Under floor heating/cooling is great but is very slow to respond to changing load requirements, typically (in my case) response times are 1-2 hours.
When there is a meteorological temperature change the loading requirements on the system also change. As I don't have individual thermostats controlling flow rates through the collector valves the change is notable. As I attempt to run the water at the minimum temperature required for comfortable living (= least energy consumed and no mixer valves to control maximum temperature) I have to increase the required water temperature and/or switch on the second heat pump to give a boost. This then takes time to take effect, typically 1-2 hours.
I got thinking, wouldn't it be cool (excuse the pun) if I knew future predicted temperatures I could automatically adjust the temperature to cater for the lag and thus not have to manually adjust things.
So much exists on the internet now so I went looking for a weather feed and found one at
Сurrent weather and forecast- OpenWeatherMap, they provide a 3 hour (as well as many more) forecast, perfect for my needs.
Next up (while I'm waiting for the pressure sensors to arrive for the defrost project).. see if I can integrate the feed into my controller.
Acuario