Adaptive controlled mine return air waste heat recovery heating system

Abstract

The invention discloses an adaptive controlled mine return air waste heat recovery heating system. The adaptive controlled mine return air waste heat recovery heating system comprises a mine return air spraying heat transfer system, a low-grade heat energy lift system, a load side heating system and an adaptive control system. The apparent heat and latent heat in the mine return air are recoveredby the mine return air spraying heat transfer system, are promoted to higher grade heat through the low-grade heat energy lift system and are provided to the load side heating system for use. The adaptive control system monitors, controls, feeds back and regulates the mine return air spraying heat exchange system, the low-grade heat energy lift system and the load side heating system. The adaptivecontrolled mine return air waste heat recovery heating system improves the accuracy and target of the system operation, has obvious effects of energy saving and water saving and solves the problem oflow adaptability of the external environment state and the time change of thermal load and the heat and humidity exchange efficiency, and the adaptive controlled mine return air waste heat recovery heating system applies parameterized adjustment and a frequency converter and other control methods to realize efficient regulation of a mine return air spraying heat exchanger under variable working conditions.

Description

technical field [0001] The invention relates to the field of spray heat and moisture exchange, in particular to an adaptively controlled mine return air waste heat recovery heating system. Background technique [0002] The temperature and humidity of the mine return air remain constant all year round, the temperature range is about 15°C to 30°C, the relative humidity is greater than 90%, and the flow rate of the mine return air is about 50m 3 / s~500m 3 / s, is a low-temperature waste heat resource, which is currently used as a device or system for recovering waste heat from mine return air. Heat exchangers or spray towers are mostly used to recover waste heat resources in mine return air. The spray type is the mine return air and The heat and moisture exchange method of direct countercurrent contact of the circulating spray water, the temperature of the circulating spray water in summer is about 32 ℃ ~ 37 ℃, after the heat and moisture exchange between the mine return air an...

AI Technical Summary

Problems solved by technology

[0003] Currently used in mine return air spray heat exchange devices, the spray parameters are often set according to experience, and there is a lack of system control methods. Since the temperature and relative humidity of mine return air are the main factors affecting the efficiency of heat and moisture exchange, empirical adjustment methods are not easy to obtain. High heat and humidity exchange efficiency, difficult to match with user side load, low adaptability to atmospheric environment parameters, and waste of energy consumption of mechanical equipment. In addition, the mine return air has a large air volume and air shaft resistance. Reasonably adjust the mine return air volume and The ratio of circulating spray water volume becomes an important factor affecting the efficiency of mine return air waste heat recovery heating system

[0004] A waste energy recovery and utilization system for mine return air (publication number: CN202442550U), a mine return air waste heat recovery and utilization system (publication number: CN205980886U), mine exhaust air waste heat utilization device (publication number: CN202281419U), mine return air Energy utilization method and device (publication number: CN101696833A), method and device for mine return air heat recovery and utilization (publication number: CN1916368A) realize energy transfer through heat exchangers, but heat exchangers can only recover sensible heat in waste heat, The latent heat in the waste heat resources still cannot be recovered, and the single sensible heat recovery efficiency is lower than the total heat exchange efficiency; mine return air waste heat recovery and utilization device (publication number: CN204373452U), mine heat and wet source energy collection and utilization system (publication number: CN103398510A ), a water source heat pump based on mine return air heat energy (publication number: CN205174927U), a mine ventilation cooling and waste heat utilization system (publication number: CN104213931A), mine return air heat energy extraction device (publication number: CN201133774Y), a A waste energy recycling system for mine return air (publication number: CN202442550U), a mine return air source heat pump system (publication number: CN201852361U), and a mine heat and moisture source energy collection and utilization system (publication number: CN203432151U) have all proposed a A mine return air sprinkler system, but no research on system adjustment and control methods; a spray system based on a multi-parameter mine spray heat transfer efficiency calculation method (publication number: CN105807609A) proposes a mine return air spray system The control method of the sprinkler system, but does not consider the dynamic changes of the atmospheric environment parameters and the heating load; a system and method for mine waste heat recovery using cloud processing (publication number: CN105806144A) through the means of cloud processing in terms of operation management The mine waste heat recovery system is managed and controlled, but the optimization research and control of the system parameters are insufficient; a method for determining the performance evaluation index of the spray type mine return air heat exchanger (publication number: CN105139117A) proposes the mine return air heat exchange However, there is insufficient research on the internal laws of calculation parameters and heat transfer optimization methods.

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