- #1

- 34

- 0

η = f(θ

_{H},θ

_{C}) = 1 - (Q

_{C}/Q

_{H})

(Q

_{C}/Q

_{H}) = 1 - f(θ

_{H},θ

_{C})

(Q

_{C}/Q

_{H}) = Ψ(θ

_{H},θ

_{C})

The simplest function that can be used is T

_{1}/T

_{2}

(Q

_{C}/Q

_{H}) = T

_{1}/T

_{2}

In order to define the Kelvin scale we assign a value to one of the temperatures and that is the triple point of water, 273.16K. Thus any other temperature is defined as

T = 273.16(Q/Q

_{tp})

My question is, why was the triple point of water used in this equation and can we use any other temperature?

How does this relate to the definition of Kelvin:"

*The kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water"*

If we use another function, say (T

_{1})

^{2}/(T

_{2})

^{3}, can we stilldefine the Kelvin scale?

In practice, is this equation useful? We could just measure the temperature using a sensor instead of finding the heat transfer at both reservoirs before calculating the temperature.