146 results about "Heating energy" patented technology

The invention discloses a cold and heat supply unit and process capable of deeply utilizing a heat source in the technical field of absorption refrigeration. The cold and heat supply unit comprises a refrigerating unit, a heating unit, a heat source flash tank and a high-pressure absorber. The refrigerating unit utilizes an external heat source to produce cold energy, the heating unit utilizes the heat source used by the refrigerating unit to produce cold energy so as to cool circulating water of the refrigerating unit, and the heat source flash tank utilizes the heat source discharged by the high-pressure absorber to heat; the absorption refrigerating unit is optimally designed, so that the absorption refrigerating unit can deeply utilize a heat source and supply cold and high-level heat energy at the same time, the problem that the heat source utilization rate of the unit is not high is solved, and the requirement for high-temperature heat energy in the production process is met; and low-grade waste heat is converted into cold energy and high-level heat energy, transition and upgrading of energy quality can be achieved, the unit has the cold and heat combined supply function, and the application scene is greatly expanded.

The invention discloses an optimal scheduling method for a ground source heat pump system, and relates to the technical field of new energy utilization and intelligent control of a heat supply system.The method comprises the steps that the ground source heat pump system is divided into a tail end heat exchange layer, a water pump transmission and distribution layer and a source side heat pump coupling layer on the basis of a heat energy conversion and transmission path; constructing a response coupling relation and a mapping model; operating data of three layers of equipment are collected, a time sequence of each layer is established, a dynamic delay structure matching coefficient is calculated, and a multi-layer linkage response lag risk is identified based on a first threshold value; further monitoring a second derivative of the source side temperature change, calculating a thermal inertia interference index, and judging that the thermal response of the source side is abnormal in combination with a second threshold value; and the water supply flow of each branch is extracted, the target water supply value and the total flow of the system are combined, a flow deviation factor is calculated, flow distribution deviation is recognized according to a third threshold value, accurate strategy generation and intelligent scheduling control based on multi-parameter dynamic characteristics are achieved, and the response coordination and operation stability of the system are improved.

The invention relates to the technical field of heat energy storage and heating, and provides a refrigeration and heating integrated system based on phase change heat storage and a control method, the refrigeration and heating integrated system comprises a solar heat collection module, a heat storage oil tank, a phase change heat storage module, an absorption refrigeration module, a heating and heat supplementing module and a multi-mode control module; the multi-mode control module is used for controlling the phase change heat storage module to store heat in a heating period in response to the valley electricity time; monitoring the temperature of a heat storage oil tank in response to the non-valley electricity time, switching a heat supply mode of the system based on a comparison result of the temperature of the heat storage oil tank and a set threshold value, and controlling the phase change heat storage module to store heat or driving the absorption type refrigeration module to refrigerate in response to triggering of a user cold load demand in a cold supply period; and in response to the situation that the user cold load demand is not triggered, the heating and heat supplementing module is controlled to supplement heat to the phase change heat storage module. By integrating solar heat collection, phase change heat storage and valley electricity heat compensation strategies, efficient utilization and multi-source cooperative energy supply of clean energy are achieved.

The utility model discloses a heat recovery and utilization system and a micro-pressure steam heat energy unit, and an efficient heat energy recovery and reutilization loop is constructed through equipment such as an evaporator, a screw compressor, a condenser, an expansion valve and a flash tank. The evaporator absorbs heat from heat source water and evaporates a refrigerant into low-pressure gas, then high-temperature hot water is generated through the compression and condensation process, meanwhile, the flash tank is used for converting the high-temperature hot water into micro-pressure steam so as to meet the requirement for low-pressure steam in the system, by efficiently recycling and utilizing waste heat, the dependence of the system on external steam and electric power is reduced, and the energy consumption of the system is reduced. Therefore, energy efficiency is improved, operation cost is reduced, and energy waste and environmental influence are reduced.

