John C Daley wrote:Couple of questions;
- What is a basement apartment
- What is delta
- What temperature do you actually want?
- If the thermostat is set at 55, why is the room 62?
should work... there are a lot of variables to figure out how much energy it would take to get your delta t though. A 48 volt element with say 3x 60 cel 300 watt panels connected in parallel would be a good start. Their peak voltage under load is about 40 volts. You would want a dc rated thermostat as wel to controll the tank temperature so you dont overheat the water... fuses to not overload the wiring...
j sigs wrote:Hi all,
First off, may apologies. I didn't know where to post this. Also, I always try to do some research before I post so I don't post redundantly but I couldn't find anything.
I live in a basement apartment in Connecticut (Zone 6). It's about 8400 cuft (30*40*7) of open studio space. We have oil heat here with baseboard hydronic and I'm trying to reduce the oil bill and mostly, be warmer. The thermostat hangs out around 60-62 during the day. It's set at 55. So naturally, it's about 62 down here. 66-67 is super comfortable down here. I'm only looking for a Delta of about 4-7 degrees.
If you are familiar with David Poz on Youtube he did a comparison of PV vs. Solar Thermal a few years ago. He uses both technologies to heat their respective 55 gallon barrels with about 50 gals of water in them. For the PV he wires direct to a DC 48v 1500 watt water heater element. WIth direct wiring the heating element only gets powered when the panels are generating enough voltage to power the element. Both of the barrels are outside in February behind his solar array. He insulates both barrels with some foil faced insulation, I didn't catch the R value, sorry. After a few days he's getting temps in the 150-160 range with the PV system. Keep in mind, these are outdoors, in February in Massachuesetts.
Here's a link to one of the videos in the series he does about PV vs. Solar Thermal: https://www.youtube.com/watch?v=KVeGummoXS0&t=2s
My thoughts are this. I basically want to do the same thing but the barrel will be inside. I'm not going to insulate the barrel. I might put a fan lightly blowing some of the heat that radiates from the barrel off of it. The water temp should get higher seeing the barrel is indoors. I realize the barrel temp dips when there's less sun.
But am I wrong to think that this will raise the temp of my apartment? I'm just trying to think this through.
Thanks in advance!
oil heat and crunch the numbers on switching to cheaper, cleaner gas heating. Last winter, heating a house with oil cost an average of $1,700,
while natural gas averaged less than $900, according to the US Energy Information Administration.