124results about How to "Lower the water temperature" patented technology

The invention relates to water circulation systems, in particular to a water circulation system which can control hydrochemistry and meet high temperature and high pressure conditions, and solves problems such as the measurement and the control of a hydrochemistry parameter in the high temperature and high pressure water circulation system and the like. The system mainly consists of two loops; a primary loop is in a normal temperature and pressure state; through continuous circulation in the primary loop, the conductivity of water can be caused to reach a needed index; dissolved oxygen content and dissolved hydrogen content in the water can be comparatively precisely controlled; the PH value and temperature changes of the water can be detected in an on-line manner; and solutions containing special ions can be added in the primary loop according to the needs of an experiment; a high pressure pump and a preheater in a secondary loop can cause water in an autoclave to reach a state of high temperature and high pressure (320 DEG C, 12 MPa), and simulate practical service environments (such as a nuclear power high temperature water environment) to conduct an environment damage experiment on a material; and after heat transfer and cooling, water out of the autoclave can return to the primary loop to be continuously recycled and used.

The invention discloses a dual-control thermostatic valve core, which comprises an outer valve body, the outer valve body is in the shape of steps, a water temperature adjustment mechanism is installed on the upper end of the outer valve body, and an inner valve body matched with the inner valve body is set on the lower end of the water temperature adjustment mechanism. The two sides of the lower end of the valve body are respectively provided with a cold water inlet and a hot water inlet. The inside of the inner valve body is provided with a cold water flow channel and a hot water flow channel separated from each other. There is a boss, the outlet of the hot water flow channel is set on the upper end of the boss, and the center of the inner valve body is provided with a mixing chamber for mixing hot and cold water. The water temperature adjustment mechanism includes a water temperature adjustment valve core, which is inserted in the mixing chamber It moves up and down under the effect of water temperature to adjust the ratio of cold water and hot water entering the mixing chamber to adjust the water temperature in the mixing chamber. The dual-control thermostatic valve core has a simple structure and can simultaneously adjust the outlet water temperature and the outlet water flow rate.

The invention discloses a cooling water tank for a passive containment cooling system. The cooling water tank comprises a state monitoring and water supplementing system and a closed box body arrangedon the outer side of a reactor containment wall body capable of realizing automatic heat management, wherein the state monitoring and water supplementing system is used for monitoring the state of cooling water in the closed box body and supplementing water according to the state; the closed box body is connected to a heat exchanger arranged on the inner side of the reactor containment wall bodythrough a circular pipeline; the closed box body is divided into at least two water body units through a water body partition plate, and the water body units are connected to an overflow outlet and anincoming flow inlet; and the effluent circular pipeline of the closed box body and the return circular pipeline of the closed box body are separately connected to the two different water body units.The cooling water tank provided by the invention has the beneficial effects that cooling return water is layered for heat management through the water body units, and a low-temperature cooling water source can be provided to the system put into operation all the way, so that the system can obtain a relatively high natural circulating ability and heat exhaust power.

The invention relates to a jet type evaporation cooler with low water outlet temperature. The jet type evaporation cooler comprises a filler, a cooling water coil pipe and a fan, wherein the filler is arranged below the cooling water coil pipe; the lower side of the filler is connected with a jet cooling device through a water baffle plate; the jet cooling device comprises a water tank, a water pump, a water segregator, spraying pipes, nozzles and a water receiver; the spraying pipes are respectively arranged on two sides on the upper side of the water tank and connected with the water tank through the water segregator and the water pump; a plurality of nozzles are arranged on the spraying pipes; and the water receiver is arranged in the middle of the jet cooling device. By the jet type evaporation cooler with low water outlet temperature, air is cooled and depressurized by water jetted by the nozzles and then enters the coil pipe region on the upper part; the temperature of circulating water is greatly reduced by increasing the ventilating amount through the high-power fan; therefore, scaling is avoided, and the water outlet temperature is relatively low; and furthermore, the cooler can adapt to different running modes in different seasons.

