CN102345908A - Solution dehumidification regenerating unit - Google Patents

Abstract

The invention discloses a solution dehumidification and regeneration device, which is characterized in that the device comprises a casing (1), a solution inlet pipe (4) arranged on the inner upper part of the casing (1), a A heat and mass transfer unit body composed of filler (2) and internal cooling/internal heat pipe (3), a dehumidification regeneration solution outlet pipe (8) arranged at the bottom of the shell (1); a middle part of the shell (1) There is an inlet humid air (9) on one side, and an outlet humid air (10) on the other side; the inlet pipe (6) is connected to the input end of the inner cooling/heating pipe (3), and the outlet pipe (7) is connected to the inner cooling / the output end of the internal heat pipe (3); the solution inlet pipe (4) is provided with a liquid separator (5) at the part inside the casing (1). The invention has high efficiency and simple structure.

Description

Solution dehumidification regeneration device

technical field

The invention relates to a solution dehumidification/regeneration device, and belongs to the technical field of air conditioning, solution dehumidification/regeneration device manufacturing in solution dehumidification air conditioners, and heat and mass transfer enhancement.

Background technique

In recent years, global environmental problems have become increasingly prominent, and energy utilization crises have continued. The energy consumption brought by refrigeration and air-conditioning equipment has increased year by year, accounting for a major part of building energy consumption. Energy saving has become an urgent requirement in the new situation in the field of refrigeration and air conditioning, and the research and application of various energy-saving air conditioning systems has become a current hot spot.

Due to the superiority of the solution dehumidification air-conditioning system in removing latent heat load, it has gradually attracted widespread attention in recent years and has become a research hotspot in the field of refrigeration and air-conditioning. Solution dehumidification is a technology that uses the principle of physical absorption to treat the humidity of air. The dehumidification performance is measured by its surface vapor pressure. According to Raoult's law, as the solute concentration increases, the partial pressure of water vapor on the surface of the solution decreases gradually. The performance of the actual dehumidification solution deviates from Raoult's law, and is a negative deviation, so the actual dehumidification solution has a stronger moisture absorption capacity. The surface vapor pressure of a solution is a function of the solution temperature and concentration, and decreases as the solution temperature decreases and the solution concentration increases. The pressure difference between the water vapor partial pressure of the treated air and the surface vapor pressure of the dehumidification solution is the driving force for moisture to be transferred from the air to the dehumidification solution, so the lower the surface vapor pressure of the dehumidification solution, under the same treatment conditions, the solution The stronger the dehumidification capacity of the air conditioner, the lower the relative humidity of the moist air when it reaches equilibrium with the moist air it contacts. The solution dehumidification air-conditioning system can effectively use low-grade energy and heat recovery to complete the regeneration of the solution. In the solution dehumidification air-conditioning system, the energy exists in the form of chemical energy instead of thermal energy in the dehumidification solution, so its energy storage capacity is very large. Due to the corrosiveness of the solution, traditional heat exchanger metal materials such as aluminum and copper are easily corroded and damage the heat exchanger. In order to overcome this deficiency, the filler proposed by the present invention uses aluminum foam, which is a porous material with corrosion resistance, low density, high specific surface area and good thermal insulation performance. The heat and mass transfer unit is composed of foamed aluminum filler and inner cooling/internal heat pipe. This unit is a new type of inner cooling/internal heating solution dehumidification regeneration device with simple structure and easy processing.

Contents of the invention

Technical problem: The technical problem to be solved by the present invention is to provide a solution dehumidification regeneration device with high efficiency and simple structure.

Technical solution: In order to solve the above technical problems, the present invention proposes a solution dehumidification and regeneration device, which includes a housing, a solution inlet pipe arranged in the upper part of the housing, a filler and an internal cooling/heating pipe arranged in the middle of the housing The heat and mass transfer unit consists of a dehumidification regeneration solution outlet pipe arranged at the bottom of the shell; one side of the middle part of the shell is provided with an inlet humid air, and the other side is provided with an outlet humid air; the inlet pipe is connected to the internal cooling/ The input end of the internal heat pipe and the outlet pipe are connected to the output end of the internal cooling/internal heat pipe; the part of the solution inlet pipe in the shell is provided with a liquid separator.

Preferably, the filler is aluminum foam.

Preferably, air outlets are respectively provided on both sides or top and bottom of the casing.

Beneficial effects: the method of clamping the internal cooling/internal heat pipe inside the filler is adopted. Due to the characteristics of high specific surface area, porosity and good thermal conductivity of aluminum foam, the solution and air can maintain the required working temperature, and the solution and humid air The contact area increases and the mass transfer effect is enhanced.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the structure of the heat and mass exchange unit.

In the above figure, there are: shell 1, packing 2, inner cooling/heating pipe 3, solution inlet pipe 4, liquid separator 5, inlet pipe 6, outlet pipe 7, dehumidification regeneration solution outlet pipe 8, inlet wet Air 9, outlet wet air 10.

Detailed ways

The present invention will be described below with reference to the accompanying drawings.

Referring to Figures 1-2, the solution dehumidification and regeneration device provided by the present invention includes a housing 1, a solution inlet pipe 4 arranged in the upper part of the housing 1, a filler 2 and an internal cooling pipe arranged in the middle of the housing 1 The heat and mass transfer unit body composed of the inner heat pipe 3, the dehumidification regeneration solution outlet pipe 8 arranged at the bottom of the shell 1; the inlet humid air 9 is provided on one side of the middle part of the shell 1, and the outlet humid air is provided on the other side 10. The inlet pipe 6 is connected to the input end of the internal cooling/internal heat pipe (3), and the outlet pipe 7 is connected to the output end of the internal cooling/internal heat pipe 3; the part of the solution inlet pipe 4 in the housing 1 is provided with a liquid separator device 5.

