Heating installation and method for controlling the heating installation

Abstract

A heating installation includes a heat pump, heating fluid piping passing through a condenser of the heat pump to exchange heat between refrigerant and heating fluid, first and second objects heated by the heating fluid to first and second set temperatures, a valve switchable between first and second positions to supply heating fluid to the first and second objects, sensors detecting first and second actual temperatures at the first and second objects, and a control. The heat pump also has an evaporator, a compressor and an expansion device. The control in a demand dependent mode, is configured to determine a first demand based on the first set and actual temperatures and a second demand based on the second set and actual temperatures, and is configured to switch the valve to the first and second positions based on comparison of the first and second demands. A method for controlling a heating installation heats the first or second object based on such a comparison.

1 . A heating installation comprising:
 a heat pump having an evaporator, a compressor, a condenser and an expansion device connected by a refrigerant piping in a cycle;   a heating fluid piping passing through the condenser to exchange heat between a refrigerant and a heating fluid;   a first and second objects arranged to be heated by the heating fluid to first and second set temperatures, respectively,   a valve switchable between at least
 a first position in which the heating fluid is supplied to heat the first object and 
 a second position in which the heating fluid is supplied to heat the second object; 
   at least two sensors arranged and configured to detect first and second actual temperatures at the first and second objects, respectively, and   a control, in a demand dependent mode,
 configured to determine
 a first demand based on at least the first set temperature and the first actual temperature and 
 a second demand based on at least the second set temperature and the second actual temperature, and 
 
 configured to switch the valve to the first position and the second position based on a comparison of the first and second demand. 
   
     
     
         2 . The heating installation as set forth in  claim 1 , wherein
 the control is further configured
 to switch the valve to the first position if the first demand is higher than second demand and 
 to switch the valve to the second position if the second demand is higher than first demand. 
   
     
     
         3 . The heating installation as set forth in  claim 1 , wherein
 the first object includes at least one heat emitter arranged in a room to be heated, the heat emitter having an upstream side thereof connected to the heating fluid piping via the valve.   
     
     
         4 . The heating installation as set forth in  claim 3 , wherein
 the heat emitter includes floor heating loops.   
     
     
         5 . The heating installation as set forth in  claim 3 , wherein
 the first actual temperature is an actual flow temperature to the heat emitter and the first set temperature is a desired flow temperature to the heat emitter.   
     
     
         6 . The heating installation as set forth in  claim 1 , wherein
 the second object includes water contained in a hot water container, and   a portion of a pipe is connected to a heat exchanger configured and arranged to transfer the heat to the water or forms the heat exchanger passing through the interior of the hot water container, the portion of the pipe having an upstream side connected to the heating fluid piping via the valve.   
     
     
         7 . The heating installation as set forth in  claim 6 , wherein
 the second actual temperature is an actual water temperature of the water contained in the hot water container, and the second set temperature is an desired temperature of the water.   
     
     
         8 . The heating installation as set forth in  claim 1 , wherein
 the control has an input device arranged and configured to select between the demand dependent mode and a priority mode in which a priority is manually set with respect to the first object or the second object.   
     
     
         9 . A method for controlling a heating installation, which includes:
 a heat pump having an evaporator, a compressor, a condenser and an expansion device connected by a refrigerant piping in a cycle;   a heating fluid piping passing through the condenser to exchange heat between a refrigerant and a heating fluid;   first and second objects arranged to be heated by heat of the heating fluid to first and second set temperatures, respectively, the method comprising:   detecting first and second actual temperatures of the first and second objects, respectively;   calculating
 a first demand based on at least the first set temperature and the first actual temperature and 
 a second demand based on at least the second set temperature and the second actual temperature; 
   comparing the first and second demands; and   heating either the first object or the second object based on the comparison.   
     
     
         10 . The method as set forth in  claim 9 , wherein
 the first object is heated when the first demand is higher than second demand, and the second object is heated when the second demand is higher than first demand.   
     
     
         11 . The method as set forth in  claim 9 , wherein
 the first object includes a heat emitter arranged in a room to be heated, and   the first actual temperature is an actual flow temperature to the heat emitter in the room and the first set temperature is a desired flow temperature to the heat emitter.   
     
     
         12 . The method as set forth in  claim 9 , wherein
 the second object includes water contained in a hot water container, and   the second actual temperature is an actual water temperature of the water contained in the hot water container, and to be heated and the second set temperature is a desired temperature of the water.   
     
     
         13 . The method as set forth in  claim 10 , wherein
 the first object includes a heat emitter arranged in a room to be heated, and   the first actual temperature is an actual flow temperature to the heat emitter in the room and the first set temperature is a desired flow temperature to the heat emitter.   
     
     
         14 . The method as set forth in any one of  claims 10 , wherein
 the second object includes water contained in a hot water container, and   the second actual temperature is an actual water temperature of the water contained in the hot water container, and the second set temperature is a desired temperature of the water.   
     
     
         15 . The method as set forth in any one of  claims 11 , wherein
 the second object includes water contained in a hot water container, and   the second actual temperature is an actual water temperature of the water contained in the hot water container, and the second set temperature is a desired temperature of the water.   
     
     
         16 . The heating installation as set forth in  claim 2 , wherein
 the first object includes at least one heat emitter arranged in a room to be heated, the heat emitter having an upstream side thereof connected to the heating fluid piping via the valve.   
     
     
         17 . The heating installation as set forth in  claim 2 , wherein
 the second object includes water contained in a hot water container, and   a portion of a pipe is connected to a heat exchanger configured and arranged to transfer the heat to the water or forms the heat exchanger passing through the interior of the hot water container, the portion of the pipe having an upstream side connected to the heating fluid piping via the valve.   
     
     
         18 . The heating installation as set forth in  claim 2 , wherein
 the control has an input device arranged and configured to select between the demand dependent mode and a priority mode in which a priority is manually set with respect to the first object or the second object.   
     
     
         19 . The heating installation as set forth in  claim 3 , wherein
 the second object includes water contained in a hot water container, and   a portion of a pipe is connected to a heat exchanger configured and arranged to transfer the heat to the water or forms the heat exchanger passing through the interior of the hot water container, the portion of the pipe having an upstream side connected to the heating fluid piping via the valve.   
     
     
         20 . The heating installation as set forth in  claim 3 , wherein
 the control has an input device arranged and configured to select between the demand dependent mode and a priority mode in which a priority is manually set with respect to the first object or the second object.