55results about How to "Raise the dew point temperature" patented technology

The invention discloses a method and a related device for controlling radiation fresh-air conditioning systems. The method includes acquiring outdoor environmental temperatures; enabling fresh-air dehumidifiers to run according to the lowermost air grades under the control if the outdoor environmental temperatures reach first reference values, or acquiring air outlet dew-point temperatures of the fresh-air dehumidifiers if the outdoor environmental temperatures do not reach first reference values; enabling the fresh-air dehumidifiers to continue running according to current grades under the control if the air outlet dew-point temperatures reach second reference values but do not reach third reference values; lowering the air grades by a first preset number if the air outlet dew-point temperatures reach the third reference values, and then enabling the fresh-air dehumidifiers to run under the control; turning off heat pump water machines under the control when the air outlet dew-point temperatures reach fourth reference values. According to the technical scheme, the method and the related device have the advantages that turning-off frequencies of the heat pump water machines and water valves can be effectively reduced on the basis that condensation generated on the surfaces of radiation tail ends is effectively prevented, accordingly, the radiation fresh-air conditioning systems have sufficient refrigerating capacity, and the comfort can be improved for people in rooms.

The invention relates to a synergic-purification all-heat-recovery combined heat and power generation system which comprises a heat power plant waste heat utilization system and a heating station, wherein the heat power plant waste heat utilization system is connected with the heating station through a heat supply network return water supply pipeline; and the heat power plant waste heat utilization system comprises an air humidifier, a gas-water thermal tower, a water-to-water heat exchanger, an absorption heat pump, a steam-to-water heat exchanger and a steam condenser. In the heat power plant, the air is humidified to enhance the dew-point temperature of flue gas; the return water temperature is further lowered in the heating station, so that the heat supply network return water is lowered to 10 DEG C and even lower; and the two measures are integrated to recover all the flue gas waste heat and dead steam waste head. Meanwhile, a dosing port is arranged on a flue gas waste heat recovery spray water path, so that the flue gas is cleaned in the waste heat recovery process, thereby achieving favorable denitrification effects. The acidic condensation water is neutralized to achieve the discharge standard, thereby integrating the functions of waste heat recovery and flue gas purification. The synergic-purification all-heat-recovery combined heat and power generation system is suitable for combustible gas heat power plants, biomass heat power plants and the like, and can be further popularized to coal-burning heat power plants and boilers.

The invention discloses an air-handling unit based on air blast heat recovery and graded use of energy, which relates to an air-handling unit. The air-handling unit aims to solve the problems that the prior air-conditioning unit for centralized processing of blast air can not realize graded use of the energy, the dew point achieved by air cooling treatment is low, and reheated blast air is easy to cause counteraction of cold and heat, so that the energy consumption of the system is increased. The air-handling unit is as follows: an air outlet is communicated with an inlet of an air blast channel of an air blast and heat recovery device; a blast pipe is communicated with an outlet of the air blast channel of the air blast and heat recovery device; and one end of a second pipe is communicated with an outlet of an air blast and heat recovery pipe of the air blast and heat recovery device, and the other end of the second pipe is communicated with the initial end of a lower handling unit. Due to arrangement of the air blast and heat recovery device, the air-handling unit has a simple and reasonable systemic structure and low manufacturing cost. The air-handling unit effectively solves the problem of counteraction of the cold and the heat, reduces energy consumption of the system and improves the dew-point temperature of air cooling treatment through the air blast and heat recovery device, so as to improve the performance coefficients of the refrigerating system.

