42 results about "Mean radiant temperature" patented technology

The invention discloses a control method and system for improving the comfort of an air conditioner sleeping mode. The control method comprises the following steps that the gender and/or the age groupof a user are detected; the outdoor air temperature, the indoor air temperature and the indoor air humidity are collected in real time, the average of the outdoor air temperature and the indoor air temperature is set as the average radiation temperature, and a target temperature value is calculated by substituting clothing heat resistance, air velocity parameters and human body metabolic rate parameters into a PMV equation, wherein the clothing heat resistance and the air velocity parameters are preset by an air conditioner; and the frequency and operating mode of a compressor are adjusted through a 0.1-DEG C precise temperature control technology, and thus the temperature is adjusted to the target temperature. The precise target temperature value can be calculated through a fitting function, real-time precise adjustment can be achieved, and the heat comfort of the user under the sleeping state is significantly improved.

The invention specifically relates to a comfort control method of a hotel room air conditioner. The method comprises the following steps of: determining an indoor average radiation temperature according to regions, dates, outdoor weather conditions and peripheral protection structure parameters; determining the metabolic rate of a human body according to light perception and time; calculating a PMV value according to indoor temperature, indoor relative humidity, the average radiation temperature and the metabolic rate of the human body; determining a PMV interval; comparing the PMV value with the PMV interval and issuing an air conditioning control instruction. The PMV target value is set to one side in the hotter direction during indoor refrigeration and to one side in the cooler direction during heating, the PMV control interval is timely adjusted according to different sleep stages after human body sleep, and therefore excessive energy consumption is inhibited within the comfort range, and the reduction of air conditioning load and energy conservation are realized. The PMV control interval is corrected in time to achieve energy-saving comfort control after user intervention isreceived.

The invention discloses a sensible temperature measuring method, which is carried out by the following steps: (1) measuring angle coefficients, surface temperatures and surface blackness degree of all surfaces of the environment; (2) calculating to obtain a weighted value of the surface blackness degree; (3) calculating an average radiation temperature; (4) measuring and calculating an environment air temperature, a radiation heat exchange coefficient and a heat convection coefficient; (5) calculating and deducing an operation temperature; (6) measuring relative humidity and air flow speed of the environment air; and (7) calculating a sensible temperature tper. Compared with the prior art, parameters including the temperature, the humidity, the air speed and the like of the air are measured, and the radiation, the temperature and the air degree are considered, so that the obtained sensible temperature is closer to the actual feeling of a human body. The sensible temperature measuring method is particularly suitable for fields including an infant room, a patient room and the like which are sensitive to the sensible temperature, so that the peripheral environment is conveniently adjusted to enable the indoor environment to be at a more comfortable state.

The invention particularly relates to an indoor comfort comprehensive evaluation system and method based on an artificial neural network model. The system comprises a data acquisition unit, a data transmission unit and a remote server. The data acquisition unit is used to collect indoor temperature, relative humidity, average radiant temperature, light intensity, wind speed, noise and CO2 content,and transmit the collected data to a remote server through the data transmission unit. The remote server substitutes the received data into the neural network model for calculation to acquire the indoor environment comfort. The neural network model is trained through a cuckoo search algorithm. The noise and CO2 content are acquired, which can further improve the accuracy of indoor environment comfort evaluation. The cuckoo search algorithm is used to optimize the neural network model, which can prevent the neural network from falling into the local optimal solution. The accuracy of the modelcan be effectively improved. The operating rate is accelerated. System errors are reduced.

A vehicle climate control is compensated for direct and indirect infrared heat loading due to solar radiation based on a mean radiant temperature sensor and a cabin air temperature sensor. The mean radiant temperature sensor include a temperature responsive element such as a thermistor enclosed in a hollow spherical housing that blocks visible light but absorbs infrared radiation. The difference between the mean radiant temperature and the cabin air temperature provides a measure of the total infrared heat loading on the cabin and is used to increase the cooling capacity of the climate control system.

The invention discloses a method and a device for measuring the boiler hearth ash fouling coefficient online. The method comprises the following steps that (1) under a boiler reference operation state, a three-variable test of a plurality of operation conditions is carried out, and the change rule of the specific flame radiation temperature under the boiler reference state is obtained; (2) under the actual operating state of the boiler, operation parameters including the load of a hearth, the feeding state of a pulverized coal burner, a burner swing angle and the like are measured, and the specific flame radiation temperature is determined under the actual operation state; (3) the flue-gas temperature of the section of the hearth below the flame deflection angle is measured, and accordingto the average value of the flue-gas gas temperature in the section of the hearth and the specific flame radiation temperature in the actual operation state, the average radiation temperature of flames in the boiler is determined; (4) according to inlet and outlet working quality parameters of a water cooling wall evaporation system, the radiant heat flow of the heating surface of the water cooling wall of the hearth is determined; and (5) by utilizing the radiant heat flow of the heating surface of the water cooling wall and the average radiation temperature of the flames in the boiler, the ash fouling efficient of the heating surface of the hearth is determined according to the flame radiation law.

The invention discloses a method, a device and a system for microwave hyper-spectral clear air scaling. The method comprises the following steps of: setting an atmospheric opacity of a clear air background in a zenith direction; obtaining an atmospheric mean radiant temperature from a database, wherein the atmospheric mean radiant temperature is atmospheric mean radiant temperature of different regions, different months, different frequencies and different elevations; figuring out an atmospheric brightness temperature of the clear air background in the zenith direction according to the atmospheric opacity and the atmospheric mean radiant temperature; obtaining a radiation temperature of a black body scaling source; carrying out two-point scaling according to the atmospheric brightness temperature and the radiation temperature, and figuring out system gains of all channels of a microwave hyper-spectral radiometer; figuring up the atmospheric opacity in all scaling wave velocity irradiation directions according to the system gains; and carrying out iterative computation on the atmospheric opacity to obtain new scaling data capable of meeting a clear air scaling model. According to the invention, the scaling precision of the microwave hyper-spectral radiometer is improved.

