Last seen: Jan 14, 2025
@sunandair DT is a phrase used too much in HP discussions, one needs to be clear about between what points the difference is being measured. Its nor...
doesn't matter. check the datasheet 2 posts up. the higher the flowT, the worse the COP. same for any heat pump. also you are talking about loss...
@sunandair if your sketch is accurate, and the DT on both sides is the same, and the flow rate on both sides is the same, then heat energy transfer is...
kwh needed is the only unit that can be calculated or estimated by a system designer. although we've had a lot of debate here about how accurate (or n...
@amanda1 several of us are trying to politely put you on the right track, there is no misogyny here, I think I was quite polite in my previous posts. ...
@amanda1 from what I can see (From a quick read of their manuals), the mitsubishi "freeze stat" configuration is a form of "freeze protection function...
@amanda1 in general there are a few concepts to try to separate and think about "defrost" = the heat pump running in reverse. to defrost itself w...
here's a use case: I've seen the "freeze protection mode" on my (samsung) kick in during a very cold snap night in april, after a mild day. the heatin...
@derek-m mine is the same type of system as tim's. here's snapshot of one of my panels just now (its not sunny). current is more or less the sam...
@amanda1 in general, the purpose of the anti-freeze protection function of the HP is usually for the "AND" situation: "outside air temperature below ...
@allyfish mm ok, there must be something else making it cut out because you should be able to go as hot as the immersions limiter, maybe grant have d...
@allyfish at this time of the year if you have copious PV you can turn the immersion stat up to maximum thereby dump the max amount of free energy int...
- 26 Forums
- 2,136 Topics
- 46.8 K Posts
- 55 Online
- 5,662 Members
Join Us!
Podcast Picks
Latest Posts
-
The problem is bigger than rented properties, it applie...
By JamesPa , 45 minutes ago
-
RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
We got lucky and hit gold with our installer. Rather th...
By Old_Scientist , 56 minutes ago
-
RE: Mitsu Wireless Controller and MelCloud
@robs Hi Rob, I really appreciate your information, a...
By DavidAlgarve , 1 hour ago
-
RE: What crazy nonsense are inverter limits and why are they imposed?
What limit are you speaking of. So far I was aware dno...
By JamesPa , 3 hours ago
-
RE: Why so many sigenergi installer recommendations?
@adamk Tesla is a great option, it’s also one we instal...
By SAEnergy , 5 hours ago
-
RE: Rodents! A word of warning for heat pump owners
Hradline in Telegraph: Brace for plague of rats after s...
By Tim441 , 10 hours ago
-
RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
As a potential heat pump customer, it would be good to ...
By Temperature_Gradient , 12 hours ago
-
RE: Octopus replacing the fixed 15p/kWh export rate with a market tracking one
@trbob I have just extracted the details for Agile Expo...
By Toodles , 19 hours ago
-
RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
The Ultimate Guide to Heat Pumps is less than a month a...
By Mars , 20 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor Hi Mars, We have just installed a Grant Aerona...
By GrahamF , 2 days ago
-
RE: Sanity check please. Battery storage and inverter sizing.
There are MCS guidelines about how close to the edge/ri...
By Old_Scientist , 2 days ago
-
RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I estimated our usage on the following basis. The mos...
By Old_Scientist , 2 days ago
-
@editor Something changed in this last 12 months, they ...
By ASHP-BOBBA , 3 days ago
-
RE: Ecodan & MelCloud scheduling
I put the above question to Mitsu UK at the sme time as...
By DavidAlgarve , 3 days ago
-
Thanks for the heat geek info. I've fitted my own heat ...
By bontwoody , 4 days ago
-
RE: Does anyone have experience of a smart water meter?
Just to give a sense of scale, I've used the CCW water ...
By Majordennisbloodnok , 4 days ago
-
RE: Powerwall 3 or Myenergi or something else?
We have a Tesla Powerwall 3, recently installed, so I m...
By Old_Scientist , 5 days ago
-
RE: Mitsubishi PAR-WT60R-E Wireless Controller installation
@morgan They have been paired once but it was thought b...
By DavidAlgarve , 6 days ago
-
RE: Isolating the system for a planned power cut
A great many ground-mounted local substation transforme...
By Transparent , 6 days ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Having bit the bullet and paid £250 for a service, our ...
By Old_Scientist , 7 days ago