JP5306961B2 - Air conditioner and temperature / humidity controller for air conditioner - Google Patents

Description

  The present invention relates to an air conditioner and an air conditioning temperature / humidity control device that feeds outside air taken in as conditioned air having a preset temperature / humidity. It is suitable for use when supplying conditioned air to a painting booth or the like.

FIG. 5 is an air state diagram showing a temperature and humidity change when a conventional general air conditioner and its temperature and humidity control are performed.
Air conditioner 51, a flow path leading to the air-conditioned air blow-out port 3 formed at the other end from the outside air inlet 2 formed at one end, the temperature for generating a preset air-conditioned air target state point P ₄ Humidity adjusters 4 are arranged, and the heating capacity / humidification capacity is controlled by the temperature / humidity control device 52, and the outside air is heated / humidified to obtain conditioned air at the target state point.

The temperature / humidity adjuster includes a main heating device A ₁ called a preheater with variable heating capacity that heats the outside air to a predetermined temperature, and a washer with variable humidification capacity that humidifies the air that has passed through the main heating device A ₁ in an enthalpy manner. referred to as adiabatic humidifier a _2, together with an auxiliary heating device a ₄ called auxiliary humidifier a ₃ and Rehita such direct steam to humidify / heating as necessary air passing through the adiabatic humidifier a ₂ is disposed and In general, the blower F is arranged at the air-conditioning air outlet, and the order of the auxiliary humidifier A ₃ and the auxiliary heater A ₄ is changed as necessary. cooling device A ₅ is arranged as necessary (see Patent Document 1).

Here, when installed from the outside air inlet 2 to the air-conditioned air outlet 3 of the air conditioner 51 in the order of the main heating device A ₁ -adiabatic humidification device A ₂ -auxiliary humidification device A ₃ -auxiliary heating device A ₄ , as shown in 6, the main heating outside air by the device a ₁ is heated to a predetermined temperature along the heating lines L ₁ equal absolute humidity through the state point P _0, the air passing through the main heating apparatus a ₁ is adiabatic humidification The device A _{2 is} humidified to a predetermined humidity along the isoenthalpy humidification line L ₂ passing through the state point P ₁ by the device A ₂ , and the air that has passed through the heat insulation humidifier A ₂ passes through the state point P ₂ by the auxiliary humidifier A _3. The air that has been humidified to the absolute humidity H ₄ at the target state point P ₄ along the auxiliary humidification line L ₃ having the same inclination as the specific enthalpy of the steam, and has passed through the auxiliary humidifier A ₃ is set at the target state point P by the auxiliary heating device A _4. etc. absolute humidity of the pressure through the ₄ Target state point P ₄ along line L _{4 (e.g.} winter target state point: Temperature 19 ± 1 ° C., absolute humidity of 0.0095kg / kg (RH 70 ± 5% RH)) is adapted to be heated to.

In this case, the heating / humidifying line _L 1 ~L ₄ of the temperature and humidity regulator _{4 (A} 1 ~A ₄₎ is the lowest temperature expected, ambient air target state point of winter extreme conditions point _{P C} of the lowest humidity it is set so as to be able to heat / humidify to P _4.

For example, when the outside air state point P ₀ in winter is the extreme state point P _C (−2 ° C., 0.002 kg / kg (60% RH)), as shown in FIG. ₁ is heated to the state point P ₁ = P _C1 (27 ° C., 0.002 kg / kg (8% RH)) along the heating line L ₁ (L _C1 ), and enthalpy 7.7 kcal / kg with the heat insulating humidifier A ₂ humidifying line _{L 2} state point _{P 2 (16 ℃, 0.0065kg /} kg (RH 55%)) along the humidified up, humidification line of slope equal to the specific enthalpy 650kcal / kg of steam at the auxiliary humidifier _{a 3} L ₃ is humidified to the state point P ₃ (17 ° C., 0.0095 kg / kg (80% RH)), and finally the target state point P ₄ (19 ° C.) along the heating line L ₄ with the auxiliary heating device A _4. , 0.0095 kg / kg (70% RH)), thereby obtaining the conditioned air at the target state point P ₄ .

