60results about How to "Raise the temperature of the water supply" patented technology

The invention relates to a novel low-temperature combined cooling, heating and power (CCHP) system based on a heat pump. Currently, no novel low-temperature CCHP system based on the heat pump with a simple structure and a reasonable design exists. The novel low-temperature CCHP system based on the heat pump comprises a high-pressure steam pipe, a steam turbine, a power generator, a condenser and a boiler connecting pipe, and is characterized by also consisting of a heating low-pressure steam pipe, a heating condensate pipe, a power plant after-heat single-effect heat pump unit, a refrigeration single-effect absorbing heat pump unit, a heat pump unit loop pipe, a loop circulating pump, a user refrigeration pipe, a cooling tower, a cooling tower water inlet pipe, a cooling tower water outlet pipe, a cooling water circulating pump, a power plant circulating cooling water pipe, a heat pump cooling tower, a cooling tower circulating pipe, a heating single-effect absorbing heat pump unit, a heating heating pipe, a heat pump circulating pipe and a user heating pipe; the heating low-pressure steam pipe is connected with the refrigeration single-effect absorbing heat pump unit; and the heating condensate pipe is connected with the power plant after-heat single-effect heat pump unit. The novel low-temperature CCHP system based on the heat pump has the advantages of reasonable structural design, energy saving, environmental friendliness and high heat utilization rate.

The invention discloses an air-conditioner control method and device. The air-conditioner control method includes steps of detecting a first temperature difference between a first water supply temperature and a first water return temperature of the air conditioning unit; judging whether a first difference between the first temperature difference and a preset temperature is larger than a first preset threshold or not; if the first difference is larger than the first preset threshold, adjusting frequency of a freezing water pump in the air conditioning unit, so that a second difference between a second temperature difference between a second water supply temperature and a second water return temperature of the air conditioning unit and the preset temperature is smaller than or equal to the first preset threshold under the adjusted frequency of the freezing water pump. The air-conditioner control method solves the technical problem of instable system load caused by variable water temperature or flow control of the air conditioners in the prior art and has the technical advantages that system load stability is maintained, refrigeration and moisturizing of the tail end of the air conditions are guaranteed and system energy consumption is lowered.

The invention provides an energy-saving control device and method for a data center air conditioning terminal. The device and method are applied to a data center air conditioning terminal structure composed of a cold water coil pipe, a draught fan, a regulating valve, a speed regulation execution device, a chilled water inflow pipeline, a chilled water outflow pipeline, an air supply channel and an air return channel. The energy-saving control device comprises a supplied air temperature sensor, a supplied air static pressure sensor, a returned air temperature sensor, an optimization control module, a supplied air temperature control module, a static pressure module and the like. By the adoption of the device and method, the returned air temperature control accuracy can be improved, local hot spots are avoided, the supplied air is controlled in an environment-friendly safe section, the energy consumption of the draught fan of the data center air conditioning terminal can be saved as well, and the energy effect of a whole water cooling air conditioner system is improved.

The invention discloses a solar photovoltaic-thermal combined intelligent water supply system in low rise buildings. Solar energy is converted into electric energy and thermal energy through a photovoltaic-thermal integrated device, the electric energy is used for electric heating of user insulation water tanks, and when the electric energy is surplus, the electric energy is stored in energy storage battery devices. The thermal energy is from cooling water of the photovoltaic-thermal integrated device, the water temperature is low, the low-temperature water is delivered to a trough-type concentrating solar thermal utilization device to be reheated, the temperature of hot water is increased, the hot water is stored in a concentrated insulation water tank, and hot water resources are distributed reasonably. Electric heating units are mounted in the user insulation water tanks and used for electric heating in cloudy and rainy weather. Even on the weather conditions of cloudy days, winter and the like, the system can provide hot water meeting user demand continuously.

