Device and method for synchronously recycling water potential energy of central air conditioning system

Abstract

The invention relates to a device for synchronously recycling water potential energy of a central air conditioning system. More than two paths of heat exchanging pipelines are connected in parallel between more than two water outlets of a water segregator and more than two water inlets of a water collector; a circulating water pump is arranged on each path of heat exchanging pipeline; more than two tail end air conditioners are connected in parallel to each path of heat exchanging pipeline; a water supply pipe is connected with the water inlets of the water segregator; the water outlet of the water collector is connected with a water return pipe; a driving water turbine and a driven water turbine which are connected with each other through a shaft coupling are arranged on the water return pipe and the water supply pipe respectively; the blade inclination direction of an impeller of the driving water turbine is opposite to that of an impeller of the driven water turbine; an electric regulating valve and a temperature sensor are arranged on a water outlet side, on which the water return pipe is positioned, of the driving water turbine; and the electric regulating valve and the temperature sensor are connected with a controller. Energy can be complemented for water supply by using recycled high-position water potential energy, so that energy of the air conditioning system is saved and investment on the central air conditioning system is reduced.

Description

technical field [0001] The invention relates to a device for synchronously recovering water potential energy in a central air-conditioning system and a method thereof, and belongs to the technical field of water energy storage in the central air-conditioning system. Background technique [0002] High-rise buildings mainly use central air-conditioning systems for ventilation and temperature regulation. The currently disclosed air conditioning unit uses a plate heat exchanger to separate the open reservoir from the closed air conditioner terminal water supply system. The primary side of the plate heat exchanger communicates with the reservoir through pipelines, while the secondary side of the plate heat exchanger They are respectively connected to the water separator and the water collector, and the heat exchange of the building is carried out through multiple pipelines between the water separator and the water collector, and the primary side and the secondary side of the plat...

AI Technical Summary

Problems solved by technology

Since the central air-conditioning system must use a heat exchanger for heat exchange, the one-time investment of the heat exchanger and the water pumps on both sides is relatively large.

2. The utilization rate of storage energy in the pool is reduced

For plate heat exchangers, there must be a certain heat transfer temperature difference between the cold and hot sides of the plate heat exchanger. Therefore, there is generally a 1-2°C heat transfer temperature difference between the cold and hot water in the reservoir and the cold and hot water supplied by the air conditioner, so the existence is reduced. The energy efficiency of the pool

3. High energy consumption

Since the water pumps are installed on both sides of the plate heat exchanger, that is, the primary pump and the secondary pump for plate replacement, since the heads of both are generally not less than 10m, when these two water pumps are running at the same time, the energy efficiency of the air conditioning system will be reduced by 10. %about

4. Complicated operation control

Since the primary pump and secondary pump of the plate heat exchanger need to run synchronously, the control is difficult, especially when the load is variable, the control is more complicated

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