The invention provides a gas-fired boiler flue gas latent heat recycling system. Flue gas of a gas-fired boiler body enters a flue gas / circulating water contact tower, the flue gas in the flue gas / circulating water contact tower and circulating water in a circulating water subsystem make direct countercurrent contact for heat exchange, gas-fired boiler flue gas latent heat recycling is achieved, the high-temperature part of latent heat recycled from the flue gas is used for heating boiler feed water, and the low-temperature part of the latent heat is used for heating and humidifying combustion air and fuel gas, so that emission of combustion NOx is reduced. According to the gas-fired boiler flue gas latent heat recycling system, the flue gas and the circulating water make direct contact for heat exchange in the flue gas / circulating water contact tower, the heat exchange area is greatly decreased, the cost is reduced, and meanwhile the acid corrosion problem of a heat exchanger is avoided; by adopting a multi-segment heat exchange mode, the purpose that multiple segments of towers make direct contact with one another for heat exchange on the basis of different water-gas ratios is achieved, therefore, heat release of the flue gas latent heat and heat absorption of the circulating water are matched with each other and combined with air and fuel heating and humidifying, the flue gas latent heat recycling rate is significantly increased, and the flue gas latent heat can be recycled to the maximum extent.

The invention relates to a natural gas oxygen-enriched combustion system capable of using liquefied natural gas (LNG) cold energy for air separation oxygen-making and carbon capture. The system comprises an LNG cold energy air separation oxygen-making subsystem, an oxygen-enriched high-pressure water-adding combustion cycle power generation subsystem and a high-pressure liquid oxygen carbon capture subsystem; the LNG cold energy is applied to the air separation oxygen-making process of a natural gas oxygen-enriched combustion power plant, and carbon dioxide produced by oxygen-enriched combustion is recovered by condensation at the same time, so that zero emission of carbon is realized. The problems that the oxygen-enriched combustion power plant is high in energy consumption of air separation oxygen-making and high in carbon capture cost can be solved. Furthermore, a high-pressure liquid nitrogen recycling oxygen-making subsystem is additionally arranged, so that liquid nitrogen cold energy is further utilized, and the oxygen-making energy consumption is reduced; therefore, system energy efficiency level is improved. After the natural gas oxygen-enriched combustion system is adopted, the cold energy is continuously transmitted and used, and the two problems that the oxygen-enriched combustion power plant is high in energy consumption of air separation oxygen-making and high in carbon capture cost can be solved; the natural gas oxygen-enriched combustion system can be used for an electric system taking LNG as fuel.

The invention provides a forced circulation hot water system with a self-power-outage-protection function. The provided hot water system mainly comprises a water return collection box, a water-cooling wall lower collection box, a water-cooling wall hearth, a water-cooling wall upper collection box, a drum, an economizer and recirculation pipes. The hearth is used as a low-temperature heating surface. The economizer is used as a high-temperature heating face for heat supply. According to the water circulation flow in a boiler, water flows to the water-cooling wall lower collection box from the water return collection box, enters the water-cooling wall upper collection box, flows to the drum, flows into the economizer from the drum and finally flows out of an outlet of the economizer. In addition, the first recirculation pipe and the second recirculation pipe are arranged; and when power outage happens to the hot water boiler, the water circulation between the drum and the water return collection box and the water circulation between the drum and the economizer are converted into to relatively independent natural circulation loops, the water flow direction of the normal work condition is kept, accidents caused by the fact that working media in a water-cooling wall of the hearth and a pipeline in the economizer are heated and vaporized are prevented, the self-power-outage-protection function of the hot water system of the hot water boiler is achieved, and the low-temperature corrosion to the heating surface is also effectively avoided.

The invention provides an air compressing water generator which comprises a bottom plate, a first compressing device, an air inlet device, a second compressing device, a condensing device, an air cylinder device and a filtering device. The bottom plate is provided with a collecting frame, a first supporting rod, a second supporting rod, a first sway rod, a first support and a second support. The first compressing device comprises a first air cylinder, a first pushing rod, a first compressing box, a first pushing plate, a first sealing ring, a first pushing ring, a first spring, a second spring and a first fixing rack. The air inlet device comprises an air inlet pipe, a fan, a first filter screen, a first sponge block and a third support. The second compressing device comprises a second air cylinder, a second pushing rod, a second compressing box, a second pushing plate and a second sealing ring. The second pushing plate is located on a third fixing rack below the second fixing rack. The condensing device comprises a condensing box, a condensing plate, a first pipeline and a fourth support. Vapor in air is converted into liquid water, efficiency is high, the conversion rate is large, and water resources in the air can be utilized fully.

