CN202221129U - Vacuum regeneration solution air dehumidifying system and humiture independent regulation and control air-conditioning system - Google Patents

Abstract

The utility model discloses a vacuum regeneration solution air dehumidification system and an air conditioning system for independent regulation and control of temperature and humidity. When the solution enters the regenerator, the pressure difference can be used. There is no need to set up a dilute solution pump and a cooling tower. It can use a low-temperature heat source for solution regeneration, an economical and energy-saving dehumidification system, and an air-conditioning system that independently regulates temperature and humidity. The dehumidification system includes a dehumidifier and a vacuum regeneration device. The dehumidifier is provided with an air inlet and an air outlet. The regenerator of the vacuum regeneration device is connected with a vacuum pump, a vent valve and a pressure gauge. A low-temperature heat source heater is installed inside the regenerator; dehumidification The solution outlet of the regenerator is connected to the dilute solution inlet of the regenerator through a flow control valve, the concentrated solution outlet of the regenerator is connected to the solution inlet of the dehumidifier through a solution pump, and the two sides of the solution pump are respectively connected with stop valves. The system structure is simple and the energy consumption is low.

Description

Vacuum regeneration solution air dehumidification system and independent temperature and humidity control air conditioning system

technical field

The utility model relates to a vacuum regeneration solution air dehumidification system and an air conditioning system for independent regulation and control of temperature and humidity.

Background technique

Facing the current serious problems of energy shortage and environmental pollution, alternative working fluids and refrigeration methods without ozone depletion and greenhouse effect, as well as various new air dehumidification systems using low-grade energy have become research hotspots in the field of air conditioning. From the perspectives of protecting the environment, saving energy and improving indoor air quality, the solution air dehumidification system is a very attractive new dehumidification system. At present, most scholars choose a solution with a higher concentration to achieve dehumidification. The regeneration temperature is relatively high, usually a heat source above 60°C, while studies on regeneration at low temperatures (such as 45°C to 60°C) are rarely seen. The system COP value is low, and the phenomenon of cold and hot offset is more serious.

The existing solution air dehumidification system mainly has the following problems:

1. In the existing dehumidification system, the dehumidifier and the regenerator must be properly matched, and can only be operated at the same time to achieve the dehumidification function.

2. In the existing dehumidification system, dilute solution and concentrated solution are two systems, and solution pumps must be installed separately, and cooling towers are required to cool the heat released from the dehumidifier.

3. The cooling water system in the existing system is to cool the heat generated by the concentrated solution during the moisture absorption process, not to cool the concentrated solution itself. It is necessary to set up a heat exchange device for heat exchange between the dilute solution and the concentrated solution.

To sum up, the existing dehumidification system has complex structure, large investment and high energy consumption.

Utility model content

The utility model aims to overcome the deficiencies in the prior art, and provides a regeneration under vacuum condition, which can not only realize the energy efficiency enhancement of the dehumidifier and the regenerator respectively, but also enable the dehumidification and regeneration process to run independently, and at the same time When the solution enters the regenerator, the pressure difference can be used, and there is no need to set up a dilute solution pump, no cooling tower, and a low-temperature heat source can be used for solution regeneration, which is an economical and energy-saving dehumidification system.

Another purpose of this utility model is to provide an air conditioning system that performs regeneration under vacuum conditions, and the dehumidification and regeneration processes run independently, which can not only realize independent control of indoor temperature and humidity, but also use condensation heat as a low-temperature regeneration heat source to save energy. .

The utility model is realized through the following technical solutions:

A vacuum regeneration solution air dehumidification system, characterized in that it includes a dehumidifier and a vacuum regeneration device, the bottom of the dehumidifier is provided with a liquid storage tank, and the dehumidifier is provided with an air inlet and an air outlet. A fan is installed; the vacuum regenerator includes a regenerator, the regenerator is connected with a vacuum pump, a vent valve and a pressure gauge, and a low-temperature heat source heater is installed inside the regenerator; the solution outlet of the dehumidifier is controlled by a flow rate The valve is connected to the dilute solution inlet of the regenerator, the concentrated solution outlet of the regenerator is connected to the solution inlet of the dehumidifier through a solution pump, and stop valves are respectively connected to both sides of the solution pump.

