79 results about "Humidity ratio" patented technology

The present invention provides systems and methods of controlling local environment. In one embodiment, incoming air enters a contactor such the Direct Contact Cooler-Condenser (DCCC) where the air contacts water distributed on the contact media. After passing through the DCCC, the air is saturated at a temperature equal or close to that of the water. Depending on the state of the incoming air, in the DCCC will be humidified or dehumidified to yield saturated air at the desired humidity ratio. In one embodiment, a blower draws air through the DCCC and blows into the heater. The heater heats the air to the desired dry-bulb temperature. Before exiting, the air may pass through a filter.

The invention relates to a high-enthalpy bathing device which comprises a frame, and the frame is provided with an adiabatic housing; a heat-generating-and-transferring accommodation space is formed in the adiabatic housing; and the two ends of the accommodation space are respectively provide with an air intake port and an air exhaust port; starting from the air intake port to the air exhaust port, a centrifugal fan, an air bag, a flow equalizing plate, a fan-shaped nozzle, a transitional cavity and a fin-type electric hot plate set are successively arranged, wherein the wind bag is connected with the air outlet of the centrifugal fan; the flow equalizing plate is arranged in the air bag at the side facing the electric hot plate set; and the transitional cavity is arranged between the flow equalizing plate and the fin-type electric hot plate set. According to the invention, low-power thermal storage and high-intensity heat release are adopted, and in the earlier stage of heat release, the heat-release power reaches two times of the power of electric heating tubes, which ensures quick warming up and substantially reduces time for preheating air in the toilet; and heat release by means of ventilation and heat release by way of supply-water atomization and vaporization are carried out simultaneously, which increases the temperature and absolute humidity ratio of the toilet at the same time, and increases enthalpy content in the air, thereby improving the quality and comfort of bathing in winter; and the high-enthalpy bath disclosed by the invention can be widely applied and is easy to popularize.

A method and apparatus of supplying humid air to a fuel cell is disclosed. The extremely high thermal conductivity of some graphite foams lends itself to enhance significantly the ability to humidify supply air for a fuel cell. By utilizing a high conductivity pitch-derived graphite foam, thermal conductivity being as high as 187 W/m·K, the heat from the heat source is more efficiently transferred to the water for evaporation, thus the system does not cool significantly due to the evaporation of the water and, consequently, the air reaches a higher humidity ratio.

A system for a virtual dew point sensor is disclosed including a method for operating the virtual dew point sensor. The method includes determining a first humidity ratio indicative of the humidity associated with an ambient air as a function of at least a relative humidity associated with the ambient air. The method also includes determining a second humidity ratio indicative of the humidity associated with an exhaust gas as a function of at least one engine parameter. The method also includes determining a third humidity ratio indicative of combustion air directed toward an inlet manifold of an engine as a function of the first and second humidity ratios. The method further includes determining at least one dew point indicative of the combustion air as a function of the third humidity ratio and a pressure indicative of the combustion air.

The invention discloses a preparation method of a museum environmental-protection humidifying agent, which adopts the following steps of A) adding konjac glucomannan and sodium carboxymethylcellulose in water to be blended and gelatinized; B) adding products of the step A) in crylic acid, sodium hydroxide, initiator and a cross-linking agent, adjusting the temperature to be at 55DEG C to 60 DEG C to react for 1-2h, and stoving the reaction products by using microwaves; and C) grinding stoved sample in the step B), sieving by using a 20-mesh sieve and a 40-mesh sieve, obtaining 20-40 mesh particles to add in buffered solution with the pH of 4-6, preheating for 5-10min in a water bath at the temperature of 50-60 DEG C, adding glucanase in certain proportion, conducting enzymolysis for 0.5-2h, boiling for 10min at the temperature of 100 DEG C for oxyreductase, conducting suction filtration on obtained products, and conducting microwave drying to obtain the museum environmental-protection humidifying agent. Dosage of the buffered solution is 20-30 times of that of the sample, and the dosage of glucanase is 0.5-2% of that of the sample. The preparation method is rapid in product humidity response, big in humidity ratio, simple in manufacture cost and convenient to manufacture.