When the temperature and humidity of the outside air rises and the outside air state point P ₀ becomes P _N (10 ° C., 0.003 kg / kg (40% RH)), the main heating device A ₁ uses the heating line L ₁ (L _N1 ). After heating to the state point P ₁ = P _N1 (26 ° C., 0.003 kg / kg (15% RH)), the state point P along the humidification line L ₂ with the heat insulating humidifier A ₂ is the same as described above. ₂ (16 ° C., 0.0065 kg / kg (55% RH)), with auxiliary humidifier A ₃ along humidification line L ₃ , state point P ₃ (17 ° C., 0.0095 kg / kg (80% RH)) Finally, the auxiliary heating device A _{4 can} heat the target state point P ₄ along the heating line L ₄ to the target state point P ₄ (19 ° C., 0.0095 kg / kg (70% RH)). It may deliver the conditioned air in the state point P _4.

Thus, since the humidified lines L ₂ and L ₃ are set in consideration of the winter extreme conditions point P _C, also the day of ambient temperature and humidity is higher, the same humidification lines L ₂ and configured for winter L ₃ humidifying operation along so that the are performed.

However, in each temperature / humidity adjuster 4 (A _{1 to} A ₄ ), the auxiliary humidifier A ₃ composed of direct steam has the lowest energy efficiency, and if the humidifying lines L ₂ and L ₃ are fixed, since the humidifier a ₃ is always to be operated at maximum capacity, not only increase the running cost, result in waste of energy, thus, contrary to the spirit of reducing emissions to prevent global warming and greenhouse gases.

Japanese Patent No. 3474736

  Therefore, the problem to be solved by the present invention is to not only reduce the running cost by variably controlling the humidification capacity of the auxiliary humidifier with low energy efficiency according to the outside air temperature, but also eliminate waste of energy. It contributes to the prevention of global warming and the reduction of greenhouse gas emissions.

In order to solve this problem, the present invention supplies conditioned air at a preset target state point to a flow path from an outside air inlet formed on one end side to an conditioned air outlet formed on the other end side. As the temperature and humidity regulator to be generated, the main heating device with variable heating capacity that heats the outside air to a predetermined temperature along the heating line of absolute humidity that passes through the state point, and the state point of the air that has passed through the main heating device The adiabatic humidifier with variable humidification capacity that humidifies along the equal enthalpy humidification line that passes through, and the target state point along the humidification line that has the same slope as the specific enthalpy of the steam that passes through the state of the air that has passed through the adiabatic humidifier. An auxiliary humidifier with variable humidification capacity that humidifies to absolute humidity, and an auxiliary heating device with variable heating capacity that heats air that has passed through the auxiliary humidifier to the target state point along the heating line of absolute humidity that passes through the target state point. As well as In the air conditioning apparatus having a temperature and humidity control apparatus for performing these capacity control for each temperature and humidity regulator,
The temperature / humidity control device is connected to a temperature / humidity sensor for detecting a state point of the outside air on the input side, and the humidification line of the heat insulation humidifier is in the range intersecting with the humidification line of the auxiliary humidifier, and the upper limit from the lower limit enthalpy The enthalpy is set to be adjustable up to enthalpy, and is set to a low enthalpy line at a low temperature and a high enthalpy line at a high temperature according to the outside air temperature.

According to the air conditioner of the present invention, the humidification line of the heat insulation humidifier is set to be adjustable from the lower enthalpy to the upper limit enthalpy in a range intersecting with the humidification line of the auxiliary humidifier, and when the outside air temperature is low, the low enthalpy is set. When the outside air temperature is high, it is humidified along the high enthalpy humidity line.
As a result, when the temperature of the outside air state point is low, the enthalpy of the humidity line of the heat insulation humidifier is set low, so that it intersects on the low humidity side of the humidity line of the auxiliary humidifier, and as a result, the auxiliary humidifier The humidification capacity is increased, and the humidity of the target state point is reliably humidified.
In addition, when the temperature of the outside air state point is relatively high, the enthalpy of the humidity line of the heat insulation humidifier is set high, so that it intersects on the high humidity side of the humidity line of the auxiliary humidifier, and as a result, the auxiliary humidifier The humidification capacity of the device is reduced.
Therefore, not only is the running cost reduced, but there is an excellent effect that waste of energy is eliminated, and consequently, global warming can be prevented and greenhouse gas emissions can be reduced.

