611results about How to "Increase water temperature" patented technology

A method and apparatus for underwater pelletizing and subsequent drying of polyethylene terephthalate (PET) polymers and other high temperature crystallizing polymeric materials to crystallize the polymer pellets without subsequent heating. High velocity air or other inert gas is injected into the water and pellet slurry line to the dryer near the pelletizer exit. The slurry line has a substantially straight component, and air is preferably injected at the end of the straight component nearest the pelletizer exit and in a direction substantially coincident with the axis of the straight component. The air injection significantly increases the speed of the pellets into and out of the dryer such that the PET polymer pellets leave the dryer above at least 135° C., and preferably above 145° C., to self-initiate crystallization.

There is provided a circulation type hot water supply device in which a downstream end of a hot water delivering channel 6 connected to a heat exchanger 4 of a water heater 1 is connected to a water supply channel 5 upstream of the heat exchanger, and a circulating pump 25 that returns hot water fed from the heat exchanger to the hot water delivering channel to the heat exchanger through the water supply channel is provided in the hot water delivering channel. The device can reliably identify an abnormality when it occurs, such as adhesion of a deposit to an inner surface of a heat absorbing pipe 4b to reduce heat exchange efficiency. A diagnosis is started when a hot water delivering tap 7 is closed and a burner 3 is subjected to combustion. In the diagnosis, supply of water to the heat exchanger 4 is first stopped to shut down the burner 3. Then, the presence of an abnormality is determined when an amount of increase of a detection temperature from a hot water delivering temperature sensor 20 reaches a predetermined threshold value or more.

There is provided a circulation type hot water supply device in which a downstream end of a hot water delivering channel 6 connected to a heat exchanger 4 of a water heater 1 is connected to a water supply channel 5 upstream of the heat exchanger, and a circulating pump 25 that returns hot water fed from the heat exchanger to the hot water delivering channel to the heat exchanger through the water supply channel is provided in the hot water delivering channel. The device can reliably identify an abnormality when it occurs, such as adhesion of a deposit to an inner surface of a heat absorbing pipe 4b to reduce heat exchange efficiency. A diagnosis is started when a hot water delivering tap 7 is closed and a burner 3 is subjected to combustion. In the diagnosis, supply of water to the heat exchanger 4 is first stopped to shut down the burner 3. Then, the presence of an abnormality is determined when an amount of increase of a detection temperature from a hot water delivering temperature sensor 20 reaches a predetermined threshold value or more.

A method of hydraulic fracturing of an oil producing formation includes the provision of a heating apparatus which is transportable and that has a vessel for containing water. A water stream of cool or cold water is transmitted from a source to a mixer, the cool or cold water stream being at ambient temperature. The mixer has an inlet that receives cool or cold water from the source and an outlet that enables a discharge of a mix of cool or cold water and the hot water. After mixing in the mixer, the water assumes a temperature that is suitable for mixing with chemicals that are used in the fracturing process, such as a temperature of about 40° -120° F.+(4.4 - 48.9° C.+). An outlet discharges a mix of the cool and hot water to surge tanks or to mixing tanks. In the mixing tanks, a proppant and an optional selected chemical or chemicals are added to the water which has been warmed. From the mixing tanks, the water with proppant and optional chemicals is injected into the well for part of the hydraulic fracturing operation.

The invention discloses a solar energy and heat source tower heat pump combined triple supply air-conditioning system which comprises a heat source tower heat pump air-conditioning system, a solar energy and condensation heat recycling and conventional heating hot water system, a residual recycling and storage system and a heat source tower heat supply promoting system. According to the invention, an air conditioner and a domestic hot-water system can run in a stable and energy-saving mode under different working conditions, electric auxiliary heating or fossil energy source combustion are not required in heat supplying. The solar energy and heat source tower heat pump combined triple supply air-conditioning system is suitable for central air conditioners and central hot water systems in most areas.

In one embodiment of the invention, a system for controlling the temperature of water in a water reservoir includes a water reservoir, an inlet operable to deliver water to the water reservoir, an outlet operable to dispense at least a portion of the water from the water reservoir, and a staged water cooler having a first thermoelectric cooler stage coupled to a second thermoelectric cooler stage, the staged water cooler operable to control the temperature of the water in the water reservoir.

