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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 ordinary air-conditioning system as the condenser cooling refrigerant in the ice-making process of the equipment.

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

Embodiment 1

[0041] like image 3 As shown, the refrigeration 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 sent by gas-liquid separator Ⅱ9 into a compressed gas with a temperature of 40°C and a pressure of 1.5MPa, and then condenses it into a gas with a temperature of At 30°C and a pressure of 1.5 MPa, the liquid flows into the liquid reservoir 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, and the refrigerant is throttled by the throttle valve Ⅰ6 to become a refrigerant with a temperature of 5°C and a pressure of 0.5MPa, and flows into the evaporator 7 to absorb heat and refrigerate to a temperature of 10°C, gas with a pressure of 0.7MPa, the evaporator 7 is immersed in the heat exchanger 10 filled with refrigeran...

Embodiment 2

[0048] like Figure 4 As shown, the separate production of cold water for the single compressor two-stage dynamic parallel refrigeration cold storage air conditioner is as follows:

[0049] A. Compression and condensation: Compressor 1 compresses the refrigerant sent by gas-liquid separator Ⅱ9 into a compressed gas with a temperature of 45°C and a pressure of 1.8 MPa, and then condenses it into a gas with a temperature of At 35°C and a pressure of 1.8 MPa, the liquid flows into the liquid receiver 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 refrigerant through the throttle valve Ⅰ6 into a refrigerant with a temperature of 7°C and a pressure of 0.6MPa, and flow into the evaporator 7 to absorb heat and cool down to a temperature of 12°C , gas with a pressure of 0.8 MPa, the evaporator 7...

Embodiment 3

[0055] like Figure 4 As shown, the separate ice production of the two-stage dynamic parallel refrigeration storage air conditioner with a single compressor is as follows:

[0056] A. Compression and condensation: Compressor 1 compresses the refrigerant sent by gas-liquid separator Ⅱ9 into a compressed gas with a temperature of 35°C and a pressure of 1.2MPa, and then condenses it into a gas with a temperature of At 25°C and a pressure of 1.2MPa, the liquid flows into the liquid receiver 4, and controls the flow direction and flow velocity of the refrigerant in all directions through 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 that cold water is not produced;

[0058] C. Secondary ice making: control the three-way solenoid valve I5 to throttle all the refrigerant after compression and condensation to 0-1°C refrigerant through the throttle valve III21, and flow into the co...

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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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