Low-grade-energy drive CO2 absorption refrigeration system

Abstract

The invention discloses a low-grade-energy drive CO2 absorption refrigeration system, in particular to a refrigeration system taking low grade energy as a drive heat source, and belongs to the refrigeration field. The low-grade-energy drive CO2 absorption refrigeration system is jointly driven by high-temperature low-grade heat and low-temperature low-grade heat and comprises a high temperature generator, a low temperature generation module, a condensation module, an evaporator, an absorption evaporation module, an absorption module, an energy recovery heat exchanger, a first heat regenerator, a second heat regenerator, a solution pump and a pressure reduction device. The utility model has the advantages that the refrigeration efficiency of the low-grade-energy drive CO2 absorption refrigeration system is improved, peripheral equipment of the low-grade-energy drive CO2 absorption refrigeration system is simplified, the stability reliability of the low-grade-energy drive CO2 absorption refrigeration system is improved, the unstable and discontinuous low-grade energy is efficiently used, and a foundation is laid for the efficient utilization of the low-grade-energy in the refrigeration field of air conditioners.

Description

Technical field:

[0001] The invention relates to a low-grade energy-driven CO 2 An absorption refrigeration system, specifically a refrigeration system using low-grade energy as a driving heat source, belongs to the field of refrigeration. Background technique:

[0002] With the rapid development of social economy and the continuous improvement of the quality of life of the public, refrigeration and air conditioning equipment is becoming one of the necessities of today's urban family life and industrial production. Most of the refrigerants in air-conditioning equipment use traditional refrigerants such as freon, and the defects in environmental problems are becoming more and more prominent. In addition, the electricity used to maintain the daily operation of air-conditioning and refrigeration systems is 15% of the world's total, so the energy and environment caused by air-conditioning and refrigeration are serious The problem is threatening the sustainable development of th...

Examples

Embodiment 1

[0027] figure 1 It is embodiment 1 of the present invention, that is, CO driven by low-grade dual heat sources 2 Schematic diagram of the basic structure of an absorption refrigeration system. Such as figure 1 As shown, it includes a high-temperature generator 1, a low-temperature generating module 2, a condensation module 3, an evaporator 4, an absorption evaporation module 5, an absorption module 6, a first regenerator 7, a second regenerator 8, and a second solution pump 9 , the first solution pump 10, the decompression device 14, the refrigerant outlet of the high-temperature generator 1, the outlet of the refrigerant of the low-temperature generation module 2 are respectively connected with the inlet of the condensation module 3, and the first outlet 1 of the refrigerant of the condensation module 3 is refrigerated with the evaporator 4 The refrigerant inlet is connected, the refrigerant outlet of the evaporator 4 is connected to the refrigerant inlet of the absorption ...

Embodiment 2

[0042] figure 2 It is Example 2 of the present invention. In order to solve the shortage of high-temperature heat source supply, CO 2 The problem of insufficient gas generation, this embodiment will come from the CO with higher outlet temperature of the low-temperature generation module 2 2 One of the refrigerant gas is used as a supplementary steam source for the cycle, and the other one enters the absorption module 6 together with the higher temperature refrigerant gas from the absorption evaporation module 5 to be absorbed, so as to ensure the stable operation of the system, reduce the cycle rate, and improve the system efficiency. COP.

[0043] Such as figure 2 As shown, it includes a high-temperature generator 1, a low-temperature generating module 2, a condensation module 3, an evaporator 4, an absorption evaporation module 5, an absorption module 6, a first regenerator 7, a second regenerator 8, and a second solution pump 9 , the first solution pump 10, the refrig...

Embodiment 3

[0050] image 3 It is Example 3 of the present invention. In order to effectively reduce the refrigerant CO leaving the condensing module 3 2 Therefore, the energy recovery heat exchanger 25 is added at the second outlet II of the refrigerant of the condensing module 3, the outlet of the brine, and the inlet of the cooling medium to recover the cooling capacity of the brine and the cooling medium, so as to more effectively reduce the cycle rate and The temperature of the solution at the outlet of the absorber further increases the COP of the system.