The invention discloses a dehumidification air conditioner capable of supplying air with multiple temperature parameters. The dehumidification air conditioner comprises a compressor, an indoor air-cooled condenser and an evaporator which are connected successively in a circulation mode, the indoor air-cooled condenser and the evaporator are arranged in an indoor unit, an indoor air inlet and an indoor air outlet are arranged on the indoor unit, an air inlet side of the indoor air-cooled condenser is opposite to the air outlet side of the evaporator, the indoor air inlet is arranged on the air inlet side of the evaporator, a low-temperature plenum chamber is communicated between the evaporator air inlet side and the indoor air outlet, a high-temperature plenum chamber is communicated between the air outlet side of the indoor air-cooled condenser and the indoor air outlet, and the high-temperature plenum chamber and the low-temperature plenum chamber are connected with the indoor air inlet through pipelines, and regulating valves are arranged at air inlet ends of the pipelines. According to the dehumidification air conditioner, the structure is simple, the usage is convenient, air with different temperature and humidity parameters is supplied according to different heat humidity ratios to meet control ranges of room temperatures and humidity, and energy is truly saved in dehumidifying conditions.

A transducer used for measuring water ratio of oil finished product is prepared as setting standard oil sample measurement cylinder and measurement cylinder of oil sample to be measured on erection support and applying capacity oil sample measurement cylinder as two said measurement cylinders, forming capacity oil sample measurement cylinder by two cylindrical semicircular electrodes in insulation barrel, arranging insulation semicircular bush and metal semicircular bush both being coordinated to each other on two ends of two said electrodes and setting end cover on each end of insulation barrel.

The invention relates to a method for conditioning urban sewage plant excess sludge through ultrasound and Fenton cooperation. The method includes the following steps that S1, the pH value of excess sludge is adjusted to be 2.0-4.0; S2, a Fenton reagent is added into the excess sludge, wherein the Fenton reagents comprises ferrous sulfate with the saturation humidity ratio being 0.5-1.50 g/kgDS and hydrogen peroxide with the saturation humidity ratio being 15-30 g/kgDS; S3, the flow state of the excess sludge is kept through stirring, and an ultrasonic probe is immersed below the liquid level of the excess sludge; S4, ultrasonic frequency is adjusted to be 20-40 kHz, sound energy density is adjusted to be 0.07-0.10 W/mL, ultrasound time is set to be 20-240 s, and the ultrasonic probe is started for reaction; S5, after the ultrasound time is up, the ultrasonic probe is taken out from the excess sludge, the remaining sludge continues to react, and reaction time is 0.25-2 h; S6, after the reaction time is up, conditioning of the excess sludge is finished. The method reduces consumption of the Fenton reagent and ultrasonic conditioning consumption. Meanwhile, dewaterability of the excess sludge is further improved.

A conditioned vestibule, control system, and method are disclosed for use with a cold storage doorway that separates warm and cold sides. A heater warms an air stream discharged across the doorway by the vestibule. A control unit operates the heater to maintain an air stream temperature. The control unit continuously monitors the air stream temperature and operates the heater to maintain the air stream temperature in a non-saturated state based on a humidity ratio. One embodiment calculates first and second temperatures based, respectively, warm and cold side tangent lines to a psychrometric saturation curve and based on the humidity ratio. The tangent lines are based on humidity and temperature sensed on the warm and cold sides. The air stream is warmed to at least the greater of the first and second temperatures. One embodiment controls air flow to adjust the humidity ratio to more efficiently operate the vestibule.

The invention discloses a humidifying and dehumidifying control method. The method comprises the steps that the current temperature and the current relative humidity of the environment where a unit islocated are obtained, and the current humidity ratio is obtained based on the current temperature and the current relative humidity; a set temperature is obtained, and based on the set temperature and the current humidity ratio, the humidity control state of the unit is adjusted according to a first preset rule. The invention further discloses the air conditioning unit and a computer readable storage medium. By means of the humidifying and dehumidifying control method, the air conditioning unit and the computer readable storage medium, the current humidity state and the current humidifying and dehumidifying requirements can be more accurately judged, resources are saved, and the user experience is improved.

The invention discloses a calculating method for measuring thermal performance of a filler of a lower cooling tower based on a two-point boundary value. The method comprises the following steps of describing heat and mass transfer in the filler through four ordinary differential equations; collecting field operation parameters and environment parameters of the cooling tower, confirming air temperature Ta and humidity ratio X of the bottom part (z is equal to 0) of the filler, and water temperature Tw and mass flow rate mw boundary values of the top part (z is equal to H) of the filler; assuming and iteration adjusting unknown boundary conditions of the bottom part (z is equal to 0) of the filler, so that the top part (z is equal to H) of the filler meets known boundary conditions; building a cooling tower filler thermal performance calculation model based on a filler thermal performance linear model; substituting into the above for calculation to obtain the conditions of the top part (z is equal to H) of the filler, and calculating the cooling tower thermal performance. According to the method, model building is carried out based on real-time measurement values, so that real-time on-line evaluation of the cooling tower thermal performance can be realized favorably, the calculation model is simplified under the measurement based on the two-point boundary value, and compared with the existing calculation method, under the premise of ensuring the calculation accuracy, the calculation time is greatly shortened.

