What Does Capital Cp Stand For In Thermodynamics

Thermodynamic Efficiency.

  • OVERVIEW OF SOLAR CONCENTRATOR CONCEPTS
  • Conclusions

Also known as thermodynamic efficiency, is the maximum electrical energy available in the fuel, as calculated by the change in the Gibbs free energy divided by the change in enthalpy of the reaction. From: Encyclopedia of Electrochemical Power Sources, 2009Energy ConversionCan O. Colpan, . . . Mustafa Ercelik, in Comprehensive Energy Systems, 20184. 28. 2 Thermodynamics of Fuel CellThe first and second law of thermodynamics can be used to predict the maximum electrical work that can be obtained from a fuel cell. First, we can write the energy (Eq. ) and entropy (Eq. ) balances for an internally reversible process in differential form. δQ−δW=dU(19)δQ=TdSThe work term can be written as the summation of boundary work (pdV) and electrical work (δWel). If we eliminate δQ between Eqs. and (19) and replace δW with (pdV+δWel),(20)TdS−pdV−δWel=dUThe definitions of Gibbs function (G=H−TS) and enthalpy (H=U+PV) can be written in differential forms as shown in Eqs. and (22). dG=dH−TdS−SdT(22)dH=dU+pdV+VdpFor a process taking place at a specified temperature and pressure (dT=0 and dp=0), Eqs.


Video advice: Thermodynamics 0928

The second law of thermodynamics


Food Calorimetry: How to Measure Calories in Food

Help your students learn how to determine the calories in food with this hands-on lab activity. Using common, inexpensive materials, students construct a calorimeter and test several food samples to determine their energy content. Addresses selected National Science Education Standards for grades 9–12.

  1. Safety measures
  2. Calculations for each food sample

Video advice: Cp AND cv RELATIONSH

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People who check nutrition labels to make informed decisions about which foods to eat and which to avoid often base those decisions solely on the number of calories per serving. A calorie, like a joule, is a unit of energy. The International System of Units (SI) unit for energy is the joule; however, the calorie is commonly used for a unit of food energy. A calorie is equal to the amount of energy per unit mass required to raise the temperature of 1 g of water by 1° C. One calorie is the equivalent of 4. 18 joules. Food calories, as read off a nutrition label, are actually kilocalories (often denoted as “Calories” with a capital C). There are 1,000 calories in a kilocalorie, or food Calorie.


Video advice: Heat capacity at constant volume and pressure

Created by David SantoPietro.


[FAQ]

What does CP stand for in thermodynamics?

Specific heat capacity (cp) by LFA The specific heat capacity is a thermophysical property with the SI unit of Joules per kilogram and Kelvin (J kg-1 K-1). It defines a material's ability to store thermal energy.

What does CP stand for in energy?

From Wikipedia, the free encyclopedia. The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required.

What does CP mean in chemical engineering?

cp. specific heat at constant pressure, J/kg K.

What is CP in heat transfer?

The specific heat capacity Cp (kJ/kg/°C) is a thermodynamic property specific of the fluid used to transfer heat. ... The specific heat capacity of water does vary with temperature but for the scope of a hot water loop it is essentially constant.

How do you use CP in thermodynamics?

So, Cp and Cv is used according to the heat supplied. First of all Cp and Cv are defined only for gases. So we use them when dealing thermodynamic problems related to gases only (considering them ideal gases). Adiabatic index, ¥ = Cp/Cv.

Erwin van den Burg

Stress and anxiety researcher at CHUV2014–present
Ph.D. from Radboud University NijmegenGraduated 2002
Lives in Lausanne, Switzerland2013–present

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