The invention discloses an air-conditioning system with combined operation of evaporative cooling, cold water storage and night ventilation. The air-conditioning system comprises a machine unit shell, wherein a fresh air inlet is formed in one side wall of the machine unit shell; an air conveying port is formed at the lower part of the side wall, opposite to the fresh air inlet, of the machine unit shell; a cold water / cold air machine unit for the evaporative cooling is arranged inside the machine unit shell; a cold water storage tank and a user side are arranged outside the machine unit shell; and the cold water / cold air machine unit for the evaporative cooling, the cold water storage tank and the user side are connected with one another through a pipe network. According to the air-conditioning system provided by the invention, the cold water / cold air machine unit for the evaporative cooling can be started at night to make cold water and cold air by virtue of a power trough and electricity price difference, the cold water is stored in the cold waster storage tank and is supplied to a user at daytime, the cold air is supplied into a room directly to exchange hot air stored in the room, and then the cold load in the room is decreased.

The invention discloses a heat exchange device of a cooling tower. The heat exchange device comprises a splashing mechanism and a filling mechanism, wherein the splashing mechanism comprises a water distribution system and a nozzle cluster; a water inlet and multiple water outlets are formed in the water distribution system; the nozzle cluster comprises a first group of nozzles, a second group of nozzles and a third group of nozzles; a cooling plane formed by the first, second and third groups of nozzles is vertically intersected with the axis of a tower barrel; the cooling plane comprises a central area in which the first group of nozzles are arranged, an inner area in which the second group of nozzles are arranged and a peripheral area in which the third group of nozzles are arranged; the central area, the inner area and the peripheral are all annular and are arranged at the central area, the inner area and the peripheral area along the radial direction of the tower barrel in sequence; the filling mechanism comprises a first area, a second area and a third area which are arranged along the radial direction of the tower barrel in sequence; the first area and the second area are corresponding to the projections of the central area and the inner area in the axial direction of the tower barrel respectively; the spraying density of the first area is smaller than that of the second area. According to the heat exchange device, the cooling efficiency of the cooling tower can be improved.

The invention discloses a floor heating system temperature adjusting method and device. The method includes: collecting current indoor temperature; comparing the current indoor temperature with a preset floor heating environment temperature to acquire a comparison result; judging whether the comparison result meets preset conditions or not; under the condition that the comparison result meets the preset conditions, controlling units of a floor heating system to reduce hot water temperature of a ground source heat pump of the floor heating system. The problem about high energy consumption of the floor heating system in the prior art is solved, and the energy-saving effect is achieved.

The invention relates to an air conditioning system combined by a closed heat source heat pump and evaporative cooling, which comprises a closed heat source tower, a cold accumulation water tank, an air conditioning tail end device and a heat pump set which are connected by a water pipe network, wherein the closed heat source tower is communicated with an air conditioning room through an air duct group. The air conditioning system combined by the closed heat source heat pump and evaporative cooling provided by the invention solves the problems that an evaporative cooling air conditioning set stands idle in winter and the cooling amplitude is limited.

The invention discloses a desalinating technique of seawater through water source heat pump under negative pressure condition, wherein the system is composed of seawater source heat pump, jet vacuum pump, generator and pump; a lower pressure condition is formed in the generator to evaporate the seawater with temperature elevated; the steam is leaded into next generator acted by jet vacuum pump to release potential heat and evaporate seawater, which realizes the utilization effectively; the steam condensate is extracted from the generator to product fresh water. The invention improves the energy utilizing efficiency as heat supplying equipment in winter, which releases the heat pollution of circulating condensate of electric factory due to low temperature of outlet water of seawater source heat pump evaporator and system generator.

The invention discloses an air source heat pump water heater which comprises an evaporator (4), a compressor (1), an air cooler (2) and a throttling device (3) which are connected sequentially so as to form a circulating loop. One end of the air cooler is provided with a cold water inlet (21), and the other end of the air cooler is provided with a hot water outlet (23). The air source heat pump water heater also comprises a water collecting disc (6) and a pipeline (7), wherein the water collecting disc (6) is arranged on the bottom of an evaporator; the pipeline (7) is arranged in the water collecting disc and is used for refrigerant circulation; the water collecting disc is connected with a water drainage pipe (8); one end of the pipeline is connected with a refrigerant outlet (22) of the air cooler, and the other end of the pipeline is connected with an input end (31) of the throttling device (3). High-temperature high-pressure gas refrigerants compressed by the compressor in the air cooler exchange heat with cold water, are transformed to middle-temperature high-pressure liquid refrigerants, and flow through the water collecting disc at the bottom of the evaporator through a pipeline; ice is removed by utilizing the residual heat of the liquid refrigerants; and the favorable ice removing effect can be realized while the outlet water temperature of the water heater can not be lowered.

