I am looking for a new integrated fridge freezer and am considering the Bosch KBN96SDD0 with Home Connect and Home Assistant support.
The optimal freezer temperature is -18 °C. I would like to adjust this target temperatue with a narrow range, for example between -23 and -16 °C, with -18 °C as the default.
For example, at 07:40 I would increase the target temperature from -18 to -16 °C for 20 minutes, then revert to -18 °C at 08:00 to benefit from lower electricity prices.
Between 13:00 and 14:00, when the price is -17 ct, the target temperature can be set to -23 °C, and afterwards returned to the default.
Around 16:45, the temperature can be lowered for 15 minutes to pre-cool and buffer cold ahead of higher prices. The same applies around 19:45.
This logic can be based on:
hourly price differences
solar energy surplus or shortage.
combination of these two
I understand that with integrated fridge freezers, the temperature range (and thus the implicit energy storage) is limited, and that storing cold always results in some degree of energy loss so it can only be done for short periods of time.
Is it indeed possible to adjust the target temperature for the Bosch KBN96SDD0?
Have people tried or implemented such a solution?
Many people say it is not possible to steer the the energy use of fridges: is that really the case?
Would it indeed be possible to (slightly) lower prices and more self usages of solar energy?
I found an old announced (2008) from the UK where it would be tested to balance the grid. I cannot find a study with the results unfortunately
++++++++++++++++++++
Fridges of the world, unite!
IF THE millions of refrigerators, electric water heaters and air conditioners attached to the average power grid were less selfish, and adjusted their energy needs according to the state of that grid, there would be less need to run spare coal-fired generating capacity on the off-chance it might be required. Moreover, intermittently available power sources, such as the wind, could be accommodated more easily. Both of these things would save money and carbon-dioxide emissions.
Source: The Economist Fridges of the world, unite!
+++++++++++++++++++++++++++++
Instead of spikes in demand and coal-fired solutions, fridges and washing machines may soon be available that can regulate their own energy usage. Mark Anslow reports on a new generation of electrical appliances that ‘listen’ and learn. From The Ecologist, part of the Guardian Environment Network
+++++++++++++++++++++++
Research paper:
Dynamic Ancillary Service Provided By Loads With Inherent Energy Storage
source: https://gridwiseac.org/pdfs/forum_papers09/howe.pdf
Soon in the Netherlands the dynamic pricing will be based on 15 minute windows instead of 1 hour windows. This will lead to more opportunities to tweak the energy use.
With this proces i dont want to influence the grid negatively so i would also take into account the imbalance of the grid. Is there also an open api to consider these prices?
