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Auxiliary Boiler

The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform

Chris Bales – 1st expert on this subject based on the ideXlab platform

  • Generic System #11: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advanced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems
    , 2004
    Co-Authors: Chris Bales

    Abstract:

    Generic System #11: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advanced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems

  • Generic System #12: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advenced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems(system description, modelling, sensitivity, optimisation
    , 2004
    Co-Authors: Chris Bales

    Abstract:

    Generic System #12: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advenced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems
    (system description, modelling, sensitivity, optimisation

  • generic system 11 space heating store with dhw load side heat exchanger s and external Auxiliary Boiler advanced version a technical report of iea shc task 26 solar combisystems
    , 2002
    Co-Authors: Chris Bales

    Abstract:

    Generic System #11: Space Heating Store with DHW Load Side Heat Exchanger(s) and External Auxiliary Boiler (Advanced Version). A Technical Report of IEA-SHC Task 26 Solar Combisystems

Junfu Lv – 2nd expert on this subject based on the ideXlab platform

  • Modelling of the whole process of a university campus CHP power plant and dynamic performance study
    International Journal of Automation and Computing, 2016
    Co-Authors: Yue Wang, Akmaral Bermukhambetova, Jihong Wang, Mark Donner, Junfu Lv

    Abstract:

    Combined heat and power (CHP) refers to a process/system designed to utilize the waste or residual heat from a power generation process. Thus, a CHP plant can produce both electricity and heat. The nature of such a combination makes the process more complex than any single power generation process or Boiler heating system. The paper focuses on modelling study and analysis of energy efficiency of the University of Warwick micro-CHP power plant. In this CHP modelling study, a gas turbine module is built to provide driving power and methane is used as fuel gas. Heat recovery system and Auxiliary Boiler modules are developed for thermal power generation. All the sub-systems are validated by comparing the simulation results with the operating data collected from the CHP plant. The dynamic performance of the key CHP process outputs is studied with respect to the variation of the input syngas stream, including electricity generation, thermal power output and water output temperature. Simplified controllers are also applied to the gas engineheat recovery subsystem and Auxiliary Boiler. Simulation results with/without feedback control are both analyzed. The study has highlighted the key factors which influence the plant performance and suggested the strategy for potential energy efficiency improvement.

  • ICAC – Dynamic modelling and simulation study of a university campus CHP power plant
    2014 20th International Conference on Automation and Computing, 2014
    Co-Authors: Yue Wang, Akmaral Bermukhambetova, Jihong Wang, Junfu Lv

    Abstract:

    Combined Heat and Power (CHP) has become one of the most widely used technologies to provide electricity and heat with a single plant. Modelling and simulation study of the CHP process is important for power and thermodynamics evaluation and economic analysis. A simplified dynamic model based on the University of Warwick micro-CHP power plant is developed in this paper. In this CHP process, a gas turbine module is adopted and modelled as the gas engine based on methane combustion principle to generate electricity. Heat recovery system and Auxiliary Boiler modules are developed for thermal power generation. The simulation results of the gas engine and each Auxiliary sub-system are validated by comparing the results with the operating data collected by the Estates Team of the University of Warwick. In addition, the dynamic performance of the whole CHP process is studied with respect to the variation from the input of syngas stream. The simulation results show the dynamic changes of key output variables, including electricity generation, thermal power output and water output temperature. The simulation results of one summer working day and one winter working day of gas engine and heat exchanger are compared with operation data. The Auxiliary Boiler simulation data is analyzed and compared with collected operation data of one spring and one winter working day.

  • Dynamic modelling and simulation study of a university campus CHP power plant
    2014 20th International Conference on Automation and Computing, 2014
    Co-Authors: Yue Wang, Akmaral Bermukhambetova, Jihong Wang, Junfu Lv

    Abstract:

    Combined Heat and Power (CHP) has become one of the most widely used technologies to provide electricity and heat with a single plant. Modelling and simulation study of the CHP process is important for power and thermodynamics evaluation and economic analysis. A simplified dynamic model based on the University of Warwick micro-CHP power plant is developed in this paper. In this CHP process, a gas turbine module is adopted and modelled as the gas engine based on methane combustion principle to generate electricity. Heat recovery system and Auxiliary Boiler modules are developed for thermal power generation. The simulation results of the gas engine and each Auxiliary sub-system are validated by comparing the results with the operating data collected by the Estates Team of the University of Warwick. In addition, the dynamic performance of the whole CHP process is studied with respect to the variation from the input of syngas stream. The simulation results show the dynamic changes of key output variables, including electricity generation, thermal power output and water output temperature. The simulation results of one summer working day and one winter working day of gas engine and heat exchanger are compared with operation data. The Auxiliary Boiler simulation data is analyzed and compared with collected operation data of one spring and one winter working day.

Luigi Mongibello – 3rd expert on this subject based on the ideXlab platform

  • Economic optimization of a residential micro-CHP system considering different operation strategies
    Applied Thermal Engineering, 2016
    Co-Authors: Martina Caliano, Nicola Bianco, Giorgio Graditi, Luigi Mongibello

    Abstract:

    In this work the economic optimization of a micro-CHP system producing electricity and heat during the cold season, for a multi-apartment housing situated in Italy, is addressed. The system is composed of a prime mover, fed by natural gas, a thermal energy storage system and an Auxiliary Boiler. Two heat-led operational strategies have been implemented in order to evaluate the operation scheduling that maximizes the revenues for the energy cogeneration with respect to the separate generation. The first strategy limits the prime mover production to the user heat request and the heat required to fill the thermal energy storage, while the second novel one permits to have thermal energy produced in excess by the prime mover, or rather it allows to have heat dumping. The analysis of the micro-CHP system has been realized using two different solvers, namely, a home-made numerical code written in Matlab environment, that has been used in order to perform the economic optimization of the micro-CHP system operation, and the commercial software TRNSYS 17, used to carry out the dynamic simulation of the micro-CHP system. The main result of the present study is represented by the demonstration of the practical feasibility of the operation resulting from the economic optimization of the micro-CHP system, for both the analyzed operation strategies.

  • Influence of heat dumping on the operation of residential micro-CHP systems
    Applied Energy, 2015
    Co-Authors: Luigi Mongibello, Martina Caliano, Nicola Bianco, Giorgio Graditi

    Abstract:

    This work deals with the effects of the heat dumping on the operation of four residential micro-CHP (combined heat and power) systems, each composed of a prime mover producing electricity and heat, a thermal energy storage system and an Auxiliary Boiler. The micro-CHP systems differ from one another on the prime mover, while the same multi-apartment housing situated in Italy has been considered as user. Four natural gas fueled commercial prime movers have been considered, two internal combustion engines and two microturbines, characterized by different electric and thermal powers. For each micro-CHP system, two heat-driven operation strategies, one with heat dumping and one without have been implemented by means of a home-made numerical code developed in Matlab environment, and in both the cases the economic optimization of the operation has been performed using the pattern search algorithm. For each analyzed case, the results are reported in terms of prime mover operating hours, thermal and electrical energy production, natural gas consumption, primary energy and economic savings with respect to separate generation of electricity and heat, and pollutants emission. The results of an economic analysis are also reported. The effects of the variation of the maximum capacity of the thermal energy storage system, and of the Auxiliary Boiler efficiency on the optimization results are analyzed, and the results relative to the two different operation strategies are compared and discussed. The major result of this study is that, for all the analyzed micro-CHP systems, an optimized application of heat dumping in the micro-CHP system operation permit to considerably reduce the size of the thermal energy storage system with respect to the heat-driven operation strategy without heat dumping.