The invention provides an air conditioner defrosting circulation system comprising a compressor. A compressor exhaust pipe is connected with a four-way valve which is connected with an outdoor heat exchanger, an indoor heat exchanger and a gas-liquid separator, the gas-liquid separator is connected with a compressor intake pipe, a heat storage water tank is arranged on the compressor exhaust pipe, and a water spray port of the heat storage water tank is formed in the outdoor heat exchanger and matched with a return pipe of a water storage tank. The four-way valve is not switched, but the heat-preservation heat storage water tank is arranged on the compressor exhaust pipe to collect waste heat during circulation and fully utilize the waste heat, an outdoor unit is defrosted by a hot water spraying mode, normal heating of an indoor unit is guaranteed in the whole defrosting process, heating efficiency is improved effectively, and service life of the system is prolonged.

The invention discloses a cascade reservoir control system for breeding demand of viscosity production demersal fish. The cascade reservoir control system comprises a water temperature and weather intelligent monitoring platform, a system running support platform and a cascade reservoir ecological dispatching decision platform, wherein the water temperature and weather intelligent monitoring platform comprises a water temperature monitoring unit, a data receiving base station, a power station monitoring center and a system monitoring center, the system running support platform comprises a communication transmission system and a network system, and the cascade reservoir ecological dispatching decision platform comprises a dispatching information layer, a dispatching decision layer and a dispatching operation layer. A control method disclosed by the invention is used for controlling according to the control system. The control system is used in a breeding period of the viscosity production demersal fish, a coordinative control technology of an upstream reservoir matched with running of a stoplog gate to control a water temperature and a last-stage reservoir to regulate flow quantity is used for providing a moderate water temperature and flow quantity condition for breeding of the viscosity production demersal fish, and the influence of the running of the cascade reservoir on the breeding of the viscosity production demersal fish can be reduced.

A method of hydraulic fracturing of an oil producing formation includes the provision of a heating apparatus which is transportable and that has a vessel for containing water. The method contemplates heating the water up to a temperature of about 200° F. (93.3° C.). A water stream of cool or cold water is transmitted from a source to a mixer, the cool water stream being at ambient temperature. The mixer has an inlet that receives cool or cold water from the source and an outlet that enables a discharge of a mix of cool or cold water and the hot water. After mixing in the mixer, the water assumes a temperature that is suitable for mixing with chemicals that are used in the fracturing process, such as a temperature of about 40°-120° F.+ (4.4-48.9° C.+). An outlet discharges a mix of the cool and hot water to surge tanks or to mixing tanks. In the mixing tanks, a proppant and an optional selected chemical or chemicals are added to the water which has been warmed. From the mixing tanks, the water with proppant and optional chemicals is injected into the well for part of the hydraulic fracturing operation. The mixer preferably employs lateral fittings that enable heated water to enter the mixer bore at an acute angle. The mixer can also provide a lateral fitting that exits the mixer bore upstream of the first lateral fitting, the second lateral fitting transmitting water via a conduit such as a hose to the heater.

A heat generation and storage device supplements building heating and hot water systems. A roof cap including an air passage is connected to air outlets disposed within the roof structure of a building and to air passages formed by panels mounted over the surface of a building's roof. The roof cap is connected to a vent which either exhausts air to the atmosphere and / or recirculates air to a liquid heat storage tank. Heated air and heated water from the storage tank supplement a building's heating and hot water systems.

The invention provides a breeding method and a pond for improving the commercial specification and the yield of procambarus clarkii in the pond. The breeding method comprises the following steps: drying the pond under the sun; putting young procambarus clarkii into the pond for the first time; performing catch rotation on commercial procambarus clarkii for the first time; putting young procambarus clarkii into the pond for the second time; performing catch rotation on commercial procambarus clarkii for the second time; and thoroughly draining water of the pond, and catching all commercial procambarus clarkii. The pond comprises a circular groove which is digged along the periphery of the pond, wherein the circular groove has an upper bottom width of 6 to 10 meters, a lower bottom width of 1 to 5 meters, a depth of 0.8 to 1 meter, a ridge height of 0.8 to 1 meter and a slope ratio of 1: 3; the area of the circular groove accounts for 20 to 30% of the total area of the pond; the a region, located at the inner side of the circular groove, of the pond is piled with a central enclosed beach; and the distance between the water level of the pond and the central enclosed beach is in a range of 10 to 70 cm. The invention has the following beneficial technical effects: by adopting the method provided by the invention, 200 to 250 kg of commercial procambarus clarkii can be harvested in two seasons, wherein the proportion of the commercial procambarus clarkii with a specification of 40 g or more reaches 60 to 70%.

