281results about How to "Reduce water flow" patented technology

Freeze wells may be used to isolate an area for soil remediation. Freeze wells may form a frozen barrier around a treatment area. The frozen barrier may inhibit fluid from entering into the treatment area. The frozen barrier may also inhibit migration of contamination out of the treatment area. The frozen barrier may be used to surround all of the perimeter of the treatment area. A frozen barrier may also be formed above or below a treatment area. Freeze wells may be activated in advance of soil remediation so that a frozen barrier is formed when soil remediation is begun. The soil remediation may be accomplished by any type of soil remediation system, including a thermal soil remediation system. Heaters of a thermal soil remediation system may be may be placed close to the frozen barrier without the barrier being broken through during remediation.

A control system is disclosed for regulating the flow of a liquid from a liquid provider through a liquid distribution system. The distribution system has a major liquid distribution channel connected to a plurality of minor liquid distribution channels providing the liquid to a multiplicity of users. A plurality of controllable user valves are interposed in the multiplicity of user channels. A liquid monitor senses a liquid flow characteristic within the liquid distribution channel. A user control changes selective controllable user valves for restoring a desired liquid flow characteristic within the liquid distribution channel.

The invention relates to a multi-operating mode energy-saving controlled combined type thermostatic and humidistatic air conditioning unit with a thermometal compound box body structure special for nuclear power stations. The air conditioning unit comprises a control system and a box body structure, wherein a primary-efficiency filter, a medium-efficiency filter, a surface cooler, a heater, a humidifier and a blow-off device are sequentially arranged in the box body; the front side of the primary-efficiency filter is provided with a fresh air and return air mixing section, and inlets of fresh air and return air are respectively provided with a fresh air proportioning valve and a return air proportioning valve; the control system adopts a programmable logic controller (PLC) and adopts air conditioning multi-operating mode zone control to realize the energy-saving operation of the unit; the surface cooler adopts a large temperature difference cold water heat exchanging technology and can save the investment and operation expenses of a water system; and the box body adopts a double-layer compound structure and an anti-shock device to meet the special requirements on the nuclear power stations. The invention has the characteristics of high efficiency, energy saving, good tightness, strong anti-shock capacity, safety, reliability, long service life, and the like.

A control system and method are provided for the controlling of steam supplies used by a steam turbine driven chiller unit. The steam turbine can receive steam from a high pressure steam source and/or a low pressure steam source depending on the operating mode of the steam turbine. The high pressure steam is used for operating at the steam turbine at rated speed and to provide the breakaway torque when starting the steam turbine. The low pressure steam is used for extending idling of the steam turbine that enables the steam turbine to transition more quickly to rated speed when desired.

The invention discloses an initial rainwater and mixed rain-sewage overflow water impounding sewage facility comprising a rainwater guide canal and a regulation reservoir arranged beside the rainwater guide canal. The rainwater guide canal is provided with a sinking intercepting channel which is provided with a side guide port communicated with the regulation reservoir. A grille area, a wetland filter plant area and a seepage filter area are arranged in the regulation reservoir sequentially along the water flow direction. Initial rainwater and mixed rain-sewage overflow water are low in flow; when guided via the rainwater guide canal, the initial rainwater and the mixed rain-sewage overflow water fall and flow into the intercepting channel at first and then flow into the regulation reservoir for purification, through the side guide port of the intercepting channel; with the passage of time, water level of the regulation reservoir rises, the intercepting channel is supported up to raise the water level thereof, and accordingly when flowing by the intercepting channel, late rainwater directly overflows from the intercepting channel and flows into downstream water through the lower segment of the rainwater guide canal; therefore, the initial rainwater and mixed rain-sewage overflow water which are severely contaminated, and the late rainwater, which is clean, are discharged separately.

A device or system for controlling fluid flow in a well includes a flow restriction member that transitions from a first effective density to a second effective density in response to a change in composition of the flowing fluid. The flow restriction member may increase in effective density as the water cut of the flowing fluid increases and/or disintegrate when exposed to a selected fluid in the flowing fluid. The flow restriction member may be formed of a water-absorbing material and/or a porous material. The pores may be water permeable but not oil permeable. A method for producing fluid from a subterranean formation includes controlling a flow of fluid into a wellbore tubular with a flow restriction member. The method may include reducing a flow of water into the wellbore tubular when a percentage of water in the flowing fluid reaches a predetermined value.

A cooling device for an engine that can raise the temperature of cooling water within a short period of time during the warm-up operation and allows a simple structure. The cooling device has a radiator circulation flow channel for circulation via an engine, a radiator, and a thermostat; a heater circulation flow channel for circulation via the engine, a heater core, and the thermostat; a bypass circulation flow channel for circulation via the engine and the thermostat; an electronically controlled valve; and a pump. The radiator circulation flow channel, heater circulation flow channel, and bypass circulation flow channel merge in the thermostat and form a common flow channel between the thermostat and the engine. The pump is provided in the common flow channel. At the start of the warm-up period and during the warm-up operation, the circulation in the radiator circulation flow channel is substantially stopped by the thermostat, cooling water circulation is actuated in the bypass circulation flow channel, and an opening degree of the electronically controlled valve is gradually increased from a minimum as the cooling water temperature rises. At the end of the warm-up period, circulation is actuated in the radiator circulation flow channel and substantially stopped in the bypass circulation flow channel.