The invention provides a noise isolation type heat energy transfer heating method and system, and belongs to the technical field of industrial waste heat utilization and heating ventilation air conditioning. The system comprises a waste heat fluid collecting unit, a first-stage heat exchanger unit, a middle heat transfer medium circulating unit, a second-stage heat exchanger unit and a heating circulating water conveying unit which are sequentially connected through pipelines. The system further comprises an acoustic isolation structure unit, a temperature regulation and control unit and a system supporting frame unit which are coupled with the thermal unit structure. The core of the system is that through thermal-acoustic integrated collaborative design, waste heat of heat source equipment is efficiently transferred, meanwhile, effective isolation of overall operation noise of the system is achieved through a multi-mode and multi-physical-field noise suppression mechanism, the technical contradiction that heat energy recovery and noise control are separated mutually in the prior art is solved, and the system is suitable for large-scale popularization and application. And the device is particularly suitable for heating places with strict requirements on sound environments.

The invention relates to a thermal energy storage system and method based on temperature stratification and dynamic isothermal layer control. The system comprises a pressure-resistant shell internally provided with a tower-type layered heat storage unit, the unit is composed of a plurality of heat storage cavities which are stacked up and down, and the temperature gradient with the high temperature at the upper part and the low temperature at the lower part is naturally formed by utilizing the characteristic that the water temperatures are different and the densities are different; a partition plate with a water passing structure is arranged between every two adjacent cavities so as to balance the water level and prevent turbulent flow. And each chamber is provided with a water outlet valve and a water return inlet valve which are independently controlled. According to the method, opening and closing of valves of corresponding temperature layers are dynamically controlled according to the real-time temperature of external thermal equipment through a homothermal layer control strategy, synchronous movement of a water taking layer and a water returning layer along with process temperature changes is achieved, and therefore accurate storage and taking and gradient cyclic utilization of heat energy are completed. The problems that in the prior art, a system is redundant, and the heat energy mixing and single-time utilization efficiency is low are solved, the structure is simplified, heat energy is stably stored, the energy efficiency is maximized, and the energy-saving effect is remarkable.

The invention provides a condensation-evaporation-phase change heat reservoir based on a two-stage heat pump, and relates to the technical field of heat storage and heat exchange design, the condensation-evaporation-phase change heat reservoir comprises a heat storage module, a pipeline module and a heat pump module, the pipeline module is connected with the heat storage module and the heat pump module, and the heat pump module is connected with the heat storage module. The condensation-evaporation-phase change heat storage device is coupled to the condensation side of the first-stage heat pump and the evaporation side of the second-stage heat pump and has the functions of condensation, evaporation and phase change heat storage / release, and in the heating-heat storage stage, the first-stage heat pump takes heat from a low-temperature heat source, condenses and releases heat in the condensation-evaporation-phase change heat storage device and stores heat at the same time; and in the heat release-heat supply stage, heat is released by the condensation-evaporation-phase change heat reservoir and is absorbed by the second-stage heat pump evaporator, and higher-temperature heat energy is prepared. The cascade phase change heat storage and heat pump two-stage compression are combined, the heat exchange efficiency is improved through cascade heat storage / release, and the cascade phase change heat storage heat pump has the characteristics of time-sharing operation, flexible heat supply and large temperature rise.

To provide a technique capable of accurately estimating heat energy consumption of a heat utilization facility without requiring an expensive flowmeter and without stopping a factory.SOLUTION: An estimation device (1) includes an estimation unit (11) configured to acquire a first measurement value from each of a plurality of heat utilization facilities (21 to 22) and calculate an estimation value of thermal energy consumption of each of the plurality of heat utilization facilities (21 to 22) from the first measurement value, a correction value calculation unit (12) configured to calculate a correction value from an analysis value of a drain flow rate of an entire plant (2) including the plurality of heat utilization facilities (21 to 22) calculated by a simulator (3) and an actual measurement value of the drain flow rate of the entire plant (2), and an estimation unit (13) configured to estimate the thermal energy consumption of each of the plurality of heat utilization facilities (21 to 22) by correcting the estimation value using the correction value.SELECTED DRAWING: Figure 4