A waste heat recovery steam cabinet comprises a cabinet body and a cavity inside the cabinet body. An intake pipe is arranged on one side of the cabinet body, an exhaust pipe is arranged on the other side of the cabinet body, the intake pipe and the exhaust pipe are respectively communicated with the cavity, the intake pipe is communicated with a steam generator, the exhaust pipe penetrates the inside of a heat exchange water tank, and the inside of the heat exchange water tank is communicated with the steam generator through a water pump and a water inlet pipe. By the aid of a waste steam recovery device, most exhausted waste steam is recovered by a condenser of the water tank to realize heat exchange, emission of the waste steam can be decreased, a water supply water tank can exchange heat, energy is saved, environments are protected, normal work of the steam cabinet cannot be affected, and the pressure of the steam cabinet can be maintained. The waste heat recovery steam cabinet can be in a safe working state for a long time, normal work is ensured, and the steam cabinet is stable and reliable in usability, ingenious in design, excellent in performance, convenient and practical.

The invention relates to a heat pump hot water supply method for obtaining high-temperature hot water in the technical field of heat supply of the energy class and a system thereof. A front-stage heat exchanger and a last-stage heat exchange which are in front-and-rear serial connection are used as radiators for heat dissipation; heat is released to a front-stage water tank and a last-stage water tank respectively; in a mode of changing water in the water tank, the starting water heating temperature of the front-stage water tank is higher than that of the last-stage water tank; the front-stage water tank absorbs a heat sensible part which has higher temperature in the side of a refrigerant; therefore, high-temperature hot water can be obtained in the front-stage water tank; simultaneously, the temperature of a switching point for water change in the last-stage water tank is limited so as to ensure that the heat pump system is still positioned at low condensing temperature, thereby breaking through the water temperature restriction of the prior heat pump hot water supply system and making the heat pump system operate safely, reliably and efficiently.

The invention belongs to the technical field of heating and ventilation air conditioners, and particularly relates to a medium and low temperature heat energy heat supply system based on heating typeabsorption-compression type heat exchange. The system comprises a medium and low temperature heat source, a heat source station, a primary net, a heat station and a secondary net which are connected in sequence; the heat source station is a first water-water heat exchanger, and the heat station is a compression type heat exchange unit or a second water-water heat exchanger; and the medium and lowtemperature heat source is medium and low temperature industrial waste heat, or medium-and-deep geothermal heat, or medium and low temperature circulating water from a solar heat collector. Accordingto the medium and low temperature heat energy carrier characteristics, the heat exchanger is reasonably configured in the medium and low temperature heat source station, the compression type heat exchange unit is reasonably configured in the heat station according to the characteristics of the heat user so that the water return temperature of a primary heat network can be greatly reduced and the primary water supply temperature can be increased, and the industrial waste heat economic heat transfer distance is greatly improved; and high-efficiency utilization of the medium and low temperature heat energy is facilitated so that a heat supply heat source support is provided for surrounding towns, and the fossil energy consumption of the heat supply system and the discharge amount of pollutants are reduced.

The invention discloses an absorptive heat exchanger unit which comprises a hot water type absorptive heat pump unit, a water-water heat exchanger and a primary side pipeline and a secondary side pipeline. The primary side pipeline sequentially passes a generator of the heat pump unit and the water-water heat exchanger from water supply to water return. The heat exchanger unit further comprises a heat supply network heater, and the primary side pipeline has to pass the heat supply network heater before entering the generator. Compared with the prior art, the absorptive heat exchanger unit has the advantages that the heat supply network heater can heat the primary side pipeline before the primary side pipeline enters the heat exchanger pump unit, heat compensation is realized, water supply temperature of the primary side pipeline can be further increased, temperature difference between supply and return of primary-side hot water is increased, and initial investment and operation cost of the absorptive heat exchanger unit can be reduced.

