PDF Publication Title:
Text from PDF Page: 014
Energies 2022, 15, 1008 14 of 16 Figure 12. DHW TES tank temperature on 24 of August 2019. Figure 13. Heat transfer rate from the DHW TES tank to the DHW delivered to the house on 24 of Figure 13. Heat transfer rate from the DHW TES tank to the DHW delivered to the house on 24 of August 2019. August 2019. The discharge of the thermal energy to the DHW is presented in Figure 13. The process 5. Conclusions was characterized by a large heat transfer rate that decreased as the process progressed. TES tank. In this work, performance evaluation results for the TESSe2b system when it was The initial high value of the heating rate was due to the high temperature inside the DHW applied in a residential building in a Mediterranean climate were presented and dis- cussed. The typical conclusions are as follows: The TESSe2b storage system resulted in occupying several times less space than a 5. Conclusions similar system with water as a storage medium instead of PCM. Furthermore, with a cal- In this work, performance evaluation results for the TESSe2b system when it was culated payback time of about 9.8 years, and taking into account the significant cost re- applied in a residential building in a Mediterranean climate were presented and discussed. duction during a commercialization phase, the TESSe2b solution became financially at- The typical conclusions are as follows: tractive. The TESSe2b storage system resulted in occupying several times less space than a The system had an equivalent primary energy for heating, cooling and DHW equal similar system with water as a storage medium instead of PCM. Furthermore, with a calcu- to 8397.7 kWh. For comparison, the same value for a conventional system was calculated lated payback time of about 9.8 years, and taking into account the significant cost reduction to be 43,335.0 kWh. For the summer months, the GSHP had an SPF1 ranging from 5.77 in during a commercialization phase, the TESSe2b solution became financially attractive. June to 5.03 in August. The addition of the electrical consumption of the boreholes (SPF2) The system had an equivalent primary energy for heating, cooling and DHW equal to reduced the factor slightly (from 5.67 to 4.96). Including all devices, the factor (SPF4) re- 8397.7 kWh. For comparison, the same value for a conventional system was calculated to be duced to 3.80–3.64. 43,335.0 kWh. For the summer months, the GSHP had an SPF1 ranging from 5.77 in June to 5.03 in August. The addition of the electrical consumption of the boreholes (SPF2) reduced the factor slightly (from 5.67 to 4.96). Including all devices, the factor (SPF4) reduced to 3.80–3.64. According to the data collected during the operation of the system, the solar contribu- tion for heating and DHW yielded a solar fraction of 42.3%. The significance of the energy storage was highlighted by the 44.8% shift in the heating needs from day to night and by the 30.3% shift in the cooling needs. Shifting the cooling needs to low electricity tariff hours was a beneficial aspect of the system. Moreover, the average heat transfer rate resulted in being as high as 13.5 kW for heating and 31.5 kW for cooling. The DHW that the system could deliver was between 40 and 50 ◦C. Considering the stored energy, 21.9 kWh were measured in the space heating tanks, while 14.5 kWh in the cooling tanks and 6.2 kWh in the DHW tank were found. Regarding the software predictions, the default outside temperature data of the soft- ware were in good agreement with those provided by the weather station installed in the building. The cooling thermal power delivered to the building had less fluctuations and with a higher frequency than those predicted by the software. However, the real total energy delivered and the computed value had only a 5.1% difference. Furthermore, the solar irradiation calculated by the software and that measured by the weather station were in perfect agreement almost every day. Finally, for a hot summer day when the solar collectors provided energy only to the DHW tank, the temperature measured inside the tank showed that the PCM managed to fully melt in the day, and thus the DHW tank was fully charged. During discharging, high rates of heat transfer were measured (abovePDF Image | Latent Thermal Energy Storage Application
PDF Search Title:
Latent Thermal Energy Storage ApplicationOriginal File Name Searched:
energies-15-01008-v2.pdfDIY PDF Search: Google It | Yahoo | Bing
Turbine and System Plans CAD CAM: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. More Info
Waste Heat Power Technology: Organic Rankine Cycle uses waste heat to make electricity, shaft horsepower and cooling. More Info
All Turbine and System Products: Infinity Turbine ORD systems, turbine generator sets, build plans and more to use your waste heat from 30C to 100C. More Info
CO2 Phase Change Demonstrator: CO2 goes supercritical at 30 C. This is a experimental platform which you can use to demonstrate phase change with low heat. Includes integration area for small CO2 turbine, static generator, and more. This can also be used for a GTL Gas to Liquids experimental platform. More Info
Introducing the Infinity Turbine Products Infinity Turbine develops and builds systems for making power from waste heat. It also is working on innovative strategies for storing, making, and deploying energy. More Info
Need Strategy? Use our Consulting and analyst services Infinity Turbine LLC is pleased to announce its consulting and analyst services. We have worked in the renewable energy industry as a researcher, developing sales and markets, along with may inventions and innovations. More Info
Made in USA with Global Energy Millennial Web Engine These pages were made with the Global Energy Web PDF Engine using Filemaker (Claris) software.
Sand Battery Sand and Paraffin for TES Thermo Energy Storage More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |