Work package 2: State of the art HPD


T2.1: HPD literature study
To obtain an extensive market and application overview of available and applied industrial heat pump dryers with specifications, experiences, investment costs (if possible) an in depth literature study is to be performed with special attention to control strategies and adjustable HPs. In addition a patent research is needed to detect “hidden” information and to discover the eventual existence of patents-restrictions or status of their activities. Also information such as energy prices, CO2-policy, relevant investment support is to be listed up.
T2.2: HPD market study
To know the latest state of the art of research and outcome about HPD, even on component level, a market overview of HPD is to be composed. References will be listed up. Practical experience, especially the case studies will be described. Visits to manufacturers and/or installations will be needed.
T2.3: Literature and market study of adjustable heat pumps
In almost all heat pump applications, evaporating and condensing at variable temperatures will be favourable for the COP. Identifying adjustable heat pumps is therefore an objective.
T2.4: Literature study of control systems for HPD
This task will be especially directed to the heat pump control, taking the specific needs of a dryer into account.  Identification of different (online) control variables and control methods is needed.
T2.5: Literature study on the energy saving potential and environmental issues of HPD
To evaluate experience about environmental issues the energy saving potentials and the minimization of environmental risks based on previously conducted HPD research must be summarized. This study should not be limited to the represented participating branches of the consortium. Environmental issues found in literature should be added as well.
T2.6: Literature and market research on branch specific requirements and references of HPD
To obtain knowledge about specific branch oriented needs important input is needed from drying experts active in specific branches. The market research should be extended to other countries (including non-European). Contacting companies, research institutes or manufacturer companies is recommended.