EP3325883A1 - Système pour appareil de chauffage et procédé permettant de faire fonctionner un système pour appareil de chauffage - Google Patents

Système pour appareil de chauffage et procédé permettant de faire fonctionner un système pour appareil de chauffage

Info

Publication number
EP3325883A1
EP3325883A1 EP16741000.0A EP16741000A EP3325883A1 EP 3325883 A1 EP3325883 A1 EP 3325883A1 EP 16741000 A EP16741000 A EP 16741000A EP 3325883 A1 EP3325883 A1 EP 3325883A1
Authority
EP
European Patent Office
Prior art keywords
control
regulating unit
power
fuel
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16741000.0A
Other languages
German (de)
English (en)
Inventor
Mauro André OLIVEIRA SIMOES
Ricardo Jorge de Sousa Vieira
Marco Marques
Luis Miguel Pacheco Monteiro
Sergio Salustio
Duarte Nuno FERNANDES GARCIA LIMA
Joel Filipe PEREIRA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Termotechnologia SA
Original Assignee
Bosch Termotechnologia SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Termotechnologia SA filed Critical Bosch Termotechnologia SA
Priority claimed from PCT/EP2016/067007 external-priority patent/WO2017013048A1/fr
Publication of EP3325883A1 publication Critical patent/EP3325883A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating air supply or draught using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/08—Regulating air supply or draught by power-assisted systems
    • F23N3/082—Regulating air supply or draught by power-assisted systems using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/20—Measuring temperature entrant temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/21—Measuring temperature outlet temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/04—Heating water

