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Integrated circulating water cooling system and method

A technology of circulating water cooling and cooling system, which is used in water shower coolers, direct contact heat exchangers, lighting and heating equipment, etc., can solve the problem of no heat pump and cooling tower coupled into a device, equipment size and footprint Large, must work 24 hours and other problems, to achieve the effect of water saving and energy saving, less floor space, less ineffective evaporation loss

Active Publication Date: 2019-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its shortcomings are also obvious. On the one hand, its heat pump system and cooling tower are still two independent devices, which are not coupled in one device. The two are connected through pipelines and heat exchangers, and multi-stage heat exchange is adopted. The structure is complex and the heat loss is serious; on the other hand, the heat pump must work 24 hours a day to achieve both cooling and defogging effects. Compared with traditional cooling towers, its energy consumption is very high
[0006] CN201510419893.8 discloses a circulating water air cooling system and method, and proposes the idea of ​​primary cooling of cooling tower and secondary cooling of heat pump, but the heat pump system and cooling tower are still two independent devices, and they are installed in the cooling tower When the heat pump is turned on when the processing load is saturated, the heat of the circulating water that needs to be cooled is transferred to another cooling water, and then sent to the cooling tower for cooling and cooling, which means that the heat that needs to be processed is returned in another way. In a cooling tower, this is obviously unreasonable
[0007] The above inventions have recognized the advantages of heat pump technology in strengthening refrigeration, but there are deficiencies when combined with cooling towers. The heat pump and cooling tower are not truly coupled into one device. In addition, the existing cooling towers are based on the local annual Designed for the highest wet bulb temperature, the disadvantages of relatively large equipment size and floor space have not been improved

Method used

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  • Integrated circulating water cooling system and method
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Experimental program
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Effect test

Embodiment 1

[0048] The schematic diagram of the circulating water cooling system is as follows: figure 1 As shown, including open tower cooling system and heat pump system;

[0049] The open tower cooling system includes a fan 110, a sprinkler 120, a heat exchange layer 130, a sump 140, and an evaporation chamber 150 arranged in sequence from top to bottom, and the evaporation chamber 150 is located on the bottom side of the sump 140, The opening or closing of the control door 160 forms a semi-closed or closed chamber; the shower 120 communicates with the circulating water inlet through the valve A401, and the sump 140 communicates with the circulating water outlet through the valve D404; In the direction near the water inlet end, a branch flow is drawn out, which communicates with the evaporation chamber 150 through the valve B402, and the bottom of the evaporation chamber 150 is connected with the circulating water outlet through the valve C403;

[0050] The heat pump system includes a...

Embodiment 2

[0055] The schematic diagram of the circulating water cooling system is as follows: figure 2 As shown, including open tower cooling system, heat pump system and diversion system;

[0056] The open tower cooling system includes a fan 110, a sprinkler 120, a heat exchange layer 130, a sump 140, and an evaporation chamber 150 arranged in sequence from top to bottom, and the evaporation chamber 150 is located on the bottom side of the sump 140, The opening or closing of the control door 160 forms a semi-closed or closed chamber; the shower 120 communicates with the circulating water inlet through the valve A401, and the sump 140 communicates with the circulating water outlet through the valve D404; In the direction near the water inlet end, a branch flow is drawn out, which communicates with the evaporation chamber 150 through the valve B402, and the bottom of the evaporation chamber 150 is connected with the circulating water outlet through the valve C403;

[0057] The heat pum...

Embodiment 3

[0064] Select a day in September in this area, the highest temperature of the day is 29°C, and the relative humidity is 45%. The converted maximum wet bulb temperature is 20.26°C, the minimum temperature is 18°C, and the relative humidity is 55%. The converted minimum wet bulb temperature is 12.8°C, which is lower than the design optimum wet bulb temperature of 22°C, no heat is taken.

[0065]The working mode of the cooling system in a day is: open the open tower cooling system, close the heat pump system, open the valve A401 and valve C403 to the maximum, close the valve B402 and valve D404, open the control door 160, and close the heat extractor 250; morning is one day In the coldest stage of the day, the fan 110 works at a lower speed at this time, and gradually increases the power as the temperature increases; the stage from noon to the afternoon is the hottest day, and the fan 110 works at a higher speed to meet the needs of the day. The circulating water outlet index is ...

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Abstract

The invention discloses an integrated circulating water cooling system and method. The integrated circulating water cooling system comprises an open type tower cooling system and a heat pump system; the open type tower cooling system comprises a fan, a sprayer, a heat exchange layer, a water collecting pool and an evaporation chamber; and the heat pump system comprises an evaporator, a compressor,a condenser and an expansion valve which are connected through pipelines in sequence; the expansion valve and the evaporator are connected to form a loop; the evaporator is arranged in the evaporation chamber; and the pipeline connected with the compressor and the condenser is externally provided with a heat extraction device in a parallel flow mode. Through the integrated circulating water cooling system, multiple cooling modes can be achieved aiming as environment temperature change and different water or electricity saving requirements. A traditional open type tower cooling system is in coupling with the heat pump system, the energy saving effect of the whole system is improved, the size of existing open type tower equipment is decreased to a great extent, and the occupied area is decreased.

Description

technical field [0001] The invention relates to an integrated circulating water cooling system coupled with a heat pump, which belongs to the technical field of industrial circulating water. Background technique [0002] Most of the circulating water systems of large enterprises use open cooling towers, and their heat transfer performance is greatly affected by natural climate conditions. In the hottest time of summer, the open cooling tower is limited by the process itself and cannot provide enough cooling capacity to meet the needs of the working conditions; on the other hand, in most of the time, such as spring, autumn, winter, or during the day In the morning and evening, the temperature is relatively low. At this time, the open cooling tower does not need to operate at full load, which indirectly makes part of the heat exchange layer and the water collection tank redundant, which in a sense causes equipment size and Waste of floor space, and floor space is an important...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28C1/02F28F25/02
CPCF28C1/02F28F25/02
Inventor 马和旭程梦婷郭宏山李宝忠王雪清张蕾
Owner CHINA PETROLEUM & CHEM CORP