CN207797333U - A kind of air-conditioning system controlling air-out humidity by dew-point temperature - Google Patents
A kind of air-conditioning system controlling air-out humidity by dew-point temperature Download PDFInfo
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- CN207797333U CN207797333U CN201820116694.9U CN201820116694U CN207797333U CN 207797333 U CN207797333 U CN 207797333U CN 201820116694 U CN201820116694 U CN 201820116694U CN 207797333 U CN207797333 U CN 207797333U
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Abstract
A kind of air-conditioning system controlling air-out humidity by dew-point temperature,It is related to air-conditioning technical field,Its structure includes compressor,Condenser,Outdoor fan,Outdoor environment temperature sensor,Controller,Air-conditioning return air temperature sensor,Air-conditioning return air humidity sensor,Level-one evaporator,Indoor fan,Air conditioning exhausting temperature sensor,Humidifier,Secondary evaporimeter,Level-one flow control valve,Two_stage flow regulating valve,The compressor,Condenser,Level-one evaporator,Secondary evaporimeter,Level-one flow control valve,Two_stage flow regulating valve forms compressor cooling and dehumidification system,The compressor,Outdoor fan,Outdoor environment temperature sensor,Air-conditioning return air temperature sensor,Air-conditioning return air humidity sensor,Air conditioning exhausting temperature sensor,Humidifier,Level-one flow control valve,Two_stage flow regulating valve is electrically connected with the controller respectively,And it is controlled by it.
Description
Technical field
The utility model is related to air-conditioning technical fields, more particularly to a kind of sky controlling air-out humidity by dew-point temperature
Adjusting system.
Background technology
With new standard GB/T 50174-2017《Data center design specification》Publication, wherein air conditioner in machine room temperature,
Humid control target is changed from room Temperature and Humidity Control to cabinet air inlet humiture, the variation of these temperature humidities, it will influence
Change Future Data center air-conditioner system architecture and control with change.But current blasting humidity control technology application Shortcomings,
How the humidification demand of accurate judgement system, dehumidification and control humidifier, compressor reasonably puts into operation, be therein
One of problem.
Currently, controlling humidifier and start/stop of compressor and operational mode using outlet air Temperature and Humidity Control mode, usually
It is controlled according to the deviation of the air-out humidity relative humidity that detects of probe and setting relative humidity, such as：When outlet air is relatively wet
When spending detected value≤setting value -10%, humidifying mode is run, humidifier is opened, when air-out relative humidity detected value ＞ setting values -
When 5%, humidifying mode is exited, stops humidifier；When air-out relative humidity detected value >=setting value+15%, into dehumidifying mould
Formula, EC wind turbines drop wind speed and open compressor exits dehumidification mode when air-out relative humidity detected value ＜ setting value+5%,
EC wind turbines are pressed corresponding rotating speed and are run, and compressor is closed.
Using prior art, air-out humidity fluctuation is big, is unable to judge accurately best operational mode, especially low negative
In the case of lotus, such as：Outlet air humiture setting value is 22 DEG C/50%, if compressor does not start also, then and it is warm and humid before and after heat exchanger
It spends consistent, it is assumed that it is 37 DEG C/30%, water capacity is 11.783g/kg dry air, after compressor just startup soon, outlet air dry bulb temperature
11~15 DEG C lower than return air dry bulb temperature or so of degree, air inlet/outlet water capacity is basically unchanged at this time, then outlet air humiture substantially 23
DEG C/67%, since load is not high, unit can at this time be possible to occur more dehumidifying according to temperature and humidity value automatically into dehumidification mode,
Higher situation, the relative humidity after a period of time in computer room are less than setting value, need to open humidifier humidifies air-out humidity instead.
Dehumidifying and humidification are all the processes of a highly energy-consuming, and therefore, there is an urgent need for research and develop a kind of method for low dehumidifying and humidification of consuming energy.
Utility model content
The purpose of this utility model is that avoiding shortcoming in the prior art and providing one kind by dew-point temperature control
The air-conditioning system for making wind moisture can be supplied to software engineer and be programmed, and then can realize that energy consumption is low.