The invention discloses a multi-stage efficient evaporative cooling water-chilling unit. The multi-stage efficient evaporative cooling water-chilling unit comprises a unit shell. A split packing type direct evaporative cooling unit is arranged in the center of the unit shell. A first packing-heat exchange tube combined evaporative cooling unit and a second packing-heat exchange tube combined evaporative cooling unit are arranged on the left side and the right side of the split packing type direct evaporative cooling unit correspondingly. An air inlet a is formed in the position, corresponding to the first packing-heat exchange tube combined evaporative cooling unit, of the side wall of the unit shell, and a high-temperature surface air cooler a is arranged between the first packing-heat exchange tube combined evaporative cooling unit and the air inlet a. An air inlet b is formed in the position, corresponding to the second packing-heat exchange tube combined evaporative cooling unit, of the side wall of the unit shell, and a high-temperature surface air cooler b is arranged between the second packing-heat exchange tube combined evaporative cooling unit and the air inlet b. Both the high-temperature surface air cooler a and the high-temperature surface air cooler b are connected with the split packing type direct evaporative cooling unit. The multi-stage efficient evaporative cooling water-chilling unit has the advantages that the height is small, the heat exchange efficiency of vertical tubes is high, the outlet water temperature is low, and the outlet water cleanliness is high.

The invention provides a split type cooling system and method for an engine. The system comprises a cylinder body water jacket, a cylinder cover lower water jacket and a cylinder cover upper water jacket which are arranged around an engine cylinder body. The cylinder cover lower water jacket of the engine is connected with the cylinder cover upper water jacket in series. The cylinder body water jacket is connected with the cylinder cover lower water jacket and the cylinder cover upper water jacket in parallel after the cylinder cover lower water jacket and the cylinder cover upper water jacketare connected in series. Cooling liquid passes through a water pump, then flows into the cylinder cover upper water jacket through the cylinder cover lower water jacket and is mixed with cooling liquid of the cylinder body water jacket and cooling liquid of an engine oil cooler in an electronic thermostat installation cavity, and then the mixture is redistributed. A first temperature sensor is arranged on an electronic thermostat. A radiator is connected with the water pump. A second temperature sensor is arranged at a radiator cooling liquid outlet. According to the split type cooling systemand method for the engine, the consumed power of an electronic fan is effectively reduced, so that power consumption of the engine is reduced, and the fuel economy is improved.

The embodiment of the invention discloses a whole set of ice storage tank equipment. The equipment comprises an ice storage tank equipment body, the ice storage tank equipment body comprises a heat preservation box body and a box cover arranged at the upper end of the heat preservation box body, wherein the heat preservation box body comprises an outer layer, a middle layer and an inner layer, a first coil pipe bracket is arranged in the heat preservation box body, a first coiled coil pipe and a second serpentine coiled pipe are arranged in the first coiled pipe bracket, further comprises an air disturbance device, the air disturbance device comprises an air pump, the air pump is positioned outside the heat preservation box body, the air pump is connected with an air inlet pipeline, the air inlet pipeline penetrates through the box cover and is communicated with a gas conveying main pipe arranged at the bottom of the heat preservation box body, the gas delivery main pipe is communicated with a PVC pipeline arranged at the bottom of the heat preservation box body through a gas delivery branch pipe, further comprises an air outlet pipeline, one end of the air outlet pipeline penetrates through the box cover and is located on the upper portion of the heat preservation box body, and the other end of the air outlet pipeline is communicated with the air pump. The equipment has the advantages of being high in heat exchange efficiency, safe and reliable, and capable of effectively improving the ice making and ice melting rates of ice storage equipment.

