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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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. It was also important to understand the energy-saving potential of an EC, based on M-cycle.
Keeping the humidity ratio of product air constant, it succeeds in decreasing the air temperature down to ambient wet-bulb temperature and close to ambient dew-point dp temperature, by a smart heat and mass transfer procedure.
This paper aims at describing maisootsenko a simple way the M-cycle operation and utilization and at presenting some useful experimental data, to prove the high efficiency of M-cycle, under Mediterranean climate conditions. On the other hand, indirect ECs IECs are based on two different streams working [wor] and product [pro]in majsotsenko to get a relatively drier product stream, but its temperature is not as low as it would be by a DEC.
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. To evaluate the performance of an M-cycle—based device, a HMX of a nominal cooling capacity of 0.
Maisotsenko cycle: technology overview and energy-saving potential in cooling systems
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. Thus, the payback period of an EC, compared to a conventional one, is about 2. Evaporation cools the air while increasing its moisture content or relative humidity.
So, if we aim to minimize water consumption, the lowering of the working stream mass flow is the best solution the cooler consumes less than 1. At humid climates, the cycle could not be recommended, as both product air temperature and hourly consumption are rather high.
The fan draws in warm and dry ambient air through the wet blocks, cooling it. No heat is added or taken out of the air; thus, it is an adiabatic process of constant enthalpy.
Usually, the evaporating cooler manufacturers give a typical value of hourly water consumption; however, this value does not take into account the cooler efficiency. The full terms of this license are available at https: Int J Heat Mass Transf. Indirect evaporative cooling of air to a sub wet-bulb temperature.
Thermodynamic performance assessment of a novel air cooling cycle.
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. Comparative study of the performance of the M-cycle counter-flow and cross-flow heat exchangers for indirect evaporative cooling.
[Full text] Maisotsenko cycle: technology overview and energy-saving potential in | EECT
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 advantages of ECs. A typical direct EC DEC consists of a box with voluminous humidification blocks, a water pump, and a water distribution system.
For permission for commercial use of this work, please see paragraphs 4. 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.
Although conventional air-conditioning systems are widely accepted to be of high energy consumption, they cover a significant part of needs for air-conditioning. An ideal EC would produce air as cool as the wet-bulb temperature, while a real cooler cannot reach such a low temperature. Table 1 Ambient 1cooled air 2and exhaust air 2 conditions Abbreviations: The mmaisotsenko was placed in the center of each air duct, so as to measure the maximum velocity.
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The operation of the standard configuration of M-cycle is studied thereafter and useful conclusions are carried out, about the efficiency and the energy consumption electricity and water. Maisotsenko open cycle used for gas turbine power generation.