A, B, C, D, E

Coefficients of equations

Latin symbols

COP

The coefficient of performance

The heat rejection in the condenser in (kW)

h_c,o

Specific enthalpy at compressor outlet in (kJ/kg)

Refrigeration capacity in (kW)

h_e,i

Specific Enthalpy entering the evaporator in (kJ/kg)

Mass flow rate in (kg/s)

h_e,o

Specific enthalpy leaving the evaporator in (kJ/kg)

The compressor power in (kW)

h_f

Saturated liquid enthalpy in (kJ/kg)

Subscripts

h_g

Saturated vapor enthalpy in (kJ/kg)

C

Condensing

h_s

Superheated enthalpy in (kJ/kg)

E

Evaporating

P

Pressure in (kPa)

F

Liquid

P_f

Saturated liquid pressure in (kPa)

G

Vapor

P_g

Saturated vapor pressure in (kPa)

I

Inlet

S_f

Saturated liquid entropy in (kJ/kg・K)

O

Outlet

S_g

Saturated vapor entropy in (kJ/kg・K)

Ref

Refrigeration

S_s

Superheated entropy in (kJ/kg・K)

Rej

Rejection

T

Temperature in (˚C)

S

Superheat

Tc

Condensing temperature in (˚C).

Te

Evaporating temperature in (˚C)

T_g

Saturated vapor temperature in (˚C)

V_g

Saturated vapor specific volume in (m³/kg)

V_s

Superheated specific volume in (m³/kg)