Abstracts
... The paper presents the mathematical analysis for the design of a new tennis ball launcher in order to assess the possibilities for its technical implementation. First, traditional launchers are described. Next, several new requirements improving training possibilities of such machines are suggested. ...
... The paper presents the mathematical analysis for the design of a new tennis ball launcher in order to assess the possibilities for its technical implementation. First, traditional launchers are described. Next, several new requirements improving training possibilities of such machines are suggested. ...
Electric Arc Furnace as Thermoenergetical Unit
... is equivalent to a change in what is called enthalpy. This thermodynamic parameter is widely applied in thermo-technical calculations. Enthalpy, like other kinds of energy, can be measured in Joules (J) or in kW-hours (kWh). As a Joule is a very small quantity (3600 kJ = 1 kWh), energy unit of kWh w ...
... is equivalent to a change in what is called enthalpy. This thermodynamic parameter is widely applied in thermo-technical calculations. Enthalpy, like other kinds of energy, can be measured in Joules (J) or in kW-hours (kWh). As a Joule is a very small quantity (3600 kJ = 1 kWh), energy unit of kWh w ...
Introduction to Thermochemistry and Specific Heat
... • The amount of heat required to convert one mole of the substance from one phase to another is its molar enthalpy of transition (DHfus, DHvap, DHsub). What is the sign for all three? +DH • The amount of heat given off for one mole of a substance during a phase transition while cooling is its molar ...
... • The amount of heat required to convert one mole of the substance from one phase to another is its molar enthalpy of transition (DHfus, DHvap, DHsub). What is the sign for all three? +DH • The amount of heat given off for one mole of a substance during a phase transition while cooling is its molar ...
PPT5
... plane wall with specified surface temperatures, the explicit finite difference equations for all the nodes are obtained from Eq. 5– 47. The coefficient of in the expression is 1-2. • The stability criterion for all nodes in this case is 1-20 or ...
... plane wall with specified surface temperatures, the explicit finite difference equations for all the nodes are obtained from Eq. 5– 47. The coefficient of in the expression is 1-2. • The stability criterion for all nodes in this case is 1-20 or ...
Response coefficients in thermodynamic systems
... partial derivatives involving the thermodynamic states of the system. Moreover, the understanding of the response coefficient meaning is of major importance in Physical Chemistry studies, and it leads to the idea that Thermodynamics can be applied to any system for which the relevant variables can b ...
... partial derivatives involving the thermodynamic states of the system. Moreover, the understanding of the response coefficient meaning is of major importance in Physical Chemistry studies, and it leads to the idea that Thermodynamics can be applied to any system for which the relevant variables can b ...
Thermal Convection vs. Thermal Conduction
... Although other effects are in play, chambers primarily rely on the blowers to move the mass of the air past the surface of the DUT (Device Under Test) to transfer heat as required. For more performance, more airflow is required. This improved performance can lead to some tradeoffs which ultimately ...
... Although other effects are in play, chambers primarily rely on the blowers to move the mass of the air past the surface of the DUT (Device Under Test) to transfer heat as required. For more performance, more airflow is required. This improved performance can lead to some tradeoffs which ultimately ...
1.1 Units of Measurement
... Many problems in chemistry require converting a quantity from one unit to another. To perform this conversion, you must use a conversion factor or series of conversion factors that relate two units. This method is called dimensional analysis. Any equality can be written in the form of a fraction cal ...
... Many problems in chemistry require converting a quantity from one unit to another. To perform this conversion, you must use a conversion factor or series of conversion factors that relate two units. This method is called dimensional analysis. Any equality can be written in the form of a fraction cal ...
Heat equation
The heat equation is a parabolic partial differential equation that describes the distribution of heat (or variation in temperature) in a given region over time.