Definitions

  • Gas-powered storage heater and / or water heater are known from the prior art, which include a control and / or regulating unit for setting an air ratio to a desired air ratio.
  • the adjustment can be effected, for example, on the basis of a temperature of a heating flame, an ionisation signal of the heating flame and / or on the basis of an exhaust gas sensor signal.
  • the invention is based on a heater device having at least one control and / or regulating unit which is provided to set an air ratio of combustion, in particular of a mixture, in particular of a combustion air and a fuel, to a desired air ratio.
  • control and / or regulating unit is provided to determine, in particular to determine and / or advantageously calculate a power correction factor in at least one operating state and to take this into account when setting the air ratio.
  • a "heater device” is to be understood as meaning, in particular, at least one subassembly, in particular a subassembly, a heater, and preferably a continuous flow heater
  • a heater and preferably a continuous flow heater
  • a "heating unit” is to be understood as meaning in particular a unit which is intended to convert energy, in particular bioenergy and / or preferably fossil energy, in particular directly, into heat and, in particular, to supply it to a fluid, advantageously water
  • the heating unit comprises at least one heating module, which is intended in particular to burn the mixture, in particular from the combustion air and the fuel, and advantageously at least one heat exchanger
  • the heating module is advantageously constructed as a burner, in particular an oil burner and more preferably a gas burner
  • a thermal connection with the heat exchanger is intended.
  • "Provided” is to be understood in particular to be specially programmed, designed and / or equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • a "dosing device” is to be understood as meaning in particular a unit, in particular electrical and / or electronic unit, in particular actuator unit, advantageous actuating unit, which is intended to influence the mixture, in particular from the combustion air and the fuel
  • At least one metering device is provided for adjusting, regulating and / or conveying a volume flow and / or a mass flow, in particular a combustion air flow and / or a fuel flow.
  • the metering device for fuel may advantageously be in the form of a fuel pump, in particular variable in flow rate, and / or preferably as a fuel valve, in particular variable in flow rate Fuel provided to modulate a heating power of the heater device.
  • a “sensor” is to be understood in particular as meaning a unit which is provided with at least one measured variable correlated to the combustion, in particular at least one pressure, at least one flow and / or at least one temperature, in particular the combustion air, advantageously the combustion air.
  • the fuel advantageously the fuel flow, and / or the fluid, in particular at least indirectly and / or advantageously direct to detect.
  • an "air ratio" is to be understood in particular as a factor which depends in particular on the combustion air and / or the fuel and determines a quality of the combustion and / or on the basis of which a quality of the combustion can be concluded the air ratio a ratio of an amount of combustion air actually contained in the mixture, in particular from the combustion air and the fuel to a stoichiometrically required amount of combustion air, in particular for a complete
  • An air ratio which has the value 1 corresponds in particular to a stoichiometric combustion air ratio.
  • the air ratio corresponds to a, in particular direct and / or indirect, control and / or controlled variable.
  • a “desired air ratio” is to be understood to mean, in particular, an air number below which the combustion should take place and / or which leads to optimized combustion, advantageously a stable heating flame, a minimum pollutant emission and / or a maximum efficiency the desired air ratio is in a slightly lean mixture range, in particular the mixture of the combustion air and the fuel, and in particular between 1, 15 and 1, 45, preferably between 1, 2 and 1, 4 and more preferably between
  • control and / or regulating unit is also to be understood as meaning, in particular, an electrical and / or electronic unit having at least one control electronics unit.
  • Control electronics are intended in particular to mean a unit having a computing unit and a memory unit as well as a control unit Storage unit stored operating, control and / or control program, which is in particular intended to be executed by the arithmetic unit to be understood.
  • the control and / or regulating unit is provided to provide at least one control signal for setting and / or adjusting at least one metering device, in particular the metering device for combustion air and / or the metering device for fuel.
  • control and / or regulating unit is provided to provide the heating power, in particular a requested heating power and / or a desired heating power, by adjusting and / or adjusting the at least one dosing device.
  • a "power correction factor” is to be understood as meaning, in particular, a factor which is dependent, in particular, on the fuel, in particular a composition and / or a type of fuel, which is associated with the heating power, in particular an output power of the heating unit, in particular the heating module
  • an "input power” is to be understood as meaning, in particular, a power, in particular thermal power, supplied to the heating unit, in particular the heating module, which itself in particular, would result in a complete and / or optimal combustion of a, in particular the heating unit, supplied fuel.
  • the input power is correlated in particular with a chemical energy contained and / or stored in the fuel, in particular that of the heating unit.
  • an "output power" is to be understood as meaning, in particular, an effective and / or an effectively achievable power, in particular thermal power, which results during the combustion of the fuel supplied, in particular to the heating unit.