The schematic block diagram which shows an example of the air conditioning apparatus which concerns on this invention. The air line figure which shows heating / humidification operation by temperature / humidity control. The flowchart which shows the heating / humidification line setting program of a temperature / humidity control apparatus. It is a flowchart which shows the process sequence of each regulator. The schematic block diagram which shows a conventional apparatus. The air line figure which shows the conventional heating / humidification operation.

In this example, the humidification capacity of the auxiliary humidifier with low energy efficiency is variably controlled according to the outside air temperature, so that not only the running cost is reduced, but also waste of energy is eliminated, thereby preventing global warming and greenhouse effect. To help reduce gas emissions,
As a temperature and humidity regulator that generates conditioned air at a preset target state point in the flow path from the outside air inlet formed on one end side to the conditioned air outlet formed on the other end side, the outside air is in that state A main heating device with variable heating capacity that heats up to a certain temperature along a heating line of absolute humidity that passes through the point, and humidification that humidifies the air that has passed through the main heating device along the humidification line of the equal enthalpy passing through that state point A variable-capacity adiabatic humidifier and an auxiliary humidifier with a variable humidity capacity that humidifies the air that has passed through the adiabatic humidifier to the absolute humidity at the target state point along a humidification line that is equal to the specific enthalpy of the vapor passing through that state point. And an auxiliary heating device with variable heating capacity for heating the air that has passed through the auxiliary humidifier to the target state point along the heating line of absolute humidity that passes through the target state point, and the capacity controller of each of these temperature and humidity regulators In the air conditioning apparatus having a temperature and humidity controller for Le,
The temperature / humidity control device is connected to a temperature / humidity sensor that detects a state point of the outside air on the input side, and the humidification line of the heat insulation humidifier is an upper limit from a lower limit enthalpy within a range intersecting with the humidification line of the auxiliary humidifier. The enthalpy is set to be adjustable up to enthalpy, and the enthalpy line is set to low enthalpy at low temperatures and high enthalpy at high temperatures according to the outside air temperature.

FIG. 1 shows an air conditioner 1 according to the present invention, and parts common to FIG.
The air conditioner 1 includes a main heating device A ₁ , an adiabatic humidifier A ₂ , an auxiliary humidifier A _3, and an auxiliary as a temperature / humidity adjuster 4 in a flow path from the outside air inlet 2 to the conditioned air outlet 3. In addition to the heating device A ₄ , a temperature / humidity control device 5 that controls the capacity of each temperature / humidity adjuster 4 is provided.

On the input side, the temperature / humidity control device 5 includes an outside air temperature / humidity sensor S ₀ that detects a state point of the outside air, a main heating air temperature sensor S ₁ that measures the temperature of the air that has passed through the main heating device A ₁ , and adiabatic humidification air temperature sensor S ₂ for measuring the temperature of air passing through the adiabatic humidifier a _2, the air conditioning air temperature and humidity sensor S ₄ for measuring the state point of the air passing through the auxiliary heater a ₄ is connected .
Then, on the output side, and it sets the heating / humidification line of each temperature and humidity regulator 4, controller C ₁ -C ₄ is provided for feedback control of the respective heating capacity / humidifying volume.

The auxiliary heating controller C ₄ is set with a target state point P ₄ (target temperature T ₄ , target humidity H ₄ ) and is set with a heating line L ₄ of equal humidity extending from the low temperature side to the target state point P _4. Thus, feedback control of the heating capacity of the auxiliary heating device A ₄ is performed based on the target temperature T ₄ and the measured temperature MT ₄ of the air-conditioning air temperature / humidity sensor S ₄ .

Auxiliary humidifier controller C _3, together with the auxiliary heating device A ₄ of the heating line L ₄ state point P ₃ of the outlet air of the auxiliary humidifier A ₃ on is set, the ratio of the vapor toward the state point P ₃ in equal enthalpy gradient is set humidifying line L ₃ extending from the low humidity side, the feedback of the humidification capacity of the auxiliary humidifier a ₃ on the basis of the measured humidity MH ₄ of target humidity H ₄ and the air conditioning air temperature-humidity sensor S ₄ Take control.

