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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 12, 2025
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Topics: 17 / Replies: 2075
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RE: What do we need to know before installing a heat pump?

No, you didn't misread, that is correct. Interestingly, the Midea kWh out is probably not dissimilar. The current lifetime energy out figure is 35,600...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

Thanks for your pertinent questions. Answers, as best I can: It is outside, but the external pipe runs are short, perhaps 6ft flow and 6ft return an...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

I agree that is what the Engineering databook shows (page 45, 9050W to confirm we're on the same page) but I am not sure what the max/norm/min rows re...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

Here's a rather ugly chart from the data logger's software showing the kitchen room temp during the overnight setback to 16 degrees on the room stat 2...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

Thank you all very much for your comments which I will reply to shortly. In the mean time, here is some data from the recent power cut, which by coinc...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

You're right, I should have labelled the axis, I hoped the title was enough, and it allowed a slightly larger plot area. Yes, it is kWh/week. I w...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

I like to imagine I get the distinction most of the time, but the use of power (kW) for heat loss and energy (kWh) for energy use does leave me easily...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

No, as I said in the post, I applied a curve (distribution) derived from recent weekly readings to the annual oil use. Note that the first chart is en...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

Interesting, I stupidly didn't do that calculation. My calculated heat loss, done for the heat pump installation, is around 12.3kW, but that is also a...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

The Met Office WOW website I mentioned has that. You need to register to download the data, but it is free to do so (csv format). I do it once a month...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

I certainly welcome any such attempt! I think it may be considered an interesting case, often it is the anomalies that lead to better understanding, s...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: What do we need to know before installing a heat pump?

The heat energy used (energy in) is measured, and accurately (meter on the oil delivery tanker, external dedicated kWh meter for the heat pump). The h...

2 years ago
Forum
Government Schemes, Regulations, Planning & Organisations
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