The purpose of this utility model is achieved through the following technical solutions：
A kind of air-conditioning system controlling air-out humidity by dew-point temperature, including compressor, condenser, outdoor wind are provided
Machine, outdoor environment temperature sensor, controller, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor, level-one evaporation
Device, indoor fan, air conditioning exhausting temperature sensor, humidifier, secondary evaporimeter, level-one flow control valve, two_stage flow are adjusted
Valve,
The compressor, condenser, level-one evaporator, secondary evaporimeter, level-one flow control valve, two_stage flow regulating valve
Form compressor cooling and dehumidification system, the compressor, outdoor fan, outdoor environment temperature sensor, air-conditioning return air temperature
Sensor, air-conditioning return air humidity sensor, air conditioning exhausting temperature sensor, humidifier, level-one flow control valve, two_stage flow tune
Section valve is electrically connected with the controller respectively, and is controlled by it.
Wherein, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor are mounted on secondary evaporimeter inlet side.
Wherein, air conditioning exhausting temperature sensor is mounted on level-one evaporator air side.
Wherein, level-one evaporator is mounted on the air side of secondary evaporimeter.
The beneficial effects of the utility model：
The utility model it is a kind of by dew-point temperature control air-out humidity air-conditioning system, can be supplied to software engineer into
Row programming, and then by removing electric heater, evaporator is divided into two level, increases a flow control valve, when dehumidification mode, wind turbine
Rotating speed is constant, carries out thermal compensation to the Cryogenic air after dehumidifying by level-one evaporator using compressor heat exhaust, can reduce
Cost reduces air conditioning energy consumption, and Temperature and Humidity Control is more stable in computer room.
Description of the drawings
Utility model is described further using attached drawing, but the embodiment in attached drawing does not constitute and appoints to the utility model
What is limited, for those of ordinary skill in the art, without creative efforts, can also be according to the following drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of air-conditioning system controlling air-out humidity by dew-point temperature of the utility model.
Include in figure：
Compressor 1, condenser 2, outdoor fan 3, outdoor environment temperature sensor 4, controller 5, air-conditioning return air temperature pass
Sensor 6, air-conditioning return air humidity sensor 7, level-one evaporator 8, indoor fan 9, air conditioning exhausting temperature sensor 10, humidifier
11, secondary evaporimeter 12, level-one flow control valve 13, two_stage flow regulating valve 14.
Specific implementation mode
The utility model is further described with the following Examples.
A kind of air-conditioning system controlling air-out humidity by dew-point temperature of the present embodiment, as shown in Figure 1, including compressor
1, condenser 2, outdoor fan 3, outdoor environment temperature sensor 4, controller 5, air-conditioning return air temperature sensor 6, air-conditioning return air
Humidity sensor 7, level-one evaporator 8, indoor fan 9, air conditioning exhausting temperature sensor 10, humidifier 11, secondary evaporimeter 12,
Level-one flow control valve 13, two_stage flow regulating valve 14,
The compressor 1, condenser 2, level-one evaporator 8, secondary evaporimeter 12, level-one flow control valve 13, secondary streams
Adjustable valve 14 forms the refrigeration of compressor 1 and dehumidification system, and the humidifier 11 is humidification system；The compressor 1, outdoor wind
Machine 3, outdoor environment temperature sensor 4, air-conditioning return air temperature sensor 6, air-conditioning return air humidity sensor 7, air conditioning exhausting temperature
Sensor 10, humidifier 11, level-one flow control valve 13, two_stage flow regulating valve 14 are electrically connected with controller 5 respectively, and by it
Control.
Wherein, air-conditioning return air temperature sensor 6, air-conditioning return air humidity sensor 7 are mounted on 12 inlet side of secondary evaporimeter,
Be respectively used to detect it is coming from the closing passage of heat or the big air-conditioning of computer room, without conditioned air temperature, humidity.
Wherein, air conditioning exhausting temperature sensor 10 is mounted on 8 air side of level-one evaporator, for detecting one by air-conditioning
Grade evaporator 8 and treated the air themperature of secondary evaporimeter 12.
Wherein, level-one evaporator 8 is mounted on the air side of secondary evaporimeter 12, the higher sky of humidity without air-conditioning processing
After 12 cool-down dehumidification of secondary evaporimeter, since temperature is too low, leaving air temp sets requirement is not achieved in gas, need to pass through level-one
Evaporator 8 makes final leaving air temp meet setting using 1 heat extraction of compressor to air of the heating from secondary evaporimeter 12
It is required that；If this effect is then not achieved in the location swap of level-one evaporator 8 and secondary evaporimeter 12.
