Central air conditioner chilled water system energy-saving device based on variable-frequency control
A technology of chilled water system and central air conditioning, applied in heating and ventilation control system, heating and ventilation safety system, control input involving air characteristics, etc.
Inactive Publication Date: 2015-04-29
SHANGHAI DAZHONG XIANGYUAN POWER SUPPLY
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Problems solved by technology
In this control mode, a bypass valve is needed for pressure relief to maintain a constant pipeline pressure, and the energy saving effect is obviously not good.
Method used
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Embodiment 1
[0017] like figure 1 As shown, a central air-conditioning chilled water system energy-saving device based on frequency conversion control includes a primary water tank 1, a secondary water tank 2, an air-conditioning load 3, and a return water tank 4 connected in series, and also includes a flow sensor 5 and a frequency conversion controller 6. The flow sensor 5 is arranged between the air-conditioning load 3 and the return water tank 4, and is connected to the frequency conversion controller 6. The first-stage water tank 1 is respectively connected to the secondary water tank 2 through the chilled water pump 8, and the secondary water tank 2 is provided with The water supply pressure sensor 7, the frequency conversion controller 6 are respectively connected to the chilled water pump 8 and the water supply pressure sensor 7; the chilled water outlet of the air conditioner load 3 is provided with a two-way valve 11 for controlling the chilled water flow. The water return tank 4...
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The invention relates to a central air conditioner chilled water system energy-saving device based on variable-frequency control. The air conditioner chilled water system energy-saving device comprises a primary water tank, a secondary water tank, an air conditioner load and a water return tank which are serially connected in sequence, and further comprises a flow sensor and a variable-frequency controller, wherein the flow sensor is arranged between the air conditioner load and the water return tank and is connected with the variable-frequency controller; the primary water tank is connected with the secondary water tank through chilled water pumps respectively; a water supply pressure sensor is arranged on the secondary water tank; the variable-frequency controller is respectively connected with the chilled water pumps and the water supply pressure sensor. Compared with the prior art, the central air conditioner chilled water system energy-saving device has the advantages of energy conservation, environment protection and the like.
Description
technical field [0001] The invention relates to energy saving of chilled water in a central air-conditioning system, in particular to an energy-saving device for the chilled water system of a central air-conditioning system based on frequency conversion control. Background technique [0002] With the shortage of energy resources in the world and the increasing environmental pressure brought about by global warming, saving energy and protecting the environment have become major issues that cannot be ignored by countries all over the world. The energy consumption of the central air-conditioning system accounts for more than half of the energy consumption of buildings, of which the energy consumption of chilled water pumps and other equipment accounts for a large part. [0003] Chilled water systems include constant flow primary pump systems, constant flow secondary pump systems, variable flow primary pump systems, and variable flow secondary pump systems. [0004] The chilled...
Claims
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IPC IPC(8): F24F11/02
CPCF24F11/83F24F11/30F24F11/85F24F2110/00F24F2140/12F24F2140/50
Inventor 苏胜峰宋佳耀陆志良周建东赵炆姚新
Owner SHANGHAI DAZHONG XIANGYUAN POWER SUPPLY