Reduction Of Power Consumption

Abstract

The invention relates to a method for temporary reduction of electrical power consumption for cooling of buildings where the cooling energy is stored in slab or wall, comprising the step of storing cooling energy in at least some part of the slab ( 4 ) or the wall ( 1,2,3 ) by means of that, during at least one period of time when the electrical transmission network system can supply the necessary electrical cooling machine power, supply cooling machine cooled supply air to channels ( 5 ) arranged in the slab ( 4 ) or the wall ( 1,2,3 ), and the step that, during at least one period of time when the electrical transmission network system is highly loaded, reduce the electrical power consumption of the cooling machine ( 28 ) and at the same time convey supply air through the building through the mentioned channels ( 5 ), which supply air when entering the channel ( 5 ) is warmer than the surrounding slab surface or wall surface adjacent to supply air terminal devices ( 6 ), hereby using the earlier in the slab ( 4 ) or wall ( 1,2,3 ) stored cooling energy to cool the supply air.

1 . Method for temporary reduction of electrical power consumption for cooling of buildings where the cooling energy is stored in slab or wall, comprising the step of:
 storing cooling energy in at least some part of the slab or the wall by means of that, during at least one period of time when the electrical transmission network system can supply the necessary electrical cooling machine power, supply cooling machine cooled supply air to channels arranged in the slab or the wall, and further characterized by the step, that:   during at least one period of time when the electrical transmission network system is highly loaded, reduce the electrical power consumption of the cooling machine and at the same time convey supply air through the building through the mentioned channels, which supply air when entering the channel is warmer than the surrounding slab surface or wall surface adjacent to supply air terminal devices, hereby using the earlier in the slab or wall stored cooling energy to cool the supply air.   
     
     
         2 . Method according to  claim 1 , characterized by the step, that the slab or wall is made of concrete. 
     
     
         3 . Method according to  claim 1 , characterized by the step, to store cooling energy in slabs of prefabricated hollow core slabs or cast-in-situ concrete slabs with embedded channels. 
     
     
         4 . Method according to  claim 1 , characterized by the step, to store cooling energy in at least some part of the slab or the wall by, during at least one period of time when addition of outdoor air is not required, re-circulating cooling machine cooled room air in channels arranged in the slab or the wall. 
     
     
         5 . Method according to  claim 1 , characterized by the step, to reduce the electrical power consumption for the cooling machine by decreasing the supply air flow during at least a period of time when the when the electrical transmission network system is highly loaded. 
     
     
         6 . Method according to  claim 1 , characterized by the step, that with the assistance of an ejector, or a fan, further cool the room air by that parts of the room air is passed through the slab or the wall.