SE545541C2 - Device and a method related to control of a heating source - Google Patents
Device and a method related to control of a heating sourceInfo
- Publication number
- SE545541C2 SE545541C2 SE2151525A SE2151525A SE545541C2 SE 545541 C2 SE545541 C2 SE 545541C2 SE 2151525 A SE2151525 A SE 2151525A SE 2151525 A SE2151525 A SE 2151525A SE 545541 C2 SE545541 C2 SE 545541C2
- Authority
- SE
- Sweden
- Prior art keywords
- value
- water temperature
- flow water
- heating source
- increases
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 200
- 230000007423 decrease Effects 0.000 claims description 23
- 230000005855 radiation Effects 0.000 description 14
- 239000007983 Tris buffer Substances 0.000 description 5
- 238000004590 computer program Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- SDWKXMBJXPQCJU-UHFFFAOYSA-N 3,5-dimethyl-1,3,5-oxadiazinane-4-thione Chemical compound CN1COCN(C)C1=S SDWKXMBJXPQCJU-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- FPGGTKZVZWFYPV-UHFFFAOYSA-M tetrabutylammonium fluoride Chemical compound [F-].CCCC[N+](CCCC)(CCCC)CCCC FPGGTKZVZWFYPV-UHFFFAOYSA-M 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/156—Reducing the quantity of energy consumed; Increasing efficiency
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/176—Improving or maintaining comfort of users
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
- G05D23/192—Control of temperature characterised by the use of electric means characterised by the type of controller using a modification of the thermal impedance between a source and the load
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/258—Outdoor temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/265—Occupancy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Remote Sensing (AREA)
- General Induction Heating (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Control Of Heat Treatment Processes (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The present disclosure relates to a device, a method and a computer software adapted to provide a temperature value to a heating source. The device 200 is adapted to provide a determined flow water temperature value TFDET to a flow water temperature sensor input to a heating source. Wherein the device is adapted to be connectable to a flow water temperature sensor adapted to determine the actual flow water temperature TFAC from the heating source. The device 200 comprising: a processor 210; and a memory 220 storing software instructions that, when executed by the processor 210, cause the device 200 to retrieve the actual flow water temperature value TFAC from the flow water temperature sensor. The instructions further cause the device to determine a ΔTF value based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source 110 is required to maintain an indoor temperature of the building. The ΔTF value is based on the outdoor temperature value Touisuch that the ATF value increases when the outdoor temperature increases. Further the instructions cause the device to determine the determined flow water temperature value TFDET by adding the actual flow water temperature value TFAcand the ΔTF value. Yet further, the instructions cause the device to provide the determined flow water temperature value TFDET to the flow water temperature sensor input.
Description
DEVICE AND A l\/IETHOD RELATED TO CONTROL OF A HEATING SOURCE.
Technical Field
The present disclosure relates to a method, a device and computer software adapted to provide a
temperature value to a heating source.
Background
The indoor temperature in a building is affected by the energy that is supplied to the building and the energy losses from the building. Energy is often supplied to the building via a heating system. Energy is also provided to the building via indirect energy sources such as heat from people, electric appliances,
solar radiation, etc.
The energy that leaves the building as transmission losses and ventilation losses is dependent on the difference between the indoor temperature and the outdoor temperature. The transmission losses are also dependent on the building's insulating shell (exterior walls, windows, doors, etc.). The ventilation losses depend on the airflow and the air infiltration through the building. The ventilation losses further depend on the temperature of the air leaving the building. The actual temperature of the air leaving a
building is almost the same as the indoor temperature if no ventilation heat exchanger is used.
ln order to keep the indoor temperature constant, the supplied amount of energy must match the
amount of energy that disappears from the building.
Therefore, there is a need for precise control of the heating system in order for the heating system to
supply the correct amount of energy to keep the indoor temperature constant.
The heating system often provides energy to the building via heated water supplied to a radiator system.
The temperature of the heated water is determined based on the outdoor temperature. The
temperature of the heated water is often determined based on a heating curve.
However, it is often hard to adapt the correct heating curve to different buildings and the amount of
indirect energy sources such as people, electric appliances, solar radiation, etc.