The invention relates to the technical field of indoor heating and ventilation, in particular to a control method of an intelligent comfortable cooling and heating household air conditioning system. The control method comprises the following steps: in a heating mode, valves of a capillary network and a ground temperature adjusting pipe network are controlled to be opened through a valve controller for heating; in a refrigerating mode, the valves of the capillary network and the ground temperature adjusting pipe network are controlled to be opened, meanwhile, water supply at the set temperature is controlled and provided through a water mixing temperature adjusting controller for cooling; when the control result of the capillary network and the ground temperature adjusting pipe network cannot meet the set requirement, a fan coil is opened in a linkage mode; and when the control result of the capillary network and the ground temperature adjusting pipe network can meet the set requirement, the temperature is controlled by controlling a proportional integral valve through the water mixing temperature adjusting controller in the heating mode, and the temperature is controlled by opening and closing the valves of the capillary network and the ground temperature adjusting pipe network in the refrigerating mode. Radiation temperature adjustment is mainly adopted, the temperature can be rapidly adjusted, the blowing feeling is reduced, and the comfort degree is improved.

The invention discloses an electric vehicle air-conditioning system using a capillary network radiation end. The electric vehicle air-conditioning system using a capillary network radiation end comprises a heat pump type refrigeration system, a battery box heat management system and a capillary network radiation end air-conditioning system, wherein the heat pump type refrigeration system comprises a heat pump type water chiller, a circulating water pump, a solenoid valve and the like; the battery box heat management system comprises a battery box, a first controller, a power battery pack, a microchannel cold plate and a temperature sensor; a temperature signal of the battery box is transmitted to the first controller, so that a control instruction is issued to a first solenoid valve and the heat pump type water chiller; the capillary network radiation end air-conditioning system comprises a second controller, a capillary network radiation end and a passenger compartment temperature sensor; and a temperature signal of a passenger compartment is transmitted to the second controller, so that a control instruction is issued to a second solenoid valve and an auxiliary electric heating system. According to the electric vehicle air-conditioning system using a capillary network radiation end disclosed by the invention, the same circulation loop is adopted, so that the heat management requirements of the battery box are met, and requirements for supplying cold for the passenger compartment in summer and supplying heat for the passenger compartment in winter are met.

Overlap super high temperature water source thermal pump comprises a low, high temperature compressor in a cabinet in which the medium outlet of evaporizer is connected with the medium inlet of the high temperature gas/liquid heat exchanger by a connecting pipe while its outlet is connected with the medium inlet of a high temperature compressor, the outlet of which is connected with the medium inlet of a condenser and the outlet of which is connected with the inlet of a high temperature electromagnetic valve, which outlet is connected with the inlet of a high temperature gas/liquid heat exchanger, the outlet of which is connected with the inlet of the high temperature expansion valve and its outlet is connected with the evaporizer, with the supplied water temperature by 70-90 deg.C..

The invention discloses application of a low-pressure cylinder zero-output technology to a heat supply unit. The application comprises the following steps that S1, a medium and low-pressure guide pipe bypass regulating valve is adjusted, and low-pressure cylinder zero output operation cannot be started unless the cooling steam flow is more than 20t/h and a low-pressure cylinder spray cooling device is placed to prevent overtemperature of a last-stage blade and a cylinder body; S2, during the low-pressure cylinder zero-output operation, a flow area with increased blade dynamic stress is rapidly avoided to reduce blade vibration stress; S3, in the process of placing the low-pressure cylinder spray cooling device, the temperature of the last-stage blade is adjusted to be 5-8 DEG C higher than the saturation temperature under corresponding steam exhaust pressure to prevent water erosion of the last-stage blade; and S4, the time for starting the low-pressure cylinder zero-output operation every time is not less than two hours, and before the low-pressure cylinder zero-output operation is quit, the water supply temperature of a heat supply network is increased, and the heat storage capacity of the heat supply network is increased, so that the stability of the water supply temperature of the heat supply network after the operation is quit is ensured.

This invention relates to a single-baffler-water mixer mixing water in two ways and adjusting proportion of water while heating, in which interfaces of return pipes of this invented heat net and users are fixed on two side walls of a pipe underside of them, the baffler is set in the cavity of the pipe and is connected with the pipe wall by a shaft, which is advantaged that water temperature of entry of each building can be adjusted separately to meet the requirements of different users to heat.

