The mechanical efficiency increased by 4.10% when B20 was used, and there was an increase of 4.70% with RB20.