PDF Publication Title:
Text from PDF Page: 039
The heating demand curve is also obtained, in this case not considering an auxiliary heating system. Thus, the heating demand at the lowest possible outdoor temperature, -22 °C, corresponds to the maximum capacity of the heat pump considered, 10 kW. The heating demand, or partial load curve seen in Figure 3.7, is obtained for colder as in equation (3.28) (BSI, 2012): where Pdesignh is 10 kW (the capacity of the considered HP), and Tj every integer temperature value occurring during the heating season, i.e. from -22 °C to 16 °C. Partial load = j ∗ 𝑃 T − 16 −22−16 𝑑𝑒𝑠𝑖𝑔𝑛h (3.28) 600 500 400 300 200 100 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 hj_colder Heating demand profile 0 0.0 -22-20-18-16-14-12-10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 Outdoor temperature [°C] Figure 3.7. Temperature and heating demand profiles in colder climate scenario (BSI, 2012) The Standard also provides information on the requirements for secondary fluids’ temperatures. For ground source heat pump in colder climate, the data is as seen in Table 3.2. Table 3.2. Requirement for secondary fluid temperatures (BSI, 2012) T_water_out [°C] Outdoor T [°C] T_brine_in [°C] Floor heating [°C] Radiators [°C] -22 0 35 55 -7 0 30 44 2 0 27 37 7 0 25 32 12 0 24 28 Once the heating season was characterised along with the secondary fluid temperatures’ values, the SCOP can be calculated by equation (3.29) (BSI, 2012). -30- hours kWPDF Image | Next generation of refrigerants for residential heat pump systems
PDF Search Title:
Next generation of refrigerants for residential heat pump systemsOriginal File Name Searched:
MartinaLonghini_ThesisReport.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 (Standard Web Page)