Abstract
The project "hyBit - hydrogen for Bremen's industrial information" is investigating the hydrogen transformation of Bremen's industry. One aspect of the project is the future application of thermal refrigeration machines in Bremen's district heating network. In AP 4.1.3 "Kaeltebereitstellung" the goal was formulated to investigate the potential for refrigeration generation from additional industrial waste heat or district heating from a technical and economic perspective. For this purpose, a Python model was created to map the refrigeration machines using zero-order models. The use of zero-order models significantly reduces the number of parameters required, while the accuracy for the individual machine is sufficient for the overall result, which is obtained by summing many individual cases. The model is easy to use and can be made available to the public. It is also possible to use data from other models, such as WEnDI, to adapt the prediction to a specific (type of) building. Direct coupling with the energy data from WEnDI would provide a simultaneous statement of suitability for a large number of building types.
Technical Information
The Python script contains the model developed for a quick evaluation of the suitability of thermal refrigeration machines in a given application. In addition, an economic comparison with a compression refrigeration machine is made using static investment cost calculation.
A detailed explanation can be found in the project documentation 10.24406/publica-7404. For a specific application, the parameters of the machines must be adjusted to reflect the real machines being compared.
PLEASE NOTE: Weather data is used to calculate cooling hours. The weather data provided applies to BREMEN, Germany. Weather data for other locations in Germany can be found here: [https://opendata.dwd.de/climate_environment/CDC/observations_germany/climate/hourly/air_temperature/] .