Combined cold supply system of cooling towers and water cooling unit and control method thereof

A technology of a chiller unit and a control method, which is applied to heating and ventilation control systems, heating and ventilation safety systems, air conditioning systems, etc., to achieve the effects of long cooling time, high energy utilization rate, and good energy saving effect

Active Publication Date: 2010-02-17
BEIJING KANGFU TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0020]In short, the cooling tower cooling system commonly used in engineering needs to be further improved in terms of scheme design, operation adjustment, etc.

Method used

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  • Combined cold supply system of cooling towers and water cooling unit and control method thereof
  • Combined cold supply system of cooling towers and water cooling unit and control method thereof
  • Combined cold supply system of cooling towers and water cooling unit and control method thereof

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Embodiment Construction

[0041] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims. The same components are denoted by the same reference numerals in the drawings.

[0042] In the process of implementing the refrigerating station system of the central air-conditioning system, the inventors found that as long as the outlet water temperature of the cooling tower (or the secondary side of the heat exchanger) is lower than the frozen return water temperature of the air-conditioning terminal system, the cold water provided by the cooling tower will be It can start to share the cooling load demand of the air-conditioning terminal system to reduce the operating load of the chiller in the refrigeration station, so as to achieve energy saving effect. This point cannot be realized by the current independent switching operation scheme of the tw...

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Abstract

The invention discloses a combined cold supply system of cooling towers and a water cooling unit, comprising a refrigeration unit, a heat exchanger, a plurality of cooling towers, a temperature detection device and a control device, wherein the refrigeration unit is used for supplying frozen water for an air conditioner end system; the heat exchanger is used for supplying cooling water for the airconditioner end system; the cooling towers are used for selectively supplying the cooling water for the heat exchanger and the refrigeration unit; the temperature detection device is at least used for detecting the water outlet temperature of the cooling towers and / or the temperature of the cooling water of the heat exchanger and the demand temperature and the water return temperature of the cooling water of the air conditioner end system; and the control device is used for controlling the cooling water of the cooling towers and simultaneously or individually supplying the cooling water for the heat exchanger and the refrigeration unit according to the relationship among all temperatures detected by the temperature detection device. The invention also discloses a control method of the combined cold supply system of the cooling towers and the water cooling unit. A combined cold supply mode of the cooling towers and the water cooling unit is adopted, and therefore, the combined cold supply system has the advantages of higher utilization ratio of the cold supply energy quantity of the cooling towers, longer cold supply time and better energy saving effect.

Description

technical field [0001] The invention relates to a cooling system of a central air-conditioning system of a building, in particular to a cooling system which achieves energy saving and consumption reduction through the combined cooling of a cooling tower and a water chiller, and a control method for the cooling system. Background technique [0002] The cooling tower cooling system (also known as free cooling, free cooling) is a system form used for energy saving and consumption reduction of the refrigeration station of the central air-conditioning system of the building. It is suitable for the cooling demand of the building air-conditioning system in the transition season and winter , and it is impossible or not suitable to use fresh air cooling source. [0003] For example, for a modern office building with a fan coil unit plus a fresh air system, the inner area of ​​the building often requires the air conditioning system to provide cooling throughout the year, and in the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F3/06F24F11/02
Inventor 敖顺荣
Owner BEIJING KANGFU TECH
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