  • the output power is in particular correlated with a thermal energy, which results, in particular during combustion, from the chemical energy of the fuel, and the output power is in particular via an enthalpy.
  • control and / or regulating unit is intended to close and advantageously self-assess the composition and / or nature of the fuel, such as natural gas and / or liquefied petroleum gas, by way of the power correction factor tig and in particular without intervention of a user to control by adjusting and / or adjusting the at least one dosing an operation.
  • the fuel such as natural gas and / or liquefied petroleum gas
  • a flexibility and / or an efficiency, in particular a power efficiency and / or a cost efficiency, can be increased by a corresponding configuration of the heater device.
  • an autonomously operating heater can be provided, which in particular is able to recognize automatically and in particular without intervention by a user changing conditions, in particular a changing composition and / or type of fuel, and to adapt an operation accordingly, which in particular minimizes costs, increases a functional life and avoids tion can be facilitated.
  • an optimized combustion with a stable heating flame, a minimum emission of pollutants and / or a maximum efficiency can advantageously be ensured, whereby in particular an operational safety can be increased.
  • the power correction factor preferably corresponds to a quotient of a required input power and an actual input power.
  • a "required input power” is to be understood as meaning, in particular, an input power which is required to achieve an output power demanded in particular by the control and / or regulating unit and / or a user instantaneous and / or current input power to be understood.
  • the power correction factor can advantageously be determined particularly advantageously and a control algorithm can be simplified.
  • an "actual output power" is to be understood as meaning, in particular, instantaneous and / or instantaneous output power.
  • the thermal efficiency could, for example, be designed as a reference value and stored in particular in the memory unit of the control and / or regulating unit. and / or regulating unit, however, provided to determine the thermal efficiency at least on the basis of an inlet temperature of the combustion air, in particular the combustion air flow, and / or the fuel, in particular the fuel flow, and / or an exhaust gas temperature of the combustion three sensors, in particular at least one exhaust gas temperature sensor, which is provided for detecting the exhaust gas temperature of the combustion, and at least one temperature sensor for the combustion air and / or the fuel possible aging phenomena and / or signs of wear of the heater device, in particular of the heating module, are taken into account. be taken, which advantageously an accuracy of the power correction factor and / or reliability can be increased.
  • control and / or regulating unit is provided for the requested output power and / or the actual output power on the basis of a temperature of the fluid, in particular an inlet temperature and / or an outlet temperature, in particular of the heat exchanger, and / or a fluid flow, in particular by the heat exchanger, to determine, in particular to determine and / or, advantageously analytically, to calculate.
  • the heater device in this case has at least three sensors, in particular at least two temperature sensors, which are provided for detecting the fluid temperature, and at least one flow sensor.
  • control and / or regulating unit is provided for the power correction factor in the at least one operating state at intervals of not more than 30 s, advantageously not more than 10 s, preferably not more than 5 s and particularly preferably at most 1 s, to determine, in particular to determine and / or, advantageously analytically, to calculate.
  • control and / or regulating unit is provided to determine the power correction factor at least substantially continuously, in particular to determine and / or, advantageously analytically, to calculate.
  • control and / or regulating unit is intended to continuously and / or continuously determine the power correction factor within the scope of a processor speed and / or a clock rate of the arithmetic unit
  • Control and / or arithmetic unit may be provided for ascertaining the power correction factor with each cycle of the arithmetic unit, in particular, in particular, thereby advantageously analyzing, monitoring and, in particular, as quickly as possible, changing conditions, in particular of the fuel, of operation of the heater device. be adapted, whereby a reliability can be advantageously increased.
  • the control and / or regulating unit is preferably provided for at least the power configuration for, in particular analytically, determination and / or calculation of a fuel flow required in particular for a requested output power. factor to take into account.
  • the control and / or regulating unit can advantageously take into account simply a changed composition and / or type of fuel.
  • the control and / or regulating unit is provided to determine an actual combustion air flow in at least one operating state and to take into account, in particular analytical, determination and / or calculation of a required fuel flow.
  • the actual combustion air flow could be determined, for example, by means of at least one flow sensor, at least one mass flow sensor and / or by means of a differential pressure measurement.
  • the heater device preferably has at least one sensor, in particular a pressure sensor and / or a power sensor, whereby an actual combustion air flow can be particularly advantageous be determined and / or cost-effective.
  • an operation can be achieved which is independent of possible fluctuations in the combustion air flow, for example due to a draft.
  • An advantageously simple control can be achieved in particular if the
  • Control and / or regulating unit is provided to adjust a combustion air flow and a fuel flow independently and / or to control, advantageously by an independent control of the dosing device for combustion air and / or the metering device for fuel.
