Thermo dynamics for hot water that runs off atmosphere

[Gavin A]

Has anyone looked at the figures, typical house can earn upto £15000 in the the 7 year period at the higher rate

where's that from?

can't be right for hot water only as it's about 10 times the figure for solar water heating.

 

[jason121]

Space heating and hot water 10kw heat loss in 2 bed bungalow running at 45 degrees

 

[jason121]

sorry 10,000 at higher rate

 

[Gavin A]

is that really how much a heat pump will get back over 7 years from RHI?

That seems a hell of a lot.

 

[jason121]

Renewable energy provided by HP for heating	11460	kWhrs
Renewable energy provided by HP for heating	1595	kWhrs
total renewable energy provided by HP for heating	13055	kWhrs

 

[jason121]

that is for an 8.66kw heat load mulitply the 13055kwh by 11.5p

 

[Gavin A]

Is that the entire heat output, or the difference between the heat produced and the electricity used to generate it?

Sorry for the 20 questions, I've not really looked into exactly how the heat pump payments will work, but these figures seem pretty high considering that for most people they'd have been needing a replacement boiler one way or another anyway.

I can understand it to an extent for GSHP as putting the ground loops in is a major undertaking, but surely an ASHP shouldn't need anything like that level of payments. IMO it certainly isn't justified on environmental grounds.

 

[FrankUK]

Can you tell me if ASHP systems running at SPF of 2.5 or less will qualify for the RHI. Designs such as High Temp systems ????

If the equipment isn't listed on this web site it won't qualify as MCS approved.

 

[FrankUK]

Has anyone looked at the figures, typical house can earn upto £15000 in the the 7 year period at the higher rate

The level of RHI hasn't been decided yet so it is impossible to calculate how much of a return you will get.

If the heatpump you buy is on the MCS approved equipment list, and it is designed and installed by an MCS registered installer, once the installation is commissioned and registered by the installer, you will be able to apply for the RHI when it is finally announced.

 

[Earthstore]

Is the problem that they still do not know how to calculate the heat generated?
How do they really calculate it? By heatpump output? If it has provision on the heatpump to measure how much heat has been generated then if there is a fault with the system, or the system has been badly installed and the heatpump has to work hard to overcome this then the RHI payments would go through the roof.
With PV/wind it is simple, you have an approved generation meter.

 

[jason121]

Old news FrankUK I know about the MCS and RHI. What i dont know, if the the SPF is lowing than 2.5 will the customer not qualify for RHI and if the systems are already installed at lower than 2.5 will the RHI be taken away from customer ???.

Read the thread I said if at high rate. Even the low rate of RHI is still a good return @ £6000 for the above

 

[jason121]

Is the problem that they still do not know how to calculate the heat generated?
How do they really calculate it? By heatpump output? If it has provision on the heatpump to measure how much heat has been generated then if there is a fault with the system, or the system has been badly installed and the heatpump has to work hard to overcome this then the RHI payments would go through the roof.
With PV/wind it is simple, you have an approved generation meter.

They will either install meters, which are being installed on systems which qualify for thr RHPP or predicated output by SAP calcs

 

[Earthstore]

They will either install meters, which are being installed on systems which qualify for thr RHPP or predicated output by SAP calcs

So was I right then?
What about all the installs that have been done since July 2009 (I think that was the qualifying date?)

 

[jason121]

Not sure. When installing ASHP, the installer should provide isolation valves for the meter to be fitted. There is a diagram on the energy trust web site explaining how.

 

[Vegelen]

Has anyone looked at the figures, typical house can earn upto £15000 in the the 7 year period at the higher rate

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