CN202350247U - Control system of VAV air conditioner enthalpy value measurement charging device - Google Patents
Control system of VAV air conditioner enthalpy value measurement charging device Download PDFInfo
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- CN202350247U CN202350247U CN2011204820285U CN201120482028U CN202350247U CN 202350247 U CN202350247 U CN 202350247U CN 2011204820285 U CN2011204820285 U CN 2011204820285U CN 201120482028 U CN201120482028 U CN 201120482028U CN 202350247 U CN202350247 U CN 202350247U
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- 238000005259 measurement Methods 0.000 title abstract description 5
- 238000004378 air conditioning Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A control system of a VAV air conditioner enthalpy value measurement charging device comprises a data acquisition module, an enthalpy value calculation module, a central control module, an air volume control module, a cost accounting module, a storage module and an acquisition instruction module. The utility model discloses VAV air conditioner enthalpy value measurement charging device control system has reduced the sensor quantity that needs the installation, need not increase the expense almost, practices thrift a large amount of sensors, and economic effect is good, and measuring error is also in the within range of allowwing.
Description
Technical field
The utility model relates to the measurement charging apparatus control system of heating and refrigeration equipment, specifically, relates to a kind of method that adopts enthalpy metering to the charge control system of measuring and calculating device of VAV full blast amount air-conditioning.
Background technology
At present; Flow sensor that the charging of VAV air-conditioning is normally installed in the water inlet of AHU air processing machine and temperature sensor; The supply and return water temperature that flow that provides according to flow sensor and pairing temperature sensor provide; And the time of current warp, can calculate the cold that air processing machine consumes.Account for the ratio of total blast volume according to each VAV BOX at the accumulation air quantity of time internal consumption of agreement then, calculate the cold that the user consumes, thereby calculate user's expense.Its formula is following:
Expense=VAV BOX that VAV BOX consumes cold consumes cold * air-conditioning system cold unit price
Though this mode can approximate calculation go out customer charge, it is inaccurate to charge, and charges to have major defect in theory.Because the VAV air-conditioning system comprises air-supply, return air, air draft.Wherein the existence of return air is one of key factor of air conditioner energy saving.And original charging method is not considered return air.With the summer condition is example, if outdoor new wind-warm syndrome degree is 35 ℃, and relative humidity 80%; And indoor air temperature is 26 ℃, relative humidity 50%, and the air-conditioning wind pushing temperature is 15 ℃; Relative humidity 30%, then the return air cold that reaches the required consumption of air-supply humiture through the air-treatment unit reaches the cold of the required consumption of air-supply humiture much smaller than new wind through the air-treatment unit, and the return air amount is big more in the air-conditioning air-supply; Needed cold is more little, and is energy-conservation just obvious more.For VAV air-conditioning household cost allocation, even user's air output is identical, but the return air amount is different, and the user is just inequality to the consumption of cold so, and obviously, the cold that the user that the return air amount is many consumes is few, and required expense is low.Not considering the factor of return air during if charge, obviously is unfair concerning the user, also can encourage the waste of the energy simultaneously, and the energy-conservation original intention of this and VAV air-conditioning is contrary.
The utility model content
The utility model to existing VAV air conditioning charging have major defect in theory, the deficiency such as inaccurate of chargeing, a kind of novel VAV air conditioning charging apparatus control system that adopts the enthalpy computational methods to charge and measure is provided.
The utility model VAV air-conditioning enthalpy is measured the charging apparatus control system; Comprise data acquisition module, enthalpy computing module, central control module, air quantity control module, expense accounting module, memory module and acquisition instructions module; Described data acquisition module comprises new wind data acquisition module, air-supply data acquisition module and return air data acquisition module; These three modules are gathered temperature, humidity, the pressure data signal of new wind, air-supply and return air respectively, and these three data acquisition modules are connected with return air enthalpy computing module with the new wind enthalpy computing module of enthalpy computing module, air-supply enthalpy computing module respectively, and the enthalpy computing module is connected with central control module; Receive the data result of enthalpy computing module by central control module; Central control module is connected with air quantity adjustment module, expense computing module and instruction transceiver module respectively again, regulates the required resh air requirement of user and user's return air amount by the air quantity adjustment module according to the instruction of central control module, simultaneously; The expense computing module is according to instruction; Calculate the expense of user's institute's consumed energy and generation, in addition, whenever sent instruction by central control module to the instruction transceiver module at a distance from 15 minutes; And send instruction by the instruction transceiver module that is connected with data acquisition module, carry out data acquisition once more.
The utility model VAV air-conditioning enthalpy is measured the charging apparatus control system, takes into full account the characteristics of VAV air-conditioning, calculates the energy that the user consumes according to the enthalpy of new wind, air-supply, return air, for accurate billing theoretical foundation is provided.Can whether come selection flexibly accurately to measure or more accurate and economic measurement according to the installation of temperature sensor, humidity sensor, reduce the number of sensors that needs installation.
