Life below the wet bulb: The Maisotsenko cycle. Today’s combined-cycle power plants are attaining efficiencies near 50%. But a new technology promises levels . This paper investigates a mathematical simulation of the heat and mass transfer in the two different. Maisotsenko Cycle (M-Cycle) heat and mass exchangers. Request PDF on ResearchGate | On Dec 1, , Muhammad H Mahmood and others published Overview of the Maisotsenko cycle – A way.
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Vycle full terms of this license are available at https: In this chapter, a commercial cooler based on M-cycle is compared to a conventional one of the same cooling capacity:.
On the contrary, it is shown how disastrous a reduction of the working stream flow can be because the cyycle evaporation makes the cooler inefficient for significant temperature drops.
Maisotsenko cycle M-cycle applies an improved design of indirect evaporative cooling. The specific water consumption of the cooler under normal mode varies under common ambient conditions between 2. ECs are based on water evaporation and latent heat utilization. An easily configurable way to increase the efficiency of the cooler is to reduce the product to working mass flow ratio.
Maisotsenko cycle: technology overview and energy-saving potential in cooling systems
Evaporative air-conditioning is a really promising technology. A heat exchange layer is used between the working airstream and the supply airstream, because the ambient wet-bulb wb temperature is theoretically the minimum achievable temperature of a conventional evaporative system.
As the xycle cost is about 0. As the working stream passes through the wet channels, the water is evaporated and the required latent heat is absorbed by the dry channel, which becomes cooler and cooler Figure 3. Thermodynamic performance assessment of a novel air cooling cycle.
However, this method leads to a significant increase of specific water consumption. Thus, the malsotsenko period of an EC, compared to a conventional one, is about 2. In this paper, a cooler utilizing the M-cycle is analyzed; the aim was the production of dry and cool air with low electricity consumption only a simple axial fan of W consumes electricity and improvements of the cooler characteristics efficiency and water consumption.
[Full text] Maisotsenko cycle: technology overview and energy-saving potential in | EECT
Comparative study of the performance of the M-cycle counter-flow and cross-flow heat exchangers for indirect evaporative cooling. It is clear that, because the two currents do not interact, any water addition will not affect the product stream and its contribution to the increase of the latent heat, which causes evaporation, is linked to the temperature difference of the two streams.
To evaluate the performance of an M-cycle—based device, a HMX of a nominal cooling capacity of 0. Usually, the evaporating cooler manufacturers give a typical naisotsenko of hourly water consumption; however, this value does not take into account the cooler efficiency.
Journals Why Publish With Us? It enters the wet maisoteenko under lower temperature than ambient temperature, maizotsenko the wet-bulb temperature, which is eliminated at each working channel, is related to the inlet temperature.
Figure 2 helps in understanding the M-cycle: The achievement of this geometry is the high efficiency of the cycle, as it produces cold air of temperature lower than the wet-bulb ambient air temperature. The operation of the standard configuration of M-cycle is studied thereafter and useful conclusions are carried out, about the efficiency maisotseenko the energy consumption electricity and water.
The maisotseenko of conventional cooling systems by ones based on M-cycle leads to a significant environmental benefit, as:. Numerical study of perforated indirect evaporative air cooler.
The study is to be a useful tool to anyone interested in energy saving in buildings and in industrial plants, as the operating cost, which is strongly affected by the cooling demand, is significantly reduced by the application of M-cycle. Int J Energy Clean Environ. Using the experimental data, it is concluded that the specific water consumption tends to reduce as the ambient temperature increases due to a higher increase of the cooling capacity, varying between 2.
Scientific research focus on improved refrigerants the global warming potential of which is lower than that of restricted R or R or more effective compressors; however, the high operational cost of these units as well as its role in atmospheric pollution cannot significantly be limited. Anisimov S, Pandelidis D. At humid climates, the cycle could not be recommended, as both product air temperature and hourly maiisotsenko are rather high. For permission for commercial use of this work, please see paragraphs 4.
The heat and mass exchanger is analyzed and described in detail, so the specifications of M-cycle will be clear and understandable. Received 25 October It was also important to understand the energy-saving potential of an EC, based on M-cycle.
Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. Although ECs cannot achieve as low temperature as their users want due to the dew-point temperature restrictionM-cycle is the most effective IEC, the product air of which tends to the outlet air temperature of conventional building air-conditioning systems.
The hotwire maisltsenko placed in the center of each air duct, so as to measure the maximum velocity. Two cases of limited mass flow were examined.
Although conventional air-conditioning systems are widely accepted to be of high energy consumption, they cover a significant part of needs for air-conditioning.