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An improved thermal transient model was put forward to predict the thermal transient behavior of a long pipe. The model took particular consideration of the influences of the pipe wall's thermal inertia. Then a new 3-order numerical solution was presented to solve the proposed model. The new solution would not only preserve the sharp temperature front during the heat propagation, but also achieve...
Integrating electric heater (EH) and heat storage (HS) into power systems is a feasible solution to reduce wind power curtailment. However, most researches consider the capacities optimization without their distribution. Based on a practical power grid with eight buses, utilizing the DC power flow model together with the capacity and operation constraints of EH, HS and other power units gives the...
Smart district heating integrated various advanced technologies to implement the motivation structures and minimum operation cost. In this paper, an exact mathematical model has developed to describe the thermal and hydraulic characteristics of a district heating system which applied the distributed variable-speed pumps. Afterwards, two associate optimization models have been established and the relevant...
Due to the nature of fluctuation and intermittence, integration of renewable energy sources (RESs) requests more flexibility of power systems. However, the “heat-led” operation mode limits the adjustability of combined heat and power (CHP) plants, and reduce the accommodation of RESs. This paper studies an integrated thermal and power system and introduces a phase-change heat storage (HS) facility...
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