A Thermo-Hydraulic couplings model for residential heating system based on Demand-side Regulation: Development and calibration

Demand-side regulation is a practical method to decrease the overheating loss and improve comfort level of users. The existing simulation model methods are difficult to evaluate the interaction of user regulation. And there is still no reasonable model method to prove the feasibility of demand-side regulation. To solve this problem, a residential building heating system model considering the thermo-hydraulic coupling and demand-side regulation was built on TRNSYS 18. It was calibrated by a residential building in Harbin. Results showed that using infiltration rates recommended by ASHARE as stochastic calibration parameters, the users that met the validation criteria would increase by 7%. The increased thermal resistance caused by internal surface fouling in the buried pipe should also regarded as a stochastic parameter in the calibration process. After calibrated these two stochastic parameters, the model achieved satisfactory accuracy and all the 144 users met the validation criteria. The calibrated model could provide the ability to simulate the various regulation behaviors of each user, and truly response to heating and hydraulic conditions based on users' regulation. The validated simulation model can be leveraged as a rigorously validated benchmark residential heating system based on demand-side regulation. (c) 2021 Elsevier B.V. All rights reserved.