The invention relates to a deep-recovery device for boiler flue gas waste heat. The deep-recovery device is characterized by comprising a boiler, a steam-water heat exchanger, a water-water heat exchanger and an N grades of flue-air total-heat exchange units, and each flue-air total-heat exchange unit comprises a flue-water heat exchanger and an air-water heat exchanger, wherein N is greater than or equal to 2. Compared with an existing recovery device for flue gas waste heat, the deep-recovery device has the advantages that the N grades of flue-air total-heat exchange units or a flue-water heat exchanger with N-1 liquid distribution units and an air-water heat exchanger with N-1 water pans are arranged, total-heat exchange of flue and air which are equivalent in temperature grade is performed respectively, temperature in flue outlet can be lowered by regulating spray water at all grades, temperature in the air outlet is raised, a flux matching state is achieved, problems about nonlinearity of a water steam saturation line and the like are solved, total-heat exchange efficiency of the flue and the air is remarkably improved, and the deep-recovery device is widely applicable to recovery devices of the boiler flue gas waste heat.

The invention provides a device and a system for white smoke elimination, emission reduction and deep waste heat recovery for coal-fired flue gas, and relates to the energy field. The device comprisesa flue gas desulfurization unit, a flue gas waste heat recovery unit, a flue gas-air total heat exchange unit and a flue gas white smoke elimination unit. Through the arrangement for the flue gas-airtotal heat exchange unit, flue gas waste heat is recovered, and the moisture content of combustion-supporting air is increased, so that the dew point temperature of the flue gas is increased; throughthe arrangement for the flue gas waste heat recovery unit and the flue gas white smoke elimination unit, vapor in the flue gas is condensed and recovered, and finally the moisture content of flue gasemission is lowered, and the generation of white smoke is reduced; the humidification degree of air is increased, a combustion temperature can be lowered, and the emission of NOx and SO2 is reduced;the technical problems that lots of flue gas waste heat is wasted and the phenomenon of white smoke is generated, in the prior art, are alleviated; and a natural cold source of outdoor air in winter is utilized as a main cooling and dehumidification source, mutual coupling in mechanism and mutual supplement are achieved, and the effect of integrating the functions of desulfurization, nitrogen reduction, waste heat recovery, white smoke elimination and the like is realized.

The invention provides a heat pump type belt low-temperature sludge drying machine which comprises a machine body, a drying room and a heat pump system are arranged in the machine body, a first conveying belt and a second conveying belt are arranged in the drying room, and a first air duct used for communicating the drying room with the heat pump system is arranged in the upper-layer space of the machine body. A circulating fan for sucking warm and humid air in the drying room into the heat pump system is arranged in the first air duct, a second air duct for communicating the drying room with the heat pump system is arranged in the lower-layer space of the machine body, a first air inlet and a second air inlet which are communicated with the second air duct are formed in the side wall of the drying room, and the first air inlet is formed between the first conveying belt and the second conveying belt; and the second air inlet is formed below the second conveying belt. According to the heat pump type belt type low-temperature sludge drying machine, the first air inlet and the second air inlet are formed in the side wall of the drying room, so that the temperature and the moisture unsaturation degree of hot air passing through the first conveying belt and the second conveying belt are the highest, and evaporation of moisture on the surface of sludge and diffusion of moisture in the sludge are promoted to the maximum extent.

The invention discloses a self-heat recuperation wood drying system and method and belongs to the field of energy sources and power. The wood drying system comprises a drying tank (1), a compressor (2), a heating coil (3), a heat exchanger (4), a first gas-liquid separator (5), an expander (6), a condenser (7), a second gas-liquid separator (8) and a draught fan (9). According to the self-heat recuperation wood drying system, the dew point temperature of humid air at a drying outlet (11) is increased through compressing of the compressor (2), and latent heat of water vapor in dried air is recycled in an indirect heat exchange mode; evaporation of moisture in wood is accelerated in a wood-air direct heat exchange mode, and then consumed energy of the compressor compressing dry air in the humid air is recycled through acting of the expander; through the process, the heat absorbed in the drying process is transferred back to air in the drying tank so that self-heat recuperation at a high level can be formed, the wood drying system only needs to supplement a part of compression work and wasted work of the draught fan, and then operation can be achieved; and energy consumption is low, pollution is avoided, and the drying speed is high.