Adiabatic humidifier controller _{C 2} is humidified line _{L 2} of the adiabatic humidifier _{A 2,} is adjustably set from the lower limit enthalpy _{Q min} to an upper limit enthalpy _{Q max} in a range intersecting the humidifying line _{L 3} of the auxiliary humidifier _{A 3} In addition, the enthalpy line is set to be low enthalpy at low temperatures and high enthalpy at high temperatures according to the outside air temperature.
Specifically, a humidification line L ₂ extending along an isoenthalpy line from the state point P ₁ of the outlet air calculated by the main heating controller C ₁ described later to the high humidity side is set, and the humidification line L ₂ and the set temperature T ₂ of the state point P ₂ located at the intersection of the humidifying line L ₃ of the auxiliary humidifier a _3, based on the measured temperature MT ₂ of the adiabatic humidifier air temperature sensor S ₂ of the humidification capacity of the adiabatic humidifier a ₂ Feedback control is performed.

The main heating controller C ₁ calculates an outlet air state point P ₁ (T ₁ , H ₀ ) based on the outside air state point P ₀ (T ₀ , H ₀ ) measured by the outside air temperature / humidity sensor S ₀ . and heating lines L ₁ of the face such as the absolute humidity from the outside air state point P ₀ to the state point P ₁ is set, the main heater a on the basis of the measured temperature MT ₁ set temperatures T ₁ and the main heating air temperature sensor S ₁ Feedback control of the heating capacity of ₁ is performed.

Incidentally, the set temperature T ₁ of the state point P ₁ of the outlet air is calculated by the following equation.
T ₁ = T _min + αΔT + β (1)
α: Arbitrary constant (about -0.3)
β: Arbitrary constant (about 10)
T _min : temperature on the lower limit enthalpy Qmin line at absolute humidity H ₀ ΔT = T _B −T ₀ (2)
T _B : Arbitrary reference temperature set higher than the winter maximum expected temperature T ₀ : Measurement temperature of the outside air temperature / humidity sensor S ₀

In general, when the enthalpy Q of air is a temperature t and an absolute humidity H,
Q = 0.24T + (597.3 + 0.441T) H [kcal / kg] (3)
Therefore, the temperature T is
T = (Q−597.3H) / (0.24 + 0.441H)
The temperature T _min on the lower limit enthalpy Q _min line at the absolute humidity H ₀ is
T _min = (Q _min −597.3H ₀ ) / (0.24 + 0.441H ₀ ) (4)
It can be expressed as
If T ₁ is calculated based on the equations (1) and (4), the outlet temperature state point P ₁ (temperature T ₁ , absolute humidity H ₀ ) can be obtained.
Accordingly, enthalpy _{Q 2} humidified line _{L 2} which is determined in the adiabatic humidifier controller _{C 2,} from Equation (3),
Q ₂ = 0.24T ₁ + (597.3 + 0.441T ₁ ) H ₀
In is calculated, it will be set according to the temperature difference between the reference temperature T _B and the outside air temperature T ₀ that has been set in advance.

For example, the outside air state point P ₀ is the extreme state point P _{C in} winter (−2 ° C., 0.002 kg / kg (60% RH)), the lower limit enthalpy Q _min = 7.7 kcal / kg, and the reference temperature T _B = 31 If was ° C., a temperature _{T min} of lower enthalpy _{Q min} line in absolute humidity _{H 0} is the equation (3), [Delta] T is the equation (2), the outlet temperature _{T 1} of the main heater _{a 1} has the formula (1 ).
T _min = about 27 ° C
ΔT = 31 − (− 2) = 33 ° C.
T ₁ = T _C1 = 27−0.3 (33) + 10≈27 ° C.
Thus, leading to the main heating controller _{C 1,} state point _{P C (-2 ℃, 0.002kg /} kg (60% RH)) state point _P C1 from (27 ℃, 0.002kg / kg ( RH 14%)) The heating line L ₁ (L _C1 ) is set.
Further, the enthalpy Q _C1 of the state point P ₁ (P _C1 ) is equal to the enthalpy Q _C2 of the state point P ₂ (P _C2 ) because the humidification line L ₂ (L _C2 ) is equal enthalpy, and the equation (3 )Than,
Q _C1 = Q _C2 = 0.24T _C1 + (597.3 + 0.441T _C1 ) H ₀ = 7.7 kcal / kg
In expressed, the adiabatic humidifier controller _{C 2,} humidified operated along the state point _P 1 state from point _{(P C1) P 2 (P} C2) to reach the humidification line _L 2 _{(L C2),} the auxiliary humidifier control in C _3, and thus it is humidified operated along the humidifying line _L 3 extending state point _P 2 from _{(P C2)} of the state point _{P 3 (L C3).}
In this case, the auxiliary humidifier A ₃ is operated with a large capacity according to the length of the humidifying line L ₃ (L _C3 ) from the state point P ₂ (P _C2 ) to the state point P ₃ .