The invention discloses a control method for temperature and humidity and an air conditioning system. The control method comprises the following steps of calculating an indoor load heat and humidity ratio according to the temperature and humidity and calculating a heat and humidity ratio according to a dehumidifying coefficient of a fan coiler; judging whether the heat and humidity ratio of the fan coiler is equal to the indoor load heat and humidity ratio or not; if not, adjusting the water inlet temperature of a heat exchanger to adjust the dehumidifying coefficient of the fan coiler till the heat and humidity ratio of the fan coil is equal to the indoor load heat and humidity ratio. By adjusting the water inlet temperature of the heat exchanger of the fan coiler to change the dehumidifying coefficient of the fan coiler till the heat and humidity ratio of the fan coil is equal to the indoor load heat and humidity ratio and changing the water inflow to change the refrigerating capacity of the fan coiler, the indoor temperature and humidity are controlled precisely, the energy consumption of the air conditioning system is reduced, and meanwhile, the comfort level of the human bodyis improved.

The invention discloses a staged five-day-interval cotton aphid emergence grade forecasting method and belongs to the field of prevention and treatment of agricultural insects. The method disclosed by the invention comprises the following steps: counting the stage characteristics of cotton aphid emergence according to a cotton aphid emergence grade based on the history meteorological data (temperature and humidity) and the cotton aphid emergence grade of former years; regressing a temperature to humidity ratio and the cotton aphid emergence grade in each stage and finding out the internal function relationship so as to predict the cotton aphid emergence grade. The method disclosed by the invention has the advantage of remedying the shortcoming of large time scale of an existing cotton aphid emergence grade forecasting model, can be used for rapidly and accurately predicting the cotton aphid emergence grade by just utilizing the meteorological conditions such as temperature and humidity, is good in forecasting effect, and is beneficial for scientific prevention of cotton aphids, providing the basis for scientific strategy of relevant departments and providing guarantee for cotton production.

The present invention relates to a method for defining that dried fruit and vegetable products or deep-fried crisps whether reaching to the glass state storage condition. Said method includes: under the condition of different temperature and moisture activity measuring moisture absorption equilibrium humidity ratio of dried fruit and vegetable products or deep-fried crisp so as to obtain isothermal moisture absorption curve; the measuring glass state conversion temperature of dried fruit and vegetable products or deep-fried crisps with different water contents, making hoth them implement complementation and application so as to obtain their critical moisture activity which reaches to glass state storage temperature condition. Said invention can ensure storage quality and stability of dried fruit and vegetable products or deep-fried crisps.

The invention discloses a dehumidification device for an electrical cabinet. The dehumidification device comprises a water condenser and a drainer, wherein the water condenser is arranged in the electrical cabinet and used for condensing vapor in the electrical cabinet, and then liquid water is formed; the drainer is connected with the water condenser and used for draining the liquid water condensed through the water condenser out of the electrical cabinet. According to the dehumidification device, the water condenser is arranged in the electrical cabinet, the water condenser is used for independently condensing the vapor in the electrical cabinet, the liquid water is formed and drained out of the electrical cabinet through the drainer, the air humidity in the electrical cabinet is effectively reduced, and the water content in air in the electrical cabinet is obviously smaller than the saturation humidity ratio of the electrical cabinet, so that the situation that the vapor in air is condensed on the surface of equipment due to sharp drop of environment temperature is avoided, through the dehumidification device for the electrical cabinet, the air humidity in the electrical cabinet can be effectively reduced, the situation that water is condensed on the surface of the equipment due to drop of the external environment temperature, and safety operation of the electrical equipment is damaged is avoided, and the reliability of the electrical equipment is improved.

The invention discloses a humidity calibration method. The humidity calibration method is characterized by comprising the following steps of acquiring saturated humidity corresponding to different temperatures under a predetermined atmospheric pressure, as well as a measured temperature and an environmental temperature; correcting the measured temperature to obtain a corrected temperature; acquiring saturated humidity corresponding to the measured temperature and the corrected temperature; and correcting the measured humidity according to the saturated humidity at the measured temperature andthe saturated humidity at the corrected temperature. According to the humidity calibration method provided by the invention, the measured humidity is calibrated by using the principle that the saturated humidity ratio at a corresponding temperature is equal to the unsaturated humidity ratio at the corresponding temperature, so that the method is suitable for the situation that the environmental humidity measured by a humidity sensor under the influence of the temperature difference of an object to be measured is inaccurate due to the temperature difference between the objected to be measured and the environmental temperature. The invention further provides a humidity calibration module using the calibration method and a dehumidifier using the humidity calibration module. The dehumidifier can be used for sensing the environmental humidity more accurately for more accurate automatic control.