The invention relates to a condensate water prevention gas water heater. The condensate water prevention gas water heater comprises a shell, a heat exchanger, a first draught fan, a vent pipe, a second draught fan, a temperature and humidity sensor and a temperature sensor, wherein the first draught fan is arranged at an air inlet of a combustion chamber; the second draught fan and the temperatureand humidity sensor are arranged close to an outlet of an air inlet pipe; the temperature sensor is arranged on the surface of the heat exchanger; the vent pipe comprises the air inlet pipe and a smoke exhaust pipe which are isolated; and a spiral blocking plate is arranged in the air inlet pipe. The invention further relates to a control method of preventing condensate water of the gas water heater. The control method comprises the steps of calculating the moisture content of air going into the shell, and calculating the moisture content of combustion products; calculating the moisture content of exhaust gas according to the moisture content of the air and the moisture content of the combustion products; calculating the dew point temperature of the exhaust gas according to the moisture content of the exhaust gas; and comparing the dew point temperature of the exhaust gas with the surface temperature of the heat exchanger, adjusting the rotating speeds of the second draught fan and the first draught fan according to the comparison result and then reducing the moisture content of the air going into the shell. Through the condensate water prevention gas water heater and the controlmethod, the dew point temperature of the exhaust gas can be reduced, and generation of condensate water is prevented.

The invention relates to a water treatment and supply apparatus, which comprises various water-collecting containers, water intake, water discharge and water level control valves, capillary material shelf layers, various heat conduction tubes, atmosphere preheating and acceleration units, various natural or artificial energy source-utilized structures and a factory sewage-evaporating and atmospheric form-converting water collection apparatus imitating and enhancing the conversion from soil water into atmospheric water or the conversion from atmospheric water into soil water conditions. The containers are provided with the water intake, water discharge and water level control valves, the capillary material shelf layers, capillary and hydrophilic surfaces and the atmosphere preheating and acceleration units to accelerate water-evaporating or atmospheric form-converting water collection. The heat conduction tubes and the natural or artificial energy source-utilizing structures supply needed energy to water-evaporating or atmospheric form-converting water collection.

The invention belongs to the field of chemical thermodynamic engineering application, and relates to a method for changing distillation conditions of a binary mixture system by using an electrostatic field. An electrostatic field with the direction parallel to the phase interface is applied to the binary mixture system with certain composition, so that the temperature-composition phase diagram of the binary mixture system can move towards the temperature rising direction, and the bubble point temperature and the dew point temperature of the binary mixture system are increased compared with those of the binary mixture system without the action of the electrostatic field; under the determined pressure intensity, the temperature-composition phase diagram of the binary mixture system can move towards the temperature reduction direction by applying an electrostatic field with the direction perpendicular to the phase interface to the binary mixture system with certain composition, and the bubble point temperature and the dew point temperature of the binary mixture system are reduced compared with those of the binary mixture system without the action of the electrostatic field. The gas-liquid balance condition of the system is changed by providing smaller electric energy for the binary mixture system, so that the distillation efficiency is improved by utilizing an electrostatic field, the gas-liquid mass transfer separation process is enhanced, and the energy consumption is reduced.

The invention discloses a novel DCC device waste heat boiler which comprises a flue and a steam pocket. The structure of the flue comprises a first flue and a second flue, wherein a connecting flue communicates with the top of the first flue and the top of the second flue, the lower end of the first flue communicates with an inlet flue, and the lower end of the second flue communicates with an outlet flue. Superheaters, a first evaporator and an ammonia spraying device are sequentially arranged in the first flue from bottom to top, a main bypass flue communicates with the inlet flue, and a first bypass flue with a first adjusting device communicates with the portion, located between the superheaters and the first evaporator, of the first flue. A second bypass flue with a second adjusting device communicates with the portion, located between the first evaporator and the ammonia spraying device, of the first flue, and the first bypass flue and the second bypass flue are communicate with the main bypass flue. Denitration devices, second evaporators and coal economizers are sequentially arranged in the second flue from top to bottom. By means of the structure, the denitration rate of the catalyst SCR can be guaranteed.

