Nanorrefrigerant Lab Report

Good Essays
Observation & Calculations for Nanorefrigerant
Graph of C.O.P. vs. Nanoparticle Concentration for Nanorefrigerant.
C.O.P RESULTS WHEN NANOPARTICLE MIXED IN R134A & POE OIL Figure 5.1. Graph of nanorefrigerant C.O.P vs. nanolubricant C.O.P.

5.2. GRAPH OF PERCENTAGE CHANGE IN THE COP OF THE SYSTEM Figure5.2. Graph of percentage C.O.P of nanorefrigerantvs. nanolubricant.
Here the result shows the percentage change in the C.O.P when the air conditioning test rig run on the nanorefrigerant and nanolubricant instead of conventional refrigerant and oil. Addition of nanoparticle in the compressor oil is showing the better result as compare to the nanorefrigerant. The maximum C.O.P is showing at 1.50% mass concentration i.e. 19.44% & 23.19 % for nanorefrigerants and nanolubricant respectfully.
…show more content…
• The nanoparticle with specific concentrations of 0.25%, 0.5%, 0.75%, 1%, 1.25% and 1.50%(by mass fraction) were added in R134a & POE oil of the compressor. The performance with the nanoparticles was then investigated using C.O.P. & energy consumption tests. The result shows that the maximum COP of system were improved by 19.44% for 1.25% mass fraction when the nanorefrigerantswas used instead oftraditional refrigerants and 23.29% for 1.50% mass fraction when the nanolubricant was used instead of conventional oil.
• The power consumption of the compressor reduces by 12.83% and the refrigerant effect is increased by 7.48 % when the nanolubricant is used instead of conventional POE oil. In the other hand addition of Sio2particle in the refrigerant is not much affected on the compressor work to give better energy saving results but the refrigerant effect is considerably increased by 19.19% for 1.50% mass

Related Documents

  • Decent Essays

    Copper Gta Welding

    • 1640 Words
    • 7 Pages

    Quasi-S phase region When the temperature continues to cool down from 1058 °C, the ductility of the welds increases. To illustrate, ductility at 1053 °C is 0.00298, which is higher than the corresponding ductility at 1058 °C. At 1058 °C, Δε during welding is 0.00483. The expansion velocity and susceptibility of hot cracking decrease as (Δε-P) decreases. The increase in ductility is related to the microstructure of the welds at a temperature below 1058 °C.…

    • 1640 Words
    • 7 Pages
    Decent Essays
  • Decent Essays

    The combustion and emissions performance of ABE29.5W0.5, ABE30 and ABE0 (pure gasoline) were investigated. The test reported that ABE29.5W0.5 enhanced engine torque by 9.6%-12.7% and BTE by 5.2%-11.6% compared to pure gasoline, respectively. ABE29.5W0.5 also presented similar BSFC relative to pure gasoline. According to the MFB calculation, ABE29.5W0.5 presented a longer ignition delay and combustion duration, which meant that ABE29.5W0.5 had a lower combustion rate con-sequence of the reduced combustion temperature reduction due to water addition. Addition-ally, ABE29.5W0.5 produced a lower NOx and CO and also increased UHC, but showed de-creased NOx and CO emissions compared to ABE30 and pure gasoline.…

    • 921 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    React. Inorganic, Met. Nano-Metal Chem. 42, 1369–1374 (2012) 9. Shon YS, Cutler E (2004) Aqueous synthesis of alkane thiolatedprotected Ag nanoparticles using Bunte salts.…

    • 899 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Catal., 84, 1994. solid-state reaction They researched two methods to prove catalytic activity (solid-state reaction and incipient wetness method) the results show the KNiCa/ZSI catalyst was produced by incipient wetness method gave much less activity than the one prepared by solid-state. That could be melting effect of metallic precursor mixtures. 6.2. Metal activity Table 2 illustrates some experimental results that related to reforming methane with CO2 over group VIII…

    • 1143 Words
    • 5 Pages
    Decent Essays
  • Decent Essays

    The initiation temperature of this endothermic reaction with conventional micron sized SiC powder is usually carried out at relatively high temperature (500 ◦C or 600◦C) [22, 23]. The low temperature of 252.5 ◦C observed in the present study is attributed to application of hot extrusion. The die pressure of extrusion enhanced the overall kinetic conditions and reaction rate of the in-situ reaction process at low temperature. Representative SEM micrographs of the composite with 3wt. % C prepared by compact and hot extrusion held at 500 ◦C are illustrated in Fig.…

    • 1788 Words
    • 8 Pages
    Decent Essays
  • Decent Essays

    Heat transfer from the wire would be reduced by reducing the resistance of the wires which was discussed previously so the same techniques would work (increasing resistivity and thickness of wire). It is important to reduce these uncertainties in V, t, I and R as they affect the uncertainty of the gradient of the graph in figure 3 and therefore, the measurement of the latent heat of vaporisation. Conclusion The aim of this experiment was to determine the latent heat of vaporisation of nitrogen. This was done by heating liquid nitrogen with a resistor and relating the power transfer to the latent heat of vaporisation. The experiment yielded a value of 188 ± 22 kJkg¯¹.…

    • 2122 Words
    • 9 Pages
    Decent Essays
  • Decent Essays

    The kinetics model is able to predict the rate of each of the reactions and the temperature variations along the length of the gasifier. (Wang and Kinoshita) modelled the biomass gasification considering kinetics of the surface reactions and assumed the initial concentrations of before char reduction to be equal to zero. The gasifier was divided into Flaming Pyrolysis, Char Reduction and inert char zones. In the Char reduction zone the reaction rate is much greater than in the flaming pyrolysis zone. The temperature of the reduction zone is around and hence no equilibrium is achieved in the reduction zone.…

    • 905 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Si3n4 Synthesis

    • 806 Words
    • 4 Pages

    The nucleation of nanowires from the reaction between SiO and N2 occurs on the surface of a-Si3N4 powder, which is covered by a thin layer of SiO2, and the nanowires grow from the re-arrangement of Si and N atoms of the a-Si3N4 powder. The reduction of SiO2 to SiO…

    • 806 Words
    • 4 Pages
    Decent Essays
  • Decent Essays

    Abstract This lab report focuses on the two experiments on pressure systems conducted, the Marcet boiler and Boyle’s law. The aim of this lab is to investigate in pressure-temperature relationship, Boyle’s law, as well as steam quality. The results of this experiment support both relationship, as well as successfully providing a value for steam quality. For the Marcet boiler experiment, it was found that the higher the system pressure, the higher the saturated temperature. For the Boyle’s law experiment, it was found that pressure is directly proportional to volume, despite using non-ideal gas for the experiment.…

    • 1196 Words
    • 5 Pages
    Decent Essays
  • Decent Essays

    Al, Alloy 1 And Elece

    • 1504 Words
    • 7 Pages

    This oxide film is Al2O3 and Al(OH)3, in neutral solution, based on Pourbaix diagram [20]. The alloy 1 presents OCP value of about -1.30 V whereas that of Alloy 2 was -1.44 V, which are more negative than that of Al in the same medium. The presence of tin and gallium in aluminum matrix as alloying elements increases the adsorption of Cl- ions at the values of negative potential which leads to the alloy dissolution [10]. The surface morphologies of Al, Alloy 1 and Alloy 2 after immersion in 2 M NaCl solution for 1 h were obtained by scanning electron microscopy (SEM) (Fig. 3).…

    • 1504 Words
    • 7 Pages
    Decent Essays