Johnny Hancock

Renewables & The Outdoors, with the odd Swim, Bike & Run

[Johnny Hancock @Johnny__Hancock]

@JeremyClimas @DpawsonGas @betateachpod @MarkSiddallRIBA @AR_Clarke @_heatgeek @glynhudson @Protons4B @NIBEEnergy @Damon_BPHR @EcoNorfolk Here's some live data from a EAHP case study that uses the mixed exhaust air/outdoor air approach.

[Johnny Hancock @Johnny__Hancock]

@JeremyClimas @DpawsonGas @betateachpod @MarkSiddallRIBA @AR_Clarke @_heatgeek @glynhudson @Protons4B @NIBEEnergy @Damon_BPHR @EcoNorfolk Depends on the type of EAHP Jez. Some products use purely exhaust air as the heat source whilst some have the ability to use a mixture of exhaust air and air from outside as the source. The later allows the product to reach higher kW output due to the larger volume or air. 1/2

[Johnny Hancock @Johnny__Hancock]

@betateachpod @GSHPinstaller @swebster56 @SNIPEFnews @Installer365 @energygovuk @CondensatePro @EmilyKerr36 @Mad_Gabes @HVPmag @suburbanpirate @Laura_Sandys If only there was a collective noun for describing a group of legends!

[Johnny Hancock @Johnny__Hancock]

@peter_dunsby @GSHPinstaller @NIBEEnergy @betateachpod @kenbone44 @swebster56 Barry's site is a combined surface collector with PV-T , the two other sites are 100% PV-T Peter.

[Johnny Hancock @Johnny__Hancock]

@RickmanHeat @GSHPinstaller @NIBEEnergy @betateachpod @kenbone44 Happy to send you some information Rick 👍

[Johnny Hancock @Johnny__Hancock]

@JuliewhittHall @Leiper53 @NIBE_UK @NIBEEnergy @broxburnboy You will have set-point control for each zone, as well as independent scheduling.

[Johnny Hancock @Johnny__Hancock]

@JuliewhittHall @Leiper53 @NIBE_UK @NIBEEnergy @broxburnboy Hi Julie,

Yes we have an accessory called Extra Climate System (ECS) that allows for this. The second zone can operate at a lower flow temperature in comparison to the radiator zone, and it has a separate weather compensation curve for added controllability. (1/2)

[Johnny Hancock @Johnny__Hancock]

@EcoNorfolk As long as the ductwork has been designed for the appropriate flow rates then this shouldn't be a problem! It's the exact same process as designing for an MVHR system, by ensuring the fan inside the Exhaust Air unit has the available capacity :)

[Johnny Hancock @Johnny__Hancock]

@Damon_BPHR If you've got any plans then send them in and we can have a look for you mate 👍

[Johnny Hancock @Johnny__Hancock]

@Damon_BPHR A run of 10m would typically be fine using 204x60mm. What are the flow rates/No. of wet rooms? Some reference figures below in comparison to the fan capacity on the F730:

Pressure drop through 1m 204x60mm at 35l/s =2Pa
Pressure drop through 1x90Deg Bend at 35l/s = 9Pa

[Steve Webster @swebster56]

Always a pleasure spending time with Jonny Hancock from @NIBEEnergy He did some software magic on this PVT system today. Cheers mate 👌

[Johnny Hancock @Johnny__Hancock]

@jackandthebear @swebster56 @NIBEEnergy Just doing the number crunching now, Jack. Here is a snapshot of the performance measured in February this year though - showing a SCOP of 4.73 before factoring in any offset from the PV generation.

Hot Water summer SCOP was in excess of 5 when we looked on site yesterday!

[Johnny Hancock @Johnny__Hancock]

@Leiper53 @JuliewhittHall @NIBE_UK @NIBEEnergy @broxburnboy Sorry that you're having issues with the scheduling. Would you be able to send me a DM so that we can discuss getting some access to your account over myUplink to see what is happening here?

[Johnny Hancock @Johnny__Hancock]

@swebster56 @NIBEEnergy Just glad I could help! Lovely to see you mate, and glad I finally got to see the awesome job Scott and the team have done on this site! Some number crunching to do now..

[Johnny Hancock @Johnny__Hancock]

@Leiper53 @JuliewhittHall @NIBE_UK @NIBEEnergy @broxburnboy Morning,
We've investigated and can't see any issues with the scheduling functions, so you should be able to still create a mode for "HW Off" which can be applied as necessary. This can be done on the web version of myUplink or on the controller itself.

[Johnny Hancock @Johnny__Hancock]

@robertjwhitney @Zapaman I've had my Kia niro for nearly 9 months now Rob with no home charger (London flat) , and no major headaches so far! Enjoy!

[Johnny Hancock @Johnny__Hancock]

@JuliewhittHall @Leiper53 @NIBE_UK @NIBEEnergy Hello! Sorry to hear you are both experiencing difficulties with the hot water scheduling, let me take a look at this for you and come back with a more definitive solution.

[Johnny Hancock @Johnny__Hancock]

@eric_hawkins9 @betateachpod Hi Eric,
All heating and hot water is still coming directly from the heat pump, with increasing efficiency as the source temperature from the PV-T system increases. Happy to share some data if of interest!

[Johnny Hancock @Johnny__Hancock]

Fantastic to see more PVT systems going in - very much looking forward to monitoring the efficiencies of this one with Barry.

[Renewable Heat (Barry Sharp) @GSHPinstaller]

Day 2 of the Nibe PVT install on my own house, armed this time with expert guidance from @Johnny__Hancock

I would also appreciate it if my Internet friends don't point out that the 2nd row is slight out compared to the 1st. It's been a long day.
@NIBEEnergy

[Johnny Hancock @Johnny__Hancock]

@GoingElectricUK @GSHPinstaller @NIBEEnergy The panels need airflow beneath the panel due to the design of the aerothermal collector, so no in-roof I'm afraid!