Top Suppliers TU-1D091 thermal wax actuator for industrial thermostatic water regulations mixing valve to Japan Factories
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Top Suppliers TU-1D091 thermal wax actuator for industrial thermostatic water regulations mixing valve to Japan Factories Detail:
1. Operation Principle
The Thermostatic Wax that has been sealed in shell body induces expansion by a given temperature, and inner rubber seal part drives its handspike to move under expansion pressure to realize a transition from thermal energy into mechanical energy. The Thermostatic Wax brings an upward movement to its handspike, and automatic control of various function are realized by use of upward movement of handspike. The return of handspike is accomplished by negative load in a given returned temperature.
2. Characteristic
(1)Small body size, occupied limited space, and its size and structure may be designed in according to the location where needs to work.
(2)Temperature control is reliable and nicety
(3)No shaking and tranquilization in working condition.
(4)The element doesn’t need special maintenance.
(5)Working life is long.
3.Main Technical Parameters
(1)Handspike’s height may be confirmed by drawing and technical parameters
(2)Handspike movement is relatives to the temperature range of the element, and the effective distance range is from 1.5mm to 20 mm.
(3)Temperature control range of thermal wax actuator is between –20 ~ 230℃.
(4)Lag phenomenon is generally 1 ~ 2℃. Friction of each component part and lag of the component part temperature cause a lag phenomenon. Because there is a difference between up and down curve of traveling distance.
(5)Loading force of thermal wax actuator is difference, it depends on its’ shell size.
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Link to the paper:
https://www.mkhamis.com/data/papers/abdelrahman2017chi.pdf
Conference:
ACM CHI 2017, Colorado, USA
Authors:
Yomna Abdelrahman, Mohamed Khamis, Stefan Schneegass, Florian Alt
University of Stuttgart, HCI Group, Germany,
LMU Munich, Ubiquitous Interactive Systems Group, Germany,
Abstract:
PINs and patterns remain among the most widely used knowledge-based authentication schemes. As thermal cameras become ubiquitous and affordable, we foresee a new form of threat to user privacy on mobile devices. Thermal cameras allow performing thermal attacks, where heat traces, resulting from authentication, can be used to reconstruct passwords. In this work we investigate in details the viability of exploiting thermal imaging to infer PINs and patterns on mobile devices. We present a study (N=18) where we evaluated how properties of PINs and patterns influence their thermal attacks resistance. We found that thermal attacks are indeed viable on mobile devices; overlapping patterns significantly decrease successful thermal attack rate from 100% to 16.67%, while PINs remain vulnerable (+72% success rate) even with duplicate digits. We conclude by recommendations for users and designers of authentication schemes on how to resist thermal attacks.
MIT researchers at the David H. Koch Institute for Integrative Cancer Research have developed a new material that changes its shape after absorbing water vapor.
This material is made from an interlocking network of two different polymers. One forms a hard but flexible matrix that provides structural support while the other is a soft gel that swells when it absorbs water. Together these polymers create a material that converts water vapor to energy without the use of an external energy source.
When the 20-micrometer-thick film is exposed to moisture the bottom layer absorbs the evaporated water, forcing the film to curl away from the surface. Once the bottom of the film is exposed to the air, it quickly releases the moisture causing it to somersault forward and start to curl up once more. Researchers were surprised to discover not only does it need a very small amount of vapor, but it also demonstrated a large amount of strength. Using only water vapor as an energy source, the film can lift a load of silver wires 10 times its own weight.
Harnessing this continuous motion could drive artificial robotic muscles or generate enough electricity to power small electronics.
Read more: https://web.mit.edu/newsoffice/2013/new-material-harvests-energy-from-water-vapor-0110.html
