Do I need a HP specific cylinder?

[sharpener]

14 hours ago, Gordo said:

Any feedback on how it performs would be appreciated

 

See this thread which I have already linked you to so no new information.

 

Did you get a quote for the HX kit? I am interested to know what they cost. IMO this will be the best technical solution.

Edited November 11 by sharpener

[Gordo]

On 11/11/2024 at 13:11, sharpener said:

 

See this thread which I have already linked you to so no new information.

 

Did you get a quote for the HX kit? I am interested to know what they cost. IMO this will be the best technical solution.

wow that post is i litttle over my head. it sounds like you opted to replace the DHWC in the end for a HP cylinder? I think my existing cylinder should work but would have to fit a booster pump to increase the heat transfer, or fit a plate heat exchanger. Im thinking id be best to just stick with the immersion heater on PV or E7 tarrif.

[sharpener]

11 hours ago, Gordo said:

it sounds like you opted to replace the DHWC in the end for a HP cylinder?

 

No, it was physically impossible to do short of a substantial amount of building work. Hence the quest for a workaround. The new tank is a heat store so I can heat with cheap rate electricity during peak hours.

 

11 hours ago, Gordo said:

I think my existing cylinder should work but would have to fit a booster pump to increase the heat transfer, or fit a plate heat exchanger.

 

As upthread I would suggest you pursue the HX option, hence my interest in the price they quote. I don't think a secondary destratification pump will be enough on its own.

 

11 hours ago, Gordo said:

Im thinking id be best to just stick with the immersion heater on PV or E7 tarrif.

 

Well depending on the cost of the HX I would think that might work out cheaper in the long run. Need to do a proper cost-benefit analysis. Octopus Cosy is good bc of the afternoon cheap period just before the evening peak so better than E7 for a HP.

 

Using your own PV is now suboptimal when you can sell everything you generate to Octopus at 15p and substitute it with cheap rate bought from them at 12p or Eon at 6.7 or Tomato at 5.

 

[Gordo]

11 hours ago, sharpener said:

 

No, it was physically impossible to do short of a substantial amount of building work. Hence the quest for a workaround. The new tank is a heat store so I can heat with cheap rate electricity during peak hours.

 

 

As upthread I would suggest you pursue the HX option, hence my interest in the price they quote. I don't think a secondary destratification pump will be enough on its own.

 

 

Well depending on the cost of the HX I would think that might work out cheaper in the long run. Need to do a proper cost-benefit analysis. Octopus Cosy is good bc of the afternoon cheap period just before the evening peak so better than E7 for a HP.

 

Using your own PV is now suboptimal when you can sell everything you generate to Octopus at 15p and substitute it with cheap rate bought from them at 12p or Eon at 6.7 or Tomato at 5.

 

Octupus not available im my area 😞 

I only get 7hrs E7 at 14p. Export at 10p so i try to consume myself before exporting.

 

Iwill do a cost benifit calculation to see if HX is worth it. But my gut says not