Thus, there is a need for a solution that solves or at least mitigates the problem of adapting a heating system to the amount of indirect energy sources such as from people, electric appliances, solar radiation,
etC.
Summary
Accordingly, it would be desirable to provide a device, a method, and computer software, which provide a temperature value to a heating source that takes into account various parameters relating to the
outdoor temperature.
This is achieved by determining a temperature value based on an actual water temperature, an outdoor temperature and a balance temperature of the building, and providing the determined temperature value to a sensor input of the heating source. The heating source can then use this input value to provide hot water to the radiator system. To address one or more of these concerns a device and a method as defined in the independent claims are provided. Preferred embodiments are defined in the dependent
claims.
According to a first aspect, the present disclosure relates to a device adapted to provide a determined flow water temperature value TFDET to a flow water temperature sensor input to a heating source. The device is adapted to be connectable to a flow water temperature sensor adapted to determine the actual flow water temperature TFAC from the heating source. The device comprising: a processor; and a memory storing software instructions that, when executed by the processor, cause the device to retrieve the actual flow water temperature value TFAC from the flow water temperature sensor. The software instructions further cause the device to determine a ATFvalue based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source is required to maintain an indoor temperature of the building. The AT; value is based on the outdoor temperature value ToUTsuch that the AT; value increases when the outdoor temperature increases_ Further, the software instructions cause the device to determine the determined flow water temperature value TFDET by adding the actual flow water temperature value TFAC and the ATFvalue. Yet further, the instructions cause the device to provide the determined flow water
temperature value TFDETto theflow water temperature sensor input.
Thus according to the first aspect, the device provides an inventive solution to the concerns described above by providing a determined flow water temperature va|ue.The determined flow water temperature value is determined based on an outdoor temperature value until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source is required to maintain an indoor temperature of the building. The ATFvalue is based on the outdoor temperature value ToUTsuch that the AT; value increases when the outdoor temperature increases_ Therefore, it is possible for the heating source to consider energy from other energy sources such as solar radiation, electrical appliances, people, etc. when determining the temperature of the flow water from the heating source. This since the heating source is provided with the determined flow water temperature value, which has been determined considering at least the balance temperature and the
outdoor temperature.
The device according to the disclosure therefore provides an improved determination of the flow water temperature based on the outdoor temperature. This is because, when using the device, the building's balance temperature is also taken into account during the determination of the flow water temperature from the heating source. When the outdoor temperature changes, the ratio between the energy from the heating source and energy from other sources changes. Therefore, energy from solar radiation, electrical appliances, people, etc. will constitute a larger part of the building's total energy need when
the outdoor temperature is higher.
Therefore, according to an exemplary embodiment of the present disclosure the ATFvalue increases when the outdoor temperature increases until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source is required to maintain an indoor
temperature of the building.
According to one embodiment, the software instructions further cause the device to determine the AT; based on a difference value TTDWF between a set indoor temperature value TSETand an actual indoor temperature TACT,TTD|FF= TSET- TACT. Such that the AT; value increases when the difference value TTDWF
increases and such that the ATFvalue decreases when the difference value Tmppdecreases.
According to one embodiment, the software instructions further cause the device to determine the AT;
value based on a difference value TWDWF between the actual flow water temperature TFACand a return
water temperature value TR,TWD|FF= TFAC- TR, Such that the AT; value increases when the difference value
TWDWF increases and such that the AT; value decreases when the difference value TWDWF decreases.
According to one embodiment, the software instructions further cause the device to determine the AT;
based on determining the ATFvalue according to the formula (a):
(ä) ATP = (TFAc _ TR) X (TsET _ TActl/ (TBAL- TouT), Whefeln
TFAC = actual flow water temperature
TR= return water temperature
T5ET= set indoor temperature
TACT= actual indoor temperature
TBAL= balance temperature of the building
T0UT= outdoor temperature
The heating source may use the determined flow water temperature value TFDETto control the actual flow water temperature TFAC from the heating source. ln a case were the determined flow water temperature value TFDETis higher than the actual flow water temperature the heating source will lower the flow water temperature. Therefore, providing less energy to the building, which is a desired effect since when the outdoor temperature increases energy from people; electrical appliances etc. constitute
a larger part of the building total energy need.
