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Air conditioner chilled water temperature adjustment operation method based on outdoor temperature and humidity

A technology of chilled water temperature and outdoor temperature, applied in the direction of heating mode, space heating and ventilation, control input related to air characteristics, etc., can solve the problem of not analyzing the operation strategy of the chilled water outlet temperature of the air conditioner host, and achieve air conditioning saving The effect of energy consumption

Active Publication Date: 2017-07-21
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their research is usually only under a specific climatic condition, and does not analyze the operation strategy of the chilled water outlet temperature of the air conditioner when the outdoor temperature and relative humidity change drastically.

Method used

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  • Air conditioner chilled water temperature adjustment operation method based on outdoor temperature and humidity
  • Air conditioner chilled water temperature adjustment operation method based on outdoor temperature and humidity
  • Air conditioner chilled water temperature adjustment operation method based on outdoor temperature and humidity

Examples

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Embodiment 1

[0092] 1) An office building with a construction area of ​​160,000 m 2 , with a 30 m 2 The office is the object of verification, there are 5 people in the room, and the total moisture dissipation is 9.452×10 -2 g / s;

[0093] 2) Set the indoor temperature and humidity threshold range, the temperature is 22°C~24°C, and the relative humidity is between 40%~65%;

[0094] 3) Collect the air volume at the main air-conditioning terminal and the temperature and humidity at the inlet and outlet, and fit the formula for the heat and humidity exchange of the terminal equipment;

[0095]

[0096] 4) Collect the temperature and relative humidity of the outdoor air of the target building;

[0097] 5) Calculate the maximum outlet temperature of chilled water under the condition of meeting the target through the collected parameters and input data;

[0098] Taking the outdoor dry bulb temperature of 30°C as an example, use formula (9) to calculate the dehumidification effect of differ...

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Abstract

The invention provides an air conditioner chilled water temperature adjustment operation method based on the outdoor temperature and humidity. The method comprises the specific steps that (1) the indoor temperature and humidity are acquired, and the indoor moisture dispersed amount is calculated according to the indoor temperature, the indoor humidity and the indoor water body temperature; (2) an indoor temperature threshold value range and an indoor humidity threshold value range are set; (3) the main air conditioner terminal blast capacity and inlet and outlet temperatures and humidity are acquired, and a terminal equipment heat-humidity exchange formula is fitted; (4) the temperature and relative humidity of outdoor air of a target building are acquired; (5) the maximum outlet water temperature of chilled water under the situation that a target is met is obtained through calculation through the acquired parameters and input data; (6) the indoor temperature and relative humidity are acquired after a period of time of operation; and (7) whether the indoor temperature and humidity meet temperature and humidity threshold value requirements or not is judged, the outlet water temperature and / or indoor moisture dispersed data are / is continuously adjusted until the requirements are met, accordingly the air conditioner indoor temperature and humidity requirements can be basically met, and an air conditioning system has the effects of comfort and energy conservation.

Description

technical field [0001] The invention relates to the field of air-conditioning control, in particular to an energy-saving control method for adjusting the chilled water outlet temperature of an air-conditioning unit, specifically a method for adjusting the chilled water temperature operation of an air conditioner based on outdoor temperature and humidity. Background technique [0002] The chilled water outlet temperature of the main unit of the existing mainstream central air-conditioning system is fixed at 7°C, which can usually meet the full-load cooling demand in the hottest climate throughout the year. However, the full-load operating time of the air-conditioning system generally only accounts for about 3% of the annual air-conditioning operating time, and in areas with low air humidity, 7°C chilled water will dry the indoor relative humidity to below 40%. If it still runs at 7°C chilled water temperature, it will waste energy and affect comfort. [0003] According to ...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/62F24F11/64F24F2110/10F24F2110/12F24F2110/22F24F2120/10
Inventor 陈振乾徐笑强
Owner SOUTHEAST UNIV
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