The invention relates to an immersion bath for cryotherapy. The immersion bath comprises an immersion tank, which can be filled with water, for immersing a substantial portion of the body of a person, and a temperature-control device which is designed to control the temperature of a temperature-control medium and to transfer heat energy between the temperature-control medium and the immersion tank and / or the water in a heat transfer region. The temperature-control device includes a temperature-control unit which controls the temperature of the temperature-control medium, and a control device which controls the temperature-control unit. The temperature-control unit has an ice-generation mode, in which the temperature-control unit controls the temperature of the temperature-control medium in the heat transfer region to a temperature of less than or equal to 0°C, and a defrost mode, in which the temperature-control unit controls the temperature of the temperature-control medium in the heat transfer region to a temperature of greater than 0°C. The control device is designed such that it operates the temperature-control unit, upon start-up, in a repetitive temperature-control cycle in which the temperature-control unit operates alternately in the ice-generation mode and in the defrost mode.

The embodiment of the invention provides a baking waste heat recovery method and system based on multistage heat exchange, and belongs to the technical field of waste heat recovery and utilization. The method comprises the steps that exhaust operation parameters in the baking process are obtained, and a plurality of thermotechnical stages and stage identifiers corresponding to the thermotechnical stages are obtained; determining a heat grade index and a dew point difference of each thermal stage based on the stage identifier, and generating a cascade sequence and a valve position control parameter corresponding to each thermal stage; calling the corresponding cascading sequence and the valve position control parameters according to the stage identifiers to execute sequential heat exchange, and calculating to obtain a heat recovery result of each thermal stage; and according to the stage identifier and the production line rhythm, the heat recovery result is distributed to the heat utilization link according to the priority matrix, and the priority matrix and the distribution quantity are dynamically corrected based on the energy demand during stage switching. According to the scheme, dynamic matching of heat energy and self-adaptive control of condensation risks in the baking process are achieved, so that the waste heat utilization rate is increased, and the temperature field in the furnace is kept stable.

A datacenter dry cooling system and method for cooling a heat-generating source are provided. The configuration includes an evaporating pad disposed on an air-to-liquid heat exchanger panel and an evaporating cooling water distribution arrangement for applying a controlled measured amount cooling water to the evaporating pad. The applied water serves is to be evaporated while the evaporating pad is exposed to ambient airflow to dissipate thermal energy of warmed liquid received from the heat-generating sources. The evaporating pad incorporates at least one of a temperature sensor or a humidity sensor for detecting outside temperature or humidity levels. A controller communicatively-coupled to the temperature or humidity sensor controls the volume flow of the cooling water based on the detected temperature or humidity levels.

The invention discloses an intelligent heat supply energy-saving control method based on deep learning, particularly relates to the technical field of water source heat pump heat supply, and is used for solving the problems of sudden increase of invalid power consumption of a compressor and recessive attenuation of energy efficiency caused by a monitoring blind area of a water body temperature field in the prior art. The method comprises the following steps: acquiring upstream water environment parameters of a heat absorption port in real time, and generating a downstream dynamic temperature distribution state by adopting deep learning enhanced dynamic heat transfer coupling analysis; on the basis of thermal gradient vortex structure recognition and water body heat capacity supplement rate unbalance judgment, a local low-temperature area is accurately positioned; establishing an electric hydraulic frequency domain coupling relation between the heat pump operation frequency and the water body flow velocity pulsation spectrum, and quantifying the hydraulic resonance triggering probability; ineffective power consumption increment is evaluated in combination with the low-temperature region state parameters and the resonance probability; and finally, the driving frequency of the compressor is dynamically adjusted according to the condition that the invalid power consumption increment exceeds the threshold value, and the flow of the circulating pump is synchronously optimized, so that full-chain control from local low-temperature region identification to energy efficiency closed-loop optimization is realized.