A vacuum regeneration solution air dehumidification system, characterized in that it includes a dehumidifier, a vacuum regeneration device and a liquid storage tank, the bottom of the dehumidifier is provided with a liquid storage tank, and the dehumidifier is provided with an air inlet and an air outlet. A blower fan is installed at the air inlet; the vacuum regeneration device includes a regenerator connected with a vacuum pump, an air release valve and a pressure gauge, and a low-temperature heat source heater is installed inside the regenerator; the solution of the dehumidifier The outlet is connected to the dilute solution inlet of the regenerator through a flow control valve, and a liquid storage tank is arranged below the regenerator, and the concentrated solution outlet of the regenerator is connected to the concentrated solution of the liquid storage tank through a differential pressure control valve. The outlet of the concentrated solution of the liquid storage tank is connected to the solution inlet of the dehumidifier through a solution pump, and the two sides of the solution pump are respectively connected with stop valves.

An air conditioning system for temperature and humidity independent regulation and control using the above-mentioned vacuum regeneration solution air dehumidification system, characterized in that it includes a dehumidifier, a vacuum regeneration device, a liquid storage tank, a water catcher, a fan coil unit, and a compressor, an evaporator, an expansion A high-temperature chiller unit composed of a valve and a condenser connected, the bottom of the dehumidifier is provided with a liquid storage tank, the dehumidifier is provided with an air inlet and an air outlet, and a fan is installed at the air inlet; the vacuum regeneration device includes A regenerator, the regenerator is connected with a vacuum pump through a water catcher, a pressure gauge and a pressure relief valve are connected to the regenerator, and a low-temperature heat source heater is installed in the regenerator; the solution outlet of the dehumidifier passes through a flow The control valve is connected to the dilute solution inlet of the regenerator, a liquid storage tank is arranged below the regenerator, and the concentrated solution outlet of the regenerator is connected to the concentrated solution inlet of the liquid storage tank through a differential pressure control valve, The concentrated solution outlet of the liquid storage tank is connected with the solution inlet of the dehumidifier through a solution pump; the two ends of the low-temperature heat source heater are respectively connected with the two ends of the condenser in the high-temperature chiller, and the solution pump Both sides are respectively connected with shut-off valves; a cooling coil is installed in the water catcher, and the cooling coil is connected to the evaporator through a dry fan coil to realize water catch; or the cooling coil is connected to a cooling tower to realize water catch , the two ends of the evaporator are respectively connected with the two ends of the dry fan coil unit.

The utility model has the following technical effects:

1. The solution air dehumidification system of the present invention performs regeneration under vacuum conditions, and the regeneration process can be operated independently, and the solution energy storage technology is used to realize energy saving and environmental protection.

2. In the solution air dehumidification system of the present invention, the dehumidifier and the regenerator operate independently, so the temperature of the concentrated solution entering the dehumidifier is relatively low, and no further cooling is required; while the concentrated solution absorbs moisture, the temperature rises, and it is just sent to the regenerator Regeneration does not require heat exchange. Therefore, the system can save the cooling water system and heat exchange device, which simplifies the system structure, reduces equipment investment, and reduces energy consumption.

3. The regenerator in the solution air dehumidification system of the present invention regenerates the dilute solution under vacuum conditions, and can adopt a lower heat source temperature, which can not only save energy, but also realize the use of more low-grade energy.

4. The temperature and humidity independent control air conditioning system of the utility model uses a high temperature chiller to obtain high temperature chilled water, processes the indoor heat load through a dry fan coil unit, and sends low humidity air processed by a vacuum solution dehumidification system into the room to process the indoor humidity load. The dehumidification process and regeneration process in the vacuum solution dehumidification system can be operated independently, and the concentrated solution can be used for energy storage technology to achieve energy saving and environmental protection; the vacuum regeneration device can be regenerated with a low-temperature heat source, and the regeneration can be realized only by using the waste heat of the condenser as a low-temperature heat source cycle, reduce energy consumption and energy grade, and at the same time increase the COP of high-temperature chillers.