The invention relates to the technical field of air source heat pump high-efficiency heating under multiple working conditions particularly a low-temperature environment, in particular to a device forhigh-efficiency energy heating under a low temperature condition, and a control method thereof. A low-temperature air source module is connected between an energy storage water tank and a high-temperature water source screw rod unit; the high-temperature water source screw rod unit outputs high-temperature water to an end user side; electric auxiliary heating is arranged between the high-temperature water source screw rod unit and the end user side; an end water supplement pump is arranged on the water outlet side from the energy storage water tank to an end pipe network; a low-temperature condenser of the low-temperature air source module and a high-temperature system evaporator of the high-temperature water source screw rod unit are cyclically coupled through a waterway; and the low-temperature water source module prepares low-temperature hot water used as a low-temperature heat source of the high-temperature water source screw rod unit. According to the device for high-efficiency energy heating under the low temperature condition, and the control method thereof provided by the invention, the low-temperature adaptability of the air source heat pump can be improved, and a low-temperature heating performance is improved.

The invention relates to a cascade energy utilization heat supply system under a low-load working condition and a control method thereof. The cascade energy utilization heat supply system comprises aboiler, a turbine high-pressure cylinder, a turbine medium-pressure cylinder, a turbine low-pressure cylinder, a first ejector, a second ejector, a first heat supply network heater and a second heat supply network heater. The boiler, the turbine high-pressure cylinder, the turbine medium-pressure cylinder and the turbine low-pressure cylinder sequentially communicate through pipelines. A steam outlet of the turbine medium-pressure cylinder separately communicates with a power steam inlet of the first ejector, a power steam inlet of the second ejector and the first heat supply network heater through pipelines. A steam outlet of the turbine low-pressure cylinder communicates with a low-pressure steam inlet of the first ejector through a pipeline. An outlet of the first ejector separately communicates with a low-pressure steam inlet of the second ejector and an outlet of the second ejector through pipelines. The outlet of the first ejector and the outlet of the second ejector further communicate with the second heat supply network heater through pipelines. The first heat supply network heater communicates with the second heat supply network heater through a pipeline.

The invention relates to a thermal power plant heat network energy saving system and method, and belongs to a firepower coal fired power generation heat supply unit. In the prior art, the energy consumption of a thermal network circulation pump is difficult to be obviously reduced. The system comprises a heat source side pipeline, and is characterized by also comprising a heat network heater, a primary heat network circulation water pump frequency converter, a primary heat network circulation water pump, a secondary heat network circulation water pump, a heat user pressure boosting pump, a heat user part temperature instrument and a user side pipeline, wherein the primary heat network circulation water pump is arranged on the heat source side pipeline; the secondary heat network circulation water pump, the heat user pressure boosting pump and the heat user part temperature instrument are arranged on the user side pipeline; the heat source side pipeline and the user side pipeline are connected with the heat network heater. The method provided by the invention comprises the following steps that during the system operation, the water supply temperature is raised; the primary heat network water supply and water return temperature differences are increased; the primary heat network circulation water flow rate is further reduced. The system and the method have the advantages that the energy consumption of the heat network circulation pump can be obviously reduced; the integral efficiency of a thermal power plant unit and the profits of thermoelectric enterprises are improved.

The invention discloses a heat pump seawater desalinating device utilizing waste heat of a power plant cooling tower. The heat pump seawater desalinating device comprises a seawater tank, a circulating pump, a steam condenser, a spray head, a filler and a fan; the fan, the spray head and the filler are sequentially arranged in the cooling tower from top to bottom; the seawater tank, the circulating pump, the steam condenser and the spray head are sequentially connected; a steam turbine exhausts gas into the condenser; the circulating pump pumps seawater from the seawater tank into the steam condenser, the seawater is sprayed out from the spray head to be fragmented into small water drops, the small water drops enter the filler, the seawater evaporates, and thus the cooling effect of the cooling tower is achieved. The power plant cooling tower uses seawater evaporation cooling to replace fresh water evaporation cooling, and fresh water resources are saved. Through a heat pump technology, steam evaporated by the seawater is collected to prepare fresh water, and ocean energy sources are utilized. A heat pump evaporator absorbs heat from steam condensation, then heats heat-supplying return water at the condenser end and supplies heat to a central heat-supplying pipe network, or heats power plant circulating water, the water supplying temperature is increased, the waste heat is fully recycled, and the energy sources are saved.

