A numerical and experimental study on the energy efficiency of a regenerative Heat and Mass Exchanger utilizing the counter-flow Maisotsenko cycle

Figures & data

Figure 1. Schematic diagram of indirect evaporative cooler with various configurations: (a) HMX A; (b) HMX B; (c) HMX C; (d) HMX D; (e) HMX E.

Table 1. Specifications of the parameters used in the experiment.

HMX specification	Unit	Dimension
External size (W × H × L)	mm	290 × 400 × 500
Channel height (dry/wet)	mm	80/400
Channel gap	mm	5
Wall thickness	mm	0.3
Working air to intake air ratio	kg/kg	0.38

Figure 2. Photographic view of the actual HMX.

Figure 3. The schematic diagram of the constructed indirect evaporative experimental set-up.

Table 2. Specification of measuring devices.

Parameters	Instruments	Accuracy	Range
Temperature	Digital thermometer	±0.5°C	−50_300°C
Air flow	Anemometer	±%3	0–45 m/s
Humidity	Hygrometer	±%3	0–99%

Figure 4. Schematic of the counter-flow regenerative and differential control volumes.

Figure 5. Comparison of numerical results with the experimental values of Riangvilaikul and Kumar (2010a) for product air temperature with various inlet air conditions.

Figure 6. Comparison of numerical results with the present experimental values for product air temperature with various inlet air conditions.

Figure 7. Product cooling air temperature for various inlet air conditions.

Figure 8. Wet-bulb effectiveness for various inlet air conditions.

Figure 9. Dew-point effectiveness for various inlet air conditions.

Figure 10. Effect of inlet air flow rate on (a) product cooling air temperature, (b) wet-bulb effectiveness, and (c) dew-point effectiveness in theoretical and experimental studies.

Riangvilaikul, B., & Kumar, S. (2010a). An experimental study of a novel dew point evaporative cooling system. Energy and Buildings, 42(5), 637–644. doi: 10.1016/j.enbuild.2009.10.034

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