Combine heat loss estimate and IR inspection
I have had a couple of heat loss surveys done which vastly vary on my heat loss in one particular room of my house, and therefore on the additional rads required to heat the room... However, I'm extremely limited on wall space in the room. It currently has two vertical designer rads, which are very expensive to upgrade if I can't find wall space for a horizontal... This expense puts a heat pump ever so slightly out of my price range, but the boiler is on its last legs!
So, I was wondering if I could combine something like heat punk or magicplan (a LIDAR app and engineer told me they were using) with images or information from a thermal camera (I have borrowed a FLIR edge one).
The two vertical rads are 1800*440, I don't know the exact manufacturer but I can find plenty of flat 6 panel double rads with approx dimensions and they're all about 1500 W at dt50.
My 2005 condensing combi boiler runs at approx 55 degrees C and the room stat is set to 18.4. I can just get the room to 19.5 if empty and I leave the thermostat on max. If there's two or three of us in the room we can get to 20.2.
Boiler temp is measured with the IR camera and an IR thermometer on the rads and pipework.
The room is approx 43m2, 22 of that is new 2018 extension with a sloped roof. I have drawings for that so I know the floor and roof have 100 mm insulation. known U values of 0.22 floor, 0.21 for the external wall, 0.15 for the sloped roof.
Any help is much appreciated! Thanks in advance
I'm in a similar situation with a couple of large vertical designer rads (1560W @ ΔT50) in a recently refurbished kitchen/diner. For a 40°C flow temperature - i.e. around ΔT20 - the radiator output will be around a quarter of that at ΔT50. I've turned my (oversized) boiler down as low as it will go and been heating my home like this for over a year. All rooms have remained at over 20°C, even during the recent cold weather.
In reality, I suspect that there isn't a problem. My kitchen diner has SE-facing windows and bifold doors so there will be some solar gain. There will also be heat transfer from adjacent rooms and the central heating pipes above the ceiling for the rooms above. The room gains heat from the dishwasher, washing machine, dryer, oven, microwave, fridge, freezer, wine fridge and hot-tap. I note from my gas meter readings over several years that for 360 days of the year my energy requirement for heating is, at most, 80% of the peak in the remaining five days. I'm prepared to wear another layer for 5 days a year if necessary. At a push, I do have space for an additional fan coil unit, but I will be discussing the above with my system designer to see what he thinks.
- 22 Forums
- 2,054 Topics
- 44.8 K Posts
- 58 Online
- 3,289 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: Is this normal? Click of the DHW returning to space heating
So the Lone Ranger returned today! Even though we thoro...
By Grantmethestrength , 39 minutes ago
-
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide
@jamespa So settings to date are as follows for now. ...
By Alfapat , 55 minutes ago
-
RE: Vaillant & OVO partner up to offer Heat Pump Plus
Hopefully iv done the right thing today by signing up t...
By Westkent , 2 hours ago
-
RE: Yes, the "zoning with ASHP" topic again...
Thanks for the detailed reply and I apologise if I can ...
By JamesPa , 2 hours ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
@johnmo I cannot understand that logic I'm afraid. Our ...
By benson , 3 hours ago
-
RE: IVT Greenline high pressure switch and electrical cassette errors
Hi, are you able to see the delta between GT8 vs GT9 te...
By abbote , 3 hours ago
-
RE: Battery sizing - How low can you go!
My own experience with connecting four batteries to thr...
By Transparent , 9 hours ago
-
RE: Plate heat exchanger considerations
Work on 2-3 percent per degree. This is a reasonable e...
By JamesPa , 19 hours ago
-
RE: Advice for ground source heat pump in new build with PV and batteries
The useful bit is the bit that specifies the heat loss ...
By JamesPa , 20 hours ago
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
You’re absolutely right that during defrost the refrige...
By Mars , 21 hours ago
-
@editor thanks Mars that’s the same table I found in th...
By Gary , 1 day ago
-
RE: Tariff and charging strategy advice please
They haven't asked me to prove that I have an EV (I do)...
By JamesPa , 1 day ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
Took a while to find on the OFGEN site: ”The FIT sche...
By AgentGeorge , 1 day ago
-
RE: why solar diverters for HW instead of the heat pump?
For me there are few factors why you may want to heat w...
By Johnmo , 1 day ago
-
RE: Hydronic plinth heaters and ASHPs
@editor yes I think so. It will be a while until I get ...
By benson , 2 days ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
I’m an Aira customer with a 6kW Outdoor Unit in a small...
By KevinPotts , 2 days ago
-
RE: Is your heat pump insured?
@richard24738 good to hear. I’ll also review them this ...
By Mars , 2 days ago
-
RE: Warm weather and heat pumps.
Just looked at my WC setting, it is programmed for 25 D...
By Johnmo , 2 days ago
-
RE: How to disable radiator heating in LG HM161MR
Just to add to above,when adjusting WC heat pump should...
By JamesPa , 2 days ago