The application discloses a power plant start-up stage feedwater heating energy-saving operation method, which is applied to a self-adaptive feedwater regenerative system in a thermal power plant; the self-adaptive feedwater regenerative system comprises a high-pressure heater group and a bypass steam supply branch; the bypass steam supply branch is respectively communicated with a condenser in the thermal power plant and a steam side of at least one high-pressure heater in the high-pressure heater group; during the start-up stage of the thermal power plant, the pressure value change of main steam is acquired and monitored in real time, so as to judge whether the pressure value is in a preset operation range; if yes, the bypass steam supply branch is opened, part of the main steam is introduced into the steam side of the at least one high-pressure heater in the high-pressure heater group, the feedwater flowing through the water side of the high-pressure heater is heated, and meanwhile, the remaining part of the main steam is introduced into the condenser; after the thermal power plant meets preset normal operation conditions, the bypass steam supply branch is closed, and a normal feedwater heating mode is switched synchronously.

The invention discloses a heat pump system and a waste heat recovery method, and belongs to the technical field of heat pump waste heat recovery, the heat pump system is used for recovering waste heat of a waste heat source, the waste heat source comprises a water outlet pipe and a water inlet pipe, and the heat pump system comprises a first-stage heat exchange unit, a second-stage heat exchange unit and a cold using end assembly; the first-stage heat exchange unit comprises a first condensation assembly and a first evaporation assembly, and a heating side channel of the first condensation assembly is connected with the water outlet pipe and used for receiving waste heat and heating water into high-temperature water. A cooling side channel of the first evaporation assembly is used for introducing normal-temperature water and outputting low-temperature water after the normal-temperature water is cooled; the second-stage heat exchange unit comprises a second condensation assembly and a second evaporation assembly. The two ends of a heating side channel of the second condensation assembly communicate with a cooling side channel of the first evaporation assembly and the water inlet pipe correspondingly. And the cold end assembly is in heat exchange connection with the second evaporation assembly. Waste heat can be converted into high-grade heat energy and cold energy at the same time, consumption of primary energy is reduced, and the energy utilization efficiency is improved.

The invention provides a thermal power poly-generation system integrating waste heat recovery and pump heat energy storage. The thermal power poly-generation system comprises a combined heat and power generation system, and a flue gas waste heat utilization system exchanges heat with flue gas of the combined heat and power generation system and recovers flue gas waste heat; the pump heat energy storage system comprises a heat pump and a heat storage system, the heat storage system is connected with the combined heat and power generation system and the flue gas waste heat utilization system through pipelines for heat exchange through the heat pump, and the heat storage system is further electrically connected with the combined heat and power generation system for heat storage. The flue gas desulfurization waste heat recovery system is arranged on the tail flue of the boiler, so that the flue gas waste heat can be effectively recovered, and the coal consumption of a unit is reduced; cold energy supply can be achieved through the pump heat energy storage system, meanwhile, surplus electric energy and waste heat are converted into high-temperature heat energy to be stored in a high-temperature storage tank, the high-temperature heat energy is released when needed to generate steam, the steam is reinjected into a steam turbine thermodynamic system, the thermoelectricity operation interval is widened, the unit variable load rate is increased, and the power generation efficiency is improved. The operation regulation capability of the combined heat and power generation system is enhanced, and more flexible regulation and control means are provided.

An integrated underground heat storage and heat transfer system is provided for CO2-based heating and cooling installations. The invention enables both energy storage and heat exchange in a single Underground Thermal Energy Storage (UTES) system. Excess heat produced during warm weather heats the ground to relatively high temperatures, which in cool weather serves as an artificial geothermal source. A geothermal heat pump (GHP) system reclaims this heat during cool weather. When the GHP is reversed in warm weather, the rejected heat is sent to a separate loop installed in cold earth.

This invention relates to the field of low-grade thermal power generation technology, and more particularly to a Karina cycle power generation system based on an ORC working fluid pair and its application. The system includes a power generation unit with a circulating working fluid consisting of a first low-boiling-point component and a second high-boiling-point component. An external heat source is introduced into the heat exchange unit to heat the working fluid. A phase change separation unit separates the heated working fluid into a gas phase branch and a liquid phase branch. The gas phase branch is connected to a turbine expander to convert thermal energy into electrical energy. A control device acquires external heat source temperature distribution data and real-time phase change temperature data of the working fluid through a status acquisition module. A temperature difference calculation module generates heat exchange temperature difference data including temperature deviation values. A circulation control module receives the heat exchange temperature difference data and outputs flow regulation commands to a pressurized pumping unit to adjust the circulating flow rate of the working fluid, reduce the heat exchange temperature difference, and improve the thermoelectric conversion efficiency.

