Greenbyte Documentation

Potential Power Ambient Temperature

Calculates potential power based on the average ambient temperature of all pyranometers on the same site.

Technology

Solar: Inverter

Equation
potential_power_ambient_temp_eq.jpg

where:

Pp

is Potential Power Ambient Temperature

Ic

is the solar irradiance with applied cut-in

C

is the capacity of the device (inverter metadata)

K

is the power temperature coefficient (site metadata)

T0

is the nominal operating cell temperature at ideal conditions (inverter metadata)

Ta

is the average ambient temperature of reference pyranometers

Tnoct

is the nocturnal air temperature constant (20°C)

Inoct

is the nocturnal irradiance constant (800W/m2)

I

is solar irradiance reference

Cut-inIA

is the irradiance cut-in for availability (inverter metadata: Irradiance cut-In)

degrade

is the function applying the degradation factor (site metadata: Degradation factor) and commissioning date (inverter metadata)

Inputs
potential_power_ambient_temp_in.jpg
Example

In this example, the Potential Power Ambient Temperature is compared with the Potential Power Irradiance Only. As you can see, the Potential Power Ambient Temperature is slightly higher during the colder part of the day and slightly lower during the warmer part of the day.

potential_power_ambient_temp_ex.png