The invention relates to a flue gas waste heat deep recovery system. The flue gas waste heat deep recovery system comprises a vertical type thin-walled hollow barrel-shaped shell, a rotating core which is disposed coaxially on the upper part of the shell and can rotate relative to the self central axis, a separation plate which is arranged in the shell and passes through the central axis of the shell and the rotating core, a plurality of baffles, a spraying device and a plate heat exchanger connected to a water inlet and a water outlet of a heat releasing unit and a spraying device; the rotating core is in a vertical type thin-walled hollow barrel shape, the longitudinal section of the side wall of the rotating core is in a honeycomb shape, and the rotating core is filled with a hygroscopic material; the separation plate divides the inner space of the shell and the rotating core into two parts of an air flow passage and a flue gas flow passage; the multiple baffles are separately disposed between the top of the shell and the top of the rotating core, between the top, on one side of the flue gas flow passage, of the rotating core and the top of the partition plate, between the bottom, on one side of the air flow passage, of the rotating core and the baffles and between the bottom, on one side of the flue gas flow passage, of the rotating core and the shell; and the spraying device is disposed in the flue gas flow passage in the lower part of the shell.

The invention discloses a smoke waste heat recovery and hot water white smoke elimination system and a working method thereof. The system comprises an evaporator and a heater, the evaporator and the heater are embedded in a flue, the heater is arranged above the evaporator, a refrigerant outflow side port of the evaporator is connected with a refrigerant inflow side port of a compressor, a refrigerant outflow side port of the compressor is connected with a refrigerant inflow side port of a condenser, a refrigerant outflow side port of the condenser is connected with a refrigerant inflow side port of the evaporator, a white smoke eliminating hot water outflow side port of the heater is connected with a circulating hot water inflow side port of the condenser, and a circulating hot water outflow side port of the condenser is connected with a white smoke eliminating hot water inflow side port of the heater. According to the system, the evaporator is in direct contact with the smoke so that sensible heat and latent heat in the smoke are recycled; and the temperature of the cooled and dehumidified smoke is increased through the heater, the dew point temperature of the smoke is increased, the white smoke eliminating effect is achieved, and the combustion efficiency of a gas-fired boiler is effectively improved.

The invention discloses an air water making machine and a water making method. Hot air (63) is used for preheating an air intake chamber (40), the temperature of medium water in a condensate plate (10) rises after the medium water absorbs heat of hot air a (66) in the air intake chamber (40), the temperature of the temperature-rising medium water is lowered after heat of the medium water is absorbed by an evaporator (1), the temperature-lowering medium water enters the condensate plate (10) to cool the condensate plate (10), the hot air a (66) in the air intake chamber (40) is heated by a heating plate (20), the kinetic energy, the pressure and the dew point of the hot air a (66) in the air intake chamber (40) are correspondingly increased, then the hot air a (66) in the air intake chamber(40) moves upwards to encounter the cooled condensate plate (10) to be condensed into water drops, and water drops dripped by the condensate plate (10) and water drops dripped by the evaporator (1) enter a water receiving tray (30). The machine can improve the efficiency of water making in the dry air.

The invention provides an energy-saving and environment-friendly programmable constant temperature and humidity test machine, which comprises a box body, and an air circulation device, a heating device, a humidification device, a refrigeration device and a temperature adjustment device which are arranged in the box body; a test chamber and an equipment chamber are arranged in the box body, the heating device, the humidification device, the refrigeration device and the air circulation device are all arranged in the test chamber, the temperature adjustment device comprises a circuit device and apower pump connected onto the circuit device, the power pump guides normal temperature gas or liquid into the circuit device, and heat in the test chamber is taken out of the test chamber by the normal temperature gas or liquid. The temperature in the test chamber is adjusted and controlled by adding the temperature adjustment device, thereby increasing the dew point temperature, to reduce the dehumidification capacity, achieve high temperature and high humidity long-term testing, reduce the loss of electrical energy and water by the heating device and the humidification device, as well as carbon dioxide emissions, and achieve the effects of energy saving and environment protection.