A gas temperature control system for maintaining a desired economizer outlet gas temperature across a range of boiler loads comprises a plurality of tubular configurations having surfaces that are in contact with the flue gas. Each tubular configuration, preferably, comprises a plurality of serpentine or stringer tubes arranged horizontally or vertically back and forth within the economizer, and each tubular configuration having a separate feedwater inlet. Heat transfer from the flue gas is accomplished by controlling the feedwater flow rates through the tubular configurations. In a temperature control system having two tubular configurations, the overall heat transfer capacity of the economizer may be reduced to maintain the desired economizer outlet gas temperature during low boiler loads by reducing feedwater flow through one tubular configuration and by overflowing the other tubular configuration, such that total flow of feedwater through the economizer is maintained substantially constant. Feedwater flow rate entering the economizer may be used to engage/disengage the economizer water internal proportion or bias system. Once engaged, the measured feedwater flow to the economizer is used to generate a proportioned or biased flow rate demand signal. The demand signal is then compared to the measured underflow proportioned or biased flow rate. If there is a difference between the demand signal flow rate and the measured flow rate, control valve(s) modulating the proportioned or biased flow is/are adjusted.

A hot water supply and heating system 1a includes a heating flow rate changing valve 44 that changes the flow rate of hot water flowing through a heating pipe 46 and a priority controller 53a that carries out hot water supply priority control whereby to reduce the flow rate of the hot water flowing through the heating pipe 46 by the heating flow rate changing valve 44 in the case where the total of the amount of heat consumed in a heating operation and the amount of heat consumed in a hot water supply operation is equal to or more than a maximum amount of heat that can be applied by the heat source machine 10 during a simultaneous operation of the heating operation and the hot water supply operation.

The invention discloses a method for reducing a water flow of an air conditioning system and a dynamic temperature difference flow regulating valve. The air conditioning system is composed of devices of a cooling main machine, a heating main machine, a water pump, a fan, a heat exchanging coil pipe and the like. The dynamic temperature difference flow regulating valve comprises a water flow regulating valve, a driver, heat exchanging coil pipe water inlet and outlet temperature sensors, a controller, an indoor air temperature sensor, an indoor air temperature setting device or an indoor cooling and heating load calculator. In the cooling work condition, the controller independently runs after the temperature sensors detect water temperatures and always keeps temperature difference of inlet and outlet water to be at the optimum value so that cooling and dehumidification effects can be guaranteed, and the phenomenon that large flow and small temperature difference occur to a water system is avoided; in the dry cooling work condition or the heating work condition, the controller always keeps the temperature difference of the inlet and outlet water to be at the maximum value according to the indoor air temperature sensor and the indoor air temperature setting device or the indoor cooling and heating load calculator, namely, the dynamic temperature difference flow regulating valve can achieve minimum flow operation in multiple work conditions, and energy consumption of the water pump is further reduced.

A wall-mounted faucet control module that can be applied to different water control valves with different sizes, includes two control handles, two transforming heads, a restricting device and a panel set, wherein detachable transforming heads and conversion block are located at the receiving space of two control handles, and the panel set has detachable adjusting sheets and positioning sleeves, The conversion block is located at the receiving space of the control handle, so that the wall-mounted faucet control module can be used for water control bases of different sizes to increase the practicability of the faucet handle and panel set, and increase the convenience in assembly process.

A heat exchanger which is adapted to an existing water tank to allow it to be heated or cooled using a hot or cold toxic or non-toxic liquid. Solar collectors and heat pumps can provide hot or cold liquids. To transfer this heat cheaply and economically to an existing hot or cold, water tank requires a simple efficient heat exchange, which can be easily adapted to the existing tank. The invention recited fills this need by simply screwing into the existing hot or cold, water tank and allow heat or cold to be added or extracted via a simple fluid loop, which is single wall isolated for non-toxic heat exchange fluids and double wall isolated for toxic heat exchange fluids.

The invention discloses a method of reducing water pump energy consumption and improving host machine efficiency through installing a water flow regulating valve with constant inlet and outlet water temperature difference at the water inlet or the water outlet of an air conditioner system heat exchange coil, and the water flow regulating valve with constant inlet and outlet water temperature difference used for realizing the method. The water flow regulating valve with constant inlet and outlet water temperature difference is formed by a water inlet temperature sensor, a water outlet temperature sensor, a controller, a water flow regulating valve and a regulating valve driver. When the flow and the temperature of air on the air side of the heat exchange coil are varied, after the controller makes a comparison between internal preset corresponding temperature difference and actual inlet and outlet water temperature difference according to the different inlet water temperatures detected by the sensor, the controller outputs a signal to the regulating valve driver to vary water flow to keep the inlet and outlet water temperature difference to be unchanged and to prevent the situation of large flow and small temperature difference from occurring in the system. The controller is connected with the indoor temperature controller of the heat exchange coil. After a closing signal output by the indoor temperature controller of the heat exchange coil is received, the water flow regulating valve is fully closed.

The present invention relates to a simple hydraulic power unit which comprises a foldable-wing type waterwheel generating device arranged between pipes and rotates under inflow water pressure. The generating device comprises a cam-type water wheel, a rotating shaft arranged in the center of the cam-type water wheel, and a generating mechanism arranged at one end of the rotating shaft and converting kinetic energy into electricity. The cam-type water wheel comprises a cylindrical body having a rotating shaft inserted in the center and rotating with the rotating shaft, two telescopic blades spacedly arranged on the periphery of the cylindrical body and making the cylindrical body to rotate under inflow water pressure, and cam type slot covers arranged at two side surfaces of the cylindrical body and allowing the telescopic blades to withdraw or protrude along the inner side surface as rotation of the cylindrical body. The simple hydraulic power unit enables the generation of a substantial amount of electricity with a low flow rate and speed.