  • the invention is based on a method for operating a heater device, wherein an air ratio for combustion is set to a desired air ratio and in at least one operating state, a power correction factor is determined, which is taken into account when setting the air ratio.
  • a flexibility and / or an efficiency can advantageously be increased.
  • the heater device according to the invention should not be limited to the application and embodiment described above.
  • the heater device according to the invention may have a number deviating from a number of individual elements, components and units specified herein.
  • FIG. 1 is a schematic block diagram of a heater designed as a water heater with a heater device and
  • FIG. 2 is a block diagram for an exemplary operation of the heater apparatus.
  • FIG. 1 shows an exemplary heater 12 in a schematic block diagram representation.
  • the heater 12 is formed in the present case as a water heater. Alternatively, it is conceivable that a heater is designed as a storage heater.
  • the heater 12 includes a heater device.
  • the heater apparatus includes a heating unit 14.
  • the heating unit 14 is provided to heat a fluid.
  • the heating unit 14 is intended to heat water.
  • the heating unit 14 comprises a heating module 16.
  • the heating module 16 is designed as a gas burner module. Alternatively, however, it is also conceivable that a heating unit is provided to another fluid, such as a
  • the heating module 16 has a first metering device 18 for combustion air.
  • the first metering device 18 is designed as a variable-speed fan.
  • the first metering device 18 is intended to convey and / or regulate a flow of combustion air.
  • the first metering device 18 is connected to a first supply line 20 for combustion air.
  • the heating module 16 has a second metering device 22 for fuel.
  • the second metering device 22 is designed as a throughput variable and electronic fuel valve.
  • the second metering device 22 is designed as a control valve, in particular as a voice coil modulated flow control valve.
  • the second doser 22 is intended to promote and / or regulate a flow of fuel.
  • the second metering device 22 is intended to convey and / or regulate a gas.
  • the second metering device 22 is connected to a second supply line 24 for fuel.
  • the heating module 16 further includes a main burner 26.
  • the main burner 26 is formed in the present case as a gas burner.
  • the main burner 26 is connected via the first metering device 18 to the first supply line 20 for combustion air.
  • the main burner 26 is connected via the second metering device 22 to the second supply line 24 for fuel.
  • the main burner 26 is intended to burn a mixture of a combustion air and a fuel in at least one operating state.
  • the main burner 26 is intended to generate a heating flame.
  • a heating module may include a pilot burner, which is particularly intended to provide a pilot flame for a main burner. It is also conceivable, for example, to use a spark ignition instead of a pilot burner.
  • the heating unit 14 comprises a heat exchanger 28.
  • the heat exchanger 28 is arranged in a vicinity of the heating flame.
  • the heat exchanger 28 is intended to transfer thermal energy from the heating module 16 to the fluid.
  • the heat exchanger 28 comprises a supply line 30 for an unheated fluid, in particular water, and an outlet 32 for a heated fluid, in particular water.
  • the heating unit 14 comprises an exhaust gas module 34.
  • the exhaust module 34 is formed as a chimney.
  • the exhaust module 34 is intended to remove exhaust gases.
  • the exhaust gas module 34 is connected to an exhaust gas outlet 36.
  • the heater device has a supply unit 38.
  • the supply unit 38 is provided in the present case to supply the heat exchanger 28 and / or the heater 12, the unheated fluid.
  • the feed unit 38 comprises a fluid inlet 40.
  • the fluid inlet 40 is connected to the feed line 30 of the heat exchanger 28 via a fluid connection.
  • the heater device has a discharge unit 42.
  • the removal unit 42 is provided to remove the heated fluid from the heat exchanger 28 and / or the heater 12.
  • the discharge unit 42 comprises a fluid outlet 44.
  • the fluid outlet 44 is connected to the outlet 32 of the heat exchanger 28 via a further
  • the heater apparatus further includes a plurality of sensors 46, 48, 50, 52, 54.
  • the heater device has at least seven sensors 46, 48, 50, 52, 54.
  • the sensors 46, 48, 50, 52, 54 are precalibrated, in particular to ensure a high accuracy of the determined values. On a recalibration and / or readjustment of the sensors 46, 48, 50, 52, 54 during operation is omitted.
  • a first sensor 46 is designed as a flow sensor.
  • the first sensor 46 is designed as a vortex flowmeter.
  • the first sensor 46 is provided to detect a fluid flow.
  • a second sensor 48 is designed as a first temperature sensor.
  • the second sensor 48 is designed as an NTC immersion sensor.
  • the second sensor 48 is provided to detect a fluid temperature.
  • the second sensor 48 is provided to detect a temperature of the fluid immediately after the fluid inlet 40 and / or directly in front of the feed line 30 of the heat exchanger 28.
  • a third sensor 50 is designed as a second temperature sensor.
  • the third sensor 50 is designed as an NTC immersion sensor.
  • the third sensor 50 is provided to detect a fluid temperature.
  • the third sensor 50 is provided to detect a temperature of the fluid immediately after the outlet 32 of the heat exchanger 28 and / or immediately before the fluid outlet 44.
  • a fourth sensor 52 is designed as a third temperature sensor.
  • the fourth sensor 52 is provided to detect a temperature of the combustion air, in particular the combustion air flow.
  • the fourth sensor 52 is provided to detect a temperature of the combustion air, in particular of the combustion air flow, immediately after the first metering device 18 and / or immediately before the main burner 26.
  • a fifth sensor 54 is designed as a fourth temperature sensor. The fifth
