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Cooling efficiency maximization method for cooling water system in central air-conditioner and control device

A central air-conditioning system, cooling water system technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc. Ignore the cooling tower fan power consumption and other issues to achieve the effect of cooling efficiency, improving dynamic performance, and low power

Active Publication Date: 2014-10-08
HANGZHOU ZETA TECH
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Problems solved by technology

[0004] Among them, the first method performs fuzzy control based on constant set values, so it cannot achieve real cooling water system energy saving; the second method considers the impact of cooling water system energy saving on the refrigeration host, but only focuses on the best Host efficiency, ignoring the power consumption of cooling water pump and cooling tower fan; the third method only considers the cooling host and cooling water pump in the cooling water system, ignoring the power consumption of cooling tower fan

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  • Cooling efficiency maximization method for cooling water system in central air-conditioner and control device
  • Cooling efficiency maximization method for cooling water system in central air-conditioner and control device
  • Cooling efficiency maximization method for cooling water system in central air-conditioner and control device

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Embodiment Construction

[0044] The following examples can make those skilled in the technical field understand the present invention more comprehensively, but do not limit the present invention in any way.

[0045] An embodiment of the present invention provides a method for maximizing the cooling efficiency of a central air-conditioning cooling water system, including the following steps:

[0046] Step A: Optimum condensing temperature algorithm: Under different central air-conditioning system loads and outdoor wet bulb temperatures, different condensing temperatures correspond to different cooling water system power values; therefore, there is an optimal condensing temperature, so that the operating power of the cooling water system To reach the minimum, use the following formula to calculate the cooling water system power:

[0047] N=f(t c , Q, t s ),

[0048] In the formula, N is the power of the operating refrigeration unit N 1 , Cooling water pump power N 2 , Cooling tower fan power N 3 a...

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Abstract

The invention relates to the field of energy conservation of central air-conditioner systems and aims at providing a cooling efficiency maximization method for a cooling water system in a central air-conditioner and a control device. The control device comprises a cooling water pump control cabinet, a cooling tower control cabinet, a main controller and an information acquisition module, wherein the information acquisition module, the cooling water pump control cabinet and the cooling tower control cabinet are bidirectionally connected with the main controller through signal wires respectively to achieve data transmission and signal control; the cooling water pump control cabinet comprises an intelligent cooling water pump controller with a communication port; the cooling tower control cabinet comprises an intelligent cooling tower controller with a communication port. The control device has the benefits that the cooling water system is dynamically adjusted according to the best condensation temperature under different loads and different outdoor wet-bulb temperatures; compared with fuzzy control, a self-organized fuzzy control mode based on a nerve network has the characteristics that the dynamic performance is improved and the target value can be closely followed.

Description

technical field [0001] The invention relates to the field of energy saving of central air-conditioning systems, in particular to a method and a control device for maximizing the cooling efficiency of a central air-conditioning cooling water system. Background technique [0002] In the field of central air-conditioning system energy saving, quite a few people think that compared with the chilled water system, the frequency conversion energy saving of the cooling water pump and the cooling tower fan in the cooling water system will cause the efficiency of the cooling host to decrease, resulting in an increase in the energy consumption of the cooling host. It's not worth the candle. Therefore, the energy saving of the central air-conditioning system will basically be transformed around the chilled water system. However, more and more studies have pointed out that although the energy saving rate of the cooling water system is not as good as that of the chilled water system, the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 沈岑沈新荣郁辉球章威军何川杨峰章程徐煜来
Owner HANGZHOU ZETA TECH
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