A kind of air-conditioning system controlling air-out humidity by dew-point temperature of the present embodiment, can be supplied to software engineer's progress
Programming, by removing electric heater, evaporator is divided into two level, increases a flow control valve, and when dehumidification mode, rotation speed of fan is not
Become, thermal compensation carried out to the Cryogenic air after dehumidifying by level-one evaporator 8 using 1 heat exhaust of compressor, cost can be reduced,
Air conditioning energy consumption is reduced, Temperature and Humidity Control is more stable in computer room.
A kind of control method of air-conditioning system controlling air-out humidity by dew-point temperature of the present embodiment, first passes through setting
Leaving air temp Tos, setting air-out humidity Hs, calculate outlet air dew-point temperature setting value Tds；
Wherein：
Return air temperature Til, the air-conditioning return air humidity sensor 7 detected again by air-conditioning return air temperature sensor 6 detects
The return air humidity Hil arrived, calculates return air dew-point temperature Tdi；
Wherein：
In above-mentioned formula, a, b are coefficient, and preferred coefficient selected value is：When 0 DEG C of t ＞, a=7.5, b=237.3 are taken；t
At≤0 DEG C, a=9.5, b=265.5 are taken.
Such as Tos=22 DEG C of the leaving air temp set, the air-out humidity Hs=50% of setting, then：A=7.5, b=
237.3, it is calculated
Assuming that：
Til=35 DEG C of the return air temperature detected, the return air humidity Hil=30% detected, cryogenic temperature return difference value T β
=0.5 DEG C, Tc=2 DEG C of cryogenic temperature control accuracy, then：It is calculated：
Finally by the big subtotal for comparing outlet air dew-point temperature setting value Tds and return air dew-point temperature detection calculated value Tdi
Humidification demand, dehumidification are calculated, size runs corresponding pattern to air-conditioner set according to demand, converts control air-out humidity to
Return air dew point controls, indirect control air-out humidity,
Wherein,
Tds is air-supply dew-point temperature setup algorithm value, and Tdi is return air dew-point temperature calculating value, and T β are cryogenic temperature return difference
Value, Tc are cryogenic temperature control accuracy.
Wherein, specific control logic is：
(1) control logic is humidified：
I. as system humidification demand ＜ 0%, system exits humidifying mode, closes humidifier 11；
Ii. as 0%≤system humidification capability demand ＜ 100%, system maintains current state；
Iii. when system humidifies demand >=100%, system enters humidifying mode, opens humidifier 11；
(2) Dehumidification controlling logic：
I. as system dehumidification capability control demand ＜ 0%, system exits dehumidifying；
Ii. as 0%≤system dehumidification capability control demand ＜ 100%, unit maintains current operating conditions；
Iii. when system dehumidification demand >=100%, system enters dehumidification mode, and the operation of 9 rated speed of indoor fan is opened
Open compressor 1.
Wherein, the carrying out practically mode of the parts of the control system is：
1) refrigeration mode：
When system operation refrigeration mode, indoor fan 9 is run by rated speed, is saved by level-one flow control valve 13
Decrease temperature and pressure is flowed, two_stage flow regulating valve 14 is opened completely, does not play throttling action, and compressor 1 opens operation, is carried out refrigeration and is followed
Ring；
2) dehumidification mode：
When system operation dehumidification mode, indoor fan 9 is run by rated speed, and level-one flow control valve 13 is beaten completely
It opens, does not play throttling action, two_stage flow regulating valve 14 carries out throttling decrease temperature and pressure, and compressor 1 opens operation, carrys out condenser 2
High temperature and pressure liquid refrigerant flow into level-one evaporator 8, then flow into secondary evaporimeter 12, indoor return air passes through secondary evaporimeter 12
When heated by cool-down dehumidification, then by level-one evaporator 8, carry out thermal compensation；
3) humidifying mode：
When system operation humidifying mode, indoor fan 9 is run by rated speed, and humidifier 11 is opened, and is humidified.
It is calculated by above data：
Due to dehumidification>100%, at this time system enter dehumidification mode, each parts come according to the requirement of dehumidification mode
Operation.
