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Air renewal system of central air-conditioner and operation method thereof

A technology of ventilation system and central air conditioning, applied in heating and ventilation control system, heating and ventilation safety system, heating method, etc., can solve the problem of different minimum fresh air volume, etc. The effect of human comfort

Inactive Publication Date: 2013-05-08
昆山台佳机电有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, since the density of indoor people changes with time, the minimum fresh air volume required in different time periods is different

Method used

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  • Air renewal system of central air-conditioner and operation method thereof

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Embodiment 1

[0014] Such as figure 1 As shown, the ventilation system of the central air conditioner of the present invention comprises a controller 1, an indoor temperature sensor 2, an indoor humidity sensor 3, an outdoor temperature sensor 4, an outdoor humidity sensor 5, a CO2 concentration sensor 6 and is provided with an exhaust chamber 7, The air conditioning unit of the air chamber 8, the air exhaust chamber 7 is provided with an exhaust fan 10, and the air supply chamber 8 is provided with a blower 11, and the exhaust chamber 7 and the air supply chamber 8 are communicated through the air mixing valve 12; The cavity 7 is connected with the return air duct through the return air valve 13, and is connected with the exhaust air duct through the exhaust valve 14; the air supply chamber 8 is provided with an air supply valve 15 connected with the air supply duct and a fresh air valve connected with the fresh air duct 9. The indoor temperature sensor 2, indoor humidity sensor 3, and CO2...

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Abstract

The invention provides an air renewal system of a central air-conditioner and an operating method of the air renewal system which can automatically control induction ratio of outdoor new wind according to the indoor temperature, the indoor humidity and the indoor personnel density, and therefore the energy-saving purpose by means of the energy of the outdoor new wind is achieved. A controller of the air renewal system of the central air-conditioner calculates the value of enthalpy of the indoor air and the outdoor air by means of information of an indoor temperature sensor, an indoor humidity sensor, an outdoor temperature sensor and an indoor humidity sensor, obtains the concentration of carbon dioxide of the indoor air from a carbon dioxide concentration sensor, and controls the opening degree of a return air valve, an exhaust valve, a mixed air valve, a blow valve according to the operating mode of the air conditioner, the comparison of the enthalpy value of the indoor air and the enthalpy value of the outdoor air, the temperature of the indoor air, the temperature of the outdoor air and the concentration of the carbon dioxide of the indoor air. The air renewal system of the central air-conditioner and the operation method of the air renewal system of the central air-conditioner utilize outdoor fresh air as much as possible to assist in improving the comfortable degree of the human body, reduce refrigeration power consumption or heating power consumption of the air conditioner unit, and achieve the purpose of energy conservation.

Description

technical field [0001] The invention belongs to the technical field of central air-conditioning, and in particular relates to a central air-conditioning ventilation system and an operating method thereof. Background technique [0002] The air system is one of the main equipment of the central air-conditioning system, and its power consumption accounts for about 20-40% of the power consumption of the entire central air-conditioning system. Improving the energy efficiency level of these units is of great significance to energy conservation and emission reduction. [0003] In order to ensure the quality of indoor air in public buildings, it is necessary to provide an appropriate amount of outdoor fresh air according to the number of people in the room. However, since the density of indoor people changes with time, the minimum fresh air volume required in different time periods is different. In cooling: when the enthalpy of outdoor air is greater than that of indoor air, the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02F24F13/02
Inventor 张扣奇何辉
Owner 昆山台佳机电有限公司
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