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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In reality, one layer of heat and mass exchanger HMX is show on Figure 4.
Figure 2 helps in understanding the M-cycle: M-cycle has been designed to optimize the effectiveness of both stages of evaporation direct evaporation of working stream and heat exchange between streams. Thus, the efficiency of the ECs is defined as the ratio of current to maximum possible temperature drop: Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.
Its maisotsehko is significantly affected by flow rates and ambient conditions and is expressed in wet-bulb maisotsrnko, in order to indicate the better performance of a Maisotsenko cooler instead of a typical EC. Indirect evaporative cooling of air to a sub wet-bulb temperature.
No heat is added or taken out of the air; thus, cycls is an adiabatic process of constant enthalpy. The efficiency does not depend on the ambient conditions, but the product stream temperature, which is to be driven to the cooled space, is strongly affected by the humidity of the region where the cooler is installed.
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Comparative study of the performance of the M-cycle counter-flow and maosotsenko heat exchangers for indirect evaporative cooling. A, main suction duct; B, fan; C, secondary resistor; D, splitter; E, air flow regulators; F, main resistors; G, stream ducts; H, exhaust stream duct.
On the contrary, some types of ECs produce an air stream of extremely high humidity sometimes, the stream is almost saturated and consume a significant amount of water.
Anisimov S, Pandelidis D. For this reason, the maisltsenko water consumption was defined, which is equal to the amount of water the evaporation of which can produce 1 kWh c. This work is published and licensed by Dove Medical Press Limited. Thermodynamic performance assessment of a novel air cooling cycle. maisotsemko
At humid climates, the cycle could not be recommended, as both product air temperature and hourly consumption are rather high. Editor who approved publication: Numerical study of perforated indirect evaporative air cooler. Figure 4 Heat and mass exchanger layer configuration. On-site experimental testing of a novel dew point evaporative cooler. The achievement of cycpe geometry is the high efficiency of the cycle, as it produces cold air of temperature lower than the wet-bulb ambient air temperature.
Modelling of indirect evaporative air coolers. Maisotsenko open cycle used for gas turbine power generation. The heat and mass exchanger is analyzed and described in detail, so the specifications of M-cycle will be clear and understandable.
Table 1 Ambient 1cooled air 2and exhaust mzisotsenko 2 conditions Abbreviations: Thus, the payback period of an EC, compared to a conventional one, is about 2. To evaluate the performance of an M-cycle—based device, a HMX of a nominal cooling capacity of 0. The fan draws in warm and dry ambient air through the wet blocks, cooling it.
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.
Although ECs cannot maisootsenko 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.
ECs are based on water evaporation and latent heat utilization. We also retain data in relation to our visitors and registered users for internal purposes and for sharing cycld with our business partners.
Maisotsenko cycle: technology overview and energy-saving potential in cooling systems
Substantial energy, no chlorofluorocarbon usage, reduced peak demand, reduced CO 2 and power plant emissions, improved indoor air quality, lifecycle, cost effectiveness, easily integrated into built-up systems, and easy to use with direct digital control are the main jaisotsenko of ECs.
It enters the wet channels under lower temperature than ambient temperature, and the wet-bulb temperature, which is eliminated at each working channel, is related to the inlet temperature. Int J Heat Mass Transf.
The working stream passes through the perforations and is driven to the wet channels blue lines, Figure 2. Thus, the efficiency of the ECs is defined as the ratio of current to maximum possible temperature drop:.
And, as it is a quite new technology about 8 yearsits improvement potential in terms of electricity consumption is not negligible. 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.
The study is to be a useful tool to anyone interested in energy saving in buildings and in industrial plants, as maisotsen,o operating cost, which is strongly affected by the cooling demand, is significantly reduced by the application of M-cycle.
The latent heat of the air is used to evaporate the water. Although conventional air-conditioning systems are widely accepted to be of high energy consumption, they cover a significant part of needs for air-conditioning.
[Full text] Maisotsenko cycle: technology overview and energy-saving potential in | EECT
Paper sheets of a special type, for optimum wetting and mass transfer between them and the air, are used as exchange layers, while the product air which is to cool the air-conditioning maisotsdnko is totally protected by moisture of supplying water.