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Posts
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Joined
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Days Won
187
Everything posted by SteamyTea
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Who makes the refrigerant pump? It may be assembled in the UK, or a cheap Far East model with UK controls in it. Take the covers off and see where the bits come from.
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Do you mean a water source heat pump. As is one that pumps river, lake or sea water into a heat exchanger, then through a heat pump as normal. Or a ground source heat pump, but with the brine pipework in water, rather than the ground. You can calculate the energy in a fixed amount of water easily enough. 4.18 kilo joules x mass or flow in Kg x drop in temperature in K. It is the same as how much energy us needed to heat water.
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Is snow considered dry or no.
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At 11 plus minutes, it is too long. So not watched it.
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Heat output is joules per metre2, power output is watts per metre2. Small sounding difference, but important.
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Perfect time to get some levelling stakes in. Today was the first day that I got some washing out on the line for weeks. It rained, now it is a 60 MPH storm.
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Welcome Not sure what you mean by this. Do you mean timber frame/SIPs/clad light weight block/something else?
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This insurance business is odd. Has anyone claimed on it before the house has been signed off? I once bought £200 worth of vehicle cover, was great, covered everything, except when the car broke unexpectedly.
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Single Room MVHR
SteamyTea replied to Onoff's topic in Mechanical Ventilation with Heat Recovery (MVHR)
I keep seeing this, what is MQTT and why is it hard to set up. -
Single Room MVHR
SteamyTea replied to Onoff's topic in Mechanical Ventilation with Heat Recovery (MVHR)
Ordered one from PiHut, day before yesterday. They only let me have one, and it was the one without the pins soldered on. There is loads. I keep meaning to make my code a bit posher. Want to add the sensor ID so I don't have to muck about typing it in. I also recommend a real time clock and a USB to TTL cable, makes setting up dead easy. Have been having trouble setting up a static IP address on the latest version of Raspbian (Buster). They seem to keep changing the way this is set up. It really is the sort of thing that needs to be done in one text file, right at the very beginning. -
The important thing is what you played on it.
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Should i add stone cladding to house?
SteamyTea replied to Amateur bob's topic in New House & Self Build Design
I liked the 1980's, maybe because I was in my 20's. A quick DuckDuckGo brought this up. Vera Duckworth, a classy woman, had her house clad. There is advice on how to remove it. -
Single Room MVHR
SteamyTea replied to Onoff's topic in Mechanical Ventilation with Heat Recovery (MVHR)
Yes please. I could rig it up to @joe90's MVHR that I stuck a RPi on. -
Mvhr official testing
SteamyTea replied to Simon Brooke's topic in Mechanical Ventilation with Heat Recovery (MVHR)
Any help https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/456656/domestic_ventilation_compliance_guide_2010.pdf -
Single Room MVHR
SteamyTea replied to Onoff's topic in Mechanical Ventilation with Heat Recovery (MVHR)
https://randomnerdtutorials.com/micropython-ds18b20-esp32-esp8266/ Yes they can. -
Single Room MVHR
SteamyTea replied to Onoff's topic in Mechanical Ventilation with Heat Recovery (MVHR)
I have run 7 sensors on a 10 metre cable. I may have changed the resistor, can't remember which way though. As a RPI Zero W is only a tenner, may be easier to use a few more. Or use some ESP8266, pretty sure they can take a DS18B20's, can certainly take the DHTs. There is also the BME280's, they do temp, RH and pressure. What would be nice is a simple chart, one that can show all records, monthly, weekly, daily and hourly at the touch of a button, or a swipe of the screen. One problem with charts of a phone is that they are so small that they are hard to read. So may need stacked y-axis to show different sensors. Not sure how easy that is to do. -
Single Room MVHR
SteamyTea replied to Onoff's topic in Mechanical Ventilation with Heat Recovery (MVHR)
Consider DHT22s, they show the RH as well. It is easy to get the numbers showing, but I have not yet found any code (that I understand) that shows a real time chart. Seems that most of the stuff online wants to push it though a database package somewhere along the line. A nice, simple bit of Python is what is wanted, maybe @Ed Davies could knock some up for us all. -
More a case of not physically, or financially, viable.
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Not far off how north you are.
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When the sun is at a low altitude, it is passing though more of the atmosphere, that reduces the power. Not a lot you can do about that. When modules were expensive, I looked into, and did a few experiments with movable mirrors, was still cheaper to just add an extra module. If you have a ground mounted system, you could increase the angle, but you run the risk of getting shading. alternatively, you could lay the modules flat to the ground, that can increase yield, but not power much. Does collect more dirt on them.
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It all depends if you want to increase the probability of maximum power (the W) at a particular time, or maximum yield (the kWh) over the winter months. All you need to do is some fairly basic (but boring) trigonometry. Start by getting the azimuth and altitude angles of the sun.
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You will get the same nonsense answers wherever you put it.
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Use the same password for everything. I keep all my passwords in an encrypted file. Forgot the password. So that was pointless.
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Did you set a password when you first installed Mint?
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JFGI TL:DR https://www.fosslinux.com/2561/how-to-disable-keyring-in-ubuntu-elementary-os-and-linux-mint.htm