The VAV air-conditioning system has been installed temperature sensor, humidity sensor, pressure sensor, air velocity transducer in total backwind tube, use the increase expense so hardly.This mode has also been considered the factor of return air, but is not the parameter of each user's return air, and error is bigger in metering, but still better than the metering method of not considering air-conditioning return air.
Can select another kind of method according to economy and practicality, only on user's backwind tube, air velocity transducer is installed, both can satisfy the basic demand that VAV charges, can practice thrift a large amount of sensors again, good economical benefit, measure error are also in allowed limits.
Description of drawings
Accompanying drawing 1 is the blocki diagram that the utility model VAV air-conditioning enthalpy is measured the charging apparatus control system.
The specific embodiment
The utility model VAV air-conditioning enthalpy is measured the charging apparatus control system; As shown in Figure 1; Comprise data acquisition module, enthalpy computing module, central control module, air quantity control module, expense accounting module, memory module and acquisition instructions module, described data acquisition module comprises new wind data acquisition module, air-supply data acquisition module and return air data acquisition module, and these three modules are gathered temperature, humidity, the pressure data signal of new wind, air-supply and return air respectively; And these three data acquisition modules are connected with return air enthalpy computing module with new wind enthalpy computing module, the air-supply enthalpy computing module of enthalpy computing module respectively; The enthalpy computing module is connected with central control module, and by the data result of central control module reception enthalpy computing module, central control module is connected with air quantity adjustment module, expense computing module and instruction transceiver module respectively again; Regulate the required resh air requirement of user and user's return air amount by the air quantity adjustment module according to the instruction of central control module; Simultaneously, the expense computing module calculates the expense of user's institute's consumed energy and generation according to instruction; In addition; Whenever sent instruction by central control module to the instruction transceiver module at a distance from 15 minutes, and send instruction, carry out data acquisition once more by the instruction transceiver module that is connected with data acquisition module.
The enthalpy meter charging method of VAV air-conditioning may further comprise the steps,
1) definite respectively enthalpy H that blows
1, room return air enthalpy H
2And the enthalpy H of outdoor air
3
2) measure the air quantity Q that sends into the room respectively
1, return air amount Q
2, resh air requirement Q
3
3) according to above-mentioned numerical computations go out the Subscriber Unit time (minute) energy consumption be:
W
j=(H
3-H
1) * Q
3* ρ+(H
2-H
1) * Q
2* ρ, wherein ρ is an atmospheric density;
4) because the enthalpy of enthalpy, air-supply and the return air of outdoor new wind is all changing,,, whenever gathered once at a distance from 15 minutes because the variation of humiture, atmospheric pressure is a slower process so need continuous acquisition enthalpy everywhere;
Energy consumption then hourly can be counted:
The energy consumption of user every day can be counted:
.
Claims (1)
1. a VAV air-conditioning enthalpy is measured the charging apparatus control system; It is characterized in that; Comprise data acquisition module, enthalpy computing module, central control module, air quantity control module, expense accounting module, memory module and acquisition instructions module, described data acquisition module comprises new wind data acquisition module, air-supply data acquisition module and return air data acquisition module, and these three modules are gathered temperature, humidity, the pressure data signal of new wind, air-supply and return air respectively; And these three data acquisition modules are connected with return air enthalpy computing module with new wind enthalpy computing module, the air-supply enthalpy computing module of enthalpy computing module respectively; The enthalpy computing module is connected with central control module, and by the data result of central control module reception enthalpy computing module, central control module is connected with air quantity adjustment module, expense computing module and instruction transceiver module respectively again; Regulate the required resh air requirement of user and user's return air amount by the air quantity adjustment module according to the instruction of central control module; Simultaneously, the expense computing module calculates the expense of user's institute's consumed energy and generation according to instruction; In addition; Whenever sent instruction by central control module to the instruction transceiver module at a distance from 15 minutes, and send instruction, carry out data acquisition once more by the instruction transceiver module that is connected with data acquisition module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204820285U CN202350247U (en) | 2011-11-29 | 2011-11-29 | Control system of VAV air conditioner enthalpy value measurement charging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204820285U CN202350247U (en) | 2011-11-29 | 2011-11-29 | Control system of VAV air conditioner enthalpy value measurement charging device |
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| Publication Number | Publication Date |
|---|---|
| CN202350247U true CN202350247U (en) | 2012-07-25 |
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|---|---|---|---|
| CN2011204820285U Expired - Fee Related CN202350247U (en) | 2011-11-29 | 2011-11-29 | Control system of VAV air conditioner enthalpy value measurement charging device |
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| Country | Link |
|---|---|
| CN (1) | CN202350247U (en) |
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2011
- 2011-11-29 CN CN2011204820285U patent/CN202350247U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20121129 |