A kind of control method of the air-conditioning system that air-out humidity is controlled by dew-point temperature of the present embodiment,
(1) different humidification demands, dehumidification Rule of judgment are combined, can more accurately judge compressor 1, humidifier 11
The opportunity of input so that humidification capability, dehumidifying effect and practical humidity load are consistent, and solve existing air-out humidity control technology
Deficiency.
(2) double effect evaporator is used, when dehumidification mode, first evaporator 8 is used when the subcooler of condenser 2, to coming
Thermal compensation is carried out from the Cryogenic air after the dehumidifying of second level evaporator 12, takes full advantage of 1 heat exhaust of compressor, is saved often
The electric heater power consumption of rule.
(3) rotating speed operation need not drop in indoor fan 9, and air supplying distance and wind pushing temperature are unaffected, may make Indoor Temperature
Humid control is more stable, system operation safety and reliability
(4) two flow control valves are added, refrigeration and dehumidifying are realized by automatically adjusting cold medium flux combination evaporator
Wait the energy saving of operating modes.
Finally it should be noted that above example is only to illustrate the technical solution of the utility model, rather than to this reality
With the limitation of novel protected range, although being explained in detail to the utility model with reference to preferred embodiment, this field it is general
Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the utility model, without departing from this
The spirit and scope of utility model technical solution.
Claims (4)
1. a kind of air-conditioning system controlling air-out humidity by dew-point temperature, it is characterised in that：Including compressor, condenser, room
Outer wind turbine, outdoor environment temperature sensor, controller, air-conditioning return air temperature sensor, air-conditioning return air humidity sensor, level-one are steamed
Send out device, indoor fan, air conditioning exhausting temperature sensor, humidifier, secondary evaporimeter, level-one flow control valve, two_stage flow tune
Valve is saved,
The compressor, condenser, level-one evaporator, secondary evaporimeter, level-one flow control valve, two_stage flow regulating valve composition
Compressor cooling and dehumidification system, the compressor, outdoor fan, outdoor environment temperature sensor, air-conditioning return air temperature sensing
Device, air-conditioning return air humidity sensor, air conditioning exhausting temperature sensor, humidifier, level-one flow control valve, two_stage flow regulating valve
It is electrically connected with the controller, and is controlled by it respectively.
2. a kind of air-conditioning system controlling air-out humidity by dew-point temperature as described in claim 1, it is characterised in that：Air-conditioning returns
Air temperature sensor, air-conditioning return air humidity sensor are mounted on secondary evaporimeter inlet side.
3. a kind of air-conditioning system controlling air-out humidity by dew-point temperature as described in claim 1, it is characterised in that：Air-conditioning goes out
Air temperature sensor is mounted on level-one evaporator air side.
4. a kind of air-conditioning system controlling air-out humidity by dew-point temperature as described in claim 1, it is characterised in that：Level-one is steamed
Send out the air side that device is mounted on secondary evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820116694.9U CN207797333U (en) | 2018-01-23 | 2018-01-23 | A kind of air-conditioning system controlling air-out humidity by dew-point temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820116694.9U CN207797333U (en) | 2018-01-23 | 2018-01-23 | A kind of air-conditioning system controlling air-out humidity by dew-point temperature |
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| CN207797333U true CN207797333U (en) | 2018-08-31 |
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ID=63270042
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131804A (en) * | 2018-01-23 | 2018-06-08 | 广东海悟科技有限公司 | A kind of air-conditioning system and its control method that air-out humidity is controlled by dew-point temperature |
| CN115523642A (en) * | 2022-09-19 | 2022-12-27 | 珠海格力电器股份有限公司 | Control method, device and system of air conditioner |
-
2018
- 2018-01-23 CN CN201820116694.9U patent/CN207797333U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131804A (en) * | 2018-01-23 | 2018-06-08 | 广东海悟科技有限公司 | A kind of air-conditioning system and its control method that air-out humidity is controlled by dew-point temperature |
| CN108131804B (en) * | 2018-01-23 | 2023-11-24 | 广东海悟科技有限公司 | Air conditioning system capable of controlling air outlet humidity through dew point temperature and control method thereof |
| CN115523642A (en) * | 2022-09-19 | 2022-12-27 | 珠海格力电器股份有限公司 | Control method, device and system of air conditioner |
| CN115523642B (en) * | 2022-09-19 | 2023-10-27 | 珠海格力电器股份有限公司 | Control method, device and system of air conditioner |
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