”c “rdšng t m rnhodïnßht, *The flow water temperature from the heating source tis-may' be determined based on the outdoor temperature value TOUT such that the flow water temperature TF increases when the outdoor temperature value TOUT decreases and such that the flow water temperature
TFdecreases when the outdoor temperature value Tour increases.
The heating source šsrnay' be a heat pump, a boiler, or a heat
exchanger.
According to a second aspect, the present disclosure relates to method for providing a determined flow
water temperature value TFDET to a flow water temperature sensor input to a heating source. The
method is performed by a device adapted to be connectable to a flow water temperature sensor. The flow water temperature sensor is adapted to determine the actual flow water temperature TFAC, from the heating source. The method comprising a first step of retrieving the actual flow water temperature value TFAC from the flow water temperature sensor. Next a step of, determining a AT; value based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source is required to maintain an indoor temperature of the building. The ATFvalue is based on the outdoor temperature value TOUT such that the AT; value increases when the outdoor temperature increases_ Further, the method comprises a step of determining the determined flow water temperature value TFDET by adding the actual flow water temperature value TFACand the AT; value. Next, the method comprises a step of providing the
determined flow water temperature value TFDETto theflow water temperature sensor input.
Objectives, advantages and features conceivable within the scope of the second aspect are readily
understood by the foregoing discussion referring to the first aspect.
Further objectives, features and advantages of the present disclosure will become apparent when studying the following detailed description, the drawings and the appended claims. Those skilled in the art realize that different features of the present disclosure can be combined to create embodiments
other than those described in the following.
BRIEF DESCRIPTION OF DRAWINGS
The invention will be described in the following illustrative and non-limiting detailed description of
exemplary embodiments, with reference to the appended drawings, in which:
Figure 1 is a schematic illustration of a heating system, in which a device 200 according to an exemplary
embodiment is connected.
Figure 2 is a schematic illustration of the device 200 according to an exemplary embodiment.
Figure 3 is a flow chart ofa method according to an exemplary embodiment.
Figure 4 is a diagram illustrating the flow water temperature in relation to the outdoor temperature.
All figures are schematic, not necessarily to scale and generally only show parts, which are necessary in
order to elucidate the invention, wherein other parts may be omitted or merely suggested.
DETAILED DESCRIPTION
Embodiments of the invention will now be described with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The terminology used in the detailed description of the particular embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. ln the drawings, like numbers
refer to like elements.
Figure 1 illustrates a block diagram of a heating system 100, to which a device 200 according to an exemplary embodiment of the present disclosure can be connected. The heating system 100 comprises a heating source 110. The heating source 110 may be of many different types, for example a heat pump, a boiler or a heat exchanger 110. The heating source 110 adds energy to a building 120 by supplying heated water via flow water pipe 130 to the building's radiator system 140. The heated water returns to
the heating source 110 via a return water pipe
The heating system 100 comprises a flow water temperature sensor 160 adapted to determine the actual flow water temperature TFAC of water supplied from the heating source 110. ln a heating system according to the prior art, the flow water temperature sensor 160 is directly connected to a flow water temperature sensor input 170 of the heating source 110. Thus, in prior art systems, the heating source is provided with the actual flow water temperature. The balance temperature is thus not considered in
prior art control of heating sources based on flow water temperature.
ln the heating source 110, the flow water temperature TF from the heating source 110 is determined based on the outdoor temperature TOUT. The flow water temperature TF is often determined based on a
heating curve that determines the flow water temperature TF for different outdoor temperatures TOUT.
The heating curve often plots the outdoor temperature Tout on the X-axis against the flow water temperature TF on the Y-axis. A heating curve is provided where the outdoor temperature decreases,
the flow water temperature increases.
Using the heating curve, in the heating system 100, the heating source 110 determines the flow water temperature TF based on the outdoor temperature. I order the heating source to control that the correct flow water temperature TF is provided, the heating source is provided with the flow water temperature. ln prior art, the flow water temperature is directly provided from a flow water temperature sensor. According to an exempla ry embodiment, the determined flow water temperature TFDFF is provided to the heating source. Thereby, enabling the heating source to consider the balance temperature of the
building, when controlling the flow water temperature.
However, the inventor has realized that an improved determination of the flow water temperature TF is obtained if the flow water temperature TF is also determined based on the building's balance
temperature.