[0051] Such as image 3 As shown, it includes a high-temperature generator 1, a low-temperature generating module 2, a condensation module 3, an evaporator 4, an absorption evaporation module 5, an absorption module 6, a first regenerator 7, a second regenerator 8, and a second solution pump 9 , the first solution pump 10, the energy recovery heat exchanger 25, the refrigerant outlet of the high-temperature generator 1, and th...

Technical field:

[0001] The invention relates to a low-grade energy-driven CO 2 An absorption refrigeration system, specifically a refrigeration system using low-grade energy as a driving heat source, belongs to the field of refrigeration. Background technique:

[0002] With the rapid development of social economy and the continuous improvement of the quality of life of the public, refrigeration and air conditioning equipment is becoming one of the necessities of today's urban family life and industrial production. Most of the refrigerants in air-conditioning equipment use traditional refrigerants such as freon, and the defects in environmental problems are becoming more and more prominent. In addition, the electricity used to maintain the daily operation of air-conditioning and refrigeration systems is 15% of the world's total, so the energy and environment caused by air-conditioning and refrigeration are serious The problem is threatening the sustainable development of th...

Examples

Embodiment 1

[0027] figure 1 It is embodiment 1 of the present invention, that is, CO driven by low-grade dual heat sources 2 Schematic diagram of the basic structure of an absorption refrigeration system. Such as figure 1 As shown, it includes a high-temperature generator 1, a low-temperature generating module 2, a condensation module 3, an evaporator 4, an absorption evaporation module 5, an absorption module 6, a first regenerator 7, a second regenerator 8, and a second solution pump 9 , the first solution pump 10, the decompression device 14, the refrigerant outlet of the high-temperature generator 1, the outlet of the refrigerant of the low-temperature generation module 2 are respectively connected with the inlet of the condensation module 3, and the first outlet 1 of the refrigerant of the condensation module 3 is refrigerated with the evaporator 4 The refrigerant inlet is connected, the refrigerant outlet of the evaporator 4 is connected to the refrigerant inlet of the absorption ...

Embodiment 2

[0042] figure 2 It is Example 2 of the present invention. In order to solve the shortage of high-temperature heat source supply, CO 2 The problem of insufficient gas generation, this embodiment will come from the CO with higher outlet temperature of the low-temperature generation module 2 2 One of the refrigerant gas is used as a supplementary steam source for the cycle, and the other one enters the absorption module 6 together with the higher temperature refrigerant gas from the absorption evaporation module 5 to be absorbed, so as to ensure the stable operation of the system, reduce the cycle rate, and improve the system efficiency. COP.

[0043] Such as figure 2 As shown, it includes a high-temperature generator 1, a low-temperature generating module 2, a condensation module 3, an evaporator 4, an absorption evaporation module 5, an absorption module 6, a first regenerator 7, a second regenerator 8, and a second solution pump 9 , the first solution pump 10, the refrig...

Embodiment 3

[0050] image 3 It is Example 3 of the present invention. In order to effectively reduce the refrigerant CO leaving the condensing module 3 2 Therefore, the energy recovery heat exchanger 25 is added at the second outlet II of the refrigerant of the condensing module 3, the outlet of the brine, and the inlet of the cooling medium to recover the cooling capacity of the brine and the cooling medium, so as to more effectively reduce the cycle rate and The temperature of the solution at the outlet of the absorber further increases the COP of the system.

[0051] Such as image 3 As shown, it includes a high-temperature generator 1, a low-temperature generating module 2, a condensation module 3, an evaporator 4, an absorption evaporation module 5, an absorption module 6, a first regenerator 7, a second regenerator 8, and a second solution pump 9 , the first solution pump 10, the energy recovery heat exchanger 25, the refrigerant outlet of the high-temperature generator 1, and th...

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