5kW Salor Energy Absorption Heat Transformer Heating System Design

Along with the rapid development of economy and technology,the impact of environmental destruction and energy consumption is becoming more and more obvious.At present,most of the energy that can be used is high-quality and high-temperature heat energy.Those low-quality or low-energy heat energy cannot be used,resulting in loss of energy.To solve this problem,the absorption heat pump and transformer come into being,no electric energy is required as a drive,no The need for high-temperature and high-quality thermal energy has become its biggest feature.The recycling of waste heat or new energy as a driving heat source has solved the environmental and energy problems.In particular,the absorption heat transformer can be driven by using hot water and steam which are not used at a low temperature,and is heated to a use temperature.However,since the temperature rise of the single-effect absorption heat transformer is at most about 30 °C,it is not enough in industrial situations where the temperature rise is large.Change the heat transformer and improve the temperature.The system cycle working medium set in this paper is lithium bromide-water solution,which has the advantage that lithium bromide has strong water absorption.The vapor produced by heating lithium bromide solution is completely water vapor,and does not contain solution vapor,no matter the stability and use of the system.The service life is also a good working fluid for the improvement of the heating temperature.The driving heat source is set to recover waste heat,and solar energy is used as an auxiliary heat source,assisting a double heat transformer system with a injector.Ignore the power of the solution transformer and the regulating valve,excluding the internal heat loss of the system,excluding the impact of the pipeline.Under ideal conditions,based on the first law of thermodynamics and the second law,the internal circulation of the double absorption heat transformer with an ejector is studied to obtain the temperature rise,efficiency and energy usage that the new system can obtain.Set the amount of heat required by the absorberrequired.The power of each component and the operating parameters of the injector are obtained by simulation,and the specific parameters of the injector are calculated according to the working conditions.After comparative analysis,the following conclusions can be obtained.As the temperature of the cooling water increases,the temperature rise that the absorption heat transformer can obtain is smaller.When the temperature of the cooling water is high or the temperature difference with the driving heat source is too small,the system with the ejector absorption heat transformer can obtain a higher temperature rise than the ordinary absorption heat transformer system,but as the temperature of the driving heat source increases,the temperature difference increases.The advantage is smaller.The increase in the driving heat source directly affects the degree of temperature rise,and the higher the temperature,the higher the heating temperature.Although the interior of the system has become more complicated,it has greatly increased the difficulty of simulation and calculation.However,under the same conditions of driving the heat source and the cooling water,the COP of the system is increased after the injector is added to the system,which makes the research system more meaningful.Using a control method with a Smith compensator allows the system to quickly reach a steady state and improve stability.