A building's balance temperature is a generally known temperature concept. The balance temperature is the outdoor temperature at which no energy from the heating source is required to maintain an indoor temperature of the building. At the balance temperature, the building is able to maintain the desired indoor temperature with the energy provided from solar radiation, electrical appliances, people, etc. in
the building.
A building's energy need constitutes the difference between the outdoor temperature and a desired indoor temperature. This energy need is supplied by solar radiation, electrical appliances, people, etc. and, if necessary, a hearing system. lf the outdoor temperature is sufficiently high (i.e., equal to or above
the balance temperature), no energy from the heating system is needed.
When the outdoor temperature is lower than the balance temperature, the energy from solar radiation, electrical appliances, people, etc. is not sufficient for the building to reach the desired indoor temperature. Therefore, energy from the heating system is needed to make up the deficit. As the outdoor temperature approaches the balance temperature, the energy from solar radiation, electrical
appliances, people, etc. constitutes a larger proportion of the building's energy need.
ln so-called zero-energy houses or near zero-energy houses, the energy provided by people, electrical appliances, solar radiation, etc. provides the entire energy contribution to the building. This means that
heating systems become redundant for these types of buildings.
The inventor has realized that one way of taking the energy from solar radiation, electrical appliances, people, etc. into account is to adjust an actual flow water temperature value that is provided to the
heating source
Further, the inventor has realized that one way of adjusting the actual flow water temperature value is to connect a device 200 between the flow water temperature sensor 160 and the flow water temperature sensor input 170 to the heating source 110. The device 200 is adapted to provide a determined flow water temperature value TFDET to the flow water temperature sensor input 170 of the
heating source 110, instead of the actual flow water temperature value.
The device 200 therefore provides a low-cost solution that can be easily installed in an existing heating
system 100. Further, only minor modification of the existing heating system 200 is required.
Figure 2 illustrates a block diagram ofan exemplary embodiment of the device 200 adapted to provide a determined flow water temperature value TFDET to a flow water temperature sensor input of the heating source 110. The device 200 comprises a processor 210. The device 200 further comprises a memory 220 containing instructions executable by the processor 210, that when executed by the processor 210 cause the device 200 to retrieve the actual flow water temperature value TFAC from the flow water temperature sensor 160. The instructions further cause the device 200 to determine a ATF value based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source 110 is required to maintain an indoor temperature of the building. The ATFvalue is based on the outdoor temperature value TOUT such that the AT; value increases when the outdoor temperature increases, Further, the instructions cause the device 200 to determine the determined flow water temperature value TFDET by adding the actual flow water temperature value TFACand the AT; value. Yet further, the instructions cause the device 200 to provide
the determined flow water temperature value TFDET to theflow water temperature sensor input
Therefore, by determining the determined flow water temperature value TFDET based on the outdoor
temperature TOUT, it is possible to take the energy from solar radiation, electrical appliances, people, etc.
into account when controlling the flow water temperature TF. This is because, when using the device
200, the building's balance temperature will also influence the control of the flow water temperature TF.
As mentioned above, in prior art systems, the heating source is provided with the flow water temperature. Therefore, in prior art the flow water temperature is directly provided from a flow water temperature sensor. lnstead, according to an exemplary embodiment, the determined flow water temperature TFDET is provided to the heating source. Thereby, enabling the heating source to consider
the balance temperature of the building, when controlling the flow water temperature.
When the outdoor temperature changes, the ratio between the energy from the heating source and energy from other sources changes. Therefore, energy from solar radiation, electrical appliances, people, etc. will constitute a larger part of the building's total energy need when the outdoor temperature is
higher.
Therefore, according to an exemplary embodiment of the present disclosure, the AT; value is based on the outdoor temperature value TOUT such that the ATFvalue increases when the outdoor temperature increases. ln an exemplary embodiment, the ATFvalue increases until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source 110 is required to
maintain an indoor temperature of the building.
ln another exemplary embodiment, the instructions further cause the device 200 to determine a AT; value based on a difference value TTDWF between a set indoor temperature value TSETand an actual indoor temperature TAcpsuch thatTTD|FF= TSET- TACT. ln one exempla ry embodiment, the AT; value increases when the difference value Tmppincreases and the AT; value decreases when the difference value TTDWF
decreases.