Description of drawings

Fig. 1 is the schematic diagram of the solution air dehumidification system that the concentrated solution after the regeneration of the utility model is directly sent into the dehumidifier;

Fig. 2 is the schematic diagram of the solution air dehumidification system with liquid storage tank of the utility model;

Fig. 3 is the schematic diagram of the utility model adopting the temperature and humidity independent regulation and control air-conditioning system of high temperature and cold water catch;

Fig. 4 is a schematic diagram of the utility model adopting the cooling water provided by the cooling tower to catch water and independently regulating the air conditioning system.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The vacuum regeneration solution air dehumidification system of the utility model uses a salt solution vacuum regeneration device to regenerate the dilute solution, and the regenerated concentrated solution can be sent to a dehumidifier to dehumidify the air, and can also be stored in a liquid storage tank for use when needed. To the purpose of chemical energy storage.

Fig. 1 is the schematic diagram of the solution air dehumidification system that the concentrated solution after the regeneration of the utility model is directly sent into the dehumidifier, including a dehumidifier 2-1 and a vacuum regeneration device, the bottom of the dehumidifier 2-1 is provided with a liquid storage tank, and the dehumidifier 2 -1 is provided with an air inlet 1-1 and an air outlet 3-1, and a fan is installed at the air inlet. The vacuum regeneration device includes a regenerator 7-1, the regenerator 7-1 is connected with a vacuum pump 9-1, a vent valve 6-1 and a pressure gauge 5-1, and the regenerator 7-1 is installed with a low-temperature heat source for heating Device 8-1. The solution outlet of the dehumidifier 2-1 is connected to the dilute solution inlet of the regenerator 7-1 through the flow control valve 4-1, and the concentrated solution outlet of the regenerator 7-1 is connected to the dehumidifier 2-1 through the solution pump 12-1. The solution inlet is connected, and the two sides of the solution pump 12-1 are respectively connected with stop valves 13-1 and 14-1. Among them, the dehumidifier and regenerator can be arranged remotely or compactly, one regenerator can be connected to multiple dehumidifiers, or one dehumidifier can be connected to multiple regenerators. The stop valve 13-1 is used to close the solution outlet of the regenerator, and the stop valve 14-1 is used to adjust the flow rate of the solution pump.

The solution air dehumidification system shown in Figure 1 can only operate intermittently, that is, after the dilute solution completes the regeneration process in the vacuum regeneration device, the pressure relief valve is opened, and the regenerator of the vacuum regeneration device becomes normal pressure, and the concentrated solution is pumped to the The air is dehumidified in the dehumidifier, and the dehumidified dilute solution enters the vacuum regeneration device for regeneration to complete the entire cycle process.

Fig. 2 is the schematic diagram of the solution air dehumidification system with liquid storage tank of the utility model, comprises dehumidifier 2-2, vacuum regeneration device and liquid storage tank 11-1, and the bottom of dehumidifier 2-2 is provided with liquid storage tank, dehumidifier An air inlet 1-2 and an air outlet 3-2 are arranged on the 2-2, and a fan is installed at the air inlet 1-2. The vacuum regenerator includes a regenerator 7-2 connected to the regenerator 7-2 with a vacuum pump 9-2, a vent valve 6-2 and a pressure gauge 5-2, and a low-temperature heat source heater 8 is installed inside the regenerator 7-2 -2. The solution outlet of the dehumidifier 2-2 is connected to the dilute solution inlet of the regenerator 7-2 through the flow control valve 4-2, and the bottom of the regenerator 7-2 is provided with a liquid storage tank 11-1, and the thick solution of the regenerator 7-2 The solution outlet is connected to the concentrated solution inlet of the liquid storage tank 11-1 through the differential pressure control valve 10-1, and the concentrated solution outlet of the liquid storage tank 11-1 is connected to the solution inlet of the dehumidifier 2-2 through the solution pump 12-2. Both sides of the solution pump 12-2 are respectively connected with stop valves 13-2 and 14-2. Among them, the cut-off valve 13-2 and the differential pressure control valve 10-1 play the function of on-off, and the cut-off valve 14-2 plays the role of regulating the flow of the solution.