The invention discloses a nonferrous smelting flue gas adiabatic evaporation cooling acid washing arsenic removal purification system and method, and the system comprises a factory, an adiabatic evaporator, an acid liquid spray tower, a rotary dust remover, a demister, a plate-and-frame filter press, an inclined plate sedimentation separator, a liquid heat exchanger, a sinter plate dust remover, a water spray tower and a waste collection pool. A carbon steel flue is arranged between the exhaust end of the factory and the air inlet end of the adiabatic evaporator, the air outlet end of the adiabatic evaporator is connected with the air inlet end of the rotary dust remover through a pipeline, and the waste end of the rotary dust remover is connected with the feeding end of the waste collecting pool through a pipeline. The air outlet end of the rotary dust remover is connected with the air inlet end of the acid liquor spray tower through a pneumatic pump and a pipeline, and the air outlet end of the acid liquor spray tower is connected with the air inlet end of the demister through a pneumatic pump and a pipeline. The problems that in the prior art, the traditional flue gas arsenic removal process is tedious, and the operation cost is high are solved. The system and the method have the advantages of simple steps, low cost and the like.

The invention discloses a combined type pressurization dehumidification system, and belongs to the field of air conditioning equipment. The system is composed of a first-stage air compressor, a primary radiator, a second-stage air compressor, a secondary radiator, a heat regenerator A, a condenser, a high-pressure water separator, a first-stage turbine, a second-stage turbine, a rotary dehumidifier, a heat regenerator B, a pressure limiting valve, a fan and a motor. After to-be-treated wet air is subjected to pressure rising and cooling twice, most water vapor in the wet air is condensed into free water. And the water is separated from the wet air through the high-pressure water separator, the treated wet air is subjected to physical adsorption dehumidification through the rotary dehumidifier again to become dry air, and finally the initial temperature and pressure are recovered after being subjected to heat regeneration and pressure relief so that the dry air can be further used. According to the system, a pressurization dehumidification mode is adopted, compared with a traditional cooling dehumidification method, the dehumidification efficiency is higher, and high-dew-point temperature dehumidification can be realized. Meanwhile, in consideration of economical performance, deep dehumidification continues to be conducted through the rotary dehumidifier, and finally the state of the low dew point temperature is achieved. The system can be applied to air dehumidification in large spaces such as a factory buildings in a high-temperature and high-humidity environment.

The invention relates to a system and method for strengthening LNG air-temperature type gasification by utilizing photovoltaic power generation and heat radiation. During the daytime, a high efficiency photovoltaic power generation system transmits current to a heating wire, the heating wire heats superconducting liquid and further heats a base in a heat conducting mode, and the base radiates heatto a gasifier; at night, a storage battery pack transmits current to the heating wire, an electrical heated tube conducts heat to the base, and the base radiates the heat to an LNG air-temperature gasifier; and an energy transfer system is arranged behind a solar back plate in the high efficiency photovoltaic power generation system to transfer waste heat behind the solar back plate to a steel plate, and the steel plate transfers the heat to the LNG air-temperature gasifier in a heat radiation mode. The system uses solar energy and the waste heat at the back of the solar panel to transfer theheat to the gasifier in a photovoltaic power generation and heat radiation mode, the power generation efficiency of the solar panel is improved, the service life of the solar panel is prolonged, thegasification efficiency of the LNG air-temperature gasifier is improved, and the phenomena of frosting and icing on the surface of the gasifier are reduced.

The invention relates to a low-humidity temperature and humidity test box, which comprises a box body, a box door is arranged on the front surface of the box body, a door handle is installed on the box door, a test room is arranged in the front part of the box body, a sample rack is installed in the test room, the box The rear part of the body is equipped with circulating fan blades, steam pipes, heaters, and evaporators in sequence from top to bottom. On the outer top, the steam pipe is connected to the humidifying boiler, the inlet end of the evaporator is connected to the condenser through a pipe, a filter is arranged between the evaporator and the condenser, the inlet end of the condenser is connected to the compressor, and the outlet end of the evaporator is respectively passed through a pipe Connect the evaporating pressure regulating valve and the four solenoid valves, and the evaporating pressure regulating valve and the four solenoid valves are set in parallel; the invention realizes that the evaporator will not freeze during long-term operation, and at the same time achieves the effect of saving energy and reducing consumption, and solves the problem that the air in the box is The problem of the effect of drying on the temperature of the laboratory.