By also determining, the determined flow water temperature value TFDET based on a difference value TTmFF between a set indoor temperature value Tsnand an actual indoor temperature TAcT. lt is possible to influence the heating source 110 control of the flow water temperature by a difference value TTDW Where TTDWF is a difference value between a set indoor temperature value TSET and an actual indoor
temperature TACT.
The higher the set indoor temperature Tsnis compared to the actual indoor temperature TAcT, the higher the ATFvalue will be. ln the case that the set indoor temperature TSETis higher than the actual indoor
temperature, TACT, the ATFvalue will be positive. This will cause the heating source 110 to provide a
higher flow water temperature TR compared to the case where the set indoor temperature TSETis lower
than the actual indoor temperature TACR
ln another exemplary embodiment, the instructions further cause the device 200 to determine a ATR value based on a difference value TWDRR between the actual flow water temperature TRACand a return water temperature value TR, such thatTWD|RR= TRAC- TR. ln this embodiment, the ATRvalue increases when
the difference value TwmFF increases. The AT; value decreases when the difference value TwmFF decreases.
Therefore, by determining the determined flow water temperature value TRDET based on a difference value TWDRR between the actual flow water temperature TRACand a return water temperature value TR, it is possible to influence the heating source 110 control of the flow water temperature by a difference value
TWDRR between the actual flow water temperature TRAC and a return water temperature value TR_
The higher the return water temperature value TR is compared to the flow water temperature TRAC the lower the ATRvalue will be. Therefore, the heating source 110 will be influenced to a lower extent when the return water temperature value TR is closer to the flow water temperature TF. ln the case that the return water temperature value TR is relatively close to the actual flow water temperature TRAC, the ATR value will be low compared to the case where the return water temperature value TR is relatively far
from the actual flow water temperature TRAC.
Therefore, the heating source 110 is influenced largely and provides a higher flow water temperature TR when the difference value TWDRR between the actual flow water temperature TRACand the return water
temperature value TRis high, compared to the case where the difference value TWDRR is lower.
ln yet another embodiment of the device 200, the software instructions further cause the device 200 to
determine the ATR value according to formula (a):
(a) ATP = (TFAc _ TR) X (TsET _ TAcfl/(TBAL _ TouT), Whefelfl TRAC= actual flow water temperature TR= return water temperature T5ET= set indoor temperature TACT= actual indoor temperature
TBAL= balance temperature of the buildingT0UT= outdoor temperature
ln yet another embodiment of the device 200, the software instructions further cause the device 200 to
determine the AT; value according to formula (b):
(b) (TFDET _ TRDET) = (TFAc _ TR) X (TBAF TouT+TTD|FF)/ (TBAL _ Tout) TTD|FF = (TsET _ TAcT) ATP = (TFDET _ TRDET) ' (TFAc _ TR)
The expression (TFDET- TRDET) is the calculated value for the difference between TF and TR and does not denote the individual values on TF or TR. The heating source may use the determined flow water temperature value TFDETto determine the actual
flow water temperature TFAC from the heating source.
ln one exemplary embodiment, the device 200 is arranged on a single printed circuit board (PCB).
ln one exemplary embodiment, the PCB is smaller than 30*15 mm, thus allowing the PCB to be arranged in the heating source 210. According to one exemplary embodiment, the device is supplied with power from the heating source 210. Therefore, the device 200 does not need any further power supply in addition to the power supply from the heating source 210. ln another exemplary embodiment, the device 200 has a contact for allowing connection of a computing device in order to update and/or modify the software instructions in the device 200. ln another exemplary embodiment, the balance temperature of the device can be set via the contact. ln another exemplary embodiment, the balance temperature of the device can be set via a wireless interface to the device 200. Therefore, it possible to set the balance temperature of the device 200 after the device has been installed. ln some embodiments, the balance temperature may be adapted based on the number of people in the building. ln another exemplary embodiment, the balance temperature is adapted based the amount of solar radiation. ln other exemplary embodiments, the balance temperature may be adapted based on other
factors that affect the balance temperature.
ln yet another embodiment of the device 200, the actual flow water temperature TFAC from the heating
source is determined based on the outdoor temperature value TOUT such that the flow watertemperature increases when the outdoor temperature value TOUT decreases, and such that the flow
water temperature decreases when the outdoor temperature value TOUT increases.
ln one exemplary embodiment, the flow water temperature TFfrom the heating source is determined based on a heating curve. ln one exemplary embodiment, the outdoor temperature TOUTis determined based on a |inear equation for the heating curve. According another exemplary embodiment, TOUT can be
replaced with an expression related to a |inear equation for a heating curve.
ln one exemplary embodiment, TOUTis received from an outdoor temperature sensor.