The invention provides a single-tank, double-pipe and bidirectional electric heating device and an air energy instant electric water heater. The single-tank, double-pipe and bidirectional electric heating device comprises a cylindrical tank body, the two ends of the tank body are connected with an upper end cover and a lower end cover in a sealing mode, the lower end cover is provided with a water inlet, a water outlet and a binding post, the tank body is internally provided with two layers of concentric pipe bodies which are an inner pipe body and an outer pipe body, an electric conduction heating body is arranged on a space layer between the inner pipe body and the outer pipe body, and a communicated water flow channel is formed by the inner channel of the inner pipe body and the annular channel between the tank body and the outer pipe body. The path length of water flow is increased, and the heating area of the water flow pipe bodies is increased by placing pipe bodies into the single tank body to divide the space inside the tank body, the process of obtaining the heating energy directly and bidirectionally transmitted by the heating body is accelerated, the heating and acting heat effect ratio per unit time of the tank body is effectively improved, and the power loss and the heating loss are reduced.

A solar heating device is characterized in that: an auxiliary heating device is arranged between a heat storage bucket and a radiator, and the auxiliary heating device comprises a heating bucket, a heat conductive medium, an electric heater and a heat transfer water pipe; the heating bucket is provided with the heat conductive medium and the electric heater, the heat transfer water pipe penetratesthrough the heating bucket and the heat conductive medium, one end of the heat transfer water pipe is connected with a water outlet of the heat storage bucket, and the other end thereof is connectedwith a water inlet of the radiator; and the auxiliary heating device further comprises a solar cell panel, a controller, a storage battery and an inverter, the solar cell panel, the controller and theinverter are sequentially connected, the other end of the inverter is connected with the electric heater, and the storage battery is in parallel connection with the inverter on the controller. The solar heating device can solve the problem of the existing heating device such as too low water temperature in winter night, and has the advantages of energy conservation, environmental protection, simple structure, low fabrication cost, convenient use, fast and efficient auxiliary heating and the like; and the solar heating device is applicable to independent heating in winter for families, villas,shops and rural schools and offices.

The invention relates to a water level measuring system for a boiler drum. The water level measuring system comprises a water level measuring device, a thermostat, a mean density measurer, a pressure sampling door, a pressure transmitter, a temperature transmitter, a differential pressure transmitter and a full water level indicator, wherein the water level measuring device is connected with the stream side door and the water side door of the drum, connected with the differential pressure transmitter by the thermostat, and also connected with the pressure transmitter by the pressure sampling door; the mean density measurer connected with the thermostat is connected with the temperature transmitter; the pressure transmitter, the temperature transmitter and the differential pressure transmitter are all connected with the fill water level indicator. The water level measuring method obtains the real-time water level by measuring the differential pressure, saturation pressure and room temperature. The checking method checks the system by checking the door and a water injection box. Condensed water generated by the stream side door also flows into the water level measuring device, and jointly flows back into the drum with the condensed water in the device; therefore, the heat loss is less, the water temperature at the lower part of the device is improved, and the measurement accuracy is also improved. The water level measuring system for the boiler drum is small in volume and light in weight, and recycles the heat.

The invention discloses a combined type positive phase change thermal storage heating system and a control method thereof. The combined type positive phase change thermal storage heating system comprises two heat supply systems including a solar water heating phase change floor and an electrical heating phase change floor, adopts three heat supply manners including a solar heat supply return circuit, a solar thermal storage return circuit and an auxiliary electrical heating circuit. Through the control of the control manner of the combined type positive phase change thermal storage heating system, the phase change thermal storage is fully utilized, the energy consumption problem of auxiliary electric heating is also taken into consideration, and good room temperature control and heat supply persistence are achieved.

