Відео

So could it be used with just the immersion if i want to get rid of the gas combi but am unable to get a heat pump?

Now that you’ve helped address the HWC space issue, could you look at the challenges of locating the external unit? We live in a newish 2018 3 bed semi and our house, like many on our development have limited outside space as gardens and generally small and external wall space limited. Would love to know/see if smaller units could be wall mounted on brackets above a driveway as walking around our development this seems to be one of the few consistently free spaces on a lot of new build homes. Some have really limited spare space having often already done into the roof space for the main/master bedroom.

Now that you’ve helped address the HWC space issue, could you look at the challenges of locating the external unit? We live in a newish 2018 3 bed semi and our house, like many on our development have limited outside space as gardens and generally small and external wall space limited. Would love to know/see if smaller units could be wall mounted on brackets above a driveway as walking around our development this seems to be one of the few consistently free spaces on a lot of new build homes. Some have really limited spare space having often already done into the roof space for the main/master bedroom.

How good it will work in -10? For me in summer my heat pump is putting out 16kw but only rated 9kw in winter. Gass boiler was 22kw

Looks great. what happens in midwinter when heating in working hardest? Will you be able to maintain flow temps to the shower and the rads?

Are you able to tell us how the dhw yield (ie how much dhw you get at say 40C) compares to a uvc of similar size and operated at the same heat pump flow temperature? I think that is a, possibly the, key piece of information to enable a logical system choice to be made.

i have a fine mist waterfall shower in my house and it does 2.5-3l a minute, so i built my hot watertank in my camper at 25l. sizing is everything

Apart from the house getting colder because the heating isn't on while everyone wakes up and gets in the shower - rather than the heat pump heating the DHW cylinder at 3am when everyone is tucked up under the duvet... then, yeah, brilliant 🙄 I guess the revolution may not be televised just yet.

I currently generate 250L of hot water in my existing cylinder from solar panels on most summer days, and will use most of that on some days, the rest of the time a smaller proportion. Would I be right in thinking that unless I'm using the hot water at the same time it's being topped up by solar, with this smaller tank I'd essentially be losing a large chunk of the amount of hot water I can generate from my panels and therefore have to rely more on the main form of heating (currently gas)?

Heat geeks, I salute you

Hi , off-topic, for a new house is better to have isolation under the slab and over la slab or is better to put good isolation over la slab ? For creating zones you use actuators or you have a different system? And from the heat pump to have hot water you use a buffer of something else? Thanks

This is so crazy. I also just bought a bunch of stuff to make a system like this. I (maybe unwisely?) went with a 200L tank with a similar large coil but also have a 100L I was going to use for cool water. So I wonder if maybe I should flip that around because the smaller cylinder can heat up faster?

could save even more by getting wet then switch off soap up then rinse off

Hi Adam, huge fan from a fellow YTer! Are you still offering the HG design consultation and install end to end service? I am concerned to pay the initial deposit when there don't seem to be any available heat geeks in my area, they all too busy :) Postcode is LA7, classic Lakes barn currently on ELECTRICCCC!

Really hope this does well, looks to have huge potential!

This is really excellent, will definitely help with our home. Only problem we have is where to locate the external unit.

I have a heat pump with desuperheater. No electric to hot water tank. Over 150 f

Looks like a great product

What kind of lunatic has the shower running for 8 minutes straight?! Oh yeah, our Son when he was a teenager, but no adult I know would take that long.

I have an Ecocamel shower head. It uses the venturi effect to aerate the water.

Adam, thank you this is brilliant news, and maybe explains why you'd gone quiet for a while? To me it looks like a Sunamp with water instead of phase change material, which I assume would make it much more cost effective, but I'm not bright enough to understand what's different about this product compared to past attempts at thermal batteries. If it works it would be a game changer for me to go for a heat pump in future. I've never liked the concept of a huge cylinder with lots of complex connections, and not running your hot water fresh each time, the thermal battery concept always seemed more hygenic. Plus if this gives hot water more quickly, it would save the 0.5 to 1 mins wasting water waiting for the warm to come through from a combi.. I never get to wash my hands in warm water! There would be no space penalty inside the house as the combi - which is a similar size - would come out. It would need to pass the wife test (15 minutes shower or a full bath, at any time of year). I've got a flow restrictor on the shower to around 7 or 8l/s so pretty sure that's ok, but not sure about the bath, was your wife happy with the flow rate (sounded like it took her about ten minutes to fill which sounds ok). And would it convince Roger Bisby, I assume he would approve of all the kitchen cupboard install options.😊

Genius!

Brilliant concept, congratulations! How does the system perform if I start my shower just when the heat pump goes into defrost? Will it stop the defrost cycle? Does it make sure to never use that volume as defrost heat source?

Love the innovation and look forward to hearing more about this. Can you explain how the system works when the outdoor unit defrosts, will it cool the tank?

I'd love to see something like this in my parent's house You mention it's great for flats yet currently the biggy is the size of ASHPs That makes putting them on flats or terraced houses an issue. It is however extremely useful for someone like myself who's got a semi detached house and a combi boiler. It should work well for the *slight* majority of people. People with flats and terraced housing make up a very large minority

Great! Would the temperature need to be higher if you had thermostatic shower mixers?

Probably the biggest hurdle to making the jump to a heat pump if these are proven in the next couple of years. This will be a question with an obvious answer but still getting to grips with the terminology, does this count as a vented or unvemted cylinder, ie would it require an annual inspection to make sure it doesn't turn into a rocket? Also unlikely but if heat geek read this, would be interested in their thoughts on PVT heat pump systems like triple solar. Obviously very expensive and a huge gamble with such little support but removing the noise and external unit combined with this could eliminate another considerable issue in smaller properties.