Referring to figure 4, in another exemplary embodiment the outdoor temperature TOUT is determined
according to the expression:
Tout x = (TFX- lVll/K,
Where l<= (TF |v|Ax _ TF ivuNl/ (TDoT _ T BAL) and lVl= THvnN _ K X TBAL
Or
lVl= TFMA><_ K X TDoT
TDOT is the statistic coldest outdoor temperature that the heating source 100 is dimensioned for.
Referring to figure 4, the outdoor temperature can also be determined in terms of the following
expression.
TouTx= TBAL _ (TBAL _ TDoT) ATFR x /ATFRMAX
Where ATFRmax = (TFMAX ' TRMAX)
Referring back to figure 2, when the device 200 comprise a processor 210, the processor 210 is a central processing unit, CPU, microcontroller, digital signal processor, DSP, or any other suitable type of
processor capable of executing computer program code. The memory 220 is a random-access memory,RAM, a read-only memory, ROM, or a persistent storage, e.g. a single or combination of magnetic
memory, optical memory, or solid-state memory or even remotely mounted memory.
According to one embodiment, the disclosure further relates to the above mentioned computer program, comprising computer readable code which, when run on the device 200 causes the deviceto perform any of the embodiments of the disclosure described herein.
The present disclosure also relates to a computer-readable storage medium, having stored there on a computer program which, when run in the device 200, causes the device 200 to operate as described
a bove.
According to one embodiment, the disclosure further relates to the above mentioned computer program, comprising computer readable code which, when run on the device 200, causes the deviceto perform any of the embodiments of the disclosure described herein.
According to one embodiment of the disclosu re, the processor 210 comprises:
- a retrieving module 211 adapted retrieve the actual flow water temperature value TFAc from the flow water temperature sensor;
- a first determining module 212 adapted to determine a ATFvalue based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source (110) is required to maintain an indoor temperature of the building, the ATFvalue is based on the outdoor temperature value ToUTsuch that the ATFvalue increases when the outdoor temperature increases,-
- a second determining module 213 adapted to determine the determined flow water temperature value TFDETby adding the actual flow water temperature value TFAcand the ATFvalue;
- a providing module 214 adapted to provide the determined flow water temperature value TFDETto
theflow water temperature sensor input.
The modules 211, 212, 213 and 214 are implemented in hardware or in software or in a combination thereof. According to one embodiment, the modules 211, 212, 213 and 214 are implemented as a computer program stored in the memory 220, which run on the processor 210. The device 200 is further
configured to implement all the embodiments of the disclosure as described herein.FIG. 3 illustrates a flow chart of a method 300 for providing a determined flow water temperature value TFDET to a flow water temperature sensor input to a heating source. The method is performed by the device 200 adapted to be connectable to a flow water temperature sensor. The flow water temperature sensor is adapted to determine the actual flow water temperature TFAC from the heating source. ln a first step 310, the method begins with retrieving the actual flow water temperature value TFAC from the flow water temperature sensor. ln step 320, the method determines a ATFvalue based on an outdoor temperature value Tom, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source 110 is required to maintain an indoor temperature of the building. The ATFvalue is based on the outdoor temperature value TOUT such that the AT; value increases when the outdoor temperature increases_
ln step 330, the determined flow water temperature value TFDETis determined by adding the actual flow water temperature value TFACand the ATFvalue. ln step 340, the method provides the determined flow
water temperature value TFDETto theflow water temperature sensor input.
As such, the method provides an inventive solution to the concerns described above, by providing a determined flow water temperature value TFDET to a flow water temperature sensor input of a heating source. Since the method influence the flow water temperature value, it is possible to obtain an
improved control of the flow water temperature TF from the heating source.