The present invention provides immersion heating elements, water heaters and methods for their fabrication and use. In the first embodiment of this invention, a resistance heating element is provided which includes a resistance heating material and an electrically insulating, substantially water impervious sheath disposed over the resistance heating material to form an active element portion having an envelope of about 50 in,.sup.3 a total wattage of at least 1000 W, and a watt density of no greater than 60 W / in..sup.2 Such an element has been demonstrated to substantially reduce scale reduction in water containing calcium, calcium carbonate, or both in solution.

The invention discloses a condensing heat exchanger of a gas water heater, comprising a housing, a smoke exhausting cylinder, a cold water inlet opening and an inlet tube and a warm water outlet, wherein, the housing is provided with a split type condensing residual heat exchanger and a condensed water collecting structure; the split type condensing residual heat exchanger comprises a first heat exchanger with a heat exchange tube and a second heat exchanger; a warm water outlet of the first heat exchanger is communicated with the second heat exchanger through a connecting pipe; the second heat exchanger is provided with a high temperature water outlet pipe; the condensed water collecting structure comprises a fair water fin and a groove part on the bottom of the housing as well as a condensed water outlet tube. The cold water of the device can be preheated by the residual heat in the first heat exchanger and then enters into the second heat exchanger where the preheated cold water becomes the high temperature water after heated and then flows out. The condensing heat exchanger of the invention has high thermal efficiency and low funnel temperature. Moreover, the condensed water is separated from the heat exchanger, which ensures that the exchanger is free from corrosion.

The invention discloses a gas water heater and method for preventing the frost with a water pump. The gas water heater for preventing the frost with the water pump comprises a heat exchanger, a combustor, a water inlet pipe, a water outlet pipe and a water outlet valve. The combustor is arranged below the heat exchanger. A water flow sensor is mounted on the water inlet pipe. The water outlet valve is arranged on the water outlet pipe. The water pump is arranged between the water flow sensor and the heat exchanger. The water inlet pipe communicates with the water outlet pipe through a circulating water pipe. One end of the circulating water pipe is arranged between the water outlet valve and the heat exchanger, and the other end of the circulating water pipe is arranged between the water flow sensor and the water pump. A circulating valve is arranged on the circulating water pipe. A first temperature sensor is arranged on the water inlet pipe. When the water temperature detected by the first temperature sensor is lower than the first temperature value, the water outlet valve is closed, the water pump is opened, the circulating valve is opened, and a circulating water passageway is formed; and the combustor is started to heat the heat exchanger. In this way, water in the water heater is circulated and heated by the water pump and the combustor, and the water passageway is prevented against the frost.

The invention discloses an antifreezing control method for a hot water heater of an air conditioning heat pump. The method comprises the following steps of: collecting water temperature values of a water system of a unit of the hot water heater of the air conditioning heat pump at to-be-detected parts in a water circulating pipeline; and when the water temperature value at any one of the to-be-detected parts is smaller than a corresponding set temperature value, starting an auxiliary heating device at a corresponding part so as to raise the temperature of the part and the water temperature of the water system. The method disclosed by the invention can solve the problem that the hot water heater of the air conditioning heat pump is frozen as parts of the water system are frozen due to over-low water temperature in the water system.

A hybrid heating system and method including: (a) a heat pump water heating system; (b) a conventional heating system including a conventional heater having a surface heat exchanger, and a primary circulation arrangement fluidly communicating with the surface exchanger, the primary circulation arrangement adapted to effect an exchange of heat between the surface heat exchanger and a flow of liquid to produce a heated flow of liquid; (c) a plurality of sensors associated with the heat exchange system; (d) an input arrangement adapted to provide cost data pertaining to a first power cost for supplying power to the heat pump system, and to cost information pertaining to a second power cost for operating the conventional system, and (e) a processor including a memory storing criteria specifying when to operate the heat pump water heating system, and when to operate the conventional heating system.

In response to simultaneous ON settings of a heater switch signal HSW and an eco switch signal ESW, an eco priority map is set to an intermittent operation permission map (step S350). The heater switch signal HSW is output from a heater switch that is operated to warm up a passenger compartment, while the eco switch signal ESW is output from an eco switch that is operated to give preference to improvement in fuel consumption of the vehicle over the heater function. The eco priority map is designed to allow intermittent operation of an engine in a lower range of cooling water temperature Tw of the engine than that in a heater-on state map set in response to OFF setting of the eco switch signal ESW and ON setting of the heater switch signal HSW. The control procedure of the invention refers to the intermittent operation permission map and determines whether the intermittent operation of the engine is allowed or prohibited, based on the current cooling water temperature Tw and a starting-time cooling water temperature Tst, which represents a temperature of cooling water at a first start of the engine since activation of the vehicle system (step S360).

