PhilT Posted October 27, 2022 Share Posted October 27, 2022 2 hours ago, ProDave said: You must have a predictable family routine? with only 2 of us of course, and so will the majority of the other 9m (18m people) 2 person households in the UK (when they all get heap pumps!!!) so it's a potentially useful case study Link to comment Share on other sites More sharing options...
Dave Jones Posted October 28, 2022 Share Posted October 28, 2022 13 hours ago, ProDave said: You must have a predictable family routine? 2 good showers will empty our tank, and HW has to be available any time of day because "they" will shower at any time of day that pleases them which is of course not always the same, so "sorry there is not hot water as it is before 3PM" would not cut the mustard here. I have mine timed to come on at 11AM, on the basis there will be enough hot water from yesterday for one shower, and if someone has that early shower I manually turn the DHW on earlier. Random showering times are at odds with trying to be efficient and cost effective. finite supply is definitely the achilleas heal. I've calculated we would need a bare minimum of 750L of hot water available at any time. 5 x power showers at 15L/min @ 10 mins ea more if the females are involved... I like very much the mixergy tank as the primary 'boiler' with some sort of pumped system to move the heat to the other tanks dotted around.... Link to comment Share on other sites More sharing options...
Marvin Posted October 28, 2022 Share Posted October 28, 2022 1 minute ago, Dave Jones said: finite supply is definitely the achilleas heal. I've calculated we would need a bare minimum of 750L of hot water available at any time. 5 x power showers at 15L/min @ 10 mins ea more if the females are involved... I like very much the mixergy tank as the primary 'boiler' with some sort of pumped system to move the heat to the other tanks dotted around.... I'm sure someone will point out that with a higher temperature of water in the hot water tank this reduces the volume used when mixed with cold, and therefore reduces the required storage. At 60°C storage and 45°C use my guess is about 30% cold water Link to comment Share on other sites More sharing options...
Dave Jones Posted October 28, 2022 Share Posted October 28, 2022 10 minutes ago, Marvin said: I'm sure someone will point out that with a higher temperature of water in the hot water tank this reduces the volume used when mixed with cold, and therefore reduces the required storage. At 60°C storage and 45°C use my guess is about 30% cold water looked at this, higher you want the flow temp the lower SCOP you get. I've also factored in waste water heat recovery which does help a lot, at least on paper. 1 Link to comment Share on other sites More sharing options...
Marvin Posted October 28, 2022 Share Posted October 28, 2022 Just now, Dave Jones said: looked at this, higher you want the flow temp the lower SCOP you get. I've also factored in waste water heat recovery which does help a lot, at least on paper. It's a lot of water. I would also reduce tank heat loss by encasing in insulation (protecting electrical parts) in at least 200mm fluffy or equivalent. Link to comment Share on other sites More sharing options...
Dreadnaught Posted October 28, 2022 Share Posted October 28, 2022 18 hours ago, HughF said: Throw the timeclock and room stats in the bin, install Homely, set your room temperature... Is Homely compatible with my heat pump? Currently, Homely is compatible with the following heat pump brands: Samsung (model number beginning with AE, manufactured post 2015) Midea We are always looking to expand the list of compatible heat pumps so please do check back if yours is not currently showing. https://help.homelyenergy.com/knowledge/is-homely-compatible-with-my-heat-pump Link to comment Share on other sites More sharing options...
Alan Ambrose Posted October 28, 2022 Share Posted October 28, 2022 >>> 200mm fluffy is that an SI unit? - it should be along with 2 inches jumpery and 1 chain fleecy… 3 Link to comment Share on other sites More sharing options...
Dave Jones Posted October 28, 2022 Share Posted October 28, 2022 5 minutes ago, Marvin said: It's a lot of water. I would also reduce tank heat loss by encasing in insulation (protecting electrical parts) in at least 200mm fluffy or equivalent. completely agree. current plan is to use the plant room where the tanks are as a major input to the mvhr so it can reclaim some of this heat and distribute around the house. Link to comment Share on other sites More sharing options...
Marvin Posted October 28, 2022 Share Posted October 28, 2022 2 minutes ago, Dave Jones said: completely agree. current plan is to use the plant room where the tanks are as a major input to the mvhr so it can reclaim some of this heat and distribute around the house. Good in the winter but not so controllable in the summer. Link to comment Share on other sites More sharing options...
HughF Posted October 28, 2022 Share Posted October 28, 2022 7 hours ago, Dreadnaught said: Is Homely compatible with my heat pump? Currently, Homely is compatible with the following heat pump brands: Samsung (model number beginning with AE, manufactured post 2015) Midea We are always looking to expand the list of compatible heat pumps so please do check back if yours is not currently showing. https://help.homelyenergy.com/knowledge/is-homely-compatible-with-my-heat-pump Link to comment Share on other sites More sharing options...
Marvin Posted October 28, 2022 Share Posted October 28, 2022 9 hours ago, Alan Ambrose said: >>> 200mm fluffy is that an SI unit? - it should be along with 2 inches jumpery and 1 chain fleecy… Yes. It's a technical term of old. 1 Link to comment Share on other sites More sharing options...
Kevm Posted October 29, 2022 Share Posted October 29, 2022 13 hours ago, HughF said: Hmmm, the conflicting information on the Homely site puts me off right away. I think the key word here is 'compatible'. My £90 wireless stat is 'compatible' with my Ecodan in that it can connect to the controller and switch it on and off. Homely can work like a standard room stat too and I suspect that's what the long list of compatible manufacturers refers to. I think the clever integration is currently only Samsung and Midea. 1 Link to comment Share on other sites More sharing options...
HughF Posted October 29, 2022 Share Posted October 29, 2022 12 minutes ago, Kevm said: Hmmm, the conflicting information on the Homely site puts me off right away. I think the key word here is 'compatible'. My £90 wireless stat is 'compatible' with my Ecodan in that it can connect to the controller and switch it on and off. Homely can work like a standard room stat too and I suspect that's what the long list of compatible manufacturers refers to. I think the clever integration is currently only Samsung and Midea. Yeah it’s not ideal… I’ll get onto them and ask what’s going on. Link to comment Share on other sites More sharing options...
RichardL Posted November 2, 2022 Share Posted November 2, 2022 On 27/10/2022 at 19:06, ProDave said: ...HW has to be available any time of day because "they" will shower at any time of day that pleases them... Cold water might help change that into a more predictable routine? Link to comment Share on other sites More sharing options...
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