Single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and refrigeration method thereof

A single-compressor and air-conditioning system technology, which is applied to compressors, irreversible cycle compressors, refrigerators, etc., can solve the problems that equipment cannot operate independently, achieve low equipment investment and operation costs, stable cooling, and avoid The effect of corrosion

Active Publication Date: 2015-12-09
YUNNAN ZHIGU NEW ENERGY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment cannot operate independently, and must be attached to the cold produced by the ordin

Method used

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  • Single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and refrigeration method thereof
  • Single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and refrigeration method thereof
  • Single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and refrigeration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] like image 3 As shown, the cooling method of the single-compressor two-stage dynamic series refrigeration cold storage air conditioner is as follows:

[0042] A. Compression and condensation: Compressor 1 compresses the refrigerant fed from the gas-liquid separator II9 into a compressed gas with a temperature of 40°C and a pressure of 1.5MPa. After passing through the gas-liquid separator I2 and condenser 3, it is condensed to a temperature of The liquid at 30°C and pressure of 1.5MPa flows into the accumulator 4 and is controlled and stored by the solenoid valve I5;

[0043] B. Primary refrigeration: adjust the opening size of the solenoid valve I5 according to the cooling demand. The refrigerant is throttled through the throttle valve I6 to be a refrigerant with a temperature of 5°C and a pressure of 0.5MPa, and flows into the evaporator 7 to absorb heat and cool to a temperature of 10℃, the gas pressure is 0.7MPa, the evaporator 7 is immersed in...

Example Embodiment

[0047] Example 2

[0048] like Figure 4 As shown, the single-compressor two-stage dynamic parallel refrigeration and cold storage air conditioner separately produces cold water as follows:

[0049] A. Compression and condensation: Compressor 1 compresses the refrigerant fed from the gas-liquid separator II9 into a compressed gas with a temperature of 45°C and a pressure of 1.8MPa. After passing through the gas-liquid separator I2 and condenser 3, it is condensed to a temperature of The liquid at 35°C and the pressure of 1.8MPa flows into the accumulator 4, and the flow direction of the refrigerant and the flow rate of the flow in each direction are controlled by the three-way solenoid valve I5;

[0050] B. Primary refrigeration: control the three-way solenoid valve I5 to throttle all the refrigerants through the throttle valve I6 to a refrigerant with a temperature of 7 °C and a pressure of 0.6 MPa, and flow into the evaporator 7 to absorb heat and cool to a temperature of 1...

Example Embodiment

[0054] Example 3

[0055] like Figure 4 As shown, the individual ice making of the single-compressor two-stage dynamic parallel refrigeration and cold storage air conditioner is as follows:

[0056] A. Compression and condensation: Compressor 1 compresses the refrigerant fed from the gas-liquid separator II9 into a compressed gas with a temperature of 35°C and a pressure of 1.2MPa, which is condensed into a compressed gas with a temperature of 1.2MPa after passing through the gas-liquid separator I2 and condenser 3 The liquid at 25°C and the pressure of 1.2MPa flows into the accumulator 4, and the flow direction of the refrigerant and the flow rate of the flow in each direction are controlled by the three-way solenoid valve I5;

[0057] B. Primary refrigeration: do not open the opening of the three-way solenoid valve I5 to the evaporator 7, so as not to produce cold water;

[0058] C. Two-stage ice-making: control the three-way solenoid valve I5 to throttle all the compress...

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Abstract

The invention discloses a single-compressor secondary dynamic refrigeration cold-storage air-conditioning system and a refrigeration method thereof. An exhaust pipe of a compressor of the refrigeration cold-storage air-conditioning system is communicated with a solenoid valve I sequentially through a gas-liquid separator I, a condenser and a liquid accumulator. The single-compressor secondary dynamic refrigeration cold-storage air-conditioning system further comprises a primary refrigeration device, a secondary refrigeration device, a cold exchange and cold supply air-conditioning device. An evaporator of the primary refrigeration device is immersed in a heat exchanger, an outlet of the solenoid valve I is in series connection or parallel connection with the evaporator and a cold-storage barrel and then is communicated with an inlet of a gas-liquid separator II, an outlet of the heat exchanger is communicated with an inlet on the upper portion of the cold-storage barrel sequentially through a water pump I and a solenoid valve II, an outlet on the lower portion of the cold-storage barrel is communicated with an inlet of the heat exchanger, and a liquid outlet and a liquid inlet of the cold-storage barrel are communicated with an inlet and an outlet of the cold exchange and cold supply air-conditioning device. The refrigeration method comprises the steps of compression condensation, primary refrigeration, secondary ice making and cold exchange and cold supply air-conditioning. The single-compressor secondary dynamic refrigeration cold-storage air-conditioning system has the advantages of being high in refrigeration efficiency, low in device primary investment and running cost and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a single-compressor two-stage dynamic refrigeration cold-storage air-conditioning system and a refrigeration method thereof with high refrigeration efficiency, low equipment investment and operation costs, and high reliability. Background technique [0002] With the development of modern industry and the improvement of people's living standards, modern air-conditioning equipment has become an urgent need for people's production and life. The application of central air-conditioning is becoming more and more extensive, and its power consumption is also increasing. The power consumption of air-conditioning has accounted for more than 20% of its peak power consumption, and the proportion of air-conditioning energy consumption in the total energy consumption of the national economy is as high as 30%. The peak-to-valley load difference of the power system increases, t...

Claims

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Application Information

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IPC IPC(8): F25B1/00F25B41/04F25B49/02F25C1/00F25B41/20
Inventor 傅定文何建国李林强宋振宇李伟冯凌燕
Owner YUNNAN ZHIGU NEW ENERGY TECH DEV CO LTD
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