Cogeneration space heater

Cogeneration space heater’ means a space heater simultaneously generating heat and electricity in a single process

Cogeneration space heater

Rated heat output (Prated) of cogeneration space heater (in kW)

The ‘rated heat output’ means the declared heat output of the heater when providing sapce heating at standard rating conditions, expressed in kW. It can be found in the product label (box on the bottom right-side), expressed in kW. It can also be found in the 'product fiche', usually indicated as 'Prated'.

Seasonal space heating energy efficiency of cogeneration space heater (in %)

The 'seasonal space heating energy efficiency’ means the ratio between the space heating demand for a designated heating season, supplied by a space heater, and the annual energy consumption required to meet this demand, expressed in %. It can also be identified as (ηs) and it can be found in the 'product fiche'.

Temperature control

The 'temperature control’ means the equipment that interfaces with the end-user regarding the values and timing of the desired indoor temperature, and communicates relevant data to an interface of the heater such as a central processing unit, thus helping to regulate the indoor temperature(s).

Temperature control

Temperature Control (Class)

The temperature controls can be classified differently depending on their functioning, from a class I for the more simple “On/off“ room thermostat up to a class VIII for Multi-sensor room temperature controls, for use with modulating heaters. More details regardng the different classes can be found here [link].

Supplementary boiler

A ‘supplementary heater’ means a non-preferential heater that generates heat in cases where the heat demand is greater than the rated heat output of the preferential heater. In this case, the supplementary heater would be a second boiler. A ‘boiler space heater’ is a space heater that generates heat using the combustion of fossil fuels (gas, oil) and/or biomass fuels, and/or using the Joule effect in electric resistance heating elements.

Supplementary boiler

Rated heat output (Prated) of the supplementary boiler (in kW)

The ‘rated heat output of supplementary heater’ means the declared heat output of the supplementary heater when providing space heating at standard rating conditions, expressed in kW. It can also be found in the 'product fiche', usually indicated as 'Psup'.

Seasonal space heating energy efficiency of supplementary boiler (in %)

Same explanation as for the the ‘Seasonal space heating energy efficiency of boiler', used above. In this case it refers to the suplementary (or secondary) boiler.

Solar device

A ‘solar device’ means a solar-only system, a solar collector, a solar hot water storage tank or a pump in the collector loop, which are placed on the market separately

Solar device

Solar collector area (in m2)

The information about the area of a solar thermal collector can be found in the 'product fiche'. It is indicated in m² (square metres). To reach the total collector area, the collector area (per unit) should be multiplied by the total number of collectors installed (collector area (m² per unit) * no. of collectors).

Solar collector efficiency (in %)

The solar collector efficiency should be indicted in the 'product fiche'. Alternatively, it can be found in test results of the solar collector that can be found as annexes to the Solar Keymark certificates.

Heat storage tank

A ‘hot water storage tank’ is a vessel for storing hot water for space heating purposes, including any additives, which is not equipped with any heat generator except possibly one or more back-up immersion heaters.

Heat storage tank

Volume of the heat storage tank (in l)

The size of the hot water storage tanks is indicated in terms of volume (litres). This information can be found in the product label (information box at the bottom of the label) or in the product fiche.

Tank label class

The energy label class of the hot water storage tanks ranges from G to A. This information can be found in the product label or in the product fiche.

Calculate / pdf

The option «Calculate» allows access to the preliminary version of the label, allowing still editing and changes of the inserted data. The option «PDF» redirects to a new web page where the user must enter the product information that will be shown on the label: make and models of the system components & system supplier.

Calculating Package Efficiency and Class

Cogeneration space heater