Technique of multilevel adjustment calculation of the heat-hydraulic mode of the major heat supply systems with the intermediate control stages

Tokarev, V. V.; Shalaginova, Z. I.

doi:10.1134/s0040601516010110

Cited by 24 publications

(19 citation statements)

References 1 publication

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“…At the same time, the possibility of decomposition of the thermohydraulic model into the model of hydraulic (GR) and thermal regimes (TP) is widely used [5,10]. To obtain a solution, it suffices to solve successively the problems of calculating the GR and TP [19].…”

Section: Methodsmentioning

confidence: 99%

The method of adjustment of heat supply systems with the multistage temperature control at pumping stations

Tokarev

Novitsky

2018

MATEC Web Conf.

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The lowering of the temperature graph in the lower-level heat networks is often carried out by a mixture of coolant from the return pipeline at mixing pumping stations in order to maintain the set temperature of the mixed water. In this case, part of the heat carrier is not returned to the source of thermal energy, but it circulates in the circuits from the mixing station to the lower consumption nodes. The presence of such circulation flows leads to the absence of a stabilizing moment of the temperature field when it is calculated by traditional methods, as well as to the “looping” of the computational process and the impossibility of obtaining a solution. In work to overcome these problems, a new computational scheme for commissioning calculation is proposed, which is based on: (a) decomposing the calculation of the thermal-hydraulic regime into calculations of the hydraulic and temperature conditions; (b) using the conditional regulator of the ratio of the mixing station’s output costs in calculating the hydraulic regime; (c) fixing the temperature at the station’s output when calculating the temperature regime; (d) iterative calculation with correction of the setpoint of the ratio controller of the flow rate based on the calculation of the temperature regime.

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Section: Methodsmentioning

confidence: 99%

The method of adjustment of heat supply systems with the multistage temperature control at pumping stations

Tokarev

Novitsky

2018

MATEC Web Conf.

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“…The problems of hydraulic and thermal calculations are reduced to solving systems of linear and nonlinear equations. These problems are solved by the effective methods developed at Melentiev Energy Systems Institute of SB RAS [8,23,24].…”

Section: A Proposed Approach To Solve the Problemmentioning

confidence: 99%

“…Design of pipeline systems involves the methods of hydraulic and thermal calculations, which are considered in [20][21][22][23][24]. In [25][26], the focus is made on the methods for an analysis and improvement of energy system reliability.…”

Section: Introductionmentioning

confidence: 99%

An approach to design of an intelligent heating system

2018

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Abstract. At present, there is a growing need to solve the design problem of the hydraulic circuit of an intelligent heating system with the required transmission capacity, hydraulic stability and reliability indices. The paper proposes a mathematical statement of the design problem of such a hydraulic circuit and an original methodological approach to solve it by decomposing a general complex problem into several simpler ones (of a smaller dimensionality). The proposed approach makes it possible to tailor the computational procedure to specific features of a heating system to be modeled.

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“…proach in [19][20][21][22] with determination of individual corrections of heat carrier flow rates to compensate for heat losses in the networks for each consumer. If the network throughput is insufficient, the temperature chart is corrected according to [23][24].…”

Section: Technology Of Development Of Hss Operation Conditionsmentioning

confidence: 99%

Generalization of multi-level modeling methods for development and analysis of operating conditions of large heat supply systems

Shalaginova

Tokarev

2018

E3S Web Conf.

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Abstract. The paper presents a methodology of multi-level modeling of thermal-hydraulic conditions of large heat supply systems on the basis of the scientific area of research -the theory of hydraulic circuits -that has been developed at MESI SB RAS. The essentials of the applied methods and also the mechanism of their integration with the up-to-date information technologies are described. In combination they make it possible to calculate operating conditions of heat supply systems (HSS) of arbitrary size and structure. The applied approach is based on the multi-level arrangement of data and single-and multi-level calculations. The latter, in turn, are based on application of the methods of equvalenting and decomposition of both the calculation schemes and problems. The methods for multi-level adjustment thermal-hydraulic calculations take into consideration all requirements for feasibility of conditions and are realized as the informationcomputing system (ICS) "ANGARA-TS". The problems to be solved using the ICS and the technology for development of operating conditions are presented. The ICS is applied to sets of real HSS of big towns to develop conditions and adjustment measures. The composition of the solved tasks implemented in the ICS, the technology of development of operating conditions and an example of a multilevel modeling of the thermal-hydraulic conditions of the HSS in Petropavlovsk-Kamchatsky are presented.

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Technique of multilevel adjustment calculation of the heat-hydraulic mode of the major heat supply systems with the intermediate control stages

Cited by 24 publications

References 1 publication

The method of adjustment of heat supply systems with the multistage temperature control at pumping stations

The method of adjustment of heat supply systems with the multistage temperature control at pumping stations

An approach to design of an intelligent heating system

Generalization of multi-level modeling methods for development and analysis of operating conditions of large heat supply systems

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