Search

EP-4742140-A1 - METHOD AND SYSTEM OF ENERGY CONTROL IN THE CENTRAL HEATING SYSTEM IN THE BUILDING AND/OR CENTRAL HOT WATER INSTALLATION

EP4742140A1EP 4742140 A1EP4742140 A1EP 4742140A1EP-4742140-A1

Abstract

The subject of the invention is a method of controlling energy in a central heating system or a central hot water system in a building, characterized in that it comprises the following steps: a) initiation by the central unit of taking measurements, wherein for a central heating system, the measurement of temperature and flow is initiated by the heating medium temperature sensors, the outside air temperature sensor and the flow sensors in a continuous mode, while for a central hot water installation, the central unit initiates the measurement of the return temperature and the supply temperature; b) collecting data from the sensors by the data acquisition unit; c) sending data from the sensors to the analysis module, in which the first algorithm for controlling central heating and the central heating installation, for central heating, calculates on the basis of input data: the value of the supply temperature necessary to maintain thermal comfort in the building and the flow, and then calculates the basic relationship between the outside air temperature and the actual demand for thermal power of the building, wherein the input data are data obtained from the temperature and flow sensors and reference data including: calculations of the useful energy and thermal capacity of the building, the actual demand for thermal power of the building, the time needed to cool the building by 1 °C; the demand for thermal power of at least two of the most unfavourably located apartments; whereas for the central central hot water installation, the first algorithm calculates the supply temperature value necessary to maintain the temperature according to the Technical Conditions, and then calculates the basic relationship between the supply and circulation temperatures at the appropriate hours of the day on individual days of the week; d) calculation by the first algorithm of the mixer operation schedule in order to regulate the heating medium in the building installation regardless of the temperatures supplied to the supplier; e) starting the mixer operation in accordance with the schedule calculated in stage d), wherein for central heating installations the mixer operation schedule includes its opening and closing depending on the data supplied from the temperature and flow sensors, where closing the mixer cuts off the heating medium from the heat source, preventing its heating, while for central hot water system the mixer operation schedule includes its opening and closing depending on the data supplied from the return temperature sensors, where closing the mixer cuts off the heating medium from the heat source, preventing its heating, f) controlling the mixer operation in real time, wherein for central hot water system the control is carried out by means of an algorithm that checks the return temperature (i.e. circulation) from the installation in real time and, based on the received data, determines the opening or closing of the mixer, thereby maintaining the desired temperature, while for central heating installations the control is carried out by means of an algorithm that checks the supply temperature, return temperature, heating medium flow, outside air temperature in real time and, based on the received data, determines the opening or closing of the mixer, thereby maintaining the desired temperature and flow.

Inventors

  • Sliwinski, Tomasz

Assignees

  • Efektywniej Sp. z o.o.

Dates

Publication Date
20260513
Application Date
20241112

Claims (8)

  1. A method of energy control for a central heating or central hot water system in a building, characterised in that it comprises the following steps: f) Initiation of measurement by the central unit, whereby for the central heating system the heating medium temperature sensors initiate the temperature and flow measurement, the outdoor air temperature sensor, and the continuous flow sensors, while for the central hot water system, the central unit initiates the measurement of the return temperature and the flow temperature; g) Collection of sensor data by the data acquisition unit; h) Sending the sensor data to the analysis module, where the first algorithm for the control of the central heating and the central heating system, for central heating, calculates from the input data: the value of the supply temperature necessary to maintain thermal comfort in the building and the flow rate, followed by the calculation of the basic relationship between the outside air temperature and the actual thermal power demand of the building, the input data being the data acquired from the temperature and flow rate sensors and reference data including: the calculation of the usable energy and heat capacity of the building, the actual heat capacity demand of the building, the time required to cool the building by 1 °C; the heat capacity demands of at least the two most disadvantaged flats; while for the central hot water system, the first algorithm calculates the value of the flow temperature required to maintain the temperature according to the Technical Conditions, after which it calculates the basic relationship between the flow and circulation temperatures at the relevant hours of the day on particular days of the week; i) Calculation by the first algorithm of the mixer operation schedule in order to regulate the heating medium in the building installation independently of the temperatures delivered to the supplier; j) Commencement of mixer operation by the schedule calculated at step d), whereby for the central heating system the mixer operation schedule includes its opening and closing depending on the data provided from the temperature and flow sensors, whereby closing of the mixer cuts off the heating medium from the heat source preventing its heating, in the case of central hot water system, the mixer operation schedule includes its opening and closing, depending on data provided by return temperature sensors, where closing the mixer cuts off the heating medium from the heat source, enabling its heating; f) Real-time control of mixer operation, while for the central hot water system the control is performed by an algorithm which checks the return (i.e. circulation) temperature from the system in real time and, based on the received data, determines whether to open or close the mixer, thus maintaining the desired temperature, while for the central heating system the control is performed by an algorithm which in real time checks the supply temperature, the return temperature, the heating medium flow rate, the outside air temperature, and based on the received data determines whether the mixer is opened or closed, thus maintaining the desired temperature and flow rate.
  2. The method according to claim 1, characterised in that in step c) the calculation of the basic relationship between the outside air temperature and the actual heat power demand of the building is based on at least one heating curve calculated by a second algorithm on the heat power demand of at least two unfavourably located premises, and then the results obtained are verified with the actual state of the heating installation in the unfavourably located premises, and if, adjusting for the most unfavourable result from the calculations obtained, a 'reserve' of thermal power is obtained, new heating curves will be created for different outdoor air temperatures in such a way that, each time, thermal losses are compensated for by thermal power.
  3. The method according to claim 2, characterised in that the angle of inclination of at least one heating curve calculated in step c) is variable and depends on the outside air temperature and on the capacity or size of the radiators in the building.
  4. The method according to claim 2 or 3, characterised in that it comprises a step g), wherein the third algorithm activates a pulse control, wherein it interval decreases at least one heating curve calculated in step c) of the method according to the invention by any smaller value and then, after a time less than time, increases at least one heating curve to return to the value calculated in step c), t being the time required to cool the building by 1 °C.
  5. The method according to any of the preceding claims 1 to 3, characterised in that in step e) at least one algorithm in real time checks the temperature of the return (i.e. circulation) from the installation and based on the received data determines the opening or closing of the mixer (8) thus maintaining the desired temperature at the return of the central heating or central hot water installation by closing the mixer (8), preferably maintaining the minimum flow rate, if the return temperature is higher than the temperature according to the schedule calculated at step d); or opening of the mixer (8) if the return temperature falls below the minimum temperature set in the schedule calculated at step d).
  6. An energy control system for a central heating and/or central hot water system in a building for integration into an existing hot water system in a building, comprising a pump, a mixer, first and second balancing valves, temperature sensors, flow sensors and a central unit, characterised in that the central unit comprises modules configured to perform the steps of the method specified in claims. 1-5, which include: a) A memory and power module; b) A data acquisition module configured to acquire and manage information from the mixer and temperature sensors and to transmit it to the analysis module; c) A database that stores the reference data entered and the measurements and schedules set; d) An analysis module configured to schedule the mixer based on an algorithm, calculating the mixer's operating parameters based on the data provided from the data acquisition module, with at least one algorithm checking the return temperature from the installation in real time and, based on the received data, determining the opening or closing of the mixer (8) thus maintaining the desired temperature at the return of the installation.
  7. The system according to claim 6, characterised in that at least one algorithm of the analysis module in real time checks the temperature of the return from the installation and, based on the received data, determines whether to open or close the mixer (8), thus maintaining the desired temperature at the return of the central heating or central hot water installation by closing the mixer (8), maintaining the minimum flow rate, if the return temperature is higher than the temperature according to the mixer (8) operation schedule; or opening of the mixer (8) if the return temperature drops below the minimum temperature set in the mixer operation schedule (8).
  8. The system according to claim 6 or 7, characterised in that the central unit is provided with means for data transmission to an external server providing remote control and management of the operation of the system via an external device selected from the group comprising a computer, tablet, smartphone.