The invention discloses a device and a method for improving large reservoir stratified low-temperature water, aims to improve the problem of low temperature of discharged low-temperature water of an established hydropower station, and provides a device for improving the large reservoir stratified low-temperature water. The device comprises a water temperature control curtain which is arranged in a reservoir and mainly comprises a water retaining net, wherein the vertically arranged water temperature control curtain is arranged 600-1,500 m in front of a reservoir dam and is perpendicular to the extension direction of a water intake for discharge in front of the dam; the top of the water temperature control curtain is positioned below a reservoir thermocline, and the bottom of the water temperature control curtain is fixedly arranged at the bottom of the reservoir, so that the surface water and the thermocline water of the reservoir enter the water intake through the top end of the water temperature control curtain; the low-temperature water at the bottom of the reservoir is retained at the water intake by the water temperature control curtain. The temperature of the discharged water of the established power station can be effectively raised by 3-5 DEG C on the premise that the operation situation of the power station is not affected.

The invention relates to the field of engines, in particular to an adjustable cooling system of an engine. The system comprises a cooling main circulating pipeline. The cooling main circulating pipeline comprises a main path thermostat, an engine radiator, a main path water pump, a machine oil cooler, an engine cylinder body and a cylinder cover, which are communicated in sequence; a cooling circulating branch is arranged on the main circulating pipeline; one end of the cooling circulating branch is connected with the main path thermostat, and the other end of the cooling circulating branch is connected with one end of a water outlet of the engine radiator; and the main path thermostat can distribute the flows of cooling water in the cooling main circulating pipeline and the cooling circulating branch in real time according to the temperature of the cooling water. The adjustable cooling system can reasonably distribute the cooling water to precisely perform the real-time heat management for a whole vehicle, and can realize quick vehicle heating in a cold state of the engine when the engine reaches the normal working temperature as quickly as possible, so that the mechanical efficiency of the engine is improved, and the purposes of energy conservation and emission reduction are achieved.

The invention discloses a sonar fish shoal detection system and method. The sonar fish shoal detection system comprises a central server and multiple detection floaters which are arranged on the water surface. Each detection floater comprises a shell, a processor, sonar sensing equipment, water temperature detection equipment and positioning equipment. The sonar sensing equipment detects fish shoal depth information of a water area in which the detection floaters are arranged. The water temperature detection equipment detects water surface temperature of the water area in which the detection floaters are arranged. The positioning equipment positions the positioning information of the floaters. The processor transmits the fish shoal depth information, the water surface temperature and the positioning information to the central server. The central server receives the fish shoal depth information, the water surface temperature and the positioning information transmitted by all the detection floaters and draws a fish shoal comprehensive information graph by using the fish shoal depth information, the water surface temperature and the positioning information of each detection floater so as to analyze the distribution position and depth of the fish shoal. The sonar fish shoal detection system has large scanning range so that the data requirements of wide-range fish shoal detection and fishery resource estimation can be met, data sharing of multiple ships can be realized and judgment and prediction of the movement direction of the fish shoal and tracking are facilitated.

The invention discloses air energy heat pump cold-warm-hot integrated equipment. The equipment absorbs heat around an evaporator to evaporate a heat transfer working medium; the steam of the working medium is compressed by a compressor, and then the temperature and pressure thereof are increased; when the high-temperature steam is condensed into liquid by the condenser, heat is released and transferred to the water in a water storage tank; and the condensed heat transfer working medium returns to an evaporator through an expansion valve and then is evaporated again to finish a heating cycle. Comparatively, a low-temperature low-pressure liquid refrigerant firstly absorbs heat from a low-temperature heat source in the evaporator and is gasified; then a compressor extracts the gasified refrigerant gas in the evaporator and compresses the refrigerant gas in the condenser, and the refrigerant gas turns into high-temperature high-pressure gas; the high-temperature high-pressure gas is condensed into liquid in the condenser and turns into a high-temperature high-pressure liquid refrigerant; and the high-temperature high-pressure liquid refrigerant is throttled by the expansion valve to become a low-temperature low-pressure liquid refrigerant to finish a refrigeration cycle. The system can meet all requirements of domestic heating, hot water supply and refrigeration.