This invention related to a system configured to circulate a thermal fluid in a circulation loop connected to at least one flow control valve, where the system includes the thermal fluid; one or more heat exchangers; at least one flow control valve configured to redirect a thermal fluid flow to contact the heat exchanger connected to one or more thermal elements; and a controller configured to set states of the flow control valves to configure a thermal fluid path and control transfer of thermal energy from the thermal elements. This invention also related to a method for circulating a thermal fluid in a circulation loop connected to at least one flow control valve.

The utility model discloses a cement clinker bleaching device which comprises a machine body, a feeding pipe is installed at the top of the machine body and communicated with an external rotary kiln, bearings are arranged on the left side and the right side of the machine body respectively, and a first stirring shaft and a second stirring shaft are arranged on the bearings on the two sides respectively. According to the cement clinker bleaching device, the heating cavity is formed in the bleaching machine, the cold water is injected into the heating cavity, the cold water can absorb heat carried by clinker in the bleaching process, and heat can be supplied to equipment such as a boiler after the cold water absorbs heat, so that the utilization rate of waste heat of the clinker is increased, and further, the utilization rate of waste heat of the clinker is increased. After the clinker is bleached, the temperature of the clinker is still 200 DEG C or above, residual waste heat in the clinker can be recycled again through a subsequent waste heat recycling assembly, and the recycled heat energy is directly fed into a kiln opening of the rotary kiln to be used by the rotary kiln.

The invention relates to a defrosting method and device of a hot water unit, the hot water unit and electronic device.The method comprises the steps that the defrosting duration of a current defrosting period is determined on the basis of a target factor and the defrosting duration of a previous defrosting period, the target factors comprise the heat exchange capacity attenuation rate of the hot water unit and the heating energy efficiency ratio of the hot water unit; wherein the defrosting duration of the first defrosting period is a first preset duration; the environment temperature of the environment where the hot water unit is located and the defrosting temperature of the hot water unit in the current defrosting period are obtained; the compressor frequency of the hot water unit is determined based on the temperature difference between the environment temperature and the defrosting temperature; and within the defrosting duration of the current defrosting period, the hot water unit is defrosted according to the determined compressor frequency. By means of the defrosting control method and device, the problem that in the prior art, defrosting control of the hot water unit is achieved through the defrosting condition set at the fixed environment temperature, and consequently the defrosting effect is poor is solved.

Provided is a refrigeration apparatus (100), in which a refrigerant and an adsorbent circulate, comprising a compressor (131), a decompression mechanism (132), a first heat recovery unit (133), a second heat recovery unit (134), and a control unit (105). The first heat recovery unit (133) recovers hot heat generated when the adsorbent adsorbs the refrigerant. The second heat recovery unit (134) recovers cold heat generated when the adsorbent desorbs the refrigerant. The first heat recovery unit (133) has a first heat transfer tube (133a) through which a mixture of the refrigerant and the adsorbent passes. The control unit (105) changes at least one of the rotation speed of the compressor (131) and the throttle amount of the decompression mechanism (132), and, when changing the capacity of the second heat recovery unit (134) from a first capacity to a second capacity larger than the first capacity, increases the area ratio of the refrigerant occupying a first cross section C of a second heat transfer tube (134a).

