SYMBOL  DESCRIPTION  VALUE  units 
${C}_{P,HTF}$  Specific heat, heat transfer fluid  4.186  J/(g・˚C) 
${C}_{P,WF}$  Specific heat, working fluid  1.330  J/(g・˚C) 
DNI_{min}_{ }  Minimum radiation for system startup  350  W/m^{2} 
Lat  Latitude  30˚13'27''N 

${D}_{5}$  Outside diameter of HCE glass envelope  0.125  m 
${\epsilon}_{5}$  Emissivity of outer surface of glass envelope  0.093 

${\alpha}_{ABS}$  Absorptivity of HCE selective coating  0.955 

${\eta}_{ENV}$  Effective optical efficiency of HCE envelope  0.67 

${\alpha}_{ENV}$  Absorptivity of HCE glass envelope  0.20 

A  Reflective area of one SCA  525  m^{2} 
L  Length of one HCE receiver section  6  m 
${T}_{5,ST}$  Glass envelope outer surface initial temperature  96.3  C 
${K}_{56}$  Thermal conductance of air at T_{56}  0.6969  W/(m・K) 
${\alpha}_{56}$  Thermal diffusivity of air at T_{56}  0.00002207  m^{2}/s 
${\nu}_{56,ST}$  Kinematic viscosity of air at T_{56}  0.000001568  m^{2}/s 
${T}_{5}$  Initial HTF temperature entering solar panel  28  ˚C 
${T}_{4}$  Initial WF temperature entering boiler  18  ˚C 
${T}_{9}$  Initial cooling water temperature entering condenser  23.11  ˚C^{ } 
${\eta}_{B}$  Thermal efficiency of boiler  0.85 

${\eta}_{turb}$  Thermal efficiency of turbine/expander  0.75 

${\eta}_{cond}$  Thermal efficiency of condenser  0.60 

${\eta}_{pump}$  Isentropic efficiency of pump  0.60 

${\eta}_{gen}$  Electric efficiency of generator  0.91 

${\eta}_{CT}$  Thermal efficiency of cooling tower  0.75 

$\dot{m}$  Mass flow rate of condensing loop  12.6  kg/s 
$\dot{m}$  Mass flow rate of HTF  6.14  kg/s 
$\dot{m}$  Initial mass flow rate of WF  0.859  kg/s 
${P}_{low}$  Low pressure point of WF  0.142  MPa 
${P}_{high}$  High pressure point of WF  0.716  MPa 
$\sigma $  StefanBoltzmann constant  5.67037 × 10^{−}^{08}  W/(m^{2}・K^{4}) 