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A kind of natural circulation separate control phase change heat system and separate control phase change heat method
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A technology of phase conversion heat and natural circulation, which is applied in the waste heat recovery and utilization of boiler flue gas and production process tail gas, and in the field of heat transfer enhancement, which can solve the problem of increasing system investment, operation and maintenance and management costs, many auxiliary equipment, and complex systems And other issues
Active Publication Date: 2017-08-04
SHANXI SANHESHENG IND TECH +1
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Problems solved by technology
However, the existing split-control phase change system is relatively deficient. The system is relatively complex, and there are many auxiliary equipment, which increases the system investment, operation and maintenance and management costs. It is not economical for some application fields with small heat transfer.
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Embodiment 1
[0130] Such as figure 1 As shown, a natural circulation split-controlled phase-change heat system, the heat exchange system includes a heat source evaporator liquid level sensor 1, a heat source evaporator 3, a heat source gas pressure sensor 5, a steam flow regulating valve 6, and a steam pipe 7 , cold fluid channel 8, cold source condenser 9, hot fluid channel 17, condensate return pipe 18, liquid return check valve 19, liquid flow regulating valve 20;
[0131] The heat source evaporator liquid level sensor 1 is set on the heat source evaporator 3, and the heat source gas pressure sensor 5 is set on the heat source evaporator 3 or before the steam flow regulating valve 6 along the air flow direction on the steam pipe 7;
[0132] The heat source evaporator 3 is arranged on the hot fluid passage 17; the cold source condenser 9 is arranged on the cold fluid passage 8; the bottom position of the cold source condenser 9 is higher than the bottom of the heat source evaporator 3; ...
Embodiment 2
[0204] A natural circulation split-controlled phase-change heat system, the heat exchange system includes a heat source evaporator liquid level sensor 1, a heat source evaporator 3, a heat source gas pressure sensor 5, a steam flow regulating valve 6, a steam pipe 7, a cold fluid Channel 8, cold source condenser 9, hot fluid channel 17, condensate return pipe 18, liquid return check valve 19, liquid flow regulating valve 20, cold source condenser pressure sensor 14, cold fluid control valve 15, hot fluid outlet Temperature sensor 16, vapor-liquid heat exchange device 10, liquid collector 11, return liquid level sensor 21, liquid discharge valve 22, replenishment valve 23, liquid accumulation sensor 24, emptying pipe and emptying valve 13;
[0205] The heat source evaporator liquid level sensor 1 is set on the heat source evaporator 3, and the heat source gas pressure sensor 5 is set on the heat source evaporator 3 or before the steam flow regulating valve 6 along the air flow d...
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Abstract
The invention discloses a natural circulation type sub-control phase change heat exchange system and a sub-control phase change heat exchange method. The heat exchange system comprises a heat source evaporator liquid level sensor, a heat source evaporator, a heat source steam pressure sensor, a steam flow regulation valve, a steam pipe, a cold fluid passage, a cold source condenser, a hot fluid passage, a condensation liquid return pipe, a return liquid check valve and a liquid flow regulation valve, wherein the heat source evaporator liquid level sensor is arranged on the heat source evaporator, the heat source steam pressure sensor is arranged on the heat source evaporator or arranged in front of the steam flow regulation valve arranged on the steam pipe in the steam flow direction, the heat source evaporator is arranged on the hot fluid passage, the cold source condenser is arranged on the cold fluid passage, and the bottom of the cold source condenser is higher than the bottom of the heat source evaporator. According to the heat exchange system, the natural circulation mode is adopted for realizing the sub-control phase change heat exchange technology, the system is simplified, and the benefit of waste heat recovery is improved.
Description
technical field [0001] The invention belongs to the technical field of safe and controllable enhanced heat transfer, and is particularly suitable for use in the fields of waste heat recovery and utilization of boiler flue gas and production process tail gas. Background technique [0002] Phase change heat has the characteristics of high heat transfer coefficient, large latent heat carried by the medium, unique correspondence between phase change saturation temperature and saturation pressure, uniform temperature distribution of phase change fluid, and easy control of phase change parameters, so it is widely used in enhanced heat transfer and Waste heat recovery and utilization system. [0003] The traditional phase change heat technology adopts the unified control of the phase change parameters of the cold and heat sources, and adjusts the phase change parameters of the cold source by adjusting the flow rate of the cold source fluid, and then changes the phase change paramet...
Claims
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Application Information
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