Hi @ash
I’m very Interested in assessing whether gas and electricity usage can be used to predict whether an ASHP will operate at a reasonable SCOP when it is correctly sized.
I’ve been trying to develop a way of helping homeowners to make the decision to get the calculations done by first evaluating how they currently use the house. This revolves around how they heat the house, cook and use other appliances. This is best taken from their actual annual gas, electricity and other forms of heating. I’ve been working on the basis that the gas heat input is related to the efficiency of the boiler and similarly for wood burners and that all electricity contributes to heating the building envelope. This can then be related to the gross internal area of the house to derive the energy usage intensity – EUI – in kWh/m2/yr.
In order to test the spreadsheet model (currently called House Master), I need annual before and after an installation data and whether the ASHP performance meets the customer’s expectations for performance and cost. Let me know if you (or any other readers) would like to participate in the data collection.
The output will look like this:
[image]
We are hoping to build up a network of case studies of different house types which we will cover in a new website and ASHP’s are key to big carbon reductions.
I covered some of this in a previous post Average electricity cost p/kWh
[Edited to “@mention” ash - prefix their username with a ‘@’ symbol.
also - drag and drop your image into the post – Moderator (RW)]