The invention relates to an evaporative cooling air conditioning system combining roof spraying cooling and night cold storage. The air conditioning system comprises an outdoor evaporative cooling air conditioning unit. The outdoor evaporative cooling air conditioning unit is connected with a roof water storage tank, a room terminal device disposed in a house and a cold storage water tank outside the house through a water pipe network. The outdoor evaporative cooling air conditioning unit is communicated with the inside of a room through an air supply pipe. The outdoor evaporative cooling air conditioning unit has the advantages that the roof water storage tank effectively lowers cold load formed through roof heat transfer in the daytime, the room is cooled by the cold water in the water storage tank, and the evaporative cooling air conditioning unit is started when the cold water cannot satisfy the cooling requirements; cold storage can be performed by fully utilizing the advantageous weather conditions, the obtained cold water is stored for being used in the daytime, and cooling is performed by fully utilizing low power prices, and operation cost is lowered; in the meantime, by the cold air provided by the evaporative cooling air conditioning system at night, ventilation, cooling and cold storage of the room can be achieved, and cooling time of the room the next day can be postponed.

The invention relates to a mechanical ventilation air cooling tower which is mainly used in an industrial circulating water cooling process of the chemical industry, the metallurgy industry, the electric power industry and other industries. The mechanical ventilation air cooling tower comprises a tower body (1), a draught fan (2), a dry type air cooling radiator (3), a water inlet pipeline (7) and a water outlet pipeline (8), wherein the dry type air cooling radiator (3) is perpendicularly arranged on the periphery of the tower body (1), a wet type air cooling radiator (4) and a spray nozzle (5) are arranged inside the tower body (1), the wet type air cooling radiator (4) is horizontally arranged, the spray nozzle (5) is arranged above the wet type air cooling radiator (4), and a water collecting tank (6) is arranged below the wet type air cooling radiator (4) and connected with the spray nozzle (5) through a water spraying device (9). The mechanical ventilation air cooling tower has the advantage that when the environment temperature is quite high in summer, the water outlet temperature of circulating water can be lowered.

The invention provides an air conditioner cooling water system comprising a cooling tower, a cooling water outlet pipe and a cooling water returning pipe. The cooling water outlet pipe and the cooling water returning pipe communicate with the cooling tower. The air conditioner cooling water system is used for utilizing cooling water in the cooling tower to exchange heat with a condenser and characterized by further comprising an auxiliary heat exchanger and an auxiliary switch; the auxiliary heat exchanger is used for cooling inlet air of the cooling tower; and the auxiliary switch is used for controlling the working state of the auxiliary heat exchanger. The air conditioner cooling water system is provided with the auxiliary heat exchanger, the inlet air of the cooling tower is cooled by utilizing the auxiliary heat exchanger, and accordingly the water outlet temperature of the cooling water of the cooling tower is decreased. When the outdoor wet bulb temperature is low, the water outlet temperature of the cooling water of the cooling tower can be decreased with the outdoor wet bulb temperature synchronously or further decreased below the outdoor wet bulb temperature, the energy efficiency of the air conditioner cooling water system is improved, and energy waste is avoided.

The invention discloses a gas water heater. The gas water heater comprises a heat exchanger and a water mixing water path; the heat exchanger is connected with a water incoming pipe and a water outgoing pipe, so that a water path can be formed; the water mixing water path is connected with the heat exchanger in parallel and provided with a control valve for controlling the opening and closing of the water path; and the water incoming pipe is provided with a pump for adjusting water incoming flow speed. The invention further discloses a control method of the gas water heater. According to the gas water heater of the invention, when the required heat load of the gas water heater is smaller than the minimum set value of the heat load, inflow water of the heat exchanger of the gas water heateris shunted, or the flow speed of the heat exchanger of the gas water heater is increased; and the gas water heater is controlled to operate at temperature larger than the minimum set value of the heat load. With the control method adopted, the gas water heater can adjust the temperature of outflow water which has been subjected to combustion heat exchange through the increased water flow speed, and therefore, the gas water heater is suitable for a working condition having a low-heat-load requirement, and the use range of the gas water heater is widened.