According to one exemplary embodiment, the step of determining the ATFvalue further comprises determining the AT; value based set indoor temperature value TSETand an actual indoor temperature TAcT, such thatTTD|FF= TsET- TAcT. ln this embodiment, the ATFvalue increases when the difference value
TTDWF increases and such that the AT; value decreases when the difference value TTDWF decreases.
Therefore, it is possible to influence the heating source 110 control of the flow water temperature based on a difference value TTDWF between a set indoor temperature value TSETand an actual indoor
temperatu fe TAcTfl-TDHIF: T5ET- TACT
The higher the set indoor temperature TSETis compared to the actual indoor temperature TACT, the higher the ATFvalue will be. This causes the heating source to provide a lower flow water temperature TF compared to the case where the set indoor temperature TSETis lower than the actual indoor temperature
TAcT.
ln another exemplary embodiment of the method, a ATRvalue is determined based on a difference value TWDRR between the actual flow water temperature TRAC and a return water temperature value TR, such that TWD|RR= TRAC- TR, such that the ATR value increases when the difference value TWDRR increases and the ATR
value decreases when the difference value TWDRR decreases.
Therefore, it is possible to influence the heating source 110 control of the flow water temperature TR based on a difference value.Where the difference value TwmFF is a difference between the actual flow
water temperature TRAcand the return water temperature value TR_
The higher the return water temperature value TRis compared to the flow water temperature TRAC, the
lower thedifference valueTWDRR will be. A lower difference value TWDRR gives a lowerATR.
Therefore, the heating source 110 is influenced to a lower extent when the return water temperature value TRis higher. ln case the return water temperature value TRis relatively close to the actual flow water temperature TRAC, the ATRvalue will be low compared to the case where the return water
temperature value TRis relatively far from the actual flow water temperature TFAc.
Furthermore, the heating source 110 is influenced to larger extent when the difference value TWDRR between the actual flow water temperature TRACand the return water temperature value TR is high
compared to the case where the difference value TTDRR is lower.
According to yet another exemplary embodiment, the step of determining the ATRvalue further
comprises determining the ATR value according to the formula (a):
(a) ATP = (TFAc _ TR) X (TsET _ TAcfl/ (TBAL _ TouT), Whefelfl
TRAC= actual flow water temperature
TR= return water temperature
T5ET= set indoor temperature
TACT= actual indoor temperature
TRAL= balance temperature of the building
T0UT= outdoor temperatureAccording to yet another exemplary embodiment, the step of determining the ATFvalue further
comprises determining the ATFvalue according to the formula (b):
(b) (TFDET _ TRDET) = (TFAc _ TR) X (TBAL_ Tout +TTD|FF)/ (TBAL _ Tout) TTD|FF = (TsET _ TAcT)
ATP = (TFDET _ TRDET) ' (TFAc _ TR)
The heating source may use the determined flow water temperature value TFDETto control the actual
flow water temperature TFAC from the heating source.
Further,, the low water temperature TFAC from the heating source may be determined based on the outdoor temperature value TOUT such that the flow water temperature TFAC increases when the outdoor temperature value TOUT decreases, and such that the actual flow water temperature TFACdecreases when
the outdoor temperature value TOUT increases.
The heating source may be a heat pump.
ln the claims, the word ”comprising” does not exclude other elements or steps and the indefinite article ”a” or ”an” does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to
advantage. Any reference signs in the claims should not be construed as limiting the scope of the claims.