Wish you guys every success with this! You're all doing phenomenal work. Thank you for all the video guides and everything else you're doing for the industry/users.

This type of approach has been in my plans to implement a heating system for hopefully a fully off-grid tiny house on wheels. Some 16m2 and 3.5m tall space properly insulated for arctic winters & warming summers. Solar and proper LFP battery system with a great efficient inverter to run it. Properly sized extremely well insulated water tank heated using a solar collector, inverter heat pump and backup from a diesel or LPG boiler. The real problem is to find 3..5 kW air to water inverter heat pump, and system implementation to survive possible power or heating interruption during coldest winter. Any suggestions for modifying small inverter mini-splits for this etc and I'm go for the project!

Sold! Moving into a house with a 20yr old crappy gas boiler and was worried about where to fit all the gubbins...... will be tapping into local Heat Geek installer asap!

Scammers.

Very innovative, great work 👍🏻. If you have a system boiler this could allow you to get 'heat pump ready' by switching to this and keeping the boiler, and get some space back. My house was a repo HMO, so I've ended up with an unvented 300l hot tank and 200l accumulator for two people, total overkill. Might think of switching to this. Only potential downside I see is an expansion vessel is still required, but there is usually one integrated into the boiler or heat pump. The volume that this adds to the closed loop may reach the limit of the integrated expansion vessel, so one might need adding.

It is an interesting development and will be interesting to see openenergymonitor figures on a system in the wild - maybe Syzmon?

Great, but I'm still not satisfied.. I want a tank with two stages. The first step will be a volume expander for the heating system and preheating of hot water, and the next as this tank. To achieve this, I have to buy two of these.

An encouraging development.😀👍

So this is heating a water jacket that then heats the hot water pipes? Would you suggest this where space is not a concern (seems like you would)?

is the BUS grant the one where you have to be on benefits before you can get it

Well done for innovating. Its about time somebody introduced something new into the DHW cylinder market, and approached it with the determination and pragmatism needed to solve the real world challenges in normal-sized houses. One question, how does the volume of DHW you can draw off (at say 40C) compare to a similarly sized, well engineered UVC which is also set up for 'real time reheat'? So far as I can see (I can post the full argument if someone wishes to critique it) it could be as good as 'about the same', but couldn't be better. To get to the same it would need careful engineering to preserve stratification, and a coil of sufficient area that it can extract sufficient energy even when only a small amount of water at the top of the tank is still hot. Intuitively that feels possible (and is doubtless what you have attempted to do), but it would be good to have the comparative numbers. IMHO if the yield is within 10-20% as much as a similarly sized UVC, good then its close to a no-brainer in almost any circumstance (not just combi replacement) just to avoid G3 and another expansion tank, and the associated practical challenges and hassle. Even if its not quite this good, its still a great innovation, albeit one that perhaps solves a different problem than the one of physical volume.

Th important thing will be to do the same test in winter when the incoming water is at 5degrees or less. This is the test I would like to see. The next problem in winter is losing the space heating cycle for a prolonged period of time when the hot water is being heated.

Apologies, three independent comments :) In parts of Europe you have a small cylinder (usually direct electric) hung on the wall which services the needs of the bathroom (sink, bath, shower). One of the benefits of that approach is minimising cold draw off before hot water delivery. Do you envisage this solution being used in a similar way?

If a heat pump circulates between 35 and 45 Degrees, why couldn't you get rid of the cylinder alltogether and have an extra large plate heat exchanger and have the heat pump turned upto 40Degrees. The fact that your almost hitting steady state means your inputs and outputs are balanced. Perhaps a slight drop in efficiency but it would be the near zero space soloution? Not much use for a bath but for showers it could be ok, and zero need to store any hotwater at all.

Do you have recommended heat pumps to use with this configuration? Do you have sample schematics for installation in its different forms?

This is interesting - we have a gas combi boiler and had reclaimed the airing cupboard when the old hot-water tank was removed. My wife doesn't want to lose that space again, but a medium-sized version of this wouldn't take much more space than the gas boiler (maybe slightly more, but in a more convenient layout). I shall investigate ...

We had something similar to this through Nu-Heat, where a boiler heated a thermal store (150litres iirc @ 55deg) from which UFH was drawn from and provided hot water the same way you are doing here. In general it was pretty good and allowed the boiler to be in condensing mode for long periods for the UFH circuits. However anything with high flow rate, e.g. running a bath, the water wasn't in the coil long enough to absorb the heat. This meant filling a bath could take a long time as you couldn't open the taps fully if you wanted a nice hot bath. Have you addressed this challenge?

A low temperature thermal store, what a great idea Adam. I know you are a busy boy but could really do with your help when it comes to training the next generation for our industry, if we are not careful there will not be any engineers to up-skill.

Looks like my Gledhill heat store tank from the '90s, with the exception that I have a diverter valve on the return flow to take the heat to the central heating.

Great. Is the invention the insight that a HW cylinder can be sized to customer requirements, designed for ease of installation and for low temperature charging? Is there any additional control function? Many thanks.

Brilliant, well done! And great blanking of the nipples. Just flats to sort out now 👍

Nice bit of innovation. We used to fit acv tank in tank setups with heat pumps which is a similar concept but poor surface area compared to coil delivery and still needed g3 ancillaries, good for reheat efficiency though. Also done buffers with plate delivery dhw on boilers for unlimited hot water, and thought about doing them for heat pumps too. They are all variations of what I know as semi instantaneous hot water solutions. Also I think yours could qualify as a shell and tube heat exchanger.

I never understood why the industry stored the heat in the hot water itself. So someone have an idea? Cost? Change? Complexity? Sunamp have a similar concept with changed phase material (heat up and liquidify a type of paraffin to store the heat). You (heat geek) should do a video about it :-) Love the concept!