The invention provides an anti-condensation control method. The anti-condensation control method comprises the following steps: (S10) an air conditioner is started to operate by a refrigerating mode for first preset time; and at this time, a compressor of the air conditioner is operated by a first operation frequency; (S20) after the air conditioner is operated by the refrigerating mode for the first preset time, a control system controls the compressor to reduce from the first operation frequency to a second operation frequency, and the air conditioner is in an anti-condensation operation mode; and (S30) after the compressor is operated by the anti-condensation operation mode for second preset time, the control system controls the compressor to recover the first operation frequency to solve the problem of easy condensation in an indoor unit of the air conditioner in the prior art.

A fresh air unit with an air supplying and heat recovering device relates to a fresh air unit and solves problems of counteraction between cold energy and heat energy and high energy consumption, which exist in air treating process of a reheating type air supplying system. The fresh air unit also comprises the air supplying and heat recovering device; one end of a fresh air pipeline is communicated with the air supplying and heat recovering device; two ends of a second connecting pipeline are communicated with the fresh air pipeline and an air discharging and heat recovering device; two ends of a first connecting pipeline are communicated with the air supplying and heat recovering device and the second connecting pipeline; a first air amount regulating valve is arranged on the fresh air pipeline between the second connecting pipeline and the air supplying and heat recovering device; a second air amount regulating valve is arranged on the second connecting pipeline; and an air supplying section is communicated with the air supplying and heat recovering device by a third connecting pipeline. By taking advantage of the air supplying and heat recovering device, the invention effectively solves the problem of counteraction between cold energy and heat energy and reduces energy consumption of the system.

The invention relates to a boiler flue gas waste heat recovery device. The device comprises a direct spraying type flue gas heat recovery unit communicated with a flue gas outlet of a boiler, and a rotary solid moisture absorption agent heat recovery unit; the flue gas flowing out of the direct spraying type flue gas heat recovery unit is firstly subjected to heat and mass transfer with the solid moisture absorption agent heat recovery unit, and heat and moisture of the flue gas are absorbed by the solid moisture absorption agent heat recovery unit to become exhaust smoke; then the solid moisture absorption agent heat recovery unit is rotated to be subjected to heat and mass transfer with outdoor air, and the outdoor air is heated and humidified by the solid moisture absorption agent heat recovery unit to form boiler inflow air and is sent to the boiler. The direct spraying type flue gas heat recovery unit is used for directly making contact with flue gas for heat recovery, and the solid moisture absorption agent heat recovery unit is used for carrying out heat and mass transfer with the flue gas and the outdoor air, so that the latent heat of water vapor in the flue gas is effectively recycled; the recycled heat is used for preheating returned water of a heat supply network, so that the gradient recycling of the heat of the flue gas is achieved, and the energy utilization efficiency of a heat supply system of the boiler is effectively improved.

The invention discloses a control method of a radiation fresh air conditioning system and a related device. The method comprises the steps of: obtaining an outdoor environment temperature; controlling a fresh air dehumidifier to operate according to a lowest air gear if the outdoor environment temperature reaches a first reference numerical value, otherwise, obtaining an air outlet dry ball temperature of the fresh air dehumidifier; controlling the fresh air dehumidifier to continuously operate according to the present gear if the air outlet dry ball temperature reaches a second reference numerical value and dose not reach a third reference numerical value; controlling the fresh air dehumidifier to operate after reducing the air gear to a first preset number gear if the air outlet dry ball temperature reaches the third reference numerical value; and controlling a heat pump water machine to be closed if the air outlet dry ball temperature reaches a fourth reference numerical value. The control method can effectively reduce the closing frequency of the heat pump water machine and a water value on the basis of effectively preventing generation of condensation on the radiation terminal surface, so that the refrigerating capacity can be supplied more sufficiently, and the comfort of people in rooms is improved.