Absorption type refrigeration device based on adjustable solar heat source

Abstract

The invention discloses an absorption refrigeration device based on an adjustable solar heat source, which comprises a generator and a solar heat collector, a water inlet and a water outlet of the solar heat collector are connected through a circulating water pipeline, and the circulating water pipeline flows through the generator. According to the absorption type refrigeration device, water heated by solar energy serves as a heat source, and refrigeration energy consumption can be saved.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigeration, and in particular relates to an absorption refrigeration device based on an adjustable solar heat source. Background Art

[0002] In the field of ore smelting plants, a large amount of refrigeration is required. Refrigeration equipment mainly includes compression refrigeration equipment and absorption refrigeration equipment. Absorption refrigeration equipment is driven by thermal energy and adopts binary or multi-element working fluid pairs. It realizes refrigeration and heating by evaporation and condensation of low-boiling point components (refrigerants), and completes the whole cycle by absorption and desorption of high-boiling point components (absorbents). The absorption working fluid of lithium bromide absorption refrigeration equipment is lithium bromide solution, and the refrigerant working fluid is water. It has developed rapidly due to its advantages such as quiet operation, wide range of cooling capacity adjustment, and no damage to the ozone layer.

[0003] At present, the generators of lithium bromide absorption refrigeration equipment are all heated by high-temperature flue gas generated by gas combustion (lithium bromide solution is heated in the generator), which is not conducive to energy saving. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an absorption refrigeration device based on an adjustable solar heat source so as to save refrigeration energy consumption.

[0005] The present invention solves the above problems by the following technical means:

[0006] The invention provides an absorption refrigeration device based on an adjustable solar heat source, comprising a generator and a solar collector, wherein a water inlet and a water outlet of the solar collector are connected via a circulating water pipeline, and the circulating water pipeline flows through the generator.

[0007] Furthermore, it also includes a phase change heat storage device and a controller. The water inlet of the phase change heat storage device, the water outlet of the solar thermal collector and the circulating water pipeline are connected through a three-way valve. The water outlet of the phase change heat storage device is connected to the circulating water pipeline through a pipe. The water outlet of the solar thermal collector is provided with a temperature detector. The three-way valve and the temperature detector are electrically connected to the controller respectively.

[0008] Furthermore, the three-way valve is a solenoid valve.

[0009] Furthermore, a water pump is provided on the circulating water pipeline.

[0010] Furthermore, the circulating water pipeline is bent and flows through the generator.

[0011] Furthermore, an ultrasonic transducer is arranged at the bottom of the generator.

[0012] Beneficial effects of the present invention:

[0013] The absorption refrigeration device of the present application, whose movable axis is based on an adjustable solar heat source, comprises a generator and a solar heat collector, wherein the water inlet and the water outlet of the solar heat collector are connected via a circulating water pipeline, and the circulating water pipeline flows through the generator. The absorption refrigeration device of the present application uses water heated by solar energy as a heat source, which is conducive to saving refrigeration energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present invention will become clearer and more specific. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0017] like Figure 1 As shown, this embodiment discloses an absorption refrigeration device based on an adjustable solar heat source, including a generator 6 and a solar collector 2, wherein the water inlet and the water outlet of the solar collector are connected via a circulating water pipeline 4, the circulating water pipeline flows through the generator, and a water pump 3 is arranged on the circulating water pipeline. In this embodiment, the circulating water pipeline is bent and flows through the generator.

[0018] During operation, solar energy heats the water in the circulating water pipeline, and then the lithium bromide solution in the generator is heated by the water. In this way, the absorption refrigeration device of the present application uses the water heated by solar energy as a heat source, which is beneficial to saving refrigeration energy consumption.

[0019] As a further improvement to the above technical solution, it also includes a phase change heat storage 1 and a controller 7. The water inlet of the phase change heat storage, the water outlet of the solar collector and the circulating water pipeline are connected through a three-way valve 9. The water outlet of the phase change heat storage is connected to the circulating water pipeline through a pipeline. The water outlet of the solar collector is provided with a temperature detector 8. The three-way valve and the temperature detector are electrically connected to the controller respectively. The three-way valve is a solenoid valve. When the temperature detector detects that the outlet water temperature of the solar collector is too high, that is, when the water temperature flowing into the generator is too high, the flow rate flowing into the phase change heat storage is increased through the three-way valve, and the phase change heat storage is used to cool down this part of the water. After that, this part of the water is mixed with the high-temperature hot water that flows out directly and is sent to the generator; after the overall heat release and cooling, it returns to the solar collector to absorb heat and heat up, completing the cycle. In this way, the controller adjusts the flow rate of each heat source hot water branch in real time by controlling the three-way valve, avoiding the fluctuation of the heat source with time, weather and other factors. By rationally designing and optimizing the calculation to determine the auxiliary equipment, the maximum cooling capacity with the minimum area and the highest solar cooling efficiency can be achieved, which has energy-saving benefits.

[0020] As a further improvement to the above technical solution, an ultrasonic transducer 5 is provided at the bottom of the generator. The ultrasonic wave acts on the gas-liquid interface, and the liquid surface is raised through the ultrasonic directional pressure. The ultrasonic wave produces cavitation and micro-perturbation effects on the raised liquid surface, thereby causing the gas-liquid interface to produce an atomization effect. These effects greatly reduce the viscosity of the solution at the gas-liquid interface and reduce the liquid film thickness of the mass transfer layer, thereby accelerating the separation and mass transfer process of the refrigerant water in the lithium bromide solution. In this way, an ultrasonic transducer of a certain power is placed at the bottom of the generator device, a suitable sound wave frequency is set, and the distance from the liquid surface is adjusted. The mass transfer process is strengthened at a given heat source temperature, the cooling capacity of the absorption refrigeration system is increased, the system startup time is shortened, and the system response speed is improved.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An absorption refrigeration device based on an adjustable solar heat source, characterized in that: The invention comprises a generator and a solar heat collector. The water inlet and the water outlet of the solar heat collector are connected via a circulating water pipeline, and the circulating water pipeline flows through the generator.

2. The absorption refrigeration device based on an adjustable solar heat source according to claim 1, characterized in that: It also includes a phase change heat storage device and a controller. The water inlet of the phase change heat storage device, the water outlet of the solar thermal collector and the circulating water pipeline are connected via a three-way valve. The water outlet of the phase change heat storage device is connected to the circulating water pipeline via a pipeline. The water outlet of the solar thermal collector is provided with a temperature detector. The three-way valve and the temperature detector are electrically connected to the controller respectively.

3. The absorption refrigeration device based on an adjustable solar heat source according to claim 2, characterized in that: The three-way valve is a solenoid valve.

4. The absorption refrigeration device based on an adjustable solar heat source according to claim 3, characterized in that: A water pump is arranged on the circulating water pipeline.

5. The absorption refrigeration device based on an adjustable solar heat source according to claim 4, characterized in that: The circulating water pipeline is bent and flows through the generator.

6. The absorption refrigeration device based on an adjustable solar heat source according to any one of claims 1 to 5, characterized in that: An ultrasonic transducer is arranged at the bottom of the generator.

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