Last seen: May 27, 2025
@jamespa There is no consensus as manufacturers will not supply their test data, however, it is very much based on the design of the refrigerant circu...
@jamespa, please do not make assumptions when you admit that you do not understand the topic. There are reasons for the 5 Deg Delta T but they are exc...
@sunandair a red herring, cycling is not the problen some make it out to be.
@sunandair That is what I would expect from a system with adiquate volume. The panasonic prevents the flow temperature dropping below 25 Deg C which i...
@sunandair You are correct, the volumisor on the flow will buffer the cold shock comming from the heat pump going to the radiators and the asociated d...
@robl Your analysis is correct, for heating the most efficient Delta T across the condensor is in fact 5 Deg C and most manufacturers will reccomend t...
@jamespa Install one of these on the main incommer.
@adamk Yes you can to that. I never use old radiators. If the customer insiste, I walk away, it is not worth it.
@jamespa There are many hundreds of other variables in the vapour compression circuit, miss one and the calculations are irrelivant. Every time I thnk...
It is just thermodynamics, the higher you move the flow temperature the more it will cost to run, existing radiators may need a higher flow temperatur...
All heat pumps, using the same gas, will have a verry simmalr perfomance, you cammot beat the rules of thermodynamics, the biggest effect on heat pump...
Hi @dreg1 11, Kw or 10.6 is neither here nor there, it is considered to supply 100% of the load and will with ease, if your system is controlled prop...
Latest Posts
-
RE: Location of hot water isolation valve on cylinder
@rossowheels if you isolate the water supply in it will...
By ASHP-BOBBA , 7 hours ago
-
RE: Ecodan consuming 100kwh per day in new build!!!
From what you say about the radiators upstairs it does ...
By JamesPa , 13 hours ago
-
RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer pleased you found it!
By JamesPa , 14 hours ago
-
The Importance of Radiator Balancing for Efficient Heating: Introducing the Flow Regulating Valve
It’s fascinating to watch how low-temperature heating i...
By Mars , 15 hours ago
-
@heacol, if you're around, can you please provide some ...
By Mars , 18 hours ago
-
RE: Servicing Hitachi HP in rural Somerset
I'd give GreenGenUK a call or email them: sales@greenge...
By Mars , 19 hours ago
-
RE: Heating coming on when not required
I played with a max heating temp but there is a world o...
By JamesPa , 1 day ago
-
RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 1 day ago
-
RE: Heat pump solutions and/or installer recommendations for France
I’d travel to France for work if you were struggling wi...
By Damon Blakemore , 2 days ago
-
RE: 5 Star Service from Havenwise
That's always a danger with any new good idea, @morgan....
By Majordennisbloodnok , 2 days ago
-
Have your say in the Renewable Heating Hub Awards
It’s time to celebrate the best (and call out the worst...
By Mars , 2 days ago
-
-
RE: Mitsubishi cycling while on chilled water output
@iaack yes there's no denying that cold air sinks! I s...
By downfield , 3 days ago
-
RE: Weather compensated secondary circuits with Biomass
@andycoo that flooring sounds ideal. Extra volume is ...
By Sune , 3 days ago
-
If you are thinking of heating on the immersion conside...
By JamesPa , 4 days ago
-
RE: Surface mount or bury primaries for heat pump installation?
@tomasmcguinness, I think your best bet would be using ...
By Aventus Eco , 4 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles all depends on asking the right questions! And...
By Tim441 , 4 days ago