Description

The object of the invention is a method and a system for controlling energy in a central heating and/or central hot water system, where the housing cooperative/community/owner of the building is not the owner of the heat source. A thermal energy management system these days is crucial for finding savings in a building. Existing thermal systems are only available to the owners of the heat source (owners of boiler houses, district heating centres, heat pumps or mixed systems). This means that many residential or commercial buildings are 'condemned' to the parameters provided by the owner of the heat source. From the state of the art, various systems and methods for managing the energy consumption of a water system are known. In particular, from the Chinese application CN108256711, a method of evaluating the energy saving index system of a district with a central heating boiler is known, which includes the following steps: checking whether the basic data of the boiler plant meets the national basic requirements of environmental protection, safety and equipment; collecting the boiler parameters of the target boiler plant for a whole year and matching the weighted results of the existing evaluation indexes according to the two evaluation indexes of the boiler plant for a whole year; collecting the quality index data of the target boiler plant and obtaining the weighted results of the final quality evaluation index according to the five contents of the quality indexes. collection of the target boiler plant when the boiler is kept in normal operation for a certain period of time, the statistics of the value of the measured data on site according to the five items of the quantitative indicator, the final weighted result of the quantitative indicator is obtained; comprehensive qualitative and quantitative indicators to the comprehensive value of the single target furnace in the boiler plant to obtain the total thermal system result. From the Chinese application CN107358328, a central heating pipe network performance analysis system is known which includes: a master data management unit configured to obtain and manage attribute information of each node type in the central heating pipe network and corresponding related information of each node; a thermal data collection unit configured to collect thermal energy information of each node in the central heating pipe network over a time interval; a performance analysis unit configured to use the attribute information of each node type and the corresponding related information of each node in the master data management unit and combine the thermal energy information of each node in the time interval collected by the thermal data collection unit to obtain the unit energy consumption of the heat rate of each node; and a threshold setting unit configured to set the performance threshold of each node type and combine the unit energy consumption and heat rate obtained by the performance analysis unit to determine the performance status of each node. From the Chinese application CN108428040, an integrated Internet of Things application system for central heating is known. The disclosed system comprises a data collection system, a production safety monitoring system and a heat measurement management service platform, and both the data collection system and the production safety monitoring system are connected to the heat measurement management service platform. The data collection system includes a heat meter and an LSN sensor network, which are connected to each other; the production safety monitoring system includes a heating equipment management system, an intelligent inspection recording instrument, a production environment monitoring and alarm system and a transmission network, and the heating equipment management system, the intelligent inspection recording instrument and the production environment monitoring and alarm system are connected to the transmission network; and the heat measurement management service platform includes a query statistics system, an energy efficiency analysis system and an energy saving management system. The aforementioned system is an application of Internet of Things (IoT) technology to the central heating system, and as a result, heating efficiency and quality are improved, the risk of production safety accidents is reduced, and heating energy consumption is reduced. From the Chinese application CN115471052, the method of intelligent regulation and control of the heat exchange station is known, which includes the following steps: acquiring the heat supply temperature and water flow data of each household in the current region together with the weather and temperature in the past five years; the average heating temperature of each household is calculated by removing incorrect data under different weather conditions and temperatures each year. According to the revealed method of intelligent regulation and control of the heat exchange station, the