Experimental analysis of magnetic field effects on compressor energy saving cooling system

A research on different refrigerants with and without influence of the magnetic field is provided in this paper. The magnetic field degree viz is four gauss. The condenser exit row was 3000, 6000, 9000 and 12000 gauss. Magnetic fields at condenser exit lines are found to reduce the consumption of the compressor energy. Through applying magnet fields on R134a, compressor energy savings was observed up to 1.35%, 6.23%, 5.40% and 4.19%, respectively, in gauss levels of 3000, 6000, 9000 and 12000, while R152a savings in energy levels were up 13.10%, 15.59% and 25.86% and R407a saving in power up to 7.3%, 9.19%, 13.05% and 12.40%. The coolant R152a saves energy in contrast to other coolant compressors. As the magnetic field strength increases, a vapor refrigeration system decreases the energy consumption of the compressor.


Intoduction
Magnetic field effects on refrigerants are determined by its chemical composition and physical thermal properties such as viscosity, surface tension, thermal conductivity and heat. The highest measurable heat and thermal conductivity of coolants responds little and vice versa to the magnetic field. (Samuel M. Sami, R.J. Kita, 2005). The magnetic effect on the condensing outlet tube increases the cooling effect and reduces the compressor power. The compressor needs more power to remove liquid coolant from the compressor due to incomplete coolant evaporation. When the condenser has been magnetically applied, its cooling properties are modified and the evaporation frequency of liquid coolant is increased. The liquid coolant boiling in the compressor can therefore be reduced. (A Kotb, H.E.Saad2014). The magnetic field effects are studied and its effect on vapor compression systems performance is analyzed in some modern refrigerant mixtures. (Samuel M. Sami, Shawn Aucoin, 2003). The impact of magnetic field on cooling mix R290 and R600a shows that magnetic field reduces energy cons-umption of the compressor and is dependent on strength of the magnetic field. The growing magnetic strength reduces compressor power and increases COP.

Apparatus and Procedure
Figure1 demonstrates the experimental set up of a magnet-applied vapor compression system for liquid line. A hermetically screened compressor is used during the experimental setup. The condensing system will change the cooling stage from vapor to liquid once the condenser is installed. Then the use of a capillary tube eliminates high-pressure liquid coolant. The agitator is used for a uniform water temperature in the water tank.

Results and discussion
The output of the vapor compression process is used as baseline information without adding a magnetic field. On the exit line of the condenser is applied the first magnetic intensity at a rate of 3000 gauss and reading is registered.
To research the effect on compressor energy when the magnetic force is applied on the condenser exit line and the increased magnetic power order.

Compressor Power for different refrigerants
Due to the incomplete evaporation of coolants, the vapour compression system compressor absorbs additional power. If any liquid refrigerant exits the compressor, the compressor absorbs more liquid coolant with more energy to boil. If magnetic field is applied to the condenser exit line, its vaporization increases the amount of liquid cold and reduces the energy consumption of the compressor. It rising compressor power by increasing the gauss rate. Figure2 shows the power of the compressor versus the magnetic field strength for the R134a. The average compressor efficiency for gauss rates 3000 is reduced by 1.35% relative to the non-magnet field. Average compressor energy falls by 6.23 %, 5.40% respectively and 4.19 per cent for gauss rates 6000, 9000 and 12000. The compressor power versus the magnetic field strength for the R407a is shown in figure 4. The average compressor strength of gauss level 3000 has been decreased by 7.3% compared to no magnet field. The average compressor capacity at Gauss rate 6000, 9000, 12000 and 13000 reduces respectively by 9.19%, 13.05% and 12.40%. The compressor energy versus magnetic force of R290 is shown in Figure5. The rate of gauss increases the compressor power. The average compressor power of Gauss level 3000 is decreased by 3.60% compared to no magnetic field. The average compressor power for gauss rates 6000, 9000 and 12000 is decreased by 5.35%, 5.73% and 6.11% respectively.

Conclusions
During the test, the compressor energy savings of the compression cooling system was investigated under the influence of magnetic field using various refrigerants such as R134a, R151a, R407a, and R290. The magnetic field has shown a positive effect on a decrease in vapor compression system power consumption.
The maximum power saving for R152a at 12000 gauss rate was 25.86 percent.