The invention discloses a water heating system and a control method thereof. The water heating system comprises a gas-fired water heater, an electric water heater, a cold water pipe and an instant-heating constant-temperature water mixing valve, wherein a hot water outlet of the gas-fired water heater is connected with a water inlet of the electric water heater through a hot water pipe; one end of the cold water pipe is connected with a municipal water supply, and the other end of the cold water pipe is connected with a cold water inlet of the of the gas-fired water heater; the instant-heating constant-temperature water mixing valve is provided with a hot water inlet and a cold water inlet, the hot water inlet is connected with a water outlet of the electric water heater, and the cold water inlet is connected with the other end of the cold water pipe; the instant-heating constant-temperature water mixing valve is used for heating water flow at the hot water inlet when the temperature of water at the hot water inlet is lower than the set temperature of the gas-fired water heater and carrying out constant-temperature control over the heated water flow. The water heating system enables the water temperature to be more accurate, and therefore the purpose of stepless temperature adjustment is realized. Even though hot water is used for the first time, the outlet water temperature at the water use spot is not too low, water use comfort is improved, and user experience is improved.

The invention discloses a water-side evaporation cooling system for an auxiliary mechanical refrigeration. The water-side evaporation cooling system comprises an indirect evaporation cooling water chilling unit, wherein the indirect evaporation cooling water chilling unit is connected to a plate type heat exchanger through a circulating water pipe A to form a closed pipe loop; the plate type heatexchanger is sequentially connected to an air cooling water chilling unit and an air conditioner tail end through a circulating water pipe B to form a closed pipe loop; and a circulating water pipe Cis further arranged on the circulating water pipe B, and the circulating water pipe C is connected to the indirect evaporation cooling water chilling unit. According to the water side evaporation cooling system, different running modes are adopted for different seasons, a water side evaporation cooling technology and an ethylene glycol natural cooling technology are fully utilized, the full-year operation cost of a data center is reduced, the use energy consumption is low, the whole refrigeration system can stably supply cold for a data machine room in the whole year, and good practical valueis achieved.

The invention discloses a constant-temperature and constant-flow valve element with a linkage dividing function. The constant-temperature and constant-flow valve element with the linkage dividing function comprises a valve element shell, a temperature-sensing piston assembly, a valve element base and a dividing assembly. The valve element shell, the valve element base and the dividing assembly are sequentially connected to form a mixed water channel inside. The temperature-sensing piston assembly is accommodated in the mixed water channel, and one end of the temperature-sensing piston assembly abuts against the dividing assembly. A cold water inlet gap is formed between the valve element shell and the temperature-sensing piston assembly. A hot water inlet gap is formed between the valve element base and the temperature-sensing piston assembly. A hot water dividing gap is formed between the dividing assembly and the valve element base. Hot water is divided into a first path of hot water at the hot water inlet gap and divided into a second path of hot water at the hot water dividing gap.

The invention discloses a natural ventilation counter flow cooling tower. The cooling tower comprises a tower shell (1). An air inlet flow guide plate (2) and a flow guide circular truncated cone (6)are arranged in the tower shell (1). A cylinder segment (8), a circular ring segment (9) and a water retaining segment (10) which are sequentially connected from inside to outside are contained in theair inlet flow guide plate (2). According to the natural ventilation counter flow cooling tower, cold air of the cooling tower air inlet area is layered by means of the air inlet flow guide plate, meanwhile, the flow rates of cold air entering the side portion and the center area of the cooling tower are regulated by regulating the height of the air inlet flow guide plate, control over differentflow rates of different areas is achieved, impeding of a rainfall area on the airflow of the center area is eliminated, and the flow speed of the air of the center area is increased; and vertical steering of airflow in the center of the bottom of the cooling tower is achieved, the flowing speed of the airflow in the center is increased, the cooling strength of the center area is improved, the uniformity and stability of the temperature of cooling water of the cross section of the cooling tower are achieved, and the cooling efficiency of the cooling tower is improved.

The invention discloses a gas water heater and a control method, a computer readable storage medium, and a heating supply system. The gas water heater includes a heat exchange system, a combustion system used for heating the heat exchange system, a first temperature sensor, and a controller, the heat exchange system is provided with a hot water inlet, a cold water inlet, and a mixed water outlet,and the first temperature sensor is disposed on the hot water inlet; The control method of the gas water heater includes the following steps: the first temperature sensor detects an inlet water temperature at the hot water inlet; when the inlet water temperature is lower than a preset target temperature, the controller controls the combustion system to burn; and the controller controls water inletof the cold water inlet when the inlet water temperature is higher than the target temperature. According to a technical scheme, occurrence of an excessive high phenomenon or an excessive low phenomenon of the target temperature can be avoided.

