The invention discloses a dual-cold source four-pipe-system air conditioner system. The dual-cold source four-pipe-system air conditioner system comprises air conditioner terminals provided with high-temperature surface cooling sections and low-temperature surface cooling sections and a cold source system for providing cooling capacity for the air conditioner terminals; the cold source system comprises a high-temperature cold source for providing the cooling capacity for the high-temperature surface cooling sections and a low-temperature cold source for providing the cooling capacity for the low-temperature surface cooling sections; the high-temperature cold source and the high-temperature surface cooling sections are connected through a high-temperature water supply pipeline provided with a high-temperature water segregator and a high-temperature water return pipeline provided with a high-temperature water collector; and the low-temperature cold source and the low-temperature surface cooling sections are connected through a low-temperature water supply pipeline provided with a low-temperature water segregator and a low-temperature water return pipeline provided with a low-temperature water collector. According to the dual-cold source four-pipe-system air conditioner system, under the precondition that the total capacity of a whole air conditioner water chilling unit is unchanged, the ratio of load borne by a high-temperature unit is increased to the greatest extent through reasonably allocating the ratio of the air conditioner load borne by the high-temperature unit and a low-temperature unit, so that the energy consumption of the cooling load of the whole air conditioner system is greatly lowered, and the air conditioner system is an energy-saving-type air conditioner system.

Dual-cold-source three-pipe-system air conditioner system

The invention discloses a radiation air conditioning system based on combination of evaporative cooling and mechanical refrigeration, comprising a cold/hot water unit A combining evaporative cooling and mechanical refrigeration, an evaporative cooling fresh air handling unit B, capillary terminals C arranged on the roof and walls inside the room at the radiation terminal and PERT cold/hot coils Dlaid on the floor inside the room at the radiation terminal, wherein a replacement ventilator is arranged at the air inlet inside the room at the radiation terminal; the above components are connected by pipelines to form a circuit; and the cold/hot water unit A comprises an evaporative cold water unit E and an air-cooled heat pump type cold/hot water unit F. The radiation air conditioning systemcombines evaporative cooling and mechanical refrigeration, expands the application range of the evaporative cooling technology and is not only suitable for the northwestern dry areas but also widely applied to the medium-humidity and high-humidity areas. In addition, the radiation air conditioning system can supply cold to the radiation terminal in summer and supply heat in winter, realize dual purposes and reduce initial investment.

Radiation air conditioning system based on combination of evaporative cooling and mechanical refrigeration

The invention discloses a parallel multi-branch cooling water distribution and adjustment system which comprises a cooling water source, a main cooling water supply path and a main cooling water return path which form a loop and are suitable for cooling a plurality of parts required to be cooled, a water distribution box communicated with the main cooling water supply path, and a plurality of parallel cooling water supply branches each with one end communicated with the water distribution box and the other end correspondingly communicated with one of the plurality of parts required to be cooled, wherein a branch adjustment valve and a branch flow meter are arranged on the cooling water supply branch

Parallel multi-branch cooling water distribution and adjustment system

The invention discloses a run control method of an air purifier. After the air purifier is electrified, a humidity sensor is detected firstly, if the state of the humidity sensor is not normal, a panel displays the failure; if the state of the humidity is normal, whether a button circuit is locked or not before the previous power failure is detected; if the button circuit is not locked, a normal standby state is entered; and if the button circuit is locked, a remote controller standby state is entered. In the normal standby state, a switch button on a remote controller or buttons of the panel is started, the system enters into in an intelligently automatic mode automatically; and in the remote controller standby state, the switch button on the remote controller is started, and the system enters into the intelligently automatic mode. And in the remote controller standby state, the normal standby state can be converted by long-pressing a child-lock button.

Run control method of air purifier

The invention discloses a method for controlling the number of pumps which has a step of increasing/decreasing the number of operating pumps on the basis of the flow rate of a heating medium that is pumped to a load (40) by a plurality of pumps connected in parallel or the thermal load required by the load, and a frequency command value sent to the pumps of the plurality of pumps that are operating.

