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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Ignoring the rates of return, it is clear that at about 6, hours of operation Figure 7 vycle, the increased cost of installation of an EC balances the increased cost of operation of an conventional cooler. To evaluate the performance of an M-cycle—based device, a HMX of a nominal cooling capacity of 0. For permission for commercial use of this work, please see paragraphs 4. The replacement cjcle conventional cooling systems by ones based on M-cycle leads to a significant environmental benefit, as:.
Maisotsenko open cycle used for gas turbine power generation. And, as it is a quite new technology about 8 yearsits improvement potential in terms of electricity consumption is not negligible. It was also important to understand the energy-saving potential of an EC, based on M-cycle.
ECs based on M-cycle have been already installed to supply cool air to various applications domestic cooling, commercial and industrial buildings, etc. M-cycle, evaporative cooling, high efficiency, renewable energy, energy saving, low CO 2 emission Introduction Although conventional air-conditioning systems are widely accepted to be of high energy consumption, they cover a significant part of needs for air-conditioning.
M-cycle, evaporative cooling, high efficiency, renewable energy, energy saving, low CO 2 emission. On the other hand, indirect ECs IECs are based on two different streams working [wor] and product [pro]in order to get a relatively drier product stream, but its temperature is not as low as it would be by a DEC.
Even then, in this case, the efficiency is comparable to that of DECs, even without producing humid air like these and almost double the efficiency of typical indirect evaporative systems.
However, this method leads to a significant increase of specific water consumption.
[Full text] Maisotsenko cycle: technology overview and energy-saving potential in | EECT
The present paper deals with an overview of Maisotsenko cycle M-cycle. The correlation of the ambient temperature with the heat available for evaporation is also clear: In reality, one layer maosotsenko heat and mass exchanger HMX is show on Figure 4.
Some auxiliary devices fans and pump are needed to drive the air and the water into the cooler. Figure 4 Heat and mass exchanger layer configuration.
Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.
Thermodynamic performance assessment of a novel air cooling cycle. A heat exchange layer is used between the working airstream and the supply airstream, because cycoe ambient wet-bulb wb temperature is theoretically the minimum achievable temperature of a conventional evaporative system.
Journals Why Publish With Us? As the working stream passes through the wet maisofsenko, the maisotzenko is evaporated and the required latent heat is absorbed by the dry channel, which becomes cooler and cooler Figure 3. As the dangerous environmental effects of chlorofluorocarbons and greenhouse gases not only as direct emissions, but also as indirect emissions have been reduced, the interest is focused on environment-friendly cooling technologies.
Whereas conventional systems use chlorofluorocarbon based refrigerants CFCsevaporative coolers ECs use water.
Evaporative air-conditioning is a really promising technology. Two cases of limited mass flow were examined.
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An easily configurable way to increase the efficiency of the cooler is to reduce the product to working mass flow ratio. There are two basic categories of EC: Numerical study of perforated indirect evaporative air cooler.
The latent heat of the air is used to evaporate the water.
Table 1 Ambient 1cooled air 2and exhaust air 2 conditions Abbreviations: Indirect evaporative cooling of air to a sub wet-bulb temperature. The heat and mass exchanger is analyzed maisotsehko described in detail, so the specifications of M-cycle will be clear and understandable.
It enters the wet channels under lower temperature than ambient temperature, cyclee the wet-bulb temperature, which is eliminated at each working channel, is related to the inlet temperature.
Maisotsenko cycle: technology overview and energy-saving potential in cooling systems
If the working stream flow is limited, the weakening of the evaporation so the temperature drop in the product stream is lower works as an obstacle to the cooling capacity, but not as much as a limited product stream flow does.
Evaporation cools the air while increasing its moisture content or relative humidity. Although ECs cannot achieve as low temperature as their users want due to the maisootsenko temperature restrictionM-cycle is the most effective IEC, the maisostenko air of which tends to the outlet air temperature of conventional building air-conditioning systems.
For this reason, the specific water consumption was defined, which is equal to the amount of water the evaporation of which can produce 1 kWh c. Evaporation in an IEC is caused 1 by the sensible heat of the working stream and 2 by the sensible heat of the product stream. The fan draws in warm and dry ambient air through the wet blocks, cooling it.
According to the first configuration, the water evaporates into the air to be cooled; as a result, the product air is cold and wet. The working stream passes through the perforations and is driven to the wet channels blue lines, Figure 2. In this chapter, a commercial cooler based on M-cycle is compared to a conventional one of the same cooling capacity:. The hotwire was placed in the center of each air duct, so as to measure the maximum velocity.
Published 6 March Volume Both working pink lines and product red lines streams use dry channels Figure 1. Received 25 October Its efficiency is significantly affected by flow rates and ambient conditions and is expressed in wet-bulb terms, in order to indicate the better performance of a Maisotsenko cooler instead of a typical EC.