Building heating system

Abstract

A building heating system, including for heating water, such as tap water and/or utility water, of a building water system. The embodiments also relate to a kit of part to realize such a building heating system. The embodiments further relate to a method for controlling the building heating system.

1 . Building heating system, comprising:
 at least one air source heat pump configured to transfer heat from air to a working fluid conducted through a working fluid line,   wherein said working fluid line comprises at least two auxiliary heat sources configured to heat said working fluid during flow-through of said working fluid, wherein each of said auxiliary heat sources is, directly or indirectly, connected or connectable to said heat pump, and wherein said working fluid line is connected or connectable to at least one water heat exchanger for transferring heat from said working fluid to water conducted through at least one water line of a building water system,   at least one temperature sensor configured to measure the temperature of the working fluid and/or water conducted through at least one water line,   at least one control unit connected or connectable to said at least one temperature sensor, wherein said control unit is configured to control the auxiliary heat sources based upon the temperature detected by said at least one temperature sensor.   
     
     
         2 . Heating system according to  claim 1 , wherein the control unit is configured to individually control the auxiliary heat sources and optionally the heat pump based upon the temperature detected by said at least one temperature sensor. 
     
     
         3 . Heating system according to  claim 1 , wherein the system comprises a plurality of temperature sensors connected or connectable to said control unit, wherein at least one working fluid temperature sensor is configured to measure the temperature of the working fluid downstream of the heat pump and an upstream side of the auxiliary heat sources, and wherein at least one other working fluid temperature sensor is configured to measure the temperature of the working fluid downstream of the auxiliary heat sources. 
     
     
         4 . Heating system according to  claim 1 , wherein the system comprises a plurality of temperature sensors connected or connectable to said control unit, wherein at least one working fluid temperature sensor is configured to measure the temperature of the working fluid, and wherein at least one water temperature sensor is configured to measure the temperature of water of conducted through at least one water line of the building water system. 
     
     
         5 . Heating system according to  claim 1 , wherein the heating system comprises a plurality of water temperature sensors connected or connectable to said control unit, wherein at least one water temperature sensor is configured to measure the temperature of water of conducted through at least one first water line, and wherein at least one other water temperature sensor is configured to measure the temperature of water of conducted through at least one second water line. 
     
     
         6 . Heating system according to  claim 1 , wherein at least two auxiliary heat sources are positioned at a downstream side of the heat pump and an upstream side of the at least one heat exchanger. 
     
     
         7 . Heating system according to  claim 1 , wherein at least two auxiliary heat sources are connected in parallel orientation in the working fluid line, and wherein the sum of diameters of the parallel auxiliary heat sources is larger than a diameter of an adjacent conduit of the working fluid line. 
     
     
         8 . Heating system according to  claim 1 , wherein at least one auxiliary heat source is an induction auxiliary heat source, wherein said induction auxiliary heat source is connected or a connectable to an alternating current source. 
     
     
         9 . Heating system according to  claim 1 , wherein the control unit is configured to individually switch on and off the auxiliary heat sources and/or one or more parts of a auxiliary heat source, dependent on one or more temperature values measured by one or more temperature sensors. 
     
     
         10 . Heating system according to  claim 1 , wherein the system comprises at least one water temperature sensor configured to measure the temperature of water conducted through at least one first water line, wherein the control unit is configured to switch on at least one auxiliary heat source in case the measured water temperature is below a first threshold value and simultaneously or successively to switch on at least one further auxiliary heat source in case the measured water temperature is below a second threshold value, wherein said second threshold value is lower than said first threshold value. 
     
     
         11 . Heating system according to  claim 1 , wherein the heat pump comprises a housing, wherein at least two auxiliary heat sources are connected to said housing and/or are accommodated within said housing. 
     
     
         12 . Heating system according to  claim 1 , wherein the working fluid line comprises at least one storage container for storing heated working fluid, wherein a part of at least one water line is guided through said storage container for preheating water by said working fluid within said storage container. 
     
     
         13 . Heating system according to  claim 1 , wherein the system comprises a plurality of separated water lines of the building water system, wherein each of at least two water lines are connected to at least one water heat exchanger for heating water by the working fluid. 
     
     
         14 . Heating system according to  claim 1 , wherein at least one auxiliary heat source is formed by a heat source chosen from the group consisting of: a solar heater, a geothermal heater, and an additional heat pump. 
     
     
         15 . Heating system according to  claim 1 , wherein the at least one auxiliary heat source is formed by an electrical heating tube. 
     
     
         16 . Heating system according to  claim 1 , wherein at least two auxiliary heating sources are connected in series in the working fluid line. 
     
     
         17 . Heating system according to  claim 1 , wherein multiple auxiliary heating sources are integrated into a single heating tube to form different controllable heating sections of said heating tube. 
     
     
         18 . Heating system according to  claim 1 , wherein the system comprises at least one water temperature sensor is configured to measure the temperature of water of conducted through at least one first water line as well as at least one flow sensor to measure the flow of water through said first water line, wherein control unit is configured to switch on at least one auxiliary heat source in case the measured water temperature is below a temperature threshold value and/or in case the measured water flow exceeds a flow threshold value, and wherein the control unit is further configured to simultaneously or successively to switch on at least one further auxiliary heat source in case the measured water flow exceeds a predefined, period of time and/or in case the measured temperature increase over a predefined period of time remains below a temperature threshold value. 
     
     
         19 . Kit of parts for a building heating system according to  claim 1 , comprising:
 at least one heat pump,   at least two working fluid auxiliary heat sources connectable, directly of indirectly, to said heat pump,   at least one working fluid temperature sensor, and   at least one control unit connectable to said at least one temperature sensor, wherein said control unit is configured to individually control the auxiliary heat sources at least partially based upon the working fluid temperature detected by said at least one working fluid temperature sensor.   
     
     
         20 . Computer-implemented for controlling the building heating system according  claim 1 , comprising the step of operating the control unit to individually control and switch on and/or off, one or more auxiliary heat sources and optionally the heat pump, at least partially based upon at least one temperature detected by said at least one temperature sensor.