ZEMCH 2015 - International Conference Proceedings | Page 698
Nomenclatures
[-]
Solar Collector Efficiency
[-]
Intercept (maximum) of the collector efficiency
[kJ/h*m²*K]
Slope of the efficiency curve
[kJ/h*m²*K²]
Curvature of the efficiency curve
Radiation [kJ/h*m²]
Global radiation incident on the solar collector
Tin [°C]
Inlet temperature of fluid to collector
Tenv [°C]
Ambient (air) temperature
[kJ/h]
The rate at which energy was removed from the chilled water flow stream
[kg/h]
Chilled water flow rate
[kJ/kg*K]
Specific heat of the chilled water stream fluid
[°C]
Temperature of fluid entering the chilled water stream
[°C]
Chilled water stream set point
[0..1]
Fraction of design load at which the machine is required to operate
[kJ/hr]
Rated cooling capacity of the device
[kJ/hr]
Mass flow rate of air entering the “fresh air” side of the device
[0..1]
Fraction of the device’s full load capacity during operation under current conditions
[0..1]
Fraction of the device’s nominal capacity during operation under current conditions
[kJ/hr]
Energy removed from the hot water stream
[-]
Rated Coefficient of Performance
[0..1]
Fraction of design energy Input currently required
[°C]
Temperature of fluid exiting the hot water stream
[°C]
Temperature of fluid entering the hot water stream
[kg/hr]
Mass flow rate of the hot water stream fluid
[kJ/kg*K]
Specific heat of the “hot water” stream fluid
[°C]
Temperature of fluid exiting the chilled water stream
[°C]
Temperature of fluid entering the chilled water stream
[kg/hr]
Mass flow rate of the chilled water stream fluid
[kJ/kg*K]
Specific heat of the chilled water stream fluid
[kJ/hr]
Energy draw of parasitics
[°C]
Temperature of fluid exiting the cooling water stream
[°C]
Temperature of fluid entering the cooling water stream
T_Coll [°C]
Working fluid solar collector temperature
T_TANKout [°C]
Hot storage tank temperature
T_HXout [°C]
Temperature of the fluid stream exiting the auxiliary heater
T_FLUIDFANout [°C]
Fan coil outlet fluid stream temperature
T_AIRFANout [°C]
Fan coil outlet air stream temperature
T_BUILD [°C]
Building temperature after conditioning
CONDSignal [-]
Conditioning signal
Hot_P [kW]
Chiller’s generator required power
Boil_P [kW]
Auxiliary heater supplied power
Tank_P [kW]
Hot storage fluid stream supplied power
Coll_P [kW]
Collector fluid stream supplied power
Tank_En [kWh]
Hot storage fluid stream supplied energy
Boil_En [kWh]
Auxiliary heater supplied energy
Hot_En [kWh]
Chiller’s generator required energy
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ZEMCH 2015 | International Conference | Bari - Lecce, Italy