In the solution dehumidification system shown in Figure 2, the dehumidification and regeneration processes can be performed simultaneously. When the dehumidification work starts, it must be ensured that there is concentrated solution in the liquid storage tank 11-1. The concentrated solution is sent to the dehumidifier through the solution pump, and the dehumidified solution can be placed in the liquid storage tank under the dehumidifier first, or directly enter the regenerator through the flow control valve 4-2 under the action of pressure difference. In the regenerator, the dilute solution evaporates under the action of vacuum and low-temperature heat source to realize the regeneration process. The regeneration process can be carried out when the power consumption is low, which can play the role of shifting the power peak and filling the valley, and at the same time store the energy in the concentrated solution in the form of chemical energy. Compared with the conventional solution dehumidification system, the cooling tower and dilute solution pump can be omitted, the temperature of the regenerative heat source can be lower, the operation is more flexible, and the application range is wider. The dilute solution is regenerated under the action of vacuum and low-temperature heat source. After the regeneration is completed, the pressure relief valve is opened to make the regenerator become normal pressure. The pressure difference control valve is opened, and the concentrated solution flows into the liquid storage tank by gravity to complete the whole process of air dehumidification. .

Dehumidification and regeneration can also be performed separately. That is, the solution can be regenerated when not dehumidified, or dehumidified when not regenerated. When not dehumidifying, start the solution vacuum regeneration device, the dilute solution evaporates in the regenerator due to the vacuum and heat source to regenerate the solution, and the regenerated solution can be input into the liquid storage tank for dehumidification when needed. When not regenerating, since there is concentrated solution in the liquid storage tank, use the solution pump to input the concentrated solution into the dehumidifier, so that the air passing through the dehumidifier can be dehumidified, and the dehumidification process of the air is completed.

Fig. 3 and Fig. 4 are the schematic diagrams of the utility model temperature and humidity independent control air-conditioning system, including dehumidifier 2-3, vacuum regeneration device, liquid storage tank 11-2, water catcher 16, fan coil unit 17 and by compressor 20 , an evaporator 21, an expansion valve 19, and a condenser 18 are connected to form a high-temperature water chiller, a liquid storage tank is provided at the bottom of the dehumidifier 2-3, and an air inlet 1-3 and an air outlet 3 are arranged on the dehumidifier 2-3 -3, a fan is installed at the air inlet 1-3. The vacuum regeneration device includes a regenerator 7-3, the regenerator 7-3 is connected with the vacuum pump 9-3 through the water catcher 16, and the regenerator 7-3 is connected with a pressure gauge 5-3 and a pressure relief valve 6-3. A low-temperature heat source heater 8-3 is installed in the regenerator 7-3. The solution outlet of the dehumidifier 2-3 is connected to the dilute solution inlet of the regenerator 7-3 through a flow control valve 4-3, and a liquid storage tank 11-2 is arranged below the regenerator 7-3, so that The concentrated solution outlet of the regenerator 7-3 is connected to the concentrated solution inlet of the liquid storage tank 11-2 through a differential pressure control valve 10-2, and the concentrated solution outlet of the liquid storage tank 11-2 is connected through a solution pump 12- 3 is connected with the solution inlet of the dehumidifier 2-3. Two ends of the low-temperature heat source heater 8-3 are respectively connected to two ends of the condenser 18 in the high-temperature water chiller, and both sides of the solution pump are respectively connected with shut-off valves 13-3 and 14-3. The water catcher can use two ways to catch water, as shown in Figure 3, a cooling coil 15 is installed in the water catcher 16, and the cooling coil 15 is connected to the evaporator 21 through a dry fan coil 17 Realize catch water. Alternatively, as shown in FIG. 4 , the cooling coil 15 is connected to the cooling tower to catch water, and the two ends of the evaporator 21 are respectively connected to the two ends of the dry fan coil 17 .