A fuel cell system includes a fuel cell; a circulating system that circulates and supplies fuel off-gas discharged from the fuel cell to the fuel cell; a pump that pumps a fluid in the circulating system; a discharge valve through which the fluid in the circulating system is discharged to the outside; and a control device that controls the pump and the discharge valve. If operation of the fuel cell is started in a cold environment, the control device executes a control to start power generation in the fuel cell for a first period before activating the pump and executes a control to drive the pump while the discharge valve is closed for a second period.

The invention relates to a maintaining and energy-saving method for a blowout stand-by boiler, which comprises the following steps: after the boiler steps out, reserving a fire bed; after the boiler is naturally cooled, when the exit temperature of the furnace chamber drops to 100 DEG C or so, the drum pressure is 0.05-0.1 MPa and the water level is kept within the range of drum central line + / -30mm, carrying out maintenance: carrying out water-side maintenance and vapor-side maintenance, and restarting the blowout stand-by boiler every 24 hours, wherein every time the restarting operation is finished, the opening of the fume outlet baffle is controlled at 10%, and the furnace chamber draft is adjusted to the minimum. The method provided by the invention well overcomes the defects in the prior art. The test proves that the method has favorable application effect and has the characteristics of quick start of the blowout stand-by boiler, favorable maintenance effect and obvious energy-saving effect.

The invention relates to a novel farming method of cynoglossus semilaevis. A main mode is of a combined mode of a warmhouse booth, heavy brine, geothermal freshwater and liquid oxygen. The novel farming method specifically comprises the steps of: purifying a water source; conditioning water temperature and water quality; carrying out ultraviolet sterilization; carrying out high-efficient oxygenation; farming in a farming workshop; recovering farming wastewater; and enabling the recovered farming wastewater to enter into a distribution reservoir according to the proportion of 30%-50%, conditioning the water temperature and the water quality again and enabling the wastewater to enter into a farming pond. According to the novel farming method disclosed by the invention, the use of fire coal and a Roots blower can be stopped, the energy-saving effect is significant, and the farming risk caused by insufficient electric power is simultaneously reduced; and the problem that the farming of the cynoglossus semilaevis is limited in a plurality of regions with abundant heavy brine and geothermal resources and the insufficient supply of seawater, and the development of the farming industry of the cynoglossus semilaevis is benefited.

Hybrid heating system including: a heat pump water heating system; sensors, for measuring a system parameter; an input arrangement providing cost data pertaining to a first power cost for supplying power to the heat pump system, and to cost information pertaining to a second power cost for operating a conventional heating system; a processor storing criteria specifying when to operate the heat pump and conventional systems, the processor receiving and processing: cost data; cost information; system parameter data; flow information on a heat exchange system circulation arrangement, and heat pump system power consumption information; and concurrently operating, upon demand, the heat pump system and a chiller system in opposite heating modes; wherein, when the chiller system operates in a cooling mode, the processor processes the cost data and information, system parameter data, and flow and power consumption information, and controls the systems based on the criteria.

The invention relates to the field of household appliances, in particular to a dish-washing machine heat recovery device and method and a dish-washing machine. The dish-washing machine heat recovery device comprises an outer-side water tank and a heat exchange device arranged in the outer-side water tank and used for performing heat exchange with water in the outer-side water tank, a cold water inlet and a hot water outlet are formed in the outer-side water tank, and the outer-side water tank is communicated with an outside water source through a cold water inlet and is communicated with a dish-washing machine inner container through a hot water outlet. A water inlet for feeding water into the heat exchange device and a water outlet for discharging water of the heat exchange device are further formed in the outer-side water tank, the heat exchange device is communicated with the dish-washing machine inner container through the water inlet and is communicated with a water discharging pipe through the water outlet. The heat recovery device can recover hot water at a recovery washing stage, improves the water temperature of water used at a hot-rinsing stage in a heat exchange mode, further reduces a heating temperature point of the water used at the hot-rinsing stage, reduces power consumption and does not produce power consumption in the hot water recovery process at a washing stage.