Further, when the temperature and humidity of the outside air rises and the outside air state point P ₀ = P _N (10 ° C., 0.003 kg / kg (40% RH)), ΔT is obtained from the equation (2) by the equation (1). more outlet temperature T ₁ of the main heater a ₁ is calculated.
ΔT = 31− (10) = 21 ° C.
T ₁ = T _N1 = 27−0.3 (21) + 10≈31 ° C.
In this case, in the main heating controller C ₁ , the heating line L ₁ (L _N1 ) from the state point P ₀ (P _N ) to the state point P ₁ = P _N1 (31 ° C., 0.003 kg / kg (11% RH)). ) Is set.
Moreover, enthalpy _{Q N1} state point _{P N1,} since the humidifying line _{L N2} is isenthalpic, equal to enthalpy _{Q N2} state point _{P N2,} the equation (3),
Q _N1 = Q _N2 = 0.24T _N1 +
(597.3 + 0.441T _N1 ) H ₀ = 9.3 kcal / kg
In expressed, the adiabatic humidifier controller _{C 2,} humidified operated along the state point _P 1 _{(P N1)} state from point _P 2 _{(P N2)} to reach the humidification line _L 2 _{(L N2),} auxiliary humidification control in C _3, and thus it is humidified operated along the humidifying line _L 3 extending state point _P 2 from _{(P N2)} to state point _{P 3 (L N3).}
In this case, the capacity of the auxiliary humidifier _{A 3} is operated is narrowed to a small volume corresponding to the length of the humidifying line _L 3 _{(L N3)} extending state point _P 2 from _{(P N2)} to state point _{P 3} .

FIG. 3 is a flowchart showing a heating / humidification line setting program of the temperature / humidity control device 5.
When the air conditioner 1 is started, the program starts to be executed. In step STP1, the target state point P ₄ (target temperature T ₄ , target humidity H ₄ ) and the outlet state point P ₃ (T ₃ , H of the auxiliary humidifier A ₃ ) are started. ₄ ) is read out, and the outside air temperature point P ₀ (T ₀ , H ₀ ) is measured by the outside air temperature / humidity sensor S ₀ in step STP2.
Then, step STP3 below, based on these data, the respective regulator _C 1 -C _4, heating / humidifying line _L 1 ~L ₄ of the temperature and humidity regulator _{4 (A} 1 ~A ₄₎ is set, the based on the measured temperature and humidity temperature and humidity sensor S ₀ to S _4, performs heating / humidification operation.

First, at step STP3, the state point _{P 3} of the heating line _{L 4} of the auxiliary heating device _{A 4} leading to the state point _{P 4} set in the auxiliary heating controller _{C 4,} toward the state point _{P 3} of the specific enthalpy of steam setting the humidifying line L ₃ equal to the slope to the auxiliary humidifier controller C _3.

Then, at step STP4, each time a by the outside air temperature and humidity sensors S ₀ outside air state point P ₀ is detected, to calculate the main heater exit state point P ₁ of the air A _1, state from the outside air state point P ₀ A heating line L ₁ of equal absolute humidity toward the point P ₁ is set in the main heating controller C ₁ and is humidified from the state point P ₁ to the state point P ₂ intersecting the humidification line L ₃ along the isenthalpy line. set the line L ₂ to the adiabatic humidifier controller C _2, the flow returns to step STP2 to shutdown of the air conditioner 1 is confirmed at step STP5, repeat the above steps.