The invention discloses a control method for drying down jackets. The control method is characterized by comprising the following steps: a first humidity detection and judgment step: detecting to obtain a first humidity value, judging whether the first humidity value is greater than a first reference humidity or not, if so, entering a first drying stage, and otherwise, entering a second drying stage; a first drying stage: controlling the temperature not to exceed a first reference temperature through opening and closing of a heating part, thus being beneficial to preventing the down jackets from being damaged by high temperature, and beneficial to protecting the performance of the down jackets, wherein a breathing process is included, so that the clothes can be fully stretched, the air canpenetrate through the extruded parts of the clothes, and the drying uniformity is improved; and a second drying stage: controlling the temperature not to exceed a third reference temperature, whereinthe humidity of the second drying stage is lower than that in the first drying stage, so that the third reference temperature is set to be lower than the first reference temperature, and the performance of the down jacket is protected; and a patting process is included, so that bulk down feathers generated in a washing process is loosened, and the drying efficiency and the drying uniformity are improved.

The invention discloses a humidifier for automatically adjusting oxygen and humidity, used between oxygen and a humidification machine. The humidifier consists of an oxygen atomizing and circulating pipeline 1, a humidification head 2, a pressure humidification kettle 3, a pressurizing pipe 4, a micro-air pump 5, a humidity detector 6, a humidity controller 7, an air compressor controller 8 and acontrol box 9. In the process that oxygen in an oxygen cylinder 10 flows past the humidification machine 11,through detection of oxygen humidity percentage at the tail end of the oxygen atomizing andcirculating pipeline 1, the detection structure is transmitted to the humidity controller 7, and then is transmitted to a control display screen 9-1 by the humidity controller 7; and after a requiredhumidity ratio number is set, the control display screen 9-1 sends a command to the humidity controller 7, according to the required humidity, the humidity controller 7 sends an operation speed command to a motor of the micro-air pump 5 to produce pressure which is required to meet the preset humidity, so that required water amount is released and atomized by the humidification head 2 to the oxygen to increase the water content in the oxygen.

The invention discloses a proportion-adjustable secondary air return air conditioning system with a reheater and belongs to the technical field of air conditioning. The system comprises an air handling unit, a service room, an air supply pipeline, an air return pipeline and a fresh air pipeline, an analog quantity electric control valve is arranged on a primary air return pipeline, and an electric control valve is arranged on a secondary air return pipeline. The problems that a traditional secondary air return system is low in dew point and cannot be controlled are mainly solved. The system is characterized in that when the heat-humidity ratio of a room served by the air conditioning system is reduced, the dew-point temperature obtained through a traditional calculation method is low, and the requirement for the low dew-point temperature cannot be met by using a conventional cold source. The reheater is additionally arranged, the dew point temperature of the system can be increased when the heat humidity ratio of a room is low, a conventional cold source can meet the using requirement of the system, and the secondary air return system can be effectively controlled. The proportion-adjustable secondary air return air conditioning system can replace a traditional primary air return air conditioning system in the fields of clean air conditioners and other constant-temperature and constant-humidity air conditioners, and has a very good energy-saving effect.

The invention provides a radiant cooling and fresh air integrated system with an adjustable heat-humidity ratio, and an operation method, for improving the operation efficiency of the system while separate control over temperature and humidity is achieved. The radiant cooling and fresh air integrated system with the adjustable heat-humidity ratio comprises a fresh air dehumidifying device, a radiant cooling device, a compressor, a condensing device and a throttling valve, wherein the fresh air dehumidifying device comprises a first evaporator, a fresh air fan and a fresh air opening which aresequentially arranged in an air direction; the radiant cooling device comprises a second evaporator, a water storage tank and a radiant cooling tail end; the compressor, the condensing device, the throttling valve, the first evaporator and the second evaporator are sequentially connected. In the embodiment, a non-azeotropic refrigerant is adopted, a low-temperature cold source is generated in a low-temperature section to cool and dehumidify fresh air to be sent into a room, and thus indoor humidity adjustment is completed; high-temperature chilled water generated in a high-temperature sectionis supplied to the radiant cooling tail end to absorb indoor heat, so that indoor temperature adjustment and independent treatment and control over temperature and humidity are achieved; and the equivalent evaporation temperature of the non-azeotropic refrigerant rises, and the operating efficiency of the system is improved.