Refrigeration accounts for as much as 50%-70% of winery electricity consumption. Electricity costs are rising and there is considerable interest in decreasing refrigeration-related electricity use and/or costs. The Grape and Wine Research and Development Corporation (GWRDC) funded a project by the Commercial Services group at the Australian Wine Research Institute (AWRI) to investigate how Australian wineries can improve refrigeration efficiency.
A short reference guide produced by the project can be downloaded below. This includes an overview of winery refrigeration and improvement opportunities.
Case studies investigating selected topics in more detail were performed at two wineries (Winery A and Winery B) during 2011. Three technical reports on this work are available for download below. The topics considered in each report are listed.
- Warmer brine temperatures
- Cooling system operation and control systems
- Cooling system maintenance
- Plant shutdown/infrequent running
- External heat exchangers
- Warmer white fermentation temperatures
- Tank stratification
- Storage temperatures
- Night-time cooling