The outdoor air is introduced into the dehumidifier by the fan for dehumidification and then sent into the room to deal with the indoor humidity load and new rheumatism load. The dilute solution after dehumidification enters the vacuum regeneration device by the pressure difference, and is evacuated by the vacuum pump, and the dilute solution is regenerated at a lower heat source temperature. The solution enters the liquid storage tank, and the dehumidification and regeneration processes can be run independently. When dehumidification is required, open the stop valves at both ends of the solution pump, start the solution pump, and let the stored concentrated solution enter the dehumidifier to conduct heat and mass transfer with the treated air to carry out the dehumidification process. The heat source required for the regeneration process is obtained by the condenser through the heat exchange between the intermediate solution and the refrigerant, and can also be provided by other low-grade heat sources. The high-temperature chiller produces high-temperature cold water and sends it to the dry fan coil unit to handle the indoor heat load. In order to reduce the load of the vacuum pump, a water catcher is installed in front of the vacuum pump, and the water can be caught by high-temperature cold water, or by the cooling water provided by the cooling tower.

Claims (3)

1. A vacuum regeneration solution air dehumidification system, characterized in that it comprises a dehumidifier and a vacuum regeneration device, the bottom of the dehumidifier is provided with a liquid storage tank, the dehumidifier is provided with an air inlet and an air outlet, and the inlet A fan is installed at the tuyere; the vacuum regeneration device includes a regenerator connected with a vacuum pump, a vent valve and a pressure gauge, and a low-temperature heat source heater is installed inside the regenerator; the solution outlet of the dehumidifier passes through The flow control valve is connected to the dilute solution inlet of the regenerator, the concentrated solution outlet of the regenerator is connected to the solution inlet of the dehumidifier through a solution pump, and stop valves are respectively connected to both sides of the solution pump. 2. A vacuum regeneration solution air dehumidification system, characterized in that it comprises a dehumidifier, a vacuum regeneration device and a liquid storage tank, the bottom of the dehumidifier is provided with a liquid storage tank, and the dehumidifier is provided with an air inlet and an air outlet , a fan is installed at the air inlet; the vacuum regenerator includes a regenerator, a vacuum pump, a vent valve and a pressure gauge are connected to the regenerator, and a low-temperature heat source heater is installed inside the regenerator; the dehumidifier The solution outlet of the regenerator is connected to the dilute solution inlet of the regenerator through a flow control valve, and a liquid storage tank is arranged below the regenerator, and the concentrated solution outlet of the regenerator is connected to the liquid storage tank through a differential pressure control valve. The concentrated solution inlet is connected, the concentrated solution outlet of the liquid storage tank is connected with the solution inlet of the dehumidifier through a solution pump, and stop valves are respectively connected on both sides of the solution pump. 3. A temperature and humidity independent regulation and control air-conditioning system adopting the vacuum regeneration solution air dehumidification system according to claim 2, characterized in that, it comprises a dehumidifier, a vacuum regeneration device, a liquid storage tank, a water catcher, a fan coil unit and A high-temperature chiller unit composed of a compressor, an evaporator, an expansion valve, and a condenser. A liquid storage tank is provided at the bottom of the dehumidifier, and an air inlet and an air outlet are arranged on the dehumidifier, and a fan is installed at the air inlet. The vacuum regeneration device includes a regenerator, the regenerator is connected to the vacuum pump through a water catcher, the regenerator is connected with a pressure gauge and a pressure relief valve, and a low-temperature heat source heater is installed in the regenerator; The solution outlet of the dehumidifier is connected to the dilute solution inlet of the regenerator through a flow control valve. The concentrated solution inlet of the tank is connected, and the concentrated solution outlet of the liquid storage tank is connected with the solution inlet of the dehumidifier through a solution pump; the two ends of the low-temperature heat source heater are connected with the two ends of the condenser in the high-temperature chiller connected, the two sides of the solution pump are respectively connected with shut-off valves; a cooling coil is installed in the water trap, and the cooling coil is connected to the evaporator through a dry fan coil to catch water; or the cooling coil It is connected with the cooling tower to realize water capture, and the two ends of the evaporator are respectively connected with the two ends of the dry fan coil.

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