Induction heating computer simulation is a powerful tool for process design and optimization, induction coil design, equipment selection, as well as education and business presentations. The authors share their vast experience in the practical use of computer simulation for different induction heating and heat treating processes. A comparison of simulation versus the experimental “trial and err...

As solar heating systems become a commercial reality, greater efforts are now being employed to incorporate solar cooling components in order to obtain a complete solar heating and cooling system, and thus take advantage of the cost-effectiveness of year-round use of the solar equipment. The solar heating and cooling system design presented in this paper incorporates design considerations which...

Stickiness is the physical process of contaminated lint adhering to equipment. The degree of stickiness depends on chemical identity, quantity, and distribution of the sugars. The sugar in cotton fibers may be insect or plant derived. There are several methods for measuring cotton fibers stickiness. In this work, a colorimetric method was used for the measurements. In the method, honeydew was c...

physiologically thermal comfort condition is a limit of temperature and humidity. ,in which thermal control mechanism of human body is in its least activity . thermal comfort conditions not only have impact on sizes of heating and cooling equipment ,but also affects the thickness of insulation, and .energy, consumption of buildings. it is necessary to define thermal comfort condition for differ...

High-voltage positive temperature coefficient (PTC) heaters have a high heating capacity and are fast acting; thus, they function as the actual main heating equipment in electric cars, and considerable research is devoted to improving their heating performance and efficiency. We evaluated the heating performance of a high-voltage PTC heater for an electric car by building a closed-loop-type tes...

At any point in the life of a building, mechanical and electrical equipment – the services infrastructure – may be poorly operated. Equipment may be inadvertently left in operation when not needed: lights and fans running all night or air conditioning in unoccupied spaces. Or equipment may be operated in ignorance of the cost, a problem exacerbated by time-varying electrical rates. Further, as ...

Cycles for heating and cooling have been studied in detail when it comes to thermodynamics and design. However, there are few publications on optimal operation with given equipment which is the theme of this paper. One important issue is which variable to control during operation, for example super-heating, pressure, liquid level or valve set-point. Unlike open systems the initial charge to the...