4A to 4D show a processing procedure of each of the adjusters C _{1 to} C ₄ .
The main heating controller _{C 1,} as shown in FIG. 4 (a), reads the temperature _{T 1} of the state point _{P 1} of the heating line _{L 1} at step STP11, the measured temperature of the main heating air temperature sensor _{S 1} at step STP12 MT ₁ is input.
Then, it is compared at step _STP13, back to MT 1 _-T 1 = 0 a left step STP11 maintaining the capacity of the main heating device _{A 1 If,} in insufficient heating if MT 1 _-T 1 <0 Therefore, the capacity is increased in step STP14 and the process returns to step STP11. If MT ₁ -T ₁ > 0, the heating is overheated, so that the capacity is decreased in step STP15 and the process returns to step STP11. The feedback control of the capacity of ₁ is performed.
Specifically, the supply amount of the fuel gas to the burner as a main heating device A ₁ is controlled.

Adiabatic humidifier controller _{C 2,} as shown in FIG. 4 (b), reads the temperature _{T 2} of the state point _{P 2} of the humidifying line _{L 2} in step STP21, the measured temperature of the adiabatic humidifier air temperature sensor _{S 2} in step STP22 MT ₂ is input.
Next, these are compared in step STP23, and if MT ₂ −T ₂ = 0, the process returns to step STP21 while maintaining the capacity of the adiabatic humidifier A ₂ , and if MT ₂ −T ₂ <0, excessive humidification occurs. Therefore, the capacity is decreased in step STP24 and the process returns to step STP21. If MT ₂ −T ₂ > 0, the humidification is insufficient. Therefore, the capacity is increased in step STP25 and the process returns to step STP21. ₂ is feedback-controlled.
Specifically, the amount of water supplied to the washer as the adiabatic humidifier A ₂ is controlled.

Auxiliary humidifier controller _{C 3,} as shown in FIG. 4 (c), reading the humidity _H 3 state point _{P 3} of the humidifying line _{L 3} (= target humidity _{H 4)} at step STP31, the air-conditioning air temperature at step STP32 measurement humidity MH ₄ of the humidity sensor _{S 4} is input.
Then, they are compared at step _STP33, back to MH 4 _-H 4 = 0 in the case when the auxiliary humidifier with step STP31 maintaining the capacity of the _{A 3,} in a humidified insufficient if MH 4 _-H 4 <0 Therefore, the capacity is increased at step STP34 and the process returns to step STP31. If MH ₄ −H ₄ > 0, it is overhumidified, so that the capacity is decreased at step STP35 and the auxiliary humidifier A returns to step STP31. ₃ is feedback controlled.
Specifically, the steam supply amount is controlled to be supplied to the direct steam the auxiliary humidifier A _3.

Finally, the auxiliary heating controller _{C 4,} as shown in FIG. 4 (d), reads out the target temperature _{T 4} of the target state point _{P 4} at step STP41, the measurement of the air conditioning air temperature-humidity sensor _{S 4} at step STP42 The temperature MT ₄ is input.
Then, they are compared at step _STP43, back to MT 4 _-T 4 = 0 in the case if the auxiliary heating device with step STP41 maintaining the capacity of the _{A 4,} are insufficient heating if MT 4 _-T 4 <0 In step STP44, the capacity is increased and the process returns to step STP41. If MT ₄ −T ₄ > 0, overheating is performed, so that the capacity is decreased in step STP45 and the auxiliary heating device A ₄ is returned to step STP41. Feedback control.
Specifically, the supply amount of hot air as a heat source of the heater serving as the auxiliary heating device A ₄ is controlled.

The above is one configuration example of the present invention, and its operation will be described with reference to FIG.
First, when the outside air state point P ₀ is measured, the heating / humidification lines L _{1 to} L ₄ of the temperature / humidity adjusters 4 (A _{1 to} A ₄ ) are set according to the measured values.
The outside air taken into the air conditioner 1 from the outside air inlet 2 is heated from the state point P ₀ to the state point P ₁ along the heating line L ₁ by the main heating device A ₁ .