The invention discloses an automatic optimization energy-saving control system based on the human body thermal comfort level and people number optimization grouping. The system comprises a fresh air ventilator, an air conditioner, a fan, a variable frequency speed regulation control box, an image camera, a laser matrix multipoint temperature detector, a variable flow controller and a full-automatic control cabinet. The fresh air ventilator is provided with an air inlet temperature sensor, a fresh air cold water coil, a fresh air stepless speed regulation fan and an air outlet temperature sensor. The air conditioner is provided with a relative humidity sensor, a carbon oxide sensor, an air return temperature sensor, an air conditioner cold water coil and an air conditioner stepless speed regulation fan. The image camera is used to recognize the number of people in an area. The laser matrix multipoint temperature detector is used to detect the shell temperature of a human body. The variable flow controller is connected to the air return temperature sensor, the air conditioner cold water coil and the air conditioner stepless speed regulation fan. The full-automatic control cabinet isconnected to the air inlet temperature sensor, the fresh air cold water coil, the fresh air stepless speed regulation fan, the air outlet temperature sensor, the relative humidity sensor, the carbon oxide sensor, the variable frequency speed regulation control box, the image camera, the laser matrix multipoint temperature detector and the variable flow controller.

The invention discloses a water mixing device of a water distributing and collecting device. The water mixing device is characterized in that an electric three-way regulating valve, a circulating water pump and a water temperature sensor are arranged on a water supply pipeline where a cooling and heating water inlet pipe is connected with a water distributor, a three-way pipe and an electric stop valve are arranged on a water return pipeline where a water collector is connected with a cooling and heating water outlet pipe, and the three-way pipe is combined with a water return branch pipe for connecting return water on the water return pipeline into the electric three-way regulating valve; and the water mixing device further comprises an indoor dew point temperature probe, an indoor temperature sensor, a temperature control panel, an electric three-way regulating valve, a circulating water pump, a water temperature sensor and an electric stop valve, wherein the indoor dew point temperature probe and the indoor temperature sensor are electrically connected with the temperature control panel. Meanwhile, the invention further discloses a control method of the water mixing device. The water mixing device is simple in structure and stable in operation, the water mixing device is arranged at the radiation tail end of a fresh air conditioning system and can be directly connected into a conventional air conditioning water system, condensation caused by too low water supply temperature in summer can be avoided, and the situation that the service life of components and radiant tubes is affected by too high water supply temperature in winter can be prevented.

The invention discloses an air energy water heater capable of achieving rapid defrosting and stable water temperature and a using method.The air energy water heater comprises a refrigerant loop, a water control loop and a frequency conversion controller, the structures and pipe network layout of the refrigerant loop and the water control loop are simpler, switching control over working modes is convenient, the functions are comprehensive, and the water temperature is stable. The switching control of circulating heating, return water heating and constant-temperature and constant-pressure water supply can be realized only by controlling the four-way valve, so that the simplicity of the control system is realized, and the stability of water supply temperature and pressure can be effectively improved on the basis of greatly simplifying the system structure, hardware cost and energy consumption cost. According to the method, whether the copper pipe is frosted or not and the frosting degree can be accurately and reliably predicted, and a basis is provided for optimization control of subsequent defrosting. Vibration defrosting, thermal expansion defrosting and hot defrosting are organically combined, the defrosting effect can be effectively improved, the defrosting process is accelerated, and the overall performance of the air energy water heater is improved.