Natural cooling unit control method, device, equipment and cooling system
A unit control and natural cooling technology, applied in heating and ventilation control systems, mechanical equipment, air conditioning systems, etc., can solve problems such as poor energy saving effect of natural cooling units
Active Publication Date: 2022-03-01
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0004] Aiming at the problem of poor energy-saving effect of traditional natural cooling units, the present invention proposes a control method, device, equipment and cooling system of natural cooling units. The control method, device, equipment and cooling system of natural cooling units can save energy The technical effect of consumption
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[0050] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0051] In one embodiment, a method for controlling a free cooling unit is provided. The method can be executed by a control device. The control device can be an additional independent control device that does not belong to the original free cooling unit, or it can be an independent control device in the natural cooling unit. For the existing controller, it is enough to add corresponding functions on the basis of the original controller, which can save hardware cost.
[0052] The natural cooling unit usually includes a liquid pump, a working medium flow pipeline, a first he...
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The application relates to a control method, device, equipment and cooling system of a natural cooling unit. First, set the operating frequency of the liquid pump and the fan, calculate the total power of the unit, and then obtain the temperature difference of the cooling medium before and after passing through the corresponding heat exchanger, obtain the cooling capacity of the unit according to the temperature difference of the medium, and obtain the performance coefficient according to the cooling capacity of the unit and the total power of the unit , when more than two performance coefficients are obtained, the operating frequency of the liquid pump and the fan corresponding to the largest performance coefficient are selected as the operating parameters of the unit. By setting different operating frequencies of liquid pumps and fans, the coefficient of performance is calculated. The larger the coefficient of performance, the more energy-efficient the system is. Select the operating frequency corresponding to the maximum performance coefficient and the operating frequency of the fan as the operating parameters of the unit, and use the algorithm to calculate the optimal operating frequency of the fan and liquid pump, which can make the natural cooling unit run in the energy-saving mode and save energy consumption of the unit.
Description
technical field [0001] The present application relates to the technical field of cooling equipment, in particular to a control method, device, equipment and cooling system of a natural cooling unit. Background technique [0002] Cooling techniques are usually used to reduce the ambient temperature and provide a suitable working environment for the device. For some data centers, production processes and other systems that require cooling all year round, the chiller needs to operate as usual even if the outdoor temperature is lower or far lower than the temperature of its circulating chilled water. When the outdoor temperature is low, cooling can be provided without turning on the compressor for cooling. This method is called a natural cooling method, and units with this function are called natural cooling units. [0003] The natural cooling unit is used when the ambient temperature is low in winter. Compared with compressor refrigeration, the natural cooling unit only consum...
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IPC IPC(8): F24F5/00F24F11/46F24F11/85F24F11/77F24F11/65F24F140/20F24F140/50
CPCF24F5/00F24F11/46F24F11/85F24F11/77F24F11/65F24F2140/20F24F2140/50Y02B30/70
Inventor 李娜程琦陈培生刘思源路朋博
Owner GREE ELECTRIC APPLIANCES INC