Investigation and simulation of a cooling cycle based on Misotsenko concept

Document Type : Article

Authors

D‌e‌p‌t. o‌f M‌e‌c‌h‌a‌n‌i‌c‌a‌l E‌n‌g‌i‌n‌e‌e‌r‌i‌n‌g S‌h‌a‌r‌i‌f U‌n‌i‌v‌e‌r‌s‌i‌t‌y o‌f T‌e‌c‌h‌n‌o‌l‌o‌g‌y

Abstract

The Maisotsenko cycle is a novel thermodynamic concept which captures the internal energy in an air cooling process by using the latent heat of evaporation of water. This concept is a regenerative indirect evaporative cooling cycle (RIEC) which utilizes a new arrangement of airflow streams to achieve better performance. In the field of air conditioning, this cycle is known as a high efficiency cooling cycle due to the cooling of the air-water vapor flow temperature to its dew point temperature. Most commonly known variant of this concept is a crossflow cooler which will be examined in this paper.

In the present study, the governing equations of a heat and mass exchanger based on the Maisotsenko cycle has been extracted. This heat and mass exchanger has been analyzed and simulated in the month of July, which is the hottest month of the year, in the climatic conditions of Tehran. Temperature analysis utilizing the finite difference method has shown that the heat and mass exchanger based on the Maisotsenko cycle has superior performance than existing devices in the cooling air process in the field of air conditioning technology. the air temperature in Tehran decreases from 40.2o C to 22.2o C when passing through the device.

The possibility of employing a Maisotsenko cycle air conditioner in different climates of Iran has been investigated in this study. The results revealed that the cooler based on the Maisotsenko cycle performs satisfactorily for more than 85 percent of the population and more than 86 percent of the regions of Iran. Also, according to the acquired data, the air conditioner based on the Maisotsenko cycle operates with an average coefficient of performance of 31 in various regions of Iran. The airflow passing through this heat and mass exchanger is cooled to 90% of it’s inlet wet bubble temperature.

Keywords


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