A Polygeneration Process Concept for Hybrid Solar and Biomass Power Plant

Appendix 1

Nomenclature

a	Solar altitude angle (degrees)
a1	First order heat loss coefficient (W/m2 - °C)
a2	Second order heat loss coefficient (W/m2 - °C2)
Aap	Aperture area of the parabolic trough collector field (m2)
C	Cost of the system (Rs)
Cfg	Specific heat of flue gas (kJ/kg - °C)
Cp	Specific heat (kJ/kg - °C)
DNI(G)	Monthly mean value of DNI based on ground measured data (kWh/m2)
DNI(S)	Monthly mean value of DNI based on satellite data (kWh/m2)
	Monthly and range wise mean DNI of each year (kWh/m2)
E	Energy (kW)
Ex,b	Exergy of biomass
Exi	Inlet exergy of the flowing stream
Exe	Exit exergy of the flowing stream
ExD,b	Exergy destruction of boiler
ExD,C	Exergy destruction of condenser
ExD,FWH	Exergy destruction of feed water heater
ExD,HE	Exergy destruction of heat exchanger
ExD,P	Exergy destruction of pump
ExD,T	Exergy destruction of turbine
g	Specific gravitational force (m/sec2)
h	Specific enthalpy (kJ/kg)
L	Local latitude (degrees)
Lboiler	Percentage heat losses in boiler (%)
LiBr	Lithium bromide
LC	Heat losses in condenser (kW)
Lp	Heat losses in pump (kW)
LPTC	Heat losses in PTC (kW)
LT	Heat losses in turbine (kW)
mfg	Mass of flue gas (kg/kg of fuel)
mb	Mass of biomass (kg/sec)
moil	Mass of oil (kg/sec)
mw	Mass of water (kg/sec)
n	Total number of range wise DNI data
Pv	Vapor pressure (kPa)
Pvs