  • Sensor 54 is designed as an exhaust gas temperature sensor.
  • the fifth sensor 54 is to intended to detect a temperature of a combusted mixture of the combustion air and the fuel.
  • the fifth sensor 54 is provided to detect a temperature of the combusted mixture immediately after the main burner 26 and / or immediately before the exhaust gas outlet 36.
  • a sixth sensor (not shown) is designed as a power sensor.
  • the sixth sensor is intended to detect a power consumption of the first doser 18.
  • a seventh sensor (not shown) is designed as a rotation sensor.
  • the seventh sensor is designed as a magnetic sensor.
  • the seventh sensor is provided to detect a rotational speed of the first doser 18.
  • the speed is a quantity that reflects the revolutions per unit of time, for example the revolutions per minute.
  • a heater device comprises further sensors, such as at least one pressure sensor and / or at least one temperature sensor for a fuel and / or for a mixture of a combustion air and a fuel.
  • the heater device has a control and / or regulating unit 10.
  • the control and / or regulating unit 10 is intended to control an operation of the heater device.
  • the control and / or regulating unit 10 has an arithmetic unit, a memory unit and an operating program stored in the memory unit, which is intended to be executed by the arithmetic unit.
  • the control and / or regulating unit 10 is provided to set and / or to provide a requested heating power.
  • the control and / or regulating unit 10 has an electrical connection with the first metering device 18 and the second metering device 22.
  • control and / or regulating unit 10 is provided for independently setting the combustion air flow and the fuel flow by means of the first metering device 18 and the second metering device 22.
  • control and / or regulating unit 10 has an electrical connection with the sensors 46, 48, 50, 52, 54.
  • the control and / or regulating unit 10 is provided to set an air ratio A c of the combustion to a desired air ratio Ad.
  • control and / or regulating unit 10 is provided to determine a power correction factor CF in at least one operating state and to take it into account when setting the air ratio A c to the desired air ratio Ad.
  • the control and / or regulating unit 10 is provided, the air ratio A c depending on the combustion air flow, in particular a required combustion air flow Qair.d and / or an actual combustion air flow Qair.c, and the fuel flow, in particular a required fuel flow Q gas , d and / or an actual fuel flow Q ga s, c, adjust to the desired air ratio Ad.
  • the air ratio A c depending on the combustion air flow, in particular a required combustion air flow Qair.d and / or an actual combustion air flow Qair.c
  • the fuel flow in particular a required fuel flow Q gas , d and / or an actual fuel flow Q ga s, c, adjust to the desired air ratio Ad.
  • control and / or regulating unit 10 is provided to an output power, in particular a requested output power P ou t, d and / or an actual output power P 0 ut, c, based on a temperature of the fluid, in particular a requested output temperature T ou t, d of the fluid, a determined by means of the third sensor 50 actual output temperature T ou t, c of the fluid and / or an ascertained by means of the second sensor 48 inlet temperature T, n of the fluid, and a fluid idstroms q m to determine.
  • a requested output power P ou t, d and / or an actual output power P 0 ut, c based on a temperature of the fluid, in particular a requested output temperature T ou t, d of the fluid, a determined by means of the third sensor 50 actual output temperature T ou t, c of the fluid and / or an ascertained by means of the second sensor 48 inlet temperature T, n of the fluid, and a fluid
  • control and / or regulating unit 10 is provided to an input power, in particular a required input power Pm, d and / or an actual input power Pm, c , based on the output power, in particular the requested
  • the control and / or regulating unit 10 is provided for determining the thermal efficiency ⁇ at least on the basis of an input temperature of the combustion air determined by the fourth sensor 52 and an exhaust gas temperature determined by means of the fifth sensor 54, whereby in particular possible aging phenomena of the heating module 16 can be considered.
  • the control and / or regulating unit 10 is provided to a mixture region in which the combustion takes place to determine.
  • control and / or regulating unit 10 makes use of the property that in the lean mixture range an increase in the fuel flow at a constant combustion air flow leads to an increase in the output power, whereas in a rich mixture range (A c ⁇ 1) this is not the case is.
  • control and / or regulating unit 10 is provided on the basis of the exhaust gas temperature to determine the air ratio A c .
  • Pin.d Qgas, d ⁇ P
  • Pi corresponds to a calorific value of the heating unit 14, C n a flow coefficient of a Hauptbrennerdüse, W, a Wobbe index of a current fuel, Wi, re f a Wobbe index of a reference fuel, CF the power correction factor, p a density of the fuel, PB a pressure of the main burner and / or one Back pressure of the main burner nozzle and p a ir a pressure of the combustion air and / or a back pressure of the main burner nozzle.
  • the power correction factor CF corresponds to a quotient of the required input power Pm, d and the actual input power Pm, c . If the main burner 26 is operated with the reference fuel, the power correction factor CF is given by the value 1. In the present case, the power correction factor CF thus corresponds to a factor that depends on the current fuel.
  • control and / or regulating unit 10 is provided for determining an air-number correction factor ⁇ dependent on the power correction factor CF and for determining the air-fuel ratio A c and / or the desired air-fuel ratio Ad, in particular in equation (1). to take into account.
