CN202350799U - VAV (Variable Air Volume) air conditioner enthalpy value measuring and charging device - Google Patents
VAV (Variable Air Volume) air conditioner enthalpy value measuring and charging device Download PDFInfo
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- CN202350799U CN202350799U CN2011204820321U CN201120482032U CN202350799U CN 202350799 U CN202350799 U CN 202350799U CN 2011204820321 U CN2011204820321 U CN 2011204820321U CN 201120482032 U CN201120482032 U CN 201120482032U CN 202350799 U CN202350799 U CN 202350799U
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- air
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- enthalpy
- vav
- temperature sensor
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Abstract
The utility model provides a VAV (Variable Air Volume) air conditioner enthalpy value measuring and charging device, which comprises a supply air enthalpy value measuring system, a return air enthalpy value measuring system and an outdoor fresh air enthalpy value measuring system, wherein each of the supply air enthalpy value measuring system, the return air enthalpy value measuring system and the outdoor fresh air enthalpy value measuring system comprises a temperature sensor, a humidity sensor, a pressure sensor and an air velocity sensor. According to the utility model, by sufficiently taking characteristics of a VAV air conditioner into consideration, the energy consumed by a user is figured out according to the enthalpy values of the fresh air, the supply air and the return air. Accurate measurement or more accurate and economic measurement can be flexibly selected according to whether the temperature sensor and the humidity sensor are mounted or not; therefore, the number of the sensors required to be mounted is reduced, almost no increase is caused in cost, a large quantity of sensors are eliminated, the good economic effect is obtained and the measuring error also falls within an allowed range.
Description
Technical field
The utility model relates to a kind of message accounting, specifically, relates to the device that a kind of method that adopts enthalpy to measure is charged and calculated 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 treatment 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 device that adopts the enthalpy computing method to charge and measure is provided.
The utility model VAV air-conditioning enthalpy is measured message accounting; Comprise air-supply enthalpy measuring system, return air enthalpy measuring system and outdoor new wind enthalpy measuring system, described air-supply enthalpy measuring system, return air enthalpy measuring system and outdoor new wind enthalpy measuring system constitute by temperature sensor, humidity sensor, pressure transducer, air velocity transducer.
Preferably, temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system are installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; Temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of return air enthalpy measuring system is installed in each household return air inlet place.
Preferably, return air enthalpy measuring system temperature sensor, humidity sensor, pressure transducer are installed in user's backwind tube place, and air velocity transducer is installed in the straight tube place of user's backwind tube.
Preferably, temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system are installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; Temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of return air enthalpy measuring system are installed among the return air house steward.
Preferably, temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system are installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; The air velocity transducer of return air enthalpy measuring system is installed in user's return side, and temperature sensor, humidity sensor, pressure transducer are installed among the return air house steward.
The utility model takes into full account the characteristics of VAV air-conditioning, calculates the energy of user's consumption according to the enthalpy of new wind, air-supply, return air.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 transducer, 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, measuring error are also in allowed limits.
Description of drawings
Accompanying drawing 1 is the structured flowchart that the utility model VAV air-conditioning enthalpy is measured message accounting embodiment one;
Accompanying drawing 2 is the structured flowchart that the utility model VAV air-conditioning enthalpy is measured message accounting embodiment two;
Accompanying drawing 3 is the structured flowchart that the utility model VAV air-conditioning enthalpy is measured message accounting embodiment three.
Embodiment
The utility model VAV air-conditioning enthalpy is measured message accounting; Shown in Fig. 1 to 3, comprise air-supply enthalpy measuring system, return air enthalpy measuring system and outdoor new wind enthalpy measuring system, described air-supply enthalpy measuring system, return air enthalpy measuring system and outdoor new wind enthalpy measuring system constitute by temperature sensor, humidity sensor, pressure transducer, air velocity transducer; T is a temperature sensor among the figure; W is a humidity sensor, and P is a pressure transducer, and S is an air velocity transducer.
Among the embodiment one, temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system is installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; Temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of return air enthalpy measuring system is installed in the straight tube place of user's backwind tube.
Among the embodiment two, the temperature sensor of return air enthalpy measuring system, humidity sensor, pressure transducer, air velocity transducer also can be installed among the return air house steward.
Among the embodiment three, the air velocity transducer of return air enthalpy measuring system is installed in user's return side, and temperature sensor, humidity sensor, pressure transducer are installed among the return air house steward.
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 evaluation 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 (5)
1. a VAV air-conditioning enthalpy is measured message accounting; It is characterized in that: comprise air-supply enthalpy measuring system, return air enthalpy measuring system and outdoor new wind enthalpy measuring system, described air-supply enthalpy measuring system, return air enthalpy measuring system and outdoor new wind enthalpy measuring system constitute by temperature sensor, humidity sensor, pressure transducer, air velocity transducer.
2. VAV air-conditioning enthalpy according to claim 1 is measured message accounting, it is characterized in that: temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system is installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; Temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of return air enthalpy measuring system is installed in each household return air inlet place.
3. VAV air-conditioning enthalpy according to claim 2 is measured message accounting; It is characterized in that: return air enthalpy measuring system temperature sensor, humidity sensor, pressure transducer are installed in user's backwind tube place, and air velocity transducer is installed in the straight tube place of user's backwind tube.
4. VAV air-conditioning enthalpy according to claim 1 is measured message accounting, it is characterized in that: temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system is installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; Temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of return air enthalpy measuring system are installed among the return air house steward.
5. VAV air-conditioning enthalpy according to claim 1 is measured message accounting, it is characterized in that: temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of air-supply enthalpy measuring system is installed in the blower fan air outlet to 2/3 terminal place of system; After temperature sensor, humidity sensor, pressure transducer, the air velocity transducer of outdoor new wind enthalpy measuring system is installed in the new air-valve of VAV; The air velocity transducer of return air enthalpy measuring system is installed in user's return side, and temperature sensor, humidity sensor, pressure transducer are installed among the return air house steward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204820321U CN202350799U (en) | 2011-11-29 | 2011-11-29 | VAV (Variable Air Volume) air conditioner enthalpy value measuring and charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204820321U CN202350799U (en) | 2011-11-29 | 2011-11-29 | VAV (Variable Air Volume) air conditioner enthalpy value measuring and charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350799U true CN202350799U (en) | 2012-07-25 |
Family
ID=46539797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204820321U Expired - Fee Related CN202350799U (en) | 2011-11-29 | 2011-11-29 | VAV (Variable Air Volume) air conditioner enthalpy value measuring and charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202350799U (en) |
-
2011
- 2011-11-29 CN CN2011204820321U patent/CN202350799U/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 |