The invention provides a drip type coffee machine which comprises a water tank, a heating pipe assembly and a brewing funnel; the water tank is connected with the first end of a heating pipe of the heating pipe assembly through a first pipeline; the brewing funnel is connected with the second end of the heating pipe of the heating pipe assembly through a second pipeline, so that water in the water tank flows into the brewing funnel; and a narrow flow area of which the cross-sectional area of at least part of the inner diameter is smaller than that of the internal diameter, close to the lower section of the heating tube, of the first pipeline is arranged at the upper section, close to the water tank, of the first pipeline. The drip type coffee machine further comprises at least one water outlet pipe, a water outlet is formed in the water tank, one end of the water outlet pipe is connected with the water outlet, and a control switch is arranged on the water outlet; and the other end of the water outlet pipe is communicated with the lower section of the first pipeline. Through the drip type coffee machine provided by the invention, the problems of high pre-stage water level, high pressure, high flow rate, low temperature, low post-storage water level, medium pressure, low flow rate and high temperature in the water boiling process are effectively solved; and furthermore, the drip type coffee machine provided by the invention is simple and practical in structure.

The invention discloses a cool storage air conditioning device based on the combination of evaporative cooling and a water curtain outer wall. The device comprises an evaporative cooling air conditioner unit, a room tail end device, a reverse flow heat exchanger, a cool storage water groove and a water curtain outer wall module which are connected through a pipe network. According to the cool storage air conditioning device based on the combination of evaporative cooling and the water curtain outer wall, water in the water curtain outer wall in the daytime can flow in a circulating mode and take away solar radiant heat on the surface of a building, cooling load formed due to external envelope structure heat transmission is lowered, at night, a system can fully use advantages at night for carrying out cool storage, obtained low-temperature water is stored in an underground cool storage water groove and is used in the daytime, obtained cold air is used for cooling a room in a ventilation mode and cool storage, the time of cooling the room on the next day can be prolonged, and the device has the advantages that energy is saved, environment is protected, and economy is achieved.

The invention belongs to the field of household appliances, and particularly relates to a continuous heating type pressure-stabilizing water heater. The water heater comprises a box body, and the upper end and the lower end of the box body fixedly communicate with a water inlet pipe and a water outlet pipe respectively; the inner side wall of the box body is in sealed sliding connection with a heating groove, and the density of the heating tank is less than that of water; the inner bottom surface of the heating groove is provided with a heating device, the bottom surface of the heating grooveis provided with a through hole, and the inner side wall of the heating groove is in sealing sliding connection with a heat insulation plate; the heat insulation plate is internally provided with a sealing hole, the inner bottom surface of the heating groove is fixedly connected with a sealing column, and the sealing column penetrates through the sealing hole; and threads are arranged on the sidewalls of the sealing column and the sealing hole, and the sealing column is in threaded connection with the heat insulation plate. According to the water heater, a memory spring can be extended or shortened through temperature control, so that the opening and closing of the sealing hole are controlled, and it is ensured that the water pressure in a water tank is stable; and hot water can be provided for a user continuously and rapidly, and meanwhile, the temperature of hot water can be ensured.

The present invention discloses a control circuit of an intelligent water dispenser. The control circuit comprises a control panel, a main switch, an electric heating device, a water level switch, an electromagnetic valve and a DC motor; and the control panel is integrated with a power control plate, a display panel and a keypad. According to the control circuit of the intelligent water dispenser, multiple functions such as water outlet flow, water outlet temperature and water leakage induction and the like can be controlled, and intelligent performance of the water dispenser can be largely improved.

