DOI: 10.5281/zenodo.7669216
title: Research Data for System test results for the R290 systems

description: This dataset provides the research data system test results of R-290 (propane) systems. In the TRI-HP project, a new heat pump system with R-290 was integrated into multiple renewable energy sources. There were two experimental campaigns. After analysing the results of the first experimental campaign, the prototype was further improved. The second experimental campaign was conducted with the improved prototype. The detailed information can be found in ZENODO: Refined heat pump design and results of final testing Critical review of heat pump prototype operation and required modications Experimental results of dual source heat exchanger The background of this dataset: During the first experimental campaign, the heat pump prototypes were tested in the laboratories of the project<br> partners in static conditions. These conditions are defined in standards like, for example, EN 14511 [1], providing<br> specific temperatures on the evaporator and condenser sides. These tests enable us to characterize the COP and<br> EER in the nominal conditions of the equipment. However, when such heat pumps are installed in a real building<br> in a specific climate, they will be subject to varying conditions, depending on the load, the weather along<br> the seasons, intermediate storage vessels etc. For this reason, it is important also to carry out dynamic tests.<br> The dynamic tests presented in this deliverable were performed in two laboratories, following the principles of the<br> hardware-in-the-loop where part of the systems is installed in the lab (e.g. the heat pump), and part of the systems<br> is simulated and emulated to provide to real installed systems the response of the virtual element (e.g. building,<br> ground source, weather, solar thermal and PV). The full methodology and setups are described in detail in the<br> deliverable D7.1 [2].<br> The solar-ice system was tested in SPF-OST facilities in Rapperswil, Switzerland. The applied methodology was<br> the Concise Cycle Test (CCT), where 7 individual days along the year for the given climate of Bern were selected.<br> The complete system includes solar thermal, ice storage and water storage. The system was assembled in<br> the laboratory, and the actual setup is described in deliverable D7.3 [3]. The electrical part, including<br> household electricity, PV and the battery, will be tested for the CO2 slurry system due to time constraints since this<br> part does not affect the thermal behaviour of the installed system. The full efficiency of the propane solar-ice<br> slurry system, including the electrical part, will be provided in D7.9, "Demonstrated energetic performance and cost<br> competitiveness of systems".<br> The dual-source system was tested in the IREC laboratory SEILAB in Tarragona, Spain. The methodology is slightly<br> different since the selected periods are not individual days but a series of four consecutive days in<br> the summer and winter seasons. The overall system includes storage tanks, a geothermal loop as well as<br> Photovoltaics (PV) and an electrical battery. The assembled system and the lab setup were described in <br> deliverable D7.2 [4].<br> The present deliverable compiles the results of these two series of dynamic experiments with the propane heat<br> pumps. The results of the solar ice system are first analyzed in section 2, including a summary of the laboratory<br> setup and the control strategies used. The same structure is followed for the dual source system in section 3.<br> 2 Deliverable D7.4