PDF Publication Title:
Text from PDF Page: 013
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 operating conditions and performance of the baseline R744 booster (B). Then the advantages of heat 32 54 55 56 57 58 59 60 61 62 63 64 65 value of 85 bar (0.8%) and slightly lower frequency values in the subcritical range between 37.7 and 55 bar. On the contrary, for climate 3, the frequency peak shifts from the subcritical value of 49 bar (17.6%), which is the minimum value for recovering heat for DHW, to the maximum value of 85 bar, which occurs for 13% of working hours. Thus, while in climate 1 the heat recovery from the refrigeration system covers all the heating demand without forcing the high stage pressure to values much higher than the optimal ones, in the Figure 3. Monthly cooling load on LT and MT evaporators of the refrigeration system for climate 2. 5. SYSTEM SIMULATION AND COMPARISON Various comparisons are made to investigate the feasibility and convenience of full heat supply by means of the R744 booster system with Heat Recovery (BHR). Firstly the effect of heat recovery is investigated on the recovery from the refrigeration system are assessed by comparison to a baseline solution where the 33 34 35 36 refrigeration system and by two air to water heat pumps respectively (DX+HPs). Finally, regarding the 37 refrigeration demand and thermal energy demand are independently supplied by two R404A direct expansion possibility of heat recovery from a refrigeration system other than a R744 booster, a R134a/R744 cascade system coupled with air to water heat pumps (C+HPs) has been considered. 38 39 40 41 42 43 44 45 46 47 frequency over the year of the high stage pressure pHS among the R744 transcritical booster system with 48 5.1. Comparison among the R744 booster systems without and with heat recovery (B vs. BHR) According to the control rules described above, in heat recovery mode the high stage pressure may be increased to meet the full heating demand of the supermarket. Figure 4 makes a comparison in terms of parallel compression (B) and the same system with heat recovery (BHR) for both the hottest (climate 1) and 49 50 51 52 heat recovery is quite close to the distribution for the basic booster, except for a small peak at the maximum 53 the coldest (climate 3) conditions considered. It may be noticed that, in climate 1, the high stage pressure inPDF Image | R744 BOOSTER INTEGRATED SYSTEM
PDF Search Title:
R744 BOOSTER INTEGRATED SYSTEMOriginal File Name Searched:
rj34_sub.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 |