The invention discloses a multi-stage efficient evaporative cooling water-chilling unit. The multi-stage efficient evaporative cooling water-chilling unit comprises a unit shell. A split packing type direct evaporative cooling unit is arranged in the center of the unit shell. A first packing-heat exchange tube combined evaporative cooling unit and a second packing-heat exchange tube combined evaporative cooling unit are arranged on the left side and the right side of the split packing type direct evaporative cooling unit correspondingly. An air inlet a is formed in the position, corresponding to the first packing-heat exchange tube combined evaporative cooling unit, of the side wall of the unit shell, and a high-temperature surface air cooler a is arranged between the first packing-heat exchange tube combined evaporative cooling unit and the air inlet a. An air inlet b is formed in the position, corresponding to the second packing-heat exchange tube combined evaporative cooling unit, of the side wall of the unit shell, and a high-temperature surface air cooler b is arranged between the second packing-heat exchange tube combined evaporative cooling unit and the air inlet b. Both the high-temperature surface air cooler a and the high-temperature surface air cooler b are connected with the split packing type direct evaporative cooling unit. The multi-stage efficient evaporative cooling water-chilling unit has the advantages that the height is small, the heat exchange efficiency of vertical tubes is high, the outlet water temperature is low, and the outlet water cleanliness is high.

The invention discloses a closed type vertical tube indirect evaporation cooling high-temperature cool water unit which comprises a vertical tube type indirect evaporation cooler a and a vertical tube type indirect evaporation cooler b. The vertical tube type indirect evaporation cooler a and the vertical tube type indirect evaporation cooler b are arranged in a unit shell body from top to bottom. The lower portion of the vertical tube indirect evaporation cooler is provided with a secondary air inlet. A direct evaporation cooler, a water baffle b and a centrifugal fan are sequentially arranged behind the vertical tube type indirect evaporation cooler a in the air inlet direction. A closed heat exchanger and a water baffle a are sequentially arranged behind the vertical tube type indirect evaporation cooler in the air inlet direction. A water baffle c and an axial flow fan are sequentially arranged on the upper portion of the vertical type indirect evaporation cooler a from bottom to top. According to the closed type vertical tube indirect evaporation cooling high-temperature cool water unit, the vertical tube type indirect evaporation coolers are arranged from top to bottom, the direct evaporation cooler and the closed type heat exchanger are arranged from top to bottom, the centrifugal fan and the axial flow fan are used for respectively controlling primary air and secondary air, and the cool water unit is jointly composed, so that water quality of the cool water unit and water outlet temperature are ensured, and the heat exchange efficiency of the unit is improved to a certain degree.

The invention discloses a method and device for recycling the flue gas waste heat of a heating furnace during preparation of carbon disulfide. The method for recycling the flue gas waste heat of the heating furnace comprises the steps that during preparation of carbon disulfide, high-temperature flue gas generated by the fact that natural gas is burned through the heating furnace is fed into a waste heat boiler for heat exchange; the flue gas generated after heat exchange through the waste heat boiler is conveyed into a lithium bromide refrigerating unit for refrigeration; then, low-temperature water generated by the lithium bromide refrigerating unit is conveyed into a carbon disulfide condenser. A flue gas exhaust port of the heating furnace of the device is connected with the waste heat boiler through a pipeline, a flue gas exhaust port of the waste heat boiler is connected with the lithium bromide refrigerating unit through a pipeline, the lithium bromide refrigerating unit is connected with the carbon disulfide condenser through a pipeline, the high-temperature flue gas is converted into the low-temperature water which is used for condensation of the condenser, and therefore the purpose of recycling flue gas waste heat is achieved.

The invention relates to an air source heat pump double-water-tank hot water system and a control method. The air source heat pump double-water-tank hot water system comprises a variable-frequency water supply pump, a hot water tank, a warm water tank and a parallel host which are connected in sequence, and further comprises a water return valve and a water replenishing valve which are connected with the warm water tank; the hot water tank, the warm water tank and the parallel host are sequentially connected to form host-water tank circulation; the warm water tank, the hot water tank, the variable-frequency water supply pump and the water return valve are sequentially connected to form water tank-tail end circulation; and the parallel host comprises a plurality of parallel branches which are independently controlled or not independently controlled, and different heat supply modes are achieved by opening a specific number of parallel branches, so that different tail end load requirements are met. Compared with the prior art, the double-water-tank scheme is adopted, so that the mixing loss among return water, replenished water and hot water is reduced; and meanwhile, the water inlet temperature and the water outlet temperature of the heat pump are reduced, the condensation temperature of the heat pump can be well reduced, and the energy efficiency of the heat pump unit is improved while water consumption of a user is guaranteed.