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<blockquote data-quote="rollestonpark" data-source="post: 5826576" data-attributes="member: 76444"><p>Done loads on the farm heating system. Mostly raspberry pis, with my own python code with temperature sensors, relays, rs485, mbus, optical probes, Ethernet relays and so forth.</p><p></p><p>So 1 does the house Central heating, 4 zones, thus 4 temp sensors each with 2 port valve and pump and 4 channel relay board on raspberry pi with my own web interface. This allows me to set the heating temperature and start times for each zone, with different settings for weekends and a nice web interface to adjust it at anytime from anywhere etc etc. It also checks the return temperature from the heating plant is high, so that if the plant all goes offline, the pumps on the house shutdown, so it doesn't pump cold water around the rads etc.</p><p></p><p>Another Pi Reads the CHP electric meter at midnight every night and populates an online google spreadsheet with the data, with a new sheet for each month, so I can see the performance of machine and use the data for ofgem roc submission etc.</p><p>I have another Pi reading the 3 heat meters, read everyday at midnight with spreadsheet as above.</p><p></p><p>Another Pi reads the return temperature on the main biomass heating circuit and when it drops (due to heavy load) turns off fan heaters in one of the sheds. When the temperature goes up turns them back on again. Has a web interface to alter the settings etc. This allows certain circuits to have heat priority over other circuits, but still keeps the boiler busy.</p><p></p><p>Got others Pis wired in to the boiler and CHP to show on a web page when they go offline, can send me emails/push notifications if I want and so forth.</p><p>Plus loads of other stuff going on etc.</p><p></p><p>Without these Raspberry Pis, running my Boiler and CHP would be quite difficult.</p><p>And getting someone in to do a custom job to control my specific setup would probably cost many thousands of pounds.</p><p></p><p>Chris</p></blockquote><p></p>
[QUOTE="rollestonpark, post: 5826576, member: 76444"] Done loads on the farm heating system. Mostly raspberry pis, with my own python code with temperature sensors, relays, rs485, mbus, optical probes, Ethernet relays and so forth. So 1 does the house Central heating, 4 zones, thus 4 temp sensors each with 2 port valve and pump and 4 channel relay board on raspberry pi with my own web interface. This allows me to set the heating temperature and start times for each zone, with different settings for weekends and a nice web interface to adjust it at anytime from anywhere etc etc. It also checks the return temperature from the heating plant is high, so that if the plant all goes offline, the pumps on the house shutdown, so it doesn't pump cold water around the rads etc. Another Pi Reads the CHP electric meter at midnight every night and populates an online google spreadsheet with the data, with a new sheet for each month, so I can see the performance of machine and use the data for ofgem roc submission etc. I have another Pi reading the 3 heat meters, read everyday at midnight with spreadsheet as above. Another Pi reads the return temperature on the main biomass heating circuit and when it drops (due to heavy load) turns off fan heaters in one of the sheds. When the temperature goes up turns them back on again. Has a web interface to alter the settings etc. This allows certain circuits to have heat priority over other circuits, but still keeps the boiler busy. Got others Pis wired in to the boiler and CHP to show on a web page when they go offline, can send me emails/push notifications if I want and so forth. Plus loads of other stuff going on etc. Without these Raspberry Pis, running my Boiler and CHP would be quite difficult. And getting someone in to do a custom job to control my specific setup would probably cost many thousands of pounds. Chris [/QUOTE]
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