Air conditioner system energy saving method and device

Abstract

The invention discloses a method of reducing water pump energy consumption and improving host machine efficiency through installing a water flow regulating valve with constant inlet and outlet water temperature difference at the water inlet or the water outlet of an air conditioner system heat exchange coil, and the water flow regulating valve with constant inlet and outlet water temperature difference used for realizing the method. The water flow regulating valve with constant inlet and outlet water temperature difference is formed by a water inlet temperature sensor, a water outlet temperature sensor, a controller, a water flow regulating valve and a regulating valve driver. When the flow and the temperature of air on the air side of the heat exchange coil are varied, after the controller makes a comparison between internal preset corresponding temperature difference and actual inlet and outlet water temperature difference according to the different inlet water temperatures detected by the sensor, the controller outputs a signal to the regulating valve driver to vary water flow to keep the inlet and outlet water temperature difference to be unchanged and to prevent the situation of large flow and small temperature difference from occurring in the system. The controller is connected with the indoor temperature controller of the heat exchange coil. After a closing signal output by the indoor temperature controller of the heat exchange coil is received, the water flow regulating valve is fully closed.

Description

technical field [0001] The invention relates to an energy-saving method of an air-conditioning system composed of a refrigeration main engine, a heating main engine, a water pump, a fan, a heat exchange coil and the like, and a water flow regulating valve with constant temperature difference between inlet and outlet water for realizing the method. Background technique [0002] Because heat exchange coils can realize energy regulation simply by adjusting air volume or water volume, heat exchange coils are widely used in air conditioning systems. In some occasions, an on-off electric two-way valve and an indoor temperature controller are used together in the heat exchange coil water system. Whether the heat exchange coil is running at high air volume or low air volume, the electric two-way valve only has two states: on and off. That is, it is fully opened when cooling or heating is required and completely closed when cooling or heating is not required, as stated in the "Applic...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the phenomenon that in the existing air-conditioning system, when the air volume of the heat exchange coil is adjusted, the water volume cannot be automatically adjusted accordingly, resulting in a large flow rate and small temperature difference in the system, and to provide a water pump that saves energy consumption and improves Method of cooling and heating host efficiency

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