An air source heat pump defrosting control method suitable for different climate zones belongs to air source heat pump defrosting control methods, and adopts the specific scheme as follows: when an air source heat pump is applied to different climate zones, the temperature difference between outdoor air and the surface of an outdoor coil pipe is continuously monitored during frostless stable operation of a unit; and matching with a frostless temperature difference threshold value of the air source heat pump at the outdoor temperature corresponding to each climate zone, reversely deducing the climate zone where the air source heat pump is located, and further performing defrosting control by adopting a defrosting starting temperature difference control line of the climate zone. According to the defrosting control method, the climate area where the air source heat pump is located can be automatically recognized, and the reasonable defrosting starting temperature difference control line is selected, so that the defrosting accuracy of the air source heat pump can be greatly improved, the heating performance coefficient of the air source heat pump when the air source heat pump is applied to different climate areas is improved, the heating energy consumption of a building and the mistaken defrosting frequency are reduced, and the heating efficiency of the building is improved. And the interference of defrosting on the indoor thermal comfort of the building is reduced.

The invention discloses a temperature follow-up multi-objective optimization temperature control method, which comprises the following steps of: setting system parameters, and configuring temperature control parameters which comprise a temperature control lower limit, a temperature control upper limit, a temperature acquisition and temperature control judgment period and a temperature measurement effective range; real-time data acquisition and analysis are carried out, and effective temperature data are screened out; judging the type of a temperature control interval, acquiring the maximum temperature from the effective temperature data, and judging the current temperature control state interval of the system according to the maximum temperature; and based on the judgment result of the temperature control state interval, dynamically setting a temperature control target for each temperature control object, and controlling the on-off state of a heater of each temperature control object according to the temperature control target. According to the temperature control method provided by the invention, the temperatures of a plurality of temperature control objects are monitored, the highest temperature in the system is identified, and the temperature control target values of the objects are dynamically adjusted in a zoning manner by combining the temperature control upper and lower limits and the temperature consistency deviation, so that collaborative optimization of multi-target temperature consistency and heating energy consumption is realized.

The application discloses a composite cooling system which comprises a heat exchanger and a refrigeration system. The composite cooling system comprises the heat exchanger for exchanging cold and heat energy and the refrigeration system connected with the heat exchanger for forming a main refrigeration cycle and a secondary refrigeration cycle. The refrigeration system comprises at least one expansion valve. By controlling the expansion valve, the cold energy generated by the main refrigeration cycle can be used to perform secondary heat dissipation on a high-heat-source through the heat exchanger, and the secondary refrigeration cycle can be used to dissipate heat of other heat sources. The heat exchanger has a cold end inlet, a cold end outlet, a hot end inlet and a hot end outlet. The cold end inlet and the cold end outlet are in communication. The hot end inlet and the hot end outlet are in communication and are not in communication with the cold end inlet and the cold end outlet. The refrigeration system comprises an expansion valve, a heat dissipation unit and a compressor. The expansion valve is connected with the cold end inlet. The heat dissipation unit is connected with the expansion valve. The compressor is connected with the heat dissipation unit and the cold end outlet.

The utility model discloses a central heating energy station in northern areas, which belongs to the field of heating energy systems and comprises a valve body and an ACS air source heat pump unit group. The ACS air source heat pump unit group is communicated with a Heat electric heater and a WM flowmeter through a pipeline; the Heat electric heater is communicated with the EST energy storage tank through a pipeline, and the Heat electric heater is further sequentially communicated with a DV1 conversion valve group, a heat meter HM and a V1 tail end water supply hand valve through pipelines; the WCS water source heat pump is communicated with an EST energy storage tank through a pipeline, and an evaporator of the WCS water source heat pump is further communicated with a WM flowmeter through an ASCP source side circulating pump and an SV2 check valve in sequence. The utility model aims to solve the problems of stable heat supply during concentrated defrosting of air sources in high-humidity weather and capability attenuation of compensating air sources at night in low-temperature weather.

The invention discloses a photovoltaic photo-thermal energy storage heating system. The electric heating rod serves as a main part of the heating assembly, is heated through the resistance wire, converts electric energy into heat energy and is started when photo-thermal energy storage is insufficient, so that the heating water temperature is maintained, the temperature controller detects the water temperature in the heating box in real time through a built-in PT100 thermal resistor, a power source is automatically switched on when the water temperature is lower than a set value, and the power source is switched off when the water temperature is higher than the set value. The constant temperature control is achieved, meanwhile, energy waste caused by continuous heating is avoided, a part for conducting auxiliary heating on the device is installed at the heating water supply position of the device, the purpose that hot water is heated according to needs before being conveyed to the tail end in continuous cloudy and rainy days and extremely low temperature weather can be achieved, the heating assembly is started and stopped according to needs by monitoring the temperature, and the heating efficiency is improved. Energy loss caused by repeated heating of stored water is avoided, the device can supplement heat when photo-thermal heat collection is insufficient, and heating stability is ensured.

