Application Research Of Gas-driven Absorption Heat Pump In Central Heating Peak Regulation

In response to the national environmental protection call of carbon peak and carbon neutral,small coal heating methods are limited,and gas heating is widely used.Gas driven absorption heat pump application in the central heating load is met some problems,in order to solve these problems,this thesis studies the drive by gas central heating load of absorption heat pump for heating equipment regulating mode,how to determine the appropriate peak shaving heating way,determine the scope of the outdoor air temperature of the heat pump application project peak shaving,The thermal efficiency of the gas boiler was calculated by the field thermal test according to the peaking temperature range.According to the measured thermal parameters and the COP calculation theory of the heat pump,the ideal COP was calculated,and the correction coefficient was obtained by comparing with the actual data.Finally,Microcal Origin software was used to fit the actual thermal data.The empirical formula of heat pump COP is derived and simplified and extended.In this thesis,the research on the practical application project of gas-driven absorption heat pump in the secondary network district heating peak adjustment is the main line,and the research on the following parts of work is carried out:This thesis discusses the topic background and advantages of gas-driven absorption heat pump used in central heating peak regulation technology,as well as the research status at home and abroad,so as to solve the problem of how to use gas-driven absorption heat pump in central heating peak regulation.Based on the theoretical analysis and field test of several modes of central heating peak regulation in secondary network,it is found that gas-driven absorption heat pump is suitable for gas-fired boiler and gas-driven absorption heat pump combined peak regulation in secondary network,and the comprehensive heating efficiency of this mode is the highest,which is 139.85%.The continuous hour curve is drawn to determine the peak adjustment range of outdoor air temperature from-2?to-12?.In order to carry out effective peak regulation.Through the theoretical analysis of the efficiency of gas-driven absorption heat pump and gas-fired boiler,the forward and reverse balance efficiency formula of gas-fired boiler and the COP calculation formula of heat pump are obtained.Field tests were carried out on a secondary network central heating peak-changing heat exchange station in Jinan,which has gas-driven absorption heat pump and gas-fired boiler.Relevant thermal data were collected and systematically summarized,and then analyzed and processed.The COP correction coefficient of heat pump during the test period was 0.891.Heat pump a heating season can save about 1221178.8m~3 of gas.This study provides a very effective reference for the subsequent system design and operation regulation.Based on the actual thermal data obtained from the field test,the empirical formula of the heat pump COP is deduced,and the COP empirical formula is simplified and extended according to the relationship between a certain parameter or two parameters and the COP from the actual engineering situation,which provides reference for the subsequent engineering design.