Field trial system for the glass industry

Use of the waste heat from a glass melting tank

In December 2013, the third field trial system was commissioned at the natural gas fired glass foundry of Noelle & von Campe Glashütte GmbH.

The source of waste heat utilised by this field trial system supplies a constant heat level all year round, thus creating an environment for the ORC system that is ideal for producing large amounts of electricity and useful heat. The conditions on site allow for installation directly beside the waste heat source, allowing the plant to be connected into the existing system and thus to keep short the pipework distances required for flue gas, ethanol, and service water.

The distinguishing feature of this installation is that it is the first system to use our V12 steam expansion piston engine. Compared with its predecessor, this engine operates using four additional cylinders, providing the option to extend the engine's performance level from 100 kWel to more than 200 kWel.

Thanks to the improved quality of the flue gas, the installation can forgo the need to pre-heat the ethanol as well as other measures necessary to avoid acid dew points. However, in order to prevent damage to the heating circuit and evaporator, the heat exchanger was designed to cool the glass foundry’s hot waste gas from 370°C to a mere 190°C.

The ethanol vapour is condensed using a cooling circuit containing a water/glycol mixture with feed and return temperatures of 65°C and 45°C respectively. Noelle & von Campe Glashütte GmbH uses the thermal power extracted from the ethanol to operate a spatial heating system that was designed and installed especially for this purpose. This configuration helps cut down the consumption of fossil fuels for heating the factory in the winter.

Use of the waste heat from a glass melting tank

In December 2013, the third field trial system was commissioned at the natural gas fired glass foundry of Noelle & von Campe Glashütte GmbH.

The source of waste heat utilised by this field trial system supplies a constant heat level all year round, thus creating an environment for the ORC system that is ideal for producing large amounts of electricity and useful heat. The conditions on site allow for installation directly beside the waste heat source, allowing the plant to be connected into the existing system and thus to keep short the pipework distances required for flue gas, ethanol, and service water.

The distinguishing feature of this installation is that it is the first system to use our V12 steam expansion piston engine. Compared with its predecessor, this engine operates using four additional cylinders, providing the option to extend the engine's performance level from 100 kWel to more than 200 kWel.

Thanks to the improved quality of the flue gas, the installation can forgo the need to pre-heat the ethanol as well as other measures necessary to avoid acid dew points. However, in order to prevent damage to the heating circuit and evaporator, the heat exchanger was designed to cool the glass foundry’s hot waste gas from 370°C to a mere 190°C.

The ethanol vapour is condensed using a cooling circuit containing a water/glycol mixture with feed and return temperatures of 65°C and 45°C respectively. Noelle & von Campe Glashütte GmbH uses the thermal power extracted from the ethanol to operate a spatial heating system that was designed and installed especially for this purpose. This configuration helps cut down the consumption of fossil fuels for heating the factory in the winter.