This utility model discloses a condensation-reheat type gas whitening device, belonging to the field of humid gas whitening technology. It includes: a hydrophobic storage system for storing steam condensate from a hydrophobic pipe and outputting high-humidity gas from the steam condensate; a condensation system connected to the hydrophobic storage system for condensing and drying the high-humidity gas output from the hydrophobic storage system into saturated humid gas before output; and a reheating device connected to the hydrophobic storage system and the condensation system for cooling the steam condensate output from the hydrophobic pipe before inputting it into the hydrophobic storage system, and simultaneously heating the saturated humid gas output from the condensation system to form unsaturated high-temperature gas before discharge. This application utilizes heat exchange between the saturated humid gas and the steam condensate in the reheating device, which can effectively reduce the temperature of the steam condensate entering the hydrophobic storage system, thereby mitigating the degree of flash evaporation of the steam condensate.

The invention discloses a frostless heating and refrigerating air source heat pump which comprises a fin air heat exchanger, a circulating water heat exchanger and a compressor throttling assembly. A cooling tower filler is arranged above the fin air heat exchanger, a spray header is arranged above the cooling tower filler, an air outlet water baffle is arranged above the spray header, and an exhaust fan is arranged above the air outlet water baffle; an air inlet is arranged below the fin air heat exchanger, and a liquid storage tank is arranged below the air inlet; the anti-freezing solution in the liquid storage tank is conveyed to the spraying head through the spraying water pump and the spraying pipeline; and liquid level meters are arranged at different liquid level heights in the liquid storage tank. Frosting is avoided during operation in winter, extra heat energy is not paid for defrosting shutdown any more, the higher the humidity of the operation environment is, the larger the heating capacity of the unit is, and the higher the energy efficiency ratio is; heating in winter can be efficiently and stably carried out at the environment temperature of-30 DEG C or above; the refrigeration coefficient in summer is the same as that of a water-cooling unit, and efficient and stable operation can be achieved in extremely hot weather of 40 DEG C or above.

We provide a sauna stove with a simple configuration that supplies appropriate humidity to the sauna room. [Solution] The sauna stove 1 comprises a heater element 2 for heating the sauna room, a metal housing 3 for housing the heater element 2, and a metal water storage container 6 attached to the outer surface of the housing 3, having an opening 5 at the top and storing water W inside. Therefore, the thermal energy of the housing 3 heated by the heater element 2 can be transferred to the water storage container 6, thereby heating the water storage container 6. As a result, the water W inside the water storage container 6 is heated, and steam can be supplied into the sauna room through the opening 5.

This invention discloses a method for regulating the operation of a low-temperature return water cogeneration heating system, comprising: determining the minimum supply water temperature t0 of the system; when the heating load is greater than the load threshold Q0, using a quality regulation method, the system operates at the maximum circulating water volume, and the supply water temperature gradually decreases from the design temperature to the minimum supply water temperature t0; when the heating load is less than or equal to the load threshold Q0, using a quantity regulation method, the circulating water volume can be changed within a set range to maintain the supply water temperature at the minimum supply water temperature t0; calculating the equivalent heating power of each stage of steam and each operating condition; using the lowest weighted equivalent heating power w of the power plant as the sorting principle, determining the steam extraction sequence and steam volume of each unit during the heating load change process. This invention achieves refined regulation of power plant heating, incorporating power plant circulating water volume, supply water temperature, heating steam matching, and unit back pressure into the heating regulation scope on the basis of traditional simple quality and quantity regulation, thereby optimizing the power plant's heating energy consumption.