Energy Saving Fair

Attendees, exhibitors & solutions

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Frequently asked

Glossary

1

Heat pump (Waermepumpe)

A heating system that moves ambient heat from air, ground or water into the building instead of burning fuel. At Energiesparmesse Wels, air-to-water and brine-to-water units are shown together with buffer tanks, controls and the low-temperature radiators or surface heating they need to run efficiently.

2

COP / seasonal performance factor

Coefficient of performance: how many units of heat a heat pump delivers per unit of electricity at a given moment. The seasonal figure averages a whole year and is the number to compare when exhibitors quote efficiency on the stand.

3

Photovoltaics (PV)

Solar panels that convert daylight into electricity. At the fair PV is presented with inverters, mounting systems, storage and consumption controllers, because the economics depend on how much of the production is used in the house.

4

Battery storage (Stromspeicher)

A home or small-commercial battery that shifts daytime PV output to the evening. Suppliers at Wels typically quote usable capacity in kWh, round-trip efficiency and backup-power capability.

5

U-value

The heat transfer coefficient of a building component, expressed in W/(m2K). Lower is better; windows, walls and roofs at the fair are labelled with U-values so visitors can compare insulation packages and glazing.

6

WDVS / thermal insulation composite system

A facade insulation system made of insulation boards, reinforcement and render fixed to the external wall. Common renovation offer at Energiesparmesse Wels, often combined with new windows and ventilation to avoid moisture problems.

7

Heating load and HWB (Heizwaermebedarf)

Heating load sizes the boiler or heat pump in kW; HWB is the annual space-heating demand per square metre used on Austrian energy certificates. Both come up when visitors bring house plans to the advice stands.

8

Energy performance certificate (Energieausweis)

The Austrian building energy certificate required for sale, rent and many subsidy applications. Advisory stands at the fair explain which renovation steps improve the rating fastest.

9

Subsidy / Foerderung

Regional and national grants for heating replacement, insulation and PV. Austrian funding schemes change regularly, so the fair is used to compare current federal, Upper Austrian and municipal programmes before committing to an installer.

10

Low-temperature heating

Radiators, underfloor or wall heating designed to run at low flow temperatures so a heat pump can work efficiently. A recurring comparison point when renovating older Austrian houses.

11

Ventilation with heat recovery

A mechanical ventilation unit that extracts stale air and pre-warms incoming fresh air. Promoted together with airtight insulation upgrades to control humidity and mould risk in refurbished homes.

12

Wallbox / sector coupling

A fixed AC charger for electric cars at home. At Wels wallboxes are shown alongside PV, storage and heat pumps, because a single energy management system is used to coordinate all three loads.

13

Pellet boiler and biomass

Automatic wood-pellet or wood-chip boilers used where a heat pump is not practical. Exhibitors quote boiler output, store size, fuel logistics and current emission limits.