Heat Transfer and Fluid Flow (Thermodynamics) Exam Questions with 100% Correct Answers

Explain the relationships between the four temperature scales: Fahrenhiet Celsius Rankine Kelvin - ANSWER-triple point of water; where the vapor, solid, and liquid phases exist together in thermodynamic equilibrium. 273.16 Kelvin or 491.69 degree Rankine. T(R)=1.8T(K) The Celsius scale is defined so that the temperature of the ice point (what we usually think of as the freezing point of water) is 0.00° C or 273.15 K and the steam point is 100.00° C or 373.15 K. The Fahrenheit scale assigns a value of 32° F to the ice point and 212° F to the steam point Freezing: 0.00 C or 273.15 K or 32 F Steam: 100.0 C or 373.15 K or 212 F Thermodynamics - ANSWER-Thermodynamics branch of science that deals with energy, the transformation of energy, and the associated changes in the state of matter. Working Substance - any fluid that receives, transports, and transfers energy in a system. Thermodynamic Properties - temperature, pressure, specific volume (density), internal energy, enthalpy, entropy. Phases of Substance - Solid, Liquid, Gas. A substance may exist in a combination of these phases such as solid-liquid or liquid-gas (vapor). At least two independent properties must be known in order to specify its phase of existence. Intensive Properties - independent of mass and therefore don't depend on the size of the sample being examined. Other examples are viscosity, electrical resistance, thermal conductivity, specific volume, pressure, and temperature. Extensive Properties - depend directly on the mass of the sample being examined. Examples are volume, mass, and energy.