modelAbsSchottSopo

Information

It solves the 1D radial energy balance around the Heat Collector Element of a solar collector based on a correlation derived in F. Burkholder and C. Klutscher Heat loss Testing of Schott's 2008 PTR70 Parabolic Trough Receiver. Technical report. NREL May 2009

Modelling options

Geometry: It allows to choose between the Schott PTR70 receiver and the Sopogy micro receiver - Soponova (http://www.sopogy.com).

Parameters

Type	Name	Default	Description
Real	Sigma	Modelica.Constants.sigma	Stefan-Boltzmann constant
Real	gg	Modelica.Constants.g_n	Standard acceleration of gravity on earth
ThermoCycle.Components.HeatFlow.Walls.SolarAbsorber.Geometry.Schott_SopoNova.BaseGeometry	geometry
Integer	N	2	number of cells
Modelica.SIunits.Length	ll	geometry.L/(N - 1)	Length of each cell
General › Optical Properties
Real	eps6	1	Unaccounted losses in calculating collector optical efficiency

Connectors

Type	Name	Description
Modelica.Blocks.Interfaces.RealInput	v_wind
Modelica.Blocks.Interfaces.RealInput	Theta	In Radiants
Modelica.Blocks.Interfaces.RealInput	DNI
Modelica.Blocks.Interfaces.RealInput	Tamb
Interfaces.HeatTransfer.ThermalPort	wall_int

Components

Type	Name	Description
Modelica.SIunits.Temperature[N]	T_fluid	temperature of the fluid
Modelica.SIunits.HeatFlowRate	Q_tube_tot
Real[N]	HL	Heat losses per meter
Modelica.SIunits.HeatFlux[N]	Phi_tube_tot	Heat flux to the tube
Modelica.SIunits.HeatFlux[N]	Phi_conv_f	Heat flux to the fluid
Modelica.SIunits.HeatFlux[N]	Phi_loss_tube	Heat flux loss per tube surface
Modelica.SIunits.HeatFlux[N]	Phi_loss_ref	Heat flux loss per reflector surface
Modelica.SIunits.HeatFlux	Phi_loss_ref_m	Medium heat flux loss per reflector surface
Real	eta_opt
Real	eta_opt_t
Real	IAM	Incident Angle Modifier
Real[N]	eta_th	Thermal efficiency at each node
Real[N]	eta_TOT	Total efficiency : eta_th * eta_opt_t
Real	Eta_th	Average thermal efficiency
Real	Eta_TOT	Total Average efficiency