Publication
High-speed turbocompressors for natural fluid heat-pumps: from integrated design to digital-twin.
Related publications (33)
EPFL's District Heating Heat Pump - Performance Analysis for DIfferent Working Fluids
The present case study is multi-criteria performance analysis of EPFL’s heat pump for different working fluids. The heat pump is based on a 2-stage vapour compression cycle which is modelled using the software Belsim VALI for 7 low-GWP refrigerants. The si ...
2021Potential and Challenges of ORC driven Heat Pumps Based on Gas Bearing Supported Turbomachinery
Electrically Driven Heat Pumps (EDHPs) have been identified as a key technology to reduce the energy consumption in the domestic space heating sector. However, since EDHPs require electrical power, they face issues related to network overload at peak-time, ...
EPFL2018High temperature heat pump using HFO and HCFO refrigerants – System design, simulation, and first experimental results
High temperature heat pumps (HTHPs) with heat sink temperatures in the range of 100 to 160°C are expected to become increasingly commercialized in the coming years. Major applications have been identified, particularly in the food, paper, metal and chemica ...
2018Optimal heat pump integration in industrial processes
François Maréchal, Ivan Daniel Kantor, Maziar Kermani, Anna Sophia Wallerand
Among the options for industrial waste heat recovery and reuse which are currently discussed, heat pumping receives far less attention than other technologies (e.g. organic rankine cycles). This, in particular, can be linked to a lack of comprehensive meth ...
2018High Temperature Heat Pumps: Market Overview, Stateof the Art, Research Status, Refrigerants, and Application Potentials
This study reviews the current state of the art of high temperature heat pumps (HTHPs) with heat sink temperatures of 90 to 160°C. The focus is on the analysis of heat pump cycles, suitable refrigerants, and the operating ranges of commercially available H ...
2018High temperature heat pumps: Market overview, state of the art, research status, refrigerants, and application potentials
This study reviews the current state of the art and the current research activities of high temperature heat pumps (HTHPs) with heat sink temperatures in the range of 90 to 160°C. The focus is on the analysis of the heat pump cycles and the suitable refrig ...
2018Heat Pump driven by a Small-Scale Oil-Free Turbocompressor – System Design and Simulation
Jürg Alexander Schiffmann, Adeel Javed
Small-scale oil-free turbocompressors driven by high-speed electric motors and supported on refrigerant vapor bearings represent a promising technology to increase the performance of domestic heat pumps. Gas bearings enable high rotational speeds with low ...
2017General Superstructure Synthesis and Bi-level Solution Strategy for Industrial Heat Pumping
François Maréchal, Ivan Daniel Kantor, Maziar Kermani, Anna Sophia Wallerand
Industrial waste heat is abundant and represents significant energy inefficiency for many processes. With increasing emphasis on improving industrial energy efficiency, heat pump systems (including refrigeration) offer a solution by valorizing low-temperat ...
Elsevier2017Two-Stage Heat Pump using Oil-Free Turbocompressors – System Design and Simulation
Jürg Alexander Schiffmann, Adeel Javed
The combination of multi-stage heat pump cycles with small-scale oil-free turbocompressor technology running on gas bearings could be a promising way to increase performance in domestic and commercial heat pumps. This paper presents a novel two-stage heat ...
2016Multi-Temperature Heat Pumps - A Literature Review
Reducing primary energy consumption by utilizing heat recovery systems has become increasingly important in industry. In many sectors, heating and cooling is required at different temperature levels at the same time. For this purpose, heat pumps are highly ...
2016