Keeping Computers (And People) Warm In Winter?
Grimwiz writes "Similar to a few of you, I have some of my computers on a UPS. However, the UK press have recently been warning that power supply interruptions are likely this winter and I've been pondering about upgrading my power protection from those few machines to include a few key house components. In particular, I need to ensure that the gas-powered (but electrically controlled) central heating stays working. I have reviewed a few solutions, including Solar / Photovoltaic or purchasing a generator
but they seem to be hugely more expensive than my simple UPS solution, although they do provide a much longer lasting solution than running off batteries. (A battery solution becomes quite expensive if I require more than an hours backup.)
My power requirements for a quiescent house is about 4amps @ 250V, and I'd like to survive at least 8 hours. What solutions do you recommend?"
Well, 4A @ 250v = 1000 W, for 8 hrs is 8 kWh. That's a lot, and would probably be very expensive to maintain with a battery-based solution. I'd say a generator would be the way to go.
It's quite likely that you don't need heat if your power interruption is only going to be 8 hours. During the Quebec ice storm we were out of electricity for 7 days. The house will stay decently warm for the first 2 days. It will be chilly for the next 2 and getting cold after that. But even after 7 days the appartement was still above freezing in weather that was always a little below freezing.
My recommendation: don't sweat 8 hours of power failiures.
That said, if you really need electricity, say to prevent perishable from going bad your best bet is a generator essentially because it's easy to refuel and keep going for days. You also get decent power in relatively small packages.
or more generally, invest in good insulation for your house. It'll pay for itself in saved heating even if you never have a power-outage, and if you do lose power for a while, your house will stay warmer longer.
If your gas furnace's blower and exhaust fans run on electricity, which I'm pretty sure they do, you're not going to get more than a minute or two out of a UPS. Those big fans push a lot of air and draw a lot of power. If you're really worried about staying warm, get a propane space heater and a 20lb tank. It will be enough to keep a room or two warm for a couple days.