This is what my system controls would look like if I didn't have a computerised home automation system:
Wait a minute, I haven't got a computerised home automation system!
Since January 5th we have used 222kWh on the ASHP over the last 26 days. That's about 9kWh per day for heating and hot water.
However some days the hot water temperature has been boosted by the PV excess power going into the immersion heater so let's assume 8kWh per day for 100m2 home. The heating is running 24 hours a day at an average of 20C. The outside temperature has been low (I will look up the records later) with only about 4 nights of frost.
Results from trying different
We use 2 × SunAmp PVs for our HW system in a household of 3 people.
According to our water bills, our consumption is about 83 ltr per person per day. Our pattern of use is pretty even across the year: more showers in the summer; an occasional shared bath in the winter.
The year round average temperature of our rising main is 11.3 °C (Oh, the wonders of logging everything in a DB and knowing how to do SQL subqueries).
The H/W manifold is mixed to 53°C (perhaps a li
The story so far.
My background of building has helped; our modest budget dictates the house will be modest and simple.
Highland planning guidance wants single or 1.5 storey houses, ideally traditional looking, or architecturally beneficial. Architects as a whole are probably the most important people to take Ideas and turn them into a deliverable home. Unfortunately an architect for us is unaffordable.
We have a budget, and we have to squeeze and leverage every penny fro
Over the years, 24 and counting, as a couple we’ve never settled, bought a house needing doing up, renovated it, lived in it, whilst bringing up our son.
Sold, moved to rented, bought and renovated others. Sold and moved on, but never settled.
Thought about emigrating, a disastrous foray into overseas property and we still found ourselves unsettled.
The thought of doing something different with our lives and possibly working together was always there. Over the years I’ve built
We moved into our new build mid-December 2017 in time to host an extended family Christmas. We are now over 4 years into living in our new home. We have lots of accumulated experience and made a few small tweaks. However, we are delighted about how the house has turned out, and we love living here. There were no material cock-ups, or regrets on design decisions, so we have probably fared a lot better than most new purchasers or self-builders. Maybe a general experiences post should be on th
There have been lots of discussions about the effectiveness and efficiency of an ASHP and so I am keeping basic records. I have my own electric meter on the supply to the ASHP so I know how much power has been used whether from the mains or the PV.
The result so far using the ASHP installed is 123 kWhs have been supplied to the ASHP from Jan 1 to Jan the 21st to heat the building and hot water. As it is difficult to split the power used for hot water (and we have an immersion using t
Well the combo is coming together and my wife insists that I make the controls as clear as possible "in case your not here". I wondering what she means.
Still a lot to do though..
@Iceverge recently pointed to@TerryE 's blog "Heating the Slab- an overview" which made me think.
TerryE has a concrete floor that he is using as a giant heat sump, heating up overnight with the warmth slowly emitting from the floor during the day. Such a simple design when the maths is right!
@SteamyTea pointed to a report about boilers and ASHP's which had various recommendations.
Having installed an electric meter for the ASHP the effect of changes can be
Well the ducting is all buried under a foot of insulation in the loft.
The coil boxes have also been covered more since the photo.
Noted the temperatures of the incoming air at the inlets in the ceilings against the outside temperature. Inside 20C ish, outside 7.8C, incoming air 20C ish.
By my calculations this seemed to good to be true and I realised, eventually, that the air was being warmed up as it passed along the ducts inside the thermal envelope of the
Finally having time to update you(and me) about the progress. It s happening fast now. Finally.
https://tintabernacle.blogspot.com/2021/12/the-frame-is-going-up-fast.html
We left you with a poured slab and we were chomping at the bit to get the ground floor Nudura walls up before the end of the year. Well, I am glad to report we got there - almost ?
After getting the slab done, I figured I'd get ahead a bit and it would be a good idea to talk to someone about the waterproofing we would have to put on the outside the walls before we started backfilling. To cut a long story short
using waterproof concrete in walls such as these is a complete no
We don't have a big information system on our ASHP. I decided just to add electric meters as a way of seeing what is going on. Our home is just about 100m2 floor plan bungalow.
Decided to run the water coils in the MVHR ducts just to draw out any air. Left them on by mistake until we realised we were too hot but all the radiators were off! After this I fiddled with the ASHP heating temperature. Decided to set the ASHP heating water temp to 31C last evening for the hell of it. Las
Not really having much information to go on when installing an ASHP on my flat roof, we decided to go ahead anyway.
Questions that arose were about things like will it blow over, can the warm roof take the weight, can the warm roof take all the vibration, will it wear away the EDPM, is the condensation OK to go into the soakaway, is there much maintenance required, how heavy is the ASHP, can we get it up there, can we get the power up there, will the control cables reach where we
I haven't posted to my blog for a couple of months, mainly because we haven't been able to progress until we got the Structural Engineers report.
This was promised in 2 weeks and ended up taking 10.
I now suspect that this was because they didn't want to tell us the news.
Our build is a barn conversion so we've had to jump through lots of hoops. ,making lots of money for other people.
But, particularly for the SE, first it was the report where they said t
This is posted during the design and installation phase during the winter 2021/2022. The cooling side results are not expected to be known until Summer 2022.
As the air passes through the water coil it changes temperature depending on the coil water temperature. If the coil is going to be used for heating only it can be used without a condensate trap. However as this is going to be used for cooling as well I have constructed a drain in the bottom.
Coil with lid off. Air
Greetings! Apologies for the crass title but I am still a kid at heart. ?
After a brief delay due to Covid-19 the carpenters were able to attend site and erect our timber frame. Thanks to the accuracy I insisted on and ensured for the coursing blocks the sole plates were a doddle and were done in no time at all although we did have a bit of rain and I had to get the puddle pump out!
We used Flight Timber for our timber frame and they have their o
The existing loft insulation irritated the .... out of me. Mainly because I needed to change a lot of pipes in the loft and the roof is only 22.5 degrees and the fluffy was very thick. What with the 150mm insulated MVHR pipes (190mm thick) 2 high and a roof at 1300 ish it was too cramped. Anyone looking at the ducting photos will see the loft was bare.
Before insulating, the bungalow was loosing 87% of the heat through the roof because the rest is so well insulated. Gonna have to tur
The existing loft insulation irritated the .... out of me. Mainly because I needed to change a lot of pipes in the loft and the roof is only 22.5 degrees and the fluffy was very thick. What with the 150mm insulated MVHR pipes (190mm thick) 2 high and a roof at 1300 ish it was too cramped. Anyone looking at the ducting photos will see the loft was bare.
Before insulating, the bungalow was loosing 87% of the heat through the roof because the rest is so well insulated. Gonna have to tur
More of the same...
When insulating the ducts I noticed that the top of the MVHR was not insulated so I have installed flexi conduit on the cables ready to throw fluffy over the top.
This is the inlet pipe running under the ridge. 150 diameter with insulation held on with cable ties
An installed air damper in red. More about these later....
Water coil with thermal lid. Lid made from PIR.
The viewpoint used to decide items is a balance between the outlay cost and the running costs. This system will not be the cheapest way to produce heating and hot water nor the most expensive installation system but a balance related to the existing equipment and personal requirements.
BEST ADVICE: Read the manual of the product you are proposing to use BEFORE you buy, especially regarding the installation and check that it will work for you.
Choosing the ASHP:
The s
