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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    • CommentAuthoraberned
    • CommentTimeFeb 12th 2015
    I have a 10kW solar PV system and export around 71% of my generation to the grid. At the same time I'm running a 3 phase GSHP feeding a buffer cylinder and hot water tank. To extend the life of my heat pump, I want to make better use of my solar PV and am looking at installing some sort of optimisation system.

    I'm quite keen on the Apollo Gem which I hear good things about. Unfortunately I'll need 3 of these (1 for each phase) and each independently feeding an immersion on one of the 2 tanks. Including the immersions and other bits and pieces, I think I'm looking at around £1,000 all in. Worth it?

    Does anyone have any experience of the gem or other products?
    • CommentAuthortony
    • CommentTimeFeb 12th 2015
    diy with a raspberry pi?
    • CommentAuthorringi
    • CommentTimeFeb 12th 2015
    What does the meter do if you use 9kw on one phase, but expert 3kw on each of the other two phase?

    How many kw does your heat pump take on it's lowest setting?
    • CommentAuthorskyewright
    • CommentTimeFeb 12th 2015 edited
    Posted By: tonydiy with a raspberry pi?

    &/or the Open Energy Monitor based
    on which I notice the comment "but I can also supply a system for diverting surplus energy in a 3-phase environment."
    • CommentAuthoraberned
    • CommentTimeFeb 23rd 2015
    Thanks for the comments. I wouldn't have a clue where to start with the raspberry pi tbh, and not sure I understand the 2nd question. The heat pump basically is on or off. It doesn't have settings. Think it's anout 4.5kW IT takes though. And I'll check out the other link thanks.
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