The Simulation And Performance Analysis For A Boiler Room Heating System

Central heating system distributes heat energy from the heat sources to the users through heat supply pipes.The central heating system in our country has been developing rapidly since 1950 s when plenty of such heating systems were established in many northern cities.With the development of heating technology,the management level of heat supply increases gradually,whereas it is still inadequate to meet the increasing demand for the comfort and energy-saving heating.Nowadays,the heating regulation is manually controlled,which exhibits severe thermal inertial when the changes of the indoor and outdoor environments are relatively large.As a result,it is difficult for the heating system to operate in an energy-efficient way based on the current thermoregulation approaches.This project established a simulation model for the central heating system based on MATLAB/Simulink.This model can be used to set the indoor temperatures by adjusting the key heating parameters(e.g.,temperatures of supply and return water,mass flow rate,thermal load variation cures)according to the outdoor temperatures.This model was validated through the thermoregulation strategy of the open-loop control systems based on the actual input parameters of the heating system.This simulation model is convenient to use for the technicians.Based on the simulation results under different perturbations and different regulation strategies,the technicians could learn more about the thermoregulation response and system stability of the heating system and thereby further understand the corresponding dynamic characteristics.Furthermore,the heating system could be operated under the new regulation curves based on this model.In addition,this simulation model also could be adopted in the research of automatic control,which is beneficial for the researchers to find more reasonable control strategies and analyze the system response.