Claims (9)
- Claims A device (200) adapted to provide a determined flow water temperature value TFDET to a flow water temperature sensor input (170) to a heating source (110) of a building, wherein the device (200) is adapted to be connectable to a flow water temperature sensor (160) adapted to determine the actual flow water temperature TFAcfrom the heating source (110), the device (200) comprising: a processor (210); and a memory (220) storing software instructions that, when executed by the processor (210), cause the device (200) to: - retrieve the actual flow water temperature value TFAC from the flow water temperature sensor (160), - determine a ATFvalue based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source (110) is required to maintain an indoor temperature of the building, the ATFvalue is based on the outdoor temperature value Tour such that the ATFvalue increases when the outdoor temperature increases,- - determine the determined flow water temperature value TFDET by adding the actual flow water temperature value TFACand the ATFvalue; and - provide the determined flow water temperature value Tmnto theflow water temperature sensor input (170). The device (200) according to claim 1, wherein the software instructions further cause the device (200) to determine the AT; based on a difference value TTDWF between a set indoor temperature value TSETand an actual indoor temperature TACT,TTD|FF= TSET- TACT, such that the ATFvalue increases when the difference value TTDWF increases and such that the AT; value decreases when the difference value TTmFFdecreases. The device (200) according to any of claims 1 to 2, wherein the software instructions further cause the device (200) to determine the ATFvalue based on a difference value TWDWF between the actual flow water temperature TFAC and a return water temperature value TR,TWD|FF= TFAc- TR, such that the AT;value increases when the difference value TWD|;; increases and such that the AT; value decreases when the difference value TWD|;; decreases. The device (200) according to claim 3, wherein the software instructions further cause the device (200) to determine the AT; value according to the formula (a): (a) ATP = (TFAc _ TR) X (TsET _ TAcT)/ (TBAL _ Tout) A method for providing a determined flow water temperature value T;D;; to a flow water temperature sensor input (170) to a heating source (110) of a building, wherein the method is performed by a device (200) adapted to be connectable to a flow water temperature sensor (160) adapted to determine the actual flow water temperature T;AC from the heating source (110), the method comprising the steps of: - retrieving (310) the actual flow water temperature value TFAc from the flow water temperature sensor (160), - determining (320) a AT;value based on an outdoor temperature value TOUT, until the outdoor temperature reaches a balance temperature TBAL of the building, at which no energy from the heating source (110) is required to maintain an indoor temperature of the building, the AT;value is based on the outdoor temperature value TOU; such that the AT; value increases when the outdoor temperature increases, - determining (330) the determined flow water temperature value T;D;; by adding the actual flow water temperature value T;Acand the AT;value; - providing (340) the determined flow water temperature value T;D;; to the flow water temperature sensor input (170). The method according to claim 5, wherein the step of determining the AT;value further comprises determining the AT; based on a difference value T;D|;; between a set indoor temperature value T_<,;; and an actual indoor temperature TAC;,T;D|;;= T5;;- TACT, such that the AT; value increases when the difference value T;D|;; increases and such that the AT; value decreases when the difference value T;D|;;decreases. The method according to any of claim 5 or 6, wherein the step of determining the ATpvalue further comprises determining the ATpvalue based on a difference value TWDWF between the actual flow water temperature TFAC and a return water temperature value TR,TWD|FF= TFAC- TR, such that the ATpvalue increases when the difference value TWDWF increases and such that the AT; value decreases when the difference value TWmFF decreases. The method according to aaflfææflclaims-åèe-I wherein the step of determining the ATpvalue further comprises determining the ATpvalue according to the formu|a (a): (a) ATP = (TFAc _ TR) X (TsET _ TAcT)/ (TBAL _ TouT) Computer readable storage medium comprising computer readable code which, when run in processor 210 of the device 200, causes the device 200 to perform the method of any of c|aimsto 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2151525A SE545541C2 (en) | 2021-12-14 | 2021-12-14 | Device and a method related to control of a heating source |
| PCT/EP2022/083286 WO2023110363A1 (en) | 2021-12-14 | 2022-11-25 | Device and a method related to control of a heating source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2151525A SE545541C2 (en) | 2021-12-14 | 2021-12-14 | Device and a method related to control of a heating source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2151525A1 SE2151525A1 (en) | 2023-06-15 |
| SE545541C2 true SE545541C2 (en) | 2023-10-17 |
Family
ID=84487626
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| SE2151525A SE545541C2 (en) | 2021-12-14 | 2021-12-14 | Device and a method related to control of a heating source |
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| SE (1) | SE545541C2 (en) |
| WO (1) | WO2023110363A1 (en) |
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| CH698872B1 (en) * | 2007-08-09 | 2009-11-30 | Markus Brueckner | Method for determining a target flow temperature for regulating hot water heating in a building. |
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Also Published As
| Publication number | Publication date |
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| SE2151525A1 (en) | 2023-06-15 |
| WO2023110363A1 (en) | 2023-06-22 |
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