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Labelpack A+ Project
Solar Device

Input

A design parameter of the solar device.
Mandatory if the data is to be saved.
A design parameter of the solar device
{Ncol > 1}
Number of the collector modules applied in the solar device.
Read value from the Solar Keymark datasheet of the collector.
{Asol > 0.1}
Either "aperture" (EN 12975-2) or "gross" (EN-ISO-9806) area of the tested collector module area.
Read value from the Solar Keymark datasheet of the collector.
{0.1 < Eo < 2.0}
Use efficiency parameters matching the Asol area definition (gross / aperture).
Read value from the Solar Keymark datasheet of the collector.
{0.1 < a1 < 50}
Use efficiency parameters matching the Asol area definition (gross / aperture).
Read value from the Solar Keymark datasheet of the collector.
{0.001 < a2 < 10}
Use efficiency parameters matching the Asol area definition (gross / aperture).
Read value from the Solar Keymark datasheet of the collector.
{0.1 < IAM < 2}
If Kθ(θT) and Kθ(θL) are equal, use value at 50°. If not, calculate the value as: Kθ(θT,at 40°) x Kθ(θL,at 40°)
Read value from tank product fiche or energy label.
{Vnom > 1}
Read from the tank design drawings.
{Vbu >= 0}
Volume of back-up heating part of the tank (volume above lowest part of the immerged back-up heat input device). In case of a pre-heater type solar device: Vbu=0
Read from product fiche or the energy label of the tank
{S > 1}
S = heat loss rate (EN 12977-3/4) times 45
A design parameter of the solar device
Read from the specifications of the pump
{solpmp >= 0}
For a controlled (continuous or steps) pump, value is 50% of nominal pump electricity consumption.
Read from the controller specifications.
{solsb >=0}
A design parameter of the solar device
Select the control type of the back-up heater (typical: Continuous).

Calculation

Total installed collector area
Calculation result to be added to the product fiche of the package.
Collector efficiency (at 40K and 1000 W/m2).
Calculation result to be added to the product fiche of the package.
Energy label class of the tank
Calculation result to be added to the product fiche of the package.
Auxiliary electricity consumption






Disclaimer
This online tool for calculating solar devices using the SOLCAL method is under development. It is available online as a test version in order to allow users to try it out and provide feedback about the tool to the Labelpack A+ consortium. This feedback can be sent by e-mail to info@solarheateurope.eu. The use of this calculation tool is free. Professionals using the tool are responsible for the use they make of the calculation provided or of the ‘fiche’ generated with this tool. General users must confirm the results of the calculation with professionals specialized in the installation of heating systems. This online tool has been developed in the framework of the Labelpack A+ project (GA 649905).

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