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Control method and system of radiant cooling air-conditioning system

A control method and technology of radiant cooling, applied in control input related to air characteristics, heating and ventilation control system, heating and ventilation safety system, etc. Refrigeration and air-conditioning system market and other issues to achieve the effect of ensuring cooling capacity and preventing condensation

Active Publication Date: 2015-10-14
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the traditional radiant cooling air conditioning system, when the water supply temperature is low or the indoor humidity is high, condensation is easy to appear on the surface of the radiant panel
In addition, when the doors and windows are opened, the outdoor hot and humid air enters, and it is easy to generate condensation when it comes into contact with the low-temperature radiant panel.
Condensation issues greatly limit the market for radiant cooling air conditioning systems

Method used

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  • Control method and system of radiant cooling air-conditioning system
  • Control method and system of radiant cooling air-conditioning system
  • Control method and system of radiant cooling air-conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Assuming that the preset time period is one week (7 days), the unit controller records the calculated dew point temperature T within 7 days before the detection day in units of one hour z，j , where z represents the number of days in the preset time period, z ranges from 1-7, j represents the moment, and j ranges from 1-24. e.g. T 1，2 Represents the recorded dew point temperature at 2 o'clock one day before the detection day, T 6，21 Represents the recorded dew point temperature at 21:00 6 days before the detection day.

[0077] Calculate the dew point temperature T at each unit time point within these 7 days by calculating the weighted average temperature z，j The average value, including the dew point temperature T at each point of time from 1 to 24 points in 7 days z，j The average value of, for example, the average value of the dew point temperature at 1 point is (T 1，1 +T 2，1 +…+T 7，1 ) / 7, in the same way, the average value of the dew point temperature at points ...

Embodiment 2

[0084] Further, as a possible implementation mode, the control method of the radiant cooling air-conditioning system of the present invention further includes the following steps:

[0085] S600', if the current detection is the first detection on the detection day, then acquire the recorded dew point temperature T at each unit time point within 24 hours of the day before the detection day de，i ;

[0086] S700', calculate the dew point temperature T of each unit time point within 24 hours of the day before the detection day de，i and dew point temperature T de，i The dew point temperature T corresponding to the unit time point in the time-by-hour change curve de，i The difference between and take the average value;

[0087] S800', take the average value as the second correction value, and the dew point temperature T de，i In the time-by-hour change curve of the current detection time, the curve parts corresponding to P unit time points after the current detection time are super...

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Abstract

The invention discloses a control method and system of a radiant cooling air-conditioning system. The method includes the steps that the indoor temperature Te,i and wet-bulb temperature Tw,i of each opened room at a radiant cooling tail end and the dry-bulb temperature Tf,i of the surface of each cold radiation panel are detected; according to the detected indoor temperatures Te,i and the detected wet-bulb temperatures Tw,i, the dew-point temperatures Tde,i of the rooms are calculated; according to the detected indoor temperatures Te,i of the rooms, the detected dry-bulb temperatures Tf,i of the surfaces of the cold radiation panels and the calculated dew-point temperatures Tde,i, the frequency of a compressor is regulated so that the supply water temperature Tg,i of the cold radiation panel in each room can meet the formula that Tg,i= Tde,i+K, wherein K is a preset temperature regulation value; and if Tf,i>= Tde,i+0.5 DEG C, K=0.5 DEG C, and if Tf,i< Tde,i+0.5 DEG C, K=0.06*Te,i. By means of the control method and system of the radiant cooling air-conditioning system, on the premise of guaranteeing the cold supply quantity of the radiant cooling rooms, the hidden trouble of condensation of the cold radiation panels is effectively eradicated, and therefore the problem that application and popularization of radiant cooling are limited is solved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method and system for a radiant cooling air conditioning system. Background technique [0002] The radiant cooling air-conditioning system has the advantages of high comfort and saving building installation space, and is an energy-saving and quiet air-conditioning system. For the traditional radiant cooling air conditioning system, when the water supply temperature is low or the indoor humidity is high, condensation is prone to appear on the surface of the radiant panel. In addition, when the doors and windows are opened, hot and humid air from the outside enters, and condensation is also likely to occur when it comes into contact with the low-temperature radiant panels. Condensation problems greatly limit the market for radiant cooling air conditioning systems. Therefore, how to effectively solve the problem of condensation on the surface of radiant panels i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/83F24F11/85F24F2110/00F24F2110/10
Inventor 欧阳光曹浩黄娟钟文朝
Owner GREE ELECTRIC APPLIANCES INC
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