Provided is a scanning method for measuring the radiation temperature of a human body surface. An infrared thermal imaging detector is used to perform one-by-one pixel translation or vertical movementwith respect to a measured object, human body surface radiation temperature distribution images are collected continuously, the radiation temperature of a pixel corresponding to any fixed point in the measured object is extracted one by one from all the collected human body surface radiation temperature distribution images according to the movement direction, the adding cumulative calculation isperformed to obtain the average radiation temperature of any fixed point of the measured object and the average radiation temperature is taken as a credible temperature, finally the credible temperature values of all the fixed points of the measured object form a credible infrared thermal imaging temperature distribution image of the human body surface through image reproduction software accordingto original coordinates. A device for implementing the method includes the infrared thermal imaging detector, a two-axis moving mechanism, a moving mechanism control system and a computer. Accordingto the method and device, the influence caused by dead pixels of the infrared thermal imaging detector is solved, and measured data is more accurate.

The invention discloses a method and device for regulating and controlling dynamic comfortable wind of a fan in a sleep state based on heart rate. The device mainly comprises the fan, an environmentalparameter acquisition module, a heart rate acquisition module, a metabolic rate calculation module, a processing module, a control module, a wind speed regulation module and a single chip microcomputer. The method mainly comprises the following steps that (1) the environmental parameter acquisition module acquires the temperature and humidity of the surrounding environment and the average radiation temperature of the fan; (2) the metabolic rate calculation module processes the heart rate signal to obtain a metabolic rate signal of a user; (3) a standard effective temperature signal is calculated; (4) the control module generates a sine wave function signal based on a preset wind speed fluctuation period T, a reference wind speed V0, an upper wind speed limit Vmax and a lower wind speed limit Vmin and feeds the sine wave function signal back to the wind speed regulation module; and (5) the wind speed regulation module regulates the wind speed of the fan based on sine wave function, a maximum wind speed regulation signal or a minimum wind speed regulation signal. According to the method and device, the condition that sleeping quality is influenced due to the fact that an user wakesup under constant airflow caused by cold or hot is prevented.

The invention discloses a control method and a control device for air conditioning equipment. The method comprises the following steps: acquiring the difference value between an appointed temperatureof the environment of the air conditioning equipment and a set temperature of the air conditioning equipment, wherein the appointed temperature is the temperature determined based on the average radiation temperature of the environment of the air conditioning equipment and the internal environment temperature; comparing the difference value with a first preset threshold valve; and controlling theair conditioning equipment to execute action corresponding to the comparison result. The method and device disclosed by the invention solve the technical problem that the user comfort is relatively poor as operation of the air conditioning equipment is only determined by means of the indoor environment temperature.

The invention discloses an indoor mean radiation temperature determination method and device. The method comprises steps that firstly, heat exchange relations between a cold radiation ceiling surface and each indoor space surface in a cold radiation central air conditioner system according to the radiation heat exchange principle, secondly, surface temperature of multiple measurement positions of the radiation surface, power supply temperature, backwater temperature and water flow of refrigerated water at a tail end of a central air conditioner system cold radiation ceiling are measured, and lastly, a total external radiation heat exchange amount of the cold radiation ceiling and the total capillary convection heat exchange amount are made to be equal according to the law of energy conservation, and the indoor mean radiating temperature is calculated. The method is advantaged in that compared with a traditional determination method employing a black-bulb thermometer, the indoor mean radiating temperature can be rapidly and conveniently calculated through employing a micro processor, an infrared detector and a multifunctional flowmeter without additionally-arranged hardware, operation is simple and convenient, and high accuracy is realized.

The invention relates to the field of community functional facility planning, and particularly discloses a functional facility configuration method based on community microenvironment and outdoor comfort simulation. Microclimate parameters such as temperature and humidity, wind speed and average radiation temperature of an open space of a community are generated through microenvironment simulation, and a physiological equivalent temperature is further obtained through human body physiological index simulation; dividing the outdoor activity site of the community into a suitable activity area, a more suitable activity area and an unsuitable activity area according to the thermal sensation accumulated duration corresponding to the physiological equivalent temperature; according to the influence degree of the space carrier of the functional facility on the microenvironment parameters, the optimization of the unsuitable or more suitable activity area and the space comfort of the building roof is realized. According to the method, three types of outdoor activity areas are divided according to physiological equivalent temperature values through cell-scale microenvironment simulation, and optimization of microclimate of a relatively suitable activity area is realized by establishing four space carriers, so that the microclimate is converted into a suitable activity interval, and the activity duration of outdoor comfortable feeling of residents is prolonged.

This invention relates to a heating comfort fuzzy control air-conditioner in which some indoor environment parameters are measured by a sensor and sent into the fuzzy control device to calculate to obtain the fuzzy judge result of heating comfort. If the judge result is comfort the control device with not interpose the operation of the air conditioner, otherwise the control device will judge the objects to be regulated by the comparing and analyzing the four environment parameters of temperature, humidity, wind speed and average radiation temperature through program calcualtion according to the change range of the different environment parameters under heat comfort condition, and then automatically regulate the operation state of the air conditioner by changing the flow of the refrigerant and regulating the rotation speed of the fan to change the indoor environment to a heat comfort condition.