Indirect evaporative cooling air conditioning unit with fluoride pump energy saving function and control method

Abstract

The invention discloses an indirect evaporative cooling air conditioning unit with the fluoride pump energy saving function and a control method. The air conditioning unit comprises a heat exchange core body arranged in a unit shell, an outdoor side air flow channel used for conveying cold air, and an indoor side air flow channel used for conveying hot air. The outdoor side air flow channel flowsthrough an outdoor air channel of the heat exchange core body; the indoor side air flow channel flows through an indoor air channel of the heat exchange core body; and the air conditioning unit further comprises a controller, a fluorine circulating pump, a flow control component, a condenser and an evaporator arranged in the indoor side air flow channel. The condenser is located at the position, from an outdoor side air inlet to the heat exchange core body, of the outdoor side air flow channel, the condenser, the fluorine circulating pump, the flow control component and the evaporator are connected through copper pipes to form a loop, and the fluorine circulating pump and the flow control component are electrically connected with the controller. The method is used for solving the problemsof condensation and icing on the inner side of the heat exchange core body of the unit at extremely low temperature and improving the refrigerating efficiency of the unit at extremely low temperature.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a fluorine pump energy-saving indirect evaporative cooling air conditioning unit and a control method. Background technique [0002] As shown in patent documents CN201822222249.3 and CN201821974088.7, the indirect evaporative air conditioning system used in data centers generally includes a water spray system, an inside wind system, an outside wind system, a heat exchange core for heat exchange between the inside wind and the outside wind, and Auxiliary cooling system. And there are three main modes of operation: dry mode, wet mode, mixed mode of wet mode + mechanical refrigeration (or other supplementary cooling methods such as chilled water coil supplementary cooling). When the application environment temperature is low, run the dry mode, the water spray system on the outside of the unit is not turned on, and the air outside the unit and the inside air are refrigerated through ...

AI Technical Summary

Problems solved by technology

[0003] When the ambient temperature is extremely low, the inner side of the heat exchange core of the existing indirect evaporative cooling air-conditioning unit may have too much condensed water or even freeze. The outlet air is partially bypassed to the inlet air through the air valve to increase the inlet air temperature, but this method will reduce the heat transfer capacity of the subsequent heat exchange core, resulting in a decrease in the cooling effect of the indoor side wind, and the addition of air valves and other equipment is required. Make the structure of the unit complex, the volume of the whole machine increases, and the cost increases

There is also a solution to install electric heating wires at the air inlet on the outdoor side, but this method will also reduce the cooling effect of the unit and consume additional power, which is not conducive to the improvement of heat exchange efficiency under low temperature conditions

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