Method for controlling number of pumps, device for controlling number of pumps, pump system, heat source system, and program

The utility model discloses a primary pump variable flow system with an evaporative water chiller, which is formed by connecting and combining a cold source side with a load side by a pipe network. The cold source side consists of the evaporative water chiller and a plurality of circulating pumps. The load side comprises a water distributor, an air conditioning tail end, an electric two-way valve and a water collector which are connected sequentially according to the water flow direction. A differential pressure controller is connected in series between the water distributor and the water collector so as to be respectively in signal connection with a fan of the evaporative water chiller and the circulating pumps. The system carries out continuous regulation on the circulating pumps and the fan by utilizing effects of the differential pressure controller, not only can carry out number control on the circulating pumps, but also can carry out frequency conversion adjustment on the circulating pumps and correspondingly regulates air quantity of the exhaust fan of the evaporative water chiller with variation of the load side so as to reduce conveying energy consumption.

Primary pump variable flow system with evaporative water chiller

An air-conditioning device combining evaporation cooling and mechanical refrigeration comprises a cold-hot water unit A which combines evaporation cooling and mechanical refrigeration evaporation cooling, an evaporation cooling fresh air unit B, a capillary tube tail ends C arranged on a roof and walls of a radiation tail-end room, PERT cold/hot coil pipe D laid on the floor board in the radiation tail-end room, a displacement ventilator arranged at an air inlet in the radiation tail-end room which are connected into a loop through a pipeline, wherein the cold-hot water unit A which combines evaporation cooling and mechanical refrigeration evaporation cooling comprises an evaporation cooling-water unit E and an air-cooling heat pump type cold-hot water unit F. In the radiation air-conditioning device provided by the utility model, the evaporation cooling and the mechanical refrigeration are combined, the technical application range of evaporation cooling is enlarged, therefore the air-conditioning device is not only suitable for dry areas in the northwest but also can be widely applied to middle and high humidity areas, and can provide cooling for the radiation tail-end in summer and heating in winter, thereby realizing dual-purpose of the equipment and reducing system initial cost.

Air-conditioning device combining evaporation cooling and mechanical refrigeration

The invention discloses a method for realizing the continuous regulation of a primary pump variable flow system by using an evaporative water cooling machine set, the evaporative water cooling machine set is adopted as a cold source at the cold source side of the primary pump variable flow system, and a pressure difference controller is connected in series between a water separator and a water collector at a load side, so that the pressure difference controller is respectively connected with a fan and a circulating pump of the evaporative water cooling machine set through signals and the circulating pump and the fan are continuously regulated under the action of the pressure difference controller. in addition, not only operation platform number control can be carried out on the circulating pump is not only subjected to operation platform number control, but also to variable frequency modulation, and the air volume of the exhaust fan of the evaporative water cooling machine set is correspondingly regulated along with the change of the load side, thereby saving transportation energy consumption.

Method for realizing continuous regulation of primary pump variable flow system by using evaporative water cooling machine set

The utility model discloses an automatic control device of a semi-centralized evaporative cooling-mechanical cooling combined air-conditioning system, which comprises an upper computer and a control cabinet, wherein the upper computer is preassembled with configuration software, and the control cabinet is internally provided with a controller and a touch screen which are connected with each other, and the controller adopts a programmable logic controller (PLC). The automatic control device closely combines the specific application with the automatic control of the evaporative cooling air conditioning, realizes the real-time monitoring and the failure warning to a filter, a fan, a frequency converter, a water pump, a heater, a temperature sensor, a humidity sensor and the like, guarantees the safety and the best energy conservation of the system, completes configuration software with a monitoring picture of a central station, realizes the functions of centralized controlling, data recording, printing and the like, offers the detailed data to field apparatus maintenance personnel, and leads the operation and the maintenance work to be simper.

Automatic control device of semi-centralized evaporative cooling-mechanical cooling combined air-conditioning system

The utility model discloses a semi-centralized evaporation cooling composite air-conditioning system, comprising an evaporation type cold water unit, an evaporation cooling fresh-air unit, a mechanical refrigeration cold-water unit and a dry condition fan coil pipe which are connected by a pipe network. The air-conditioning system expands the application range of the dry condition fan coil pipe and the fresh-air system to the intermediate-humidity regions, solves the problem of cold sources of the dry condition fan coil pipe in the intermediate-humidity regions, and has obvious advantage of energy conservation.

Semi-centralized evaporation cooling composite air-conditioning system

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