A multi-connected central air-conditioning unit condensate recovery and utilization system

Abstract

The invention provides a multi-split central air conditioning unit condensation water recycling system comprising a condensation water recycling device and pad-fan cooling devices. The condensation water recycling device is connected with an evaporator at the tail end of an air conditioning unit, the pad-fan cooling devices are mounted at air inlets of condensers of the air conditioning unit, the condensation water recycling device is connected with the pad-fan cooling devices through branch water outlet pipes, and a flow regulating valve is arranged on each branch water outlet pipe. Condensation water of the system is collected to serve as a water source of the pad-fan cooling devices, so that dual purposes of air conditioning energy saving and no condensation water emission are achieved; flow control devices are arranged in the condensation water recycling system, so that the condensation water collected from each evaporation unit can be reasonably redistributed and delivered according to working load of each condenser, and utilization rate of energy resources is increased to the greatest extent; water for pad-fan evaporation is mainly from evaporator condensation water of an air conditioning system, the water is quite low in inorganic salt content and close to distilled water, and a pad fan and condenser fins can be prevented from scaling after long-term use.

Description

technical field [0001] The invention relates to the field of energy saving and environmental protection, in particular to a system for recycling condensed water of multiple central air-conditioning units. Background technique [0002] The existing air-cooled multi-connected central air-conditioning unit is more and more widely used because of its convenient use and simple means of temperature control and adjustment. However, in the hot summer season, due to the high air temperature, the working conditions of the air conditioner condenser will deteriorate, the cooling performance will decrease significantly, and the condensation pressure will increase. Not only the energy consumption of the air conditioner unit will be high, but also the equipment failure rate will increase. In order to solve the above problems, a wet curtain cooling device can be installed at the air inlet of the condenser, and the fan makes the outside air pass through the wet curtain cooling device to beco...

AI Technical Summary

Problems solved by technology

Each wet curtain cooling device in the existing system supplies water evenly, but since the condensers and evaporators of the multi-connected central air-conditioning unit are not in a simple one-to-one relationship, the heat and humidity loads of each evaporation unit are not the same , and due to the difference in control strategies, the heat load of each condensing unit is also different. If the water supply is simply distributed evenly to the cooling device of each condensing unit, it will cause a waste of energy

The evaporation water of the wet curtain has not been softened, and the content of inorganic salt is high. Long-term use will cause fouling of the wet curtain and the warp of the condenser, which will affect the cooling effect.

[0003] On the other hand, the use of multi-connected central air-conditioning units will generate a large amount of low-temperature condensed water through the evaporator of the air-conditioning unit. Improper discharge of this condensed water will bring environmental pollution problems, such as the risk of Legionella breeding and spreading, and the existence of energy waste of

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