Immersun Perfomance Estimation

[danesol]

Totally impossible to calculate as this will differ from household to household. However, in general you can suggest that if they leave the house empty during the day and dont use any kind of home automation - they would be foolish NOT to have one of these types of devices fitted at the right price of course.

However the more savvy PV owner will have a monitoring device and/or use PVO telling them exactly in data or graph format what their consumption and generation levels are and when - the rest and the resultant decision is IMO a no brainer based on knowing this info.

 

[EWP]

I would agree, you need to make a lot of assumptions, so I have been careful about publishing anything.

I am just happy to have hot water the vast majority of days for free.

 

[The Solar King]

Totally impossible to calculate as this will differ from household to household.

I would agree, you need to make a lot of assumptions, so I have been careful about publishing anything.

Welcome to the world of Solar Thermal. System sizing is everything. Too small and the benefits are greatly reduced. Too large and excess heating of auxiliary volume is required when solar gain is unavailable. There have always been approximate measures of usage and effort is constantly made to refine methods of estimation.

Returning to the Immersun, which is where I started, you can be certain someone out there will fit these without due regard to the issues originally mentioned. We have seen too many examples in renewables where the reputation of excellent products can be tarnished by inappropriate installation.

As with PV performance, I prefer to err on the side of caution. This still shows an excellent ROI for the customer. If I have made an oversight I am still OK and if I haven't the system over-delivers, equaling one very happy customer. My approach to the Immersun is the same. This is one of those excellent products where a little forethought ensures complete customer satisfaction. Hence the reason for my original post.

 

[echase]

The Intelligent Immersion Ltd model i2 and its prototypes and derivatives have been in service for up to 2 years now. We predated the Immersun. Several have comprehensive internet based monitoring systems on them so we are able to quantify their benefit. We have proved that the statement made by some competitiors that £250 per annum will be saved is quoting the top end of the scale as if it applied to all and I think it discredits us all to quote such figures. We conservatively quote payback periods of 1-4 years. But we do not have any data for systems in the north of England or Scotland so am interested in any data from there.

 

[f1geoff]

Hi I was interested in your thread & have daily input monitoring figures for my pv system if you are interested.
Have you found the immersun to be effective as i am thinking of installing one.

- - - Updated - - -

Hi I was interested in your thread & have daily input monitoring figures for my pv system if you are interested.
Have you found the immersun to be effective as i am thinking of installing one.

- - - Updated - - -

Hi I was interested in your thread & have daily input monitoring figures for my pv system if you are interested.
Have you found the immersun to be effective as i am thinking of installing one.

 

[Worcester]

See here for real life examples of it in action (data anonomised)