Next, the air that has passed through the main heating device A ₁ is subjected to an adiabatic humidification operation in an enthalpy manner from the state point P ₁ to the state point P ₂ along the humidification line L ₂ by the heat insulation humidifier A ₂ .
In this case, setting the main heater exit state point P ₁ of the air A ₁ is adjusted according to the temperature T ₀ of the outside air state point P _0, the lower the outside air temperature T ₀ is the temperature T ₁ of the state point P ₁ low since the enthalpy _{Q 2} humidified line _{L 2} is also lowered, because the temperature _{T 1} of the state point _{P 1} the higher the outside air temperature _{T 0} is set high, the enthalpy _{Q 2} humidified line _{L 2} also increases.

Next, the air that has passed through the heat insulating humidifier A ₂ is humidified by the auxiliary humidifier A ₃ along the humidification line L ₃ from the state point P ₂ to the state point P ₃ with the same inclination as the specific enthalpy of the steam.
At this time, the lower the enthalpy Q ₂ humidified line L ₂ of the adiabatic humidifier A _2, auxiliary humidifier A ₃ for humidity is lowered state point P ₂ of the outlet air requires a large capacity, humidified since the humidity state point P ₂ a high enthalpy Q ₂ lines L ₂ is increased can be reduced humidification capacity of the auxiliary humidifier a _3.
The auxiliary humidifier A ₃ configured by direct steam is less energy efficient than the adiabatic humidifier A ₂ and increases the running cost. Therefore, the capacity of the auxiliary humidifier A ₃ is variably controlled according to the outside air temperature T _0. If it can be done, running costs can be reduced without using wasted energy, and as a result, it can contribute to prevention of global warming and emission reduction of greenhouse gases.

Then, the air that has passed through the auxiliary humidifier A ₃ are the auxiliary heating device A ₄ is heated from the state point P ₃ along the heating line L ₄ to the state point P _4, conditioned air-conditioned air of the target state point P ₄ is air It is sent out from the air outlet 3.

  INDUSTRIAL APPLICABILITY The present invention can be applied to an application of an air conditioner that supplies conditioned air having a constant temperature and humidity to a painting booth that is desired to be coated under the same conditions.

1 ......... Air Conditioner 2 ......... Outside Air Intake 3 ......... Air Conditioning Air Outlet A ₁ (4) ... Main Heater A ₂ (4) ... Adiabatic Humidifier A ₃ (4) ... Auxiliary humidifier A ₄ (4) ... Auxiliary heating device 5 ..... Temperature and humidity control device S ₀ ............ Outside temperature humidity sensor S ₁ ...... ... Main heating air temperature sensor S ₂ ...... Adiabatic humidified air temperature sensor S ₄ ............ Air-conditioning air temperature / humidity sensor C ₁ ............ Main heating controller C ₂ ………… Adiabatic humidifier controller C ₃ ………… Auxiliary humidifier controller C ₄ ...... …… Auxiliary heating controller P ₀ ………… Outside air state point P ₁ ………… State point P ₂ ………… State point P ₃ ………… State point P ₄ ………… Target state point L ₁ ………… Heating wire L ₂ ………… Humidifying wire L ₃ ………… Humidifying wire L ₄ ………… Heating wire

Claims (6)

