Heat distribution in the home
I read that best practice for domestic heat pumps is to operate a 'slow and steady' regime, running 24/7 and with no TRVs. Heat delivery to different rooms in the property being balanced by careful adjustment of UFH valves and radiator lockshield valves. I can imagine that the difficulty in optimisation will depend on the extent of room compartmentalisation, as opposed to an open-plan living arrangement. I am concerned by the potential effects that I would be likely to experience with my kitchen/diner and lounge, both of which have large expanses of glass on the east-facing walls. When the sun appears they warm up very quickly. Perhaps Air to Air heat pumps would offer a better solution (although my wife would be sensitive to any fan noise).
Solar gain is definitely a control issue irrespective of the heat source. I have a south facing patio window in the room we spend most time in, and it does overheat a bit whatever I do when the sun comes out in winter.
The accepted solution with an ASHP seems to be to fit TRVs set a degree or two above the desired temperature, so they act as temperature limiters not temperature controllers. This shouldn't adversely affect COP because, when they do kick in, all rooms are still being heated by one means or another, so you are not suffering the problem that a small emitter area is being used to heat a larger area of the house than it was designed for (which means you have to increase flow temperature to compensate - the mechanism by which COP is reduced if you only heat part of the house).
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
- 26 Forums
- 2,171 Topics
- 47.8 K Posts
- 38 Online
- 5,744 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Big Changes Coming to Our Heat Pump System
@editor your engineer's attitude is truly horrifying. ...
By GrahamF , 16 hours ago
-
@cliffhanger - seriously though, I have no idea. What I...
By cathodeRay , 18 hours ago
-
RE: How to choose Towel Rails for an ASHP
@rob-nezard yes absolutely. Here is the link and a pho...
By GrahamF , 18 hours ago
-
@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 20 hours ago
-
RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 23 hours ago
-
RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
It is interesting to see what our new Grant Aerona 290 ...
By GrahamF , 1 day ago
-
RE: Testing new controls/monitoring for Midea Clone ASHP
I've never physically seen it, but I seem to recall som...
By cathodeRay , 1 day ago
-
@jamespa Ours is a Daikin EDLA03 8 kW and the Delta T =...
By Toodles , 1 day ago
-
RE: Midea ASHP – how to set weather compensation
I noticed that too and thought the same thing, but then...
By cathodeRay , 2 days ago
-
RE: Ya can’t win! It is S*d’s Law!
@old_scientist If IOF is still running next late spring...
By Toodles , 2 days ago
-
RE: Electricity price predictions
Those of you on Agile will do well tomorrow; there are ...
By Toodles , 2 days ago
-
RE: Who’s Caved and Switched the Heating On Already?
We've been running our Ecodan system, installed in June...
By Sheriff Fatman , 2 days ago
-
Ok. Two schools of thought. The first is to run the ...
By JamesPa , 3 days ago
-
@drei Willing as I am to help, I don't think I'm yet ...
By JamesPa , 3 days ago
-
Selling 5 year old ASHP & Gas Combi Boiler - £590
Selling a 5-year-old Daikin Altherma Hybrid Air Source ...
By Paul G , 3 days ago
-
RE: Help me keep the faith with my air source heat pump installation
Er true, it should have read l/hr!
By JamesPa , 3 days ago
-
RE: Is a Valliant Inline 6kW heater a BUS buster?
Much of that is true in principle, but its not likely t...
By JamesPa , 5 days ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@dgclimatecontrol I attach the responses from 2 potenti...
By pash44pump , 5 days ago
-
RE: Buffers, hot water and cooling
@dgclimatecontrol thanks, that's helpful.
By JamesPa , 6 days ago