Cross-current composite indirect evaporation cooling air processor

Abstract

The invention discloses an cross current combination indirect evaporative cooling air processor, wherein a dry channel and a wet channel evenly distributed are spaced and intercrossed, forming an indirect evaporative cooling heat exchanger of which the wet channel is vertically divided into two levels of wet channels by a line of vertical division bars and the dry channel is run-through; a separator arranged on the lower part of the heat exchanger divides a dry channel outlet of the heat exchanger into two parts of an upper part and a lower part, wherein the upper part of the dry channel outlet is connected with an air inlet of a primary air fan, the lower part of the dry channel outlet is communicated with an air inlet of the second level wet channel of the heat exchanger; an air inlet of a secondary air fan arranged on the front lower part of a shell is communicated with an air inlet of the first level wet channel of the heat exchanger; air outlets of the first level and the second level wet channels of the heat exchanger are communicated with the air inlet of the secondary air fan. The invention has the advantages of relatively small resistance and pressure drop of the system, high evaporative cooling efficiency, compact assembly structure and small volume, and can improve the isohumidity temperature reduction efficiency of the primary air and make the outlet air temperature of the assembly being close to the dew-point temperature of the inlet air.

Description

technical field [0001] The invention relates to the technical field of renewable energy, and belongs to the improvement of air-conditioning equipment, in particular to a cross-flow composite indirect evaporative cooling air processor with dry air as the power source. Background technique [0002] The indirect evaporative cooler is essentially a special heat exchanger, a composite heat exchanger of direct contact (hybrid) heat and mass exchange equipment and a partitioned wall heat exchanger. For indirect evaporative coolers, most of the mature applications are cross-flow heat and moisture exchange types. [0003] The ratio of secondary air flow to primary air flow has a direct impact on the cooling efficiency of the indirect evaporative cooler. Theory and experiments show that with the increase of the secondary air flow, the cooling efficiency of the indirect evaporative cooler has been increasing, but for two When the secondary air flow rate increases to a certain value, t...

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Problems solved by technology

[0003] The ratio of secondary air flow to primary air flow has a direct impact on the cooling efficiency of the indirect evaporative cooler. Theory and experiments show that with the increase of the secondary air flow, the cooling efficiency of the indirect evaporative cooler has been increasing, but for two When the secondary air flow increases to a certain value, the efficiency of intercooling tends to increase slowly

As the secondary air flow continues to increase, the increase in cooling efficiency is very limited. If the heat and moisture exchange efficiency of the indirect evaporative cooler is simply increased by increasing the secondary exhaust air volume, the energy efficiency ratio of the whole machine will decrease.

In addition, this type of unit is usually larger in size and needs to occupy more building space.

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