  • a difference between equation (1) and equation (9) is less than 5%, so that a determination of the air number correction factor ⁇ can also be dispensed with. If the control and / or regulating unit 10 and / or a user, a heated fluid and thus a certain output temperature T ou t, d requested, the control and / or regulating unit 10 is provided for the requested output power P 0 ut, d the required combustion air flow Q a i r , d and the required fuel flow Qgas.d to determine and in particular the actual Verbrennungs Kunststoff- Ström G c and the actual fuel flow Q gas , c adjust accordingly.
  • FIG. 2 The individual operating steps for this purpose are illustrated in FIG. 2 on the basis of an exemplary block diagram, wherein an order of the individual operating steps may at least partially vary.
  • control and / or regulating unit 10 is provided to determine and read in required measured values by means of the sensors 46, 48, 50, 52, 54.
  • control and / or regulating unit 10 is provided to determine the requested output power P ou t, d on the basis of the requested starting temperature T ou t, d and in particular using equation (2).
  • control and / or regulating unit 10 is provided, on the basis of the requested output power P ou t, d and in particular using equation (9) or alternatively of equation (1), the required combustion air flow Q a i r , d to determine and to readjust the first metering 18 accordingly.
  • control and / or regulating unit 10 is provided to determine the required input power Pin.d based on the required output power P 0 ut, d, on the basis of the thermal efficiency ⁇ and in particular using equation (3) ,
  • the control and / or regulating unit 10 is provided to determine an actual combustion air flow Q a i r , c .
  • the control and / or regulating unit 10 is provided to determine the actual combustion air flow Qair.c based on a determined by means of the seventh sensor speed of the metering device 18 and a stored in the memory unit of the control and / or regulating unit 10 characteristic field.
  • a control and / or regulating unit 10 to provide an actual combustion air flow on the basis of a power consumption of the first dosing device 18, in particular of the control and / or regulating unit 10 determined by the sixth sensor Control of the first dosing device 18 known to determine the speed of the first dosing device 18 and a stored in the memory unit of the control and / or regulating unit 10 characteristic field.
  • a control and / or regulating unit is provided to determine an actual combustion air flow by means of at least one flow sensor, at least one mass flow sensor and / or by means of a differential pressure measurement.
  • the control and / or regulating unit 10 is provided to close on the basis of the actual combustion air flow Qair.c on the pressure of the combustion air p a i r .
  • control and / or regulating unit 10 is provided on the basis of the required input power Pm, d and the pressure of the combustion air p a i r and in particular using equation (4) and (8) the pressure of
  • control and / or regulating unit 10 is provided, in particular by means of equation (5), to determine the required fuel flow Qgas.d and readjust the second metering device 22 accordingly. Accordingly, the control and / or regulating unit 10 is provided to take into account the actual combustion air flow Q a i r , c for determining the required fuel flow Q gas , d.
  • control and / or regulating unit 10 is provided for the determination of the required fuel flow Q gas , d to take into account the power correction factor CF ZU.
  • control and / or regulating unit 10 is provided to determine the power correction factor CF in an operating step 68 and to take it into consideration in the operating step 62.
  • the control and / or regulating unit 10 is provided to determine the actual output power P ou t, c on the basis of the actual output temperature T ou t, c and in particular using equation (2).
  • the control and / or regulating unit 10 is provided to determine the actual input power Pm, c on the basis of the actual output power P ou t, c and in particular using equation (3).
  • the power correction factor CF then results as a ratio between the required input power Pi n , d and the actual input power Pm, c and in particular based on
  • the control and / or regulating unit 10 is provided to adapt the required input power Pin.d by means of the correction factor CF.
  • the control and / or regulating unit 10 is provided to determine the power correction factor CF in the at least one operating state at intervals of 0.5 s and to adjust the required input power Pm, d at least substantially continuously by means of the power correction factor CF.
  • C F (n) P in , d / pin, c - C F (n-1) (10)
  • CF (n-1) corresponds to a power correction factor CF at time n-1
  • CF (n) corresponds to a power correction factor CF at time n.
  • times n and n-1 have a difference of 0.5 s.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

L'invention concerne un système pour appareil de chauffage comportant au moins une unité de commande et/ou de régulation (10) conçue pour régler un facteur d'air (λc) d'une combustion à la valeur d'un facteur d'air de consigne (λd). Selon l'invention, l'unité de commande et/ou de régulation (10) est prévue pour déterminer au moins un facteur de correction de puissance (CF) dans au moins un état de fonctionnement et pour tenir compte de celui-ci lors du réglage du facteur d'air (λc).
EP16741000.0A 2015-07-17 2016-07-18 Système pour appareil de chauffage et procédé permettant de faire fonctionner un système pour appareil de chauffage Withdrawn EP3325883A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT2015108703 2015-07-17
PCT/EP2016/067007 WO2017013048A1 (fr) 2015-07-17 2016-07-18 Système pour appareil de chauffage et procédé permettant de faire fonctionner un système pour appareil de chauffage

Publications (1)

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EP3325883A1 true EP3325883A1 (fr) 2018-05-30

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EP16741000.0A Withdrawn EP3325883A1 (fr) 2015-07-17 2016-07-18 Système pour appareil de chauffage et procédé permettant de faire fonctionner un système pour appareil de chauffage

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EP (1) EP3325883A1 (fr)

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