As a temperature and humidity regulator that generates conditioned air at a preset target state point in the flow path from the outside air inlet formed on one end side to the conditioned air outlet formed on the other end side, the outside air is in that state A variable heating capacity variable heating unit that heats up to a predetermined temperature along a heating line of absolute humidity that passes through a point, and a variable humidification capacity that humidifies along the enthalpy humidification line that passes through a state point of the outlet air of the main heating unit An adiabatic humidifier, an auxiliary humidifier with variable humidification capacity that humidifies to the absolute humidity of the target state point along a humidification line with a slope equal to the specific enthalpy of steam passing through the state point of the outlet air of the adiabatic humidifier, and an auxiliary humidifier Temperature / humidity control with a variable heating capacity auxiliary heater that heats the outlet air of the device to the target state point along the heating line of absolute humidity that passes through the target state point In the air conditioning apparatus provided with a location,
The temperature / humidity control device is connected to a temperature / humidity sensor for detecting a state point of the outside air on the input side, and the humidification line of the heat insulation humidifier is in the range intersecting with the humidification line of the auxiliary humidifier, and the upper limit from the lower limit enthalpy An air conditioner which is set to be adjustable up to enthalpy and is set to a low enthalpy line at a low temperature and a high enthalpy line at a high temperature according to the outside air temperature.
The air conditioner according to claim 1, wherein the isenthalpy line is set based on a temperature difference between a reference temperature set in advance and an outside air temperature.
On the input side of the temperature and humidity control device, a main heating air temperature sensor that measures the temperature of air that has passed through the main heating device, an adiabatic humidification air temperature sensor that measures the temperature of the air that has passed through the heat insulation humidifying device, and an auxiliary heating device Air conditioning air temperature / humidity sensor that measures the state point of the air that has passed through
The outlet temperature of the main heating device is set to the temperature of the state point where the heating line and the humidifying line of the heat insulating humidifier intersect, and the heating capacity is feedback controlled based on the measured temperature of the main heating air temperature sensor,
The outlet temperature of the adiabatic humidifier is set to the temperature of the state point where the humidification line and the humidification line of the auxiliary humidifier intersect, and the humidification capacity is feedback controlled based on the measured temperature of the adiabatic humidification air temperature sensor,
The outlet humidity of the auxiliary humidifier is set to the absolute humidity of the target state point, and the humidification capacity is feedback controlled based on the measured humidity of the air conditioning air temperature and humidity sensor,
The air conditioner according to claim 1 or 2, wherein an outlet temperature of the auxiliary heating device is set to a temperature of a target state point, and a heating capacity thereof is feedback-controlled based on a measured temperature of an air conditioning air temperature / humidity sensor.
As a temperature and humidity regulator that generates conditioned air at a preset target state point in the flow path from the outside air inlet formed on one end side to the conditioned air outlet formed on the other end side, the outside air is in that state A main heating device with variable heating capacity that heats up to a certain temperature along a heating line of absolute humidity that passes through the point, and humidification that humidifies the air that has passed through the main heating device along the humidification line of the equal enthalpy passing through that state point A variable-capacity adiabatic humidifier and an auxiliary humidifier with a variable humidity capacity that humidifies the air that has passed through the adiabatic humidifier to the absolute humidity at the target state point along a humidification line that is equal to the specific enthalpy of the vapor passing through that state point. Each of the temperature and humidity regulators of the air conditioner having an auxiliary heating device with variable heating capacity that heats the air that has passed through the auxiliary humidifier to the target state point along the heating line of absolute humidity that passes through the target state point. Capacity control In the air-conditioning temperature and humidity controller for Le,
A temperature / humidity sensor for detecting a state point of the outside air is connected to the input side, and the humidification line of the heat insulation humidifier is set to be adjustable from the lower limit enthalpy to the upper limit enthalpy within a range intersecting with the humidification line of the auxiliary humidifier. A temperature / humidity control device for air conditioning is characterized in that it is set to low enthalpy at low temperatures and high enthalpy wires at high temperatures according to the outside air temperature.
The temperature / humidity control device for air conditioning according to claim 4 , wherein the isenthalpy line is set based on a temperature difference between a preset reference temperature and an outside air temperature.

On the input side, a main heated air temperature sensor that measures the temperature of the air that has passed through the main heating device, an adiabatic humidified air temperature sensor that measures the temperature of the air that has passed through the heat insulating humidifier, and the air that has passed through the auxiliary heating device Air conditioning air temperature and humidity sensor to measure the state point is connected,
A regulator that sets the outlet temperature of the main heating device at the intersection of the heating line of the main heating device and the humidification line of the heat insulating humidifier, and feedback-controls the heating capacity based on the measured temperature of the main heating air temperature sensor;
A regulator that sets the outlet temperature of the adiabatic humidifier at the intersection of the humidification line and the humidification line of the auxiliary humidifier, and that the humidification capacity feedback-controls based on the measured temperature of the adiabatic humidification air temperature sensor;
A controller that sets the outlet humidity of the auxiliary humidifier to the absolute humidity of the target state point, and that the humidification capacity is feedback-controlled based on the measured humidity of the air-conditioning air temperature and humidity sensor;
The outlet temperature of the auxiliary heating device is set to a temperature at a target state point, and the heating capacity is provided with a regulator that performs feedback control based on the measured temperature of the air-conditioning air temperature and humidity sensor. Temperature and humidity control device for air conditioning.

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