The filler 2 is aluminum foam, which is a porous material with low density, high specific surface area and good thermal conductivity.

Air outlets are provided on both sides or up and down of the casing 1 respectively, so that the air and the solution can form a flow pattern of cross flow, forward flow or counter flow.

The invention is a solution dehumidification and regeneration device with the characteristics and advantages of filler and internal cooling/internal heat source. In the shell 1, there is a heat and mass transfer unit composed of porous aluminum foam filler 2 and internal cooling/internal heat pipe 3, so that the solution and air can exchange heat with the internal cooling/internal heating fluid through the porous aluminum with good thermal conductivity. The solution inlet pipe 4 is arranged above the shell 1, and the solution outlet pipe 8 is arranged below; the solution inlet pipe 4 is arranged above the heat and mass transfer unit body, and the solution flows into the liquid separator 5 through the liquid inlet pipe 4 and then sprays to the porous The aluminum foam filler 2 is in direct contact with the inlet humid air 9 entering from the side of the shell 1 for heat and mass exchange, so as to achieve the purpose of air dehumidification or solution regeneration. The solution after heat and mass exchange with the humid air is collected to the bottom of the casing 1 and flows out through the dehumidification regeneration solution outlet pipe 8 . The inner cooling/heating pipe 3 is embedded in the porous aluminum foam packing, which strengthens the heat and mass transfer process between the solution and the humid air, greatly improves the dehumidification/regeneration efficiency of the solution, and the processing technology is simple, low in cost, and easy to use. manufacturing.

The internal cooling/internal heat pipes 3 are connected in parallel or in series.

The internal cooling/internal heating solution dehumidification/regenerator has a reasonable structure, and the internal cooling/internal heating part is placed inside the heat and mass transfer part, and the two become a complete device. When used as a dehumidifier, the external cold source fluid is passed into the internal cooling/internal heat pipe, which can effectively reduce the temperature of the solution and increase the driving potential of dehumidification to achieve the purpose of enhancing mass transfer. When used as a regenerator, the external heat source fluid is passed through the internal cooling/internal heat pipe to increase the temperature of the solution, and the mass transfer direction is just opposite to that of the dehumidifier. The heat source fluid fed into the internal cooling/internal heating pipeline can use industrial waste heat, such as waste water and steam, and feed cold fluid such as normal temperature water.

A heat and mass transfer unit composed of foamed aluminum filler 2 and internal cooling/internal heat pipe 3 is installed in the shell 1. A solution inlet pipe 4 is arranged above the shell 1 for the introduction of the dehumidification solution. The internal cooling/internal heat source inlet main pipe 6 is used for the inlet of the cold/heat source fluid, and the outlet pipe 7 is arranged below; the solution inlet pipe 4 is arranged above the heat and mass transfer unit body, and the liquid separator 5 is arranged on the solution inlet On the pipe 4, the solution is evenly sprayed onto the aluminum foam filler 2 through a nozzle or other liquid distributor, and a dehumidification/regeneration solution outlet pipe 8 is provided at the bottom of the shell 1.

The inner cooling/internal heat pipe 3 is clamped inside the foamed aluminum filler 2, and the two are in close contact. The filler 2 is aluminum foam, which is a porous material with corrosion resistance, low density and high specific surface area, which greatly increases the contact area between the solution and the moist air. Air outlets are respectively arranged on both sides or top and bottom of the casing 1 . The internal cooling/internal heat pipes 3 are connected in parallel or in series. The internal cooling/internal heat source in the internal cooling/internal heat pipe 3 cools or heats the solution to enhance heat and mass transfer. The internal cooling/internal heat source fluid enters the internal cooling/internal heat pipe 3 through the inlet pipe 6, and finally flows out from the outlet pipe 7. Humid air inflow and outflow ports are provided on both sides of the housing (cross-flow design) or up and down (forward/counter-flow design), and a solution dehumidification regeneration solution outlet pipe 8 is provided under the housing for solution export. The internal cooling/internal heat pipes in the shell are connected by pipes to maintain the circulation of the fluid. The air flows in from the left side and flows out from the right side of the shell after being dehumidified. The shell, pipe, and filler form a complete dehumidifier/regenerator through reasonable combination. The dehumidification solution flows in through the solution input pipe and sprays onto the packing to contact with the air, and the heat and mass transfer process is performed to achieve the purpose of air dehumidification or solution regeneration. The setting of the internal cooling/internal heat pipe plays a role in the heat and mass transfer process. The strengthening effect greatly improves the dehumidification and regeneration efficiency of the solution.

The above descriptions are only preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, but all equivalent modifications or changes made by those of ordinary skill in the art according to the disclosure of the present invention should be included within the scope of protection described in the claims.

Claims (3)

1. solution dehumidifying and regenerating device is characterized in that: this device comprises housing (1), be arranged on the solution influent stream pipe (4) of housing (1) internal upper part, be arranged on middle part in the housing (1) by filler (2) with in cold/heat and mass cell cube that interior heat pipe (3) is formed, be arranged on the dehumidifying actified solution delivery line (8) bottom the housing (1); Side at housing (1) middle part is provided with inlet humid air (9), and opposite side is provided with outlet humid air (10); The input of cold in influent stream pipe (6) connects/interior heat pipe (3), the output of cold in outflow tube (7) connects/interior heat pipe (3); The part of solution influent stream pipe (4) in housing (1) is provided with knockout (5).

2. solution dehumidifying and regenerating device according to claim 1 is characterized in that: described filler (2) adopts foamed aluminium.

3. solution dehumidifying and regenerating device according to claim 1 and 2 is characterized in that: the air port perhaps is set respectively up and down in housing (1) both sides.

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