PDF Publication Title:
Text from PDF Page: 003
Energies 2020, 13, 5654 3 of 18 an air-source heat pump and a ground-source heat pump showing that, for the case study in Cyprus, the air source HP is highly competitive, while Li et al. [26] theoretically demonstrated the general exergy convenience of GSHPs compared to air-source heat pumps. In this work, the monitored data of a novel partial cascade GSHP are presented. Indeed, the heat pump project is currently involved in a patenting process (Patent application number: 102020000021097, presented on 7th September 2020). The heat pump configuration includes an ejector and two gas-coolers in series in the low-temperature cycle, where CO2 is used as the refrigerant in a transcritical cycle. The high-temperature-stage fluid is the refrigerant R1234ze. This last cycle is not properly the high-temperature one, as the analyzed layout of the heat pump is different from a common cascade cycle as described in the following section of the text. 2. Materials and Methods The present paper provides the description and the energy analysis of a heat pump prototype, which uses low-GWP fluids as refrigerants. Moreover, the heat pump has been developed to supply the high-temperature heat carrier fluid to the terminal units used for heating a real building in Zagreb (Croatia). The first part of the paper summarizes the main information about the case study and the details of the heat pump from the mechanical and thermodynamic points of view. In the second part of the work, the results of the operating conditions of the heat pump are described and discussed. The energy analysis has been carried out using the measured data obtained from the monitoring system installed in the plant. 2.1. The Building The ground-source heat pump has been installed in the building that hosts the Technical Museum Nikola Tesla in Zagreb. The entire complex is listed within the National Register of Cultural Property. The building area is located in the historic city center, which is protected by a special regime of conservation and heritage protection. The building complex is enlisted within the National Register of Cultural Property, by the decision of the Ministry of Culture of the Republic of Croatia in 2005, and it is located in the historic urban areas of the city of Zagreb. The national law on the Protection and Conservation of Cultural Goods forces any structural work planned for the museum to be greenlit by the Urban Office for the Protection of Cultural and Natural Monuments. A limited part of the museum was renovated, which was an exhibition room of 380 m2 with a volume equal to 1463 m3, as shown in Energies 2020, 13, x FOR PEER REVIEW 4 of 17 Figure 1. Figure 1. Plan of the exhibition room (ZONE A) of the Technical Museum Nikola Tesla in Figure 1. Plan of the exhibition room (ZONE A) of the Technical Museum Nikola Tesla in Zagreb Zagreb (Croatia). Source: [27]. (Croatia). Source: [27]. 2.2. The Thermal Power Plant The reversible heat pump is a water-to-water machine that uses a geothermal field as the source and sink in heating and cooling operation, respectively. It consists of two cycles: The low-temperature cycle uses the natural fluid CO2 as the refrigerant, and the high-temperature cycle uses thePDF Image | Novel Ground-Source Heat Pump with R744
PDF Search Title:
Novel Ground-Source Heat Pump with R744Original File Name Searched:
energies-13-05654.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |