500results about How to "Improve water efficiency" patented technology

A computer-implemented method is disclosed for providing a customer engagement platform to increase residential water-user efficiency with one or more servers programmed to execute the method. The method comprising estimating, with the one or more servers, outdoor irrigable area of a household, wherein the estimating includes calculating outdoor irrigable land of the household for estimating outdoor water usage of the household.

A method and system for monitoring the dynamic response of soil moisture and setting a threshold in relation to the field capacity of a soil area is disclosed herein. By measuring the dynamic response of soil moisture under wet soil conditions, one can determine a practical field capacity for the soil, in-situ, based solely on the soil moisture sensor output. Essentially, by looking at how the soil moisture level varies with time one can determine the field capacity.

A plant develop rack includes a base, plural soil packages, a water supply device, and a water collecting tank. Plural rack units are disposed on the base and are arranged vertically. Each soil package encloses growth medium and plant and forms plural openings for the plant to extend outward. The water supply device is located above the rack units. Thereby, when the water supply provides water to the most upper rack unit, water may enter the soil package on that rack unit to nourish the plant. Thereafter, excess water may flow downward via draining holes of the rack unit to reach lower rack units. Thus, the soil packages on all rack units can acquire sufficient water for growing the plant.

Apparatus for managing layers of different density includes an enclosed tank for holding the liquids so that they stratify into separate layers of different levels in the tank. A conduit for liquid in the tank is open at an inner end to the tank interior, and is open at an outer end to the tank exterior. A drive moves the inner end of the conduit to different levels within tank so liquid can be transferred into or out of different levels in the tank.

The invention provides an irrigation area monitoring method and device and belongs to the field of irrigation water management. The irrigation area monitoring method comprises step 1) respectively selecting remote-sensing images before and after irrigation according to irrigation time, and conducting data preprocessing to the selected remote-sensing images; step 2) laying ground marking points and collecting information which indicates whether the marking points are irrigated or not; step 3) respectively computing MPDIs (Modified Perpendicular Drought Indexes) before and after irrigation by using the preprocessed remote-sensing images before and after irrigation; step 4) computing MPDI difference before and after irrigation in an irrigation region, and determining an MPDI difference threshold in combination with the information which indicates whether the marking points are irrigated or not; step 5) extracting the area with the MPDI difference which is larger than the MPDI difference threshold as the actual irrigation area of the irrigation region. The technical scheme provided by the invention can effectively monitor the actual irrigation area of the irrigation region.

The present invention relates to a hot water supply system that heats low-temperature water flowing into an inlet at a high temperature by using a heating device and supplies the high-temperature water through an outlet. The hot water supply system according to the present invention includes a heat exchanger that transmits heat of the heating device to the inflow water so as to supply the inflow water at a user set temperature; a flow sensor that measures a flow rate of the water flowing into the hot water supply system; a water tank that stores water discharged from the heat exchanger, a temperature sensor that is installed at a predetermined position on a pipe through which the water flows; and a controller that has an input unit to allow a user to input desired conditions, wherein the controller controls the operation of the heating device by comparing the user set temperature with a temperature measured by the temperature sensor and controls the operation of the heating device depending on variation in the flow rate measured by the flow sensor.

A ventilating hood for a water heater includes a housing having an inside formed with an air chamber, a substantially V-shaped guide board mounted in the air chamber of the housing and located between two opposite sides of the housing, and two movable boards each pivotally mounted on a respective one of the two opposite sides of the housing and each facing the guide board. Thus, the waste gas is drained outwardly from the air outlet ports of the housing smoothly and exactly by guidance of the guide board and the movable boards, thereby enhancing the air circulation in the air chamber of the housing, and thereby enhancing the working efficiency of the water heater.

The invention discloses a water-saving irrigation and fertilizing method and a device thereof. The method mainly comprises the following steps: digging a plurality of vertical holes in soil around a plant root, then inserting a fertilizer rod made of a fertilizer into each vertical hole, and instilling irrigation water into the fertilizer rod in a stable and small amount manner by a water supply device to cause the irrigation water to be guided into the basement soil via the fertilizer rod and absorbed by the plant root; and adding a water soluble fertilizer as an additional fertilizer to the irrigation water in the water supply device to cause the water soluble fertilizer to go into the soil along with the irrigation water.

A water electrolysis system includes a high-pressure hydrogen production unit for electrolyzing water to generate oxygen and high-pressure hydrogen (the pressure of the high-pressure hydrogen being higher than that of the oxygen), and a gas-liquid separation unit for removing water contained in the high-pressure hydrogen. The gas-liquid separation unit is placed on a hydrogen pipe for discharging the high-pressure hydrogen from the high-pressure hydrogen production unit. In addition, the water electrolysis system includes a high-pressure hydrogen supply pipe for transferring dewatered high-pressure hydrogen from the gas-liquid separation unit, a cooling unit, which is placed on the high-pressure hydrogen supply pipe and is capable of variably controlling the temperature of the high-pressure hydrogen to adjust the humidity of the high-pressure hydrogen, and a control unit.

The invention discloses an intelligent water sprinkler. The intelligent water sprinkler comprises a water sprinkler body, a water storing tank, a water pump, spraying heads, distance sensors, a main control unit and an electric telescopic rod, wherein the water storing tank is mounted on the water sprinkler body; the water pump is mounted on the water sprinkler body and communicated with the water storing tank; the spraying heads are communicated with water outlet ends of the water pump through a pipe body; the distance sensors are arranged at the side parts of the water sprinkler body; the main control unit is mounted on the water sprinkler body; the electric telescopic rod is positioned at the upper part of the water sprinkler body and arranged on the outer side of the pipe body in a sleeving manner; the distance sensors and the electric telescopic rod are electrically connected with the main control unit. The intelligent water sprinkler disclosed by the invention can automatically regulate a sprinkling range, so that sprinkling irrigation water fully covers the sprinkling range, and the water-use efficiency is improved; besides, the intelligent water sprinkler is convenient to operate and high in efficiency; the intelligent water sprinkler disclosed by the invention is wide in application range and can be used for sprinkling irrigation of urban green land and green belts and irrigation of agricultural production.

A small-sized hydroelectric power generating apparatus includes a body case having a fluid passage, a water wheel provided at the above fluid passage and rotating with passing of the fluid having the predetermined flowing amount, a rotator coupled to this water wheel, and rotating with the water wheel, the rotator serving as a rotor portion arranged opposed to a stator portion, the rotor portion being relatively rotated in relation to the stator portion by passing the fluid to generate electric power, the stator portion having comb-shaped pole teeth which are arranged in the circumferential direction at regular intervals so as to be opposed to the peripheral surface of a rotor magnet of the above rotor portion, and a circumferential gap between the adjacent pole teeth is set to 1.5 times or less the size of a radial gap between each pole tooth and the rotor magnet.

Provided are a filter assembly for a dishwasher and a dishwasher having the same. In the filter assembly for the dishwasher and the dishwasher having the same, since a cylindrical filter unit is formed through a plate filter unit, the entire area of an inside of a filter frame can be implemented as a filtering area where foreign materials contained in water circulating toward dishes to be washed up are filtered off. Accordingly, the extended filtering area can increase an amount of water supplied onto the dishes, thus to enhance an efficiency of water circulation. Also, a possibility that a filter is blocked due to foreign materials covering all over the filtering area can remarkably be reduced. Since the cylindrical filter unit is formed through the plate filter unit, the entire size of the filter assembly can be decreased with maintaining the filtering area of the filter assembly. Hence, no great installation space for a compact dishwasher is required, thereby facilitating the installation of the dishwasher.

A solar module cleaner can be configured for cleaning reflective surfaces of solar concentrator reflectors. The cleaner can include at least one cleaning module having a cleaning surface extending in a curved configuration corresponding to a curvature of the solar concentrator reflector. The cleaning surface can be configured to displace debris resting on the reflective surface. The cleaner can include fluid delivery devices for discharging a cleaning fluid onto the reflective surface. The cleaner can be configured to clean solar energy receivers associated with a solar concentrator reflector. Additionally, the cleaner can be configured to simultaneously clean a plurality of parallel solar concentrator reflectors. Optionally, the cleaner can be configured to simultaneously clean a plurality of solar energy receivers and a plurality of solar energy concentrators.

A hot water heater or similar heating device includes equipment for pre-cooling hot flue gas while preheating water for the water heater. It further includes a heat and mass exchanger for transferring heat and water from the pre-cooled flue gas to combustion air for the hot water heater. The pre-cooler may comprise a separate device or may be incorporated as part of a condensing water heater. The heat and mass exchanger may use membranes having condensing sides and evaporating sides, which allow water to pass from the condensing sides to the evaporating sides. It may further comprise troughs for wetting the membranes.

The invention provides a seawater desalination preparation device, comprising a water inlet unit (a), a pretreatment unit (b) and a reverse osmosis unit (c) which are connected according to the water inflow sequence, wherein, the water inlet unit (a) is used for sending seawater to be desalinized to the pretreatment unit, and the seawater to be desalinized is drainage of uniflow circulated cooling water from an electric power plant; the pretreatment unit (b) comprises a precipitation device and a filtration device which are connected according to the water inflow sequence, wherein, the upper stream of the precipitation device is connected with a water inlet unit, while the down stream of the precipitation device is connected with the filtration device; and the reverse osmosis unit (c) comprises a boost device, an energy recovery device and a reverse osmosis device which are connected according to the water inflow sequence, wherein, the upper stream of the boost device is communicated with the filtration device in the pretreatment unit, while the down stream of the boost device is communicated with the reverse osmosis device. The seawater desalination preparation device has low cost, thereby the device can be popularized in a large scale and protect environment with scale merit, and can be used for preparing ultrapure water.

The invention discloses an intelligent lawn nursing robot system. The system comprises a base station and an intelligent lawn nursing robot. The intelligent lawn nursing robot comprises a shell, a moving module, a cutting module, a control module and a watering module; the moving module is used for driving the shell to move; the cutting module is used for working in a predetermined working area under the weeding mode; the control module is used for controlling the cutting module and the watering module to work; the watering module is used for watering a lawn in a watering mode; the base station is arranged to be independent from the intelligent lawn nursing robot and connected with the watering module, and the intelligent lawn nursing robot is in butt joint with the base station under thewatering mode and triggers the base station to provide a water source required for current watering for the watering module. According to the intelligent lawn nursing robot system, when the watering module waters the lawn, the intelligent lawn nursing robot does not need to walk, the watering module conducts watering according to a watering map, a sufficient water source is provided by the base station, water adding in the process is omitted, and the time and labor are saved.

The present invention generally relates to the field of genetic engineering and obtaining transgenic traits for agronomic applications. More specifically, the present invention relates to a specific transgenic event in agricultural crops that improves plant characteristics. Yet more specifically, the invention relates to a polynucleotide construct comprising a gene from Arabidopsis thaliana. In particular, the polynucleotide construct of the invention comprises the gene AtBBX21 which encodes a B-box protein from Arabidopsis thaliana. The transgenic event of the invention increases green and seed yield, reduces photoinhibition, improves water use efficiency, increases tuber and chlorophyll production and improves photosynthetic rates, among others. The polynucleotide construct of the invention comprises a sequence depicted as SEQ ID NO: 1. The invention also provides a transgenic plant transformed with said polynucleotide construct, wherein said plant exhibits improved characteristics. In a particularly preferred embodiment, the transgenic plant is a potato (Solanum tuberosum) plant that overexpresses a gene from Arabidopsis thaliana, wherein said potato plant exhibits improved characteristics.

The application discloses a plant watering reminding method, device, equipment and storage medium, and it belongs to the field of image data processing. The method includes: acquiring a target video,wherein the target video includes an appearance image of the plant; extracting a part image corresponding to different parts of the plant from the target video, the part image comprises at least one of a leaf part image, a stem image and a root image; inputting a part image into a water content prediction model to obtain the water content of the plant, water content prediction model is obtained from the sample part image and sample water content date training; performing watering reminding according to the water content; In the embodiment of the application, since the water content predictionmodel is obtained from training a large number of sample part images and sample water content data, as a result, the predicted water content can truly reflect the current water shortage state of the plant, so that the user can irrigate the plants at a suitable time according to the watering reminding.

The present invention provides a method for manufacturing a closed impeller that has a simple configuration and enables fusion in a very accurate position. The method includes: forming a frustum-shaped front plate and a disk-shaped base plate formed therebelow, upper surfaces of a plurality of unit impeller blade plates made from a synthetic resin extending in radial directions which are formed as impeller blade tip surfaces, with sharp-pointed ridge-like protrusions having an acute upper end and a width less than a width of the impeller blade tip surface being integrally formed on the impeller blade tip surfaces. In the method, an inner surface of the front plate and the plurality of impeller blade tip surfaces are formed as parts of conical surfaces and formed so that the cone apex angles of the two conical surfaces are equal to each other. Then, the front plate is placed on the impeller blade and the ends of the sharp-pointed ridge-like protrusions and the inner surface of the front plate are brought into contact with each other. Small vibrations are then provided while applying an appropriate pressurizing force between the front plate and the impeller blade having the base plate attached thereto, the sharp-pointed ridge-like protrusions are melted, and the front plate is fused to the tip surfaces of the impeller blade.

The invention discloses a household sprinkling device. The household sprinkling device comprises a bearing plate, wherein a lifting sprinkling mechanism is arranged on the upper surface of the bearing plate; a vertical rod is arranged on the upper surface of the bearing plate and positioned on one side of each of two sets of circular grooves 1; a vertical mounting plate is arranged on the upper surface of the vertical rod; a controller is arranged on the front surface of the vertical mounting plate; a municipal electricity interface is formed in the back surface of the bearing plate; the power cord connecting end of the controller is connected with the municipal electricity interface through a conductive wire; the output end of the controller is connected with a hydraulic cylinder, an electric trolley 1, an electric trolley 2 and an electric push rod through conductive wires. The household sprinkling device has the beneficial effects as follows: the household sprinkling device can water each potted plant uniformly, saves manpower, improves the watering efficiency, reduces economic loss and is convenient and fast in movement and convenient to use.