A microhotplate array comprising four 100 μm × 100 μm unit cells has been designed. It has a multi-layer structure: Sithermal oxide-polySi-PECVD (plasma enhanced chemical vapour deposition) oxide-Sputtered Pt-Gas sensing film (SnO2). Electro-thermal simulation of the unit cell has been carried out using ANSYS. The simulations show that for an applied bias of 4 V a mean temperature of 706oC is o...

The small radiant heaters that burn hydrocarbon fuels propane, butane, methane/natural gas and liquid hydrocarbon fuels are used widely because of their simple design, their portability, and the ready availability of fuels. The open flame heater presents obvious disadvantages as follows. An upset heater is a grave fire risk where the surroundings are flammable and this restricts usage in, for e...

This article discusses the study of energy-saving technologies that have become a topical issue today. Types solar heating collectors, principles operation, and their constructive structure were studied. A new technology developed based on analyses proposed to dry agricultural products. Also, in current presentation, used context reduction issues been considered. Experimental experiments are al...

-The performance of catalysts in different forms was investigated for the design of a catalytic combustor with hydrogen fuel. The catalysts tested had dimensions of 150 x 150 mm, and consisted of a ceramic honeycomb impregnated with Pt, two Ni metal foams coated with Pd powder which differed from each other in pore size, and a ceramic foam coated with Co-Mn-Ag oxide powder. In the diffusive mod...

A dynamic model of the resistance heater in a thermal flying height control (TFC) slider of a hard disk drive is identified and used for dynamic flying height control. Experimental data obtained on a spin stand and the generalized realization algorithm are used for identification of a discrete-time dynamic model of the resistance heater (thermal actuator). The flying height change is measured u...

This article examines the issues of hydraulic resistance solar air heaters with concave tubes and reduction pressure losses, as well determination flow in installed working chamber heater discusses number common to reduce losses installation pipes give a swirling motion eliminate sharp decrease heat transfer process