Project Description

Manner wafers provide heat for Vienna

Manner has been feeding waste heat from the baking process into the local district heating network since 2016 as well as using it for heating and hot water. The connected load amounts to 1 MW. As such, 600 households and businesses in the immediate vicinity of the wafer production facility in Hernals and Ottakring benefit from the heat produced, meaning that 1,000 tonnes of CO2 can be saved every year. Manner also converts excess heat associated with the production process into cooling and uses this for refrigeration purposes.

0 MW
0 t CO2

Project details

The cooperation is a prime example of innovative district heating projects. Everyone benefits: the environment, Manner and Wien Energie. The wafer-produced heating shows how we can make efficient use of local heat sources close to our customers.

The hot exhaust air generated during the baking process is used here. It is collected via pipes and led to the roof via a fan, where a heat exchanger converts the hot exhaust air into hot water.

The primary source of waste heat is the ovens used in the wafer production. In addition to making changes to how production is structured, a 45 m3 storage tank was specially built to buffer the waste heat. Wien Energie has built an air separation heat exchanger and a pump station, and we have also connected the plant to the pipeline network.

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