bogdan smith

I think the temperature in the flask needs to be raised for the heat exchanger to work more efficiently. I could probably wrap it in 25mm of kaolin wool, secure it with wire, then wrap it in foil and secure it with foil-covered tape. Just keep in mind that the flask needs to be removable, so the insulation will need to be in two pieces. I found the remains of an old hair dryer and checked the fan. I want to insert it into the pipe and connect it to the air supply on the side of the stove to supply oxygen directly to the fire.

The window protection is ready, and I also installed supply and exhaust ventilation.

The blackouts continue, with no power for 18 hours at a time. Thank goodness the problem has been fixed, and it was a very simple one. The return and supply pipes were mixed up. An additional pump was also installed in the distribution panel as a backup in case the pump near the furnace fails. A temperature sensor with a thermostat is installed on the pump near the furnace to stop the pump if the furnace cools down. I tried the three-way valve option, but the best option is to warm up the system with a gas boiler and then start the furnace with the heat exchanger already hot. For now, I'm testing on light settings and haven't pushed the furnace to its maximum. As long as there's gas, I'll keep the furnace running this way. If the gas is turned off, I'll remove the heat exchanger and use the furnace without a water circuit.

M Ljin wrote:Plexiglass, maybe two layers? Also known as acrylic sheets. That is a glass-like plastic that bends and flexes. I have used it for a greenhouse covering with success.

If it breaks it is unlikely to be nearly as dangerous as glass.

You are absolutely right about the danger of glass. I will make a wooden shield from oak inside, and if necessary, I will make a stop for bags of cement or sand.

bogdan smith wrote:

Anne Miller wrote:

bogdan smith wrote: I need to protect it from shock waves and shrapnel, as one pane has already been broken..

If that were my Bomb Shelter, I would remove the window entirely.  On the outside I would fill the gap with brick and mortar or concrete as if the window was never there.

On the inside I would frame the opening, fill with insulation and cover with sheet rock or paneling of some sort.

Just what I would do ...

Absolutely the right decision, if the situation worsens, I will fill this opening with sandbags.

I have several bags of old hardened cement, I can use them to fill the window opening on top of the metal sheet

Anne Miller wrote:

bogdan smith wrote: I need to protect it from shock waves and shrapnel, as one pane has already been broken..

If that were my Bomb Shelter, I would remove the window entirely.  On the outside I would fill the gap with brick and mortar or concrete as if the window was never there.

On the inside I would frame the opening, fill with insulation and cover with sheet rock or paneling of some sort.

Just what I would do ...

Absolutely the right decision, if the situation worsens, I will fill this opening with sandbags.

The electricity is low and comes late in the evening, so for now I've converted an old grate into a firewood basket.

Gary Numan wrote:

Tape is a myth 1

Tape is a myth 2

Tape is a myth3

Tape is a myth4

Thank you, very interesting information. When the war started, everyone covered their windows with tape and opened them.

r ranson wrote:paper tape was very common and successful in london in WW2.  You can see the star shape pattern in old movies.  Goes around the edge, then corner to corner, then top to bottom, then side to side.

Modern equivalent might be window film as some advertise for commercial property and reducing breakage.  

As a side note, WW2 bomb shelters (and ones in the Cold War) sometimes had the problem of bad air.  If you do fix the window, a battery powered CO (carbon monoxide) monitor and ability to open the window might be useful.  CO in a small space can kill as quickly as a direct strike.  You probably already know this If you are living in a place that needs a bomb shelter.  Mostly, I'm writing for future readers.  

Thank you! I'll definitely take your advice about the sensor. I need CO2 and carbon monoxide monitoring because there's a furnace there. For ventilation, I cut 160mm holes and will install forced ventilation. I have pipes and a fan. Unfortunately, tape and film probably won't help. A drone crashed into a house on the neighboring street, and I saw what happened to the windows and surrounding metal. If I were building a house now, I'd definitely install metal shutters to protect the windows. But in any case, all options must be explored. I'll definitely look into film options.

Judith Browning wrote:hi Bogdan,
I'm no help reinforcing a window, just wanted to say how we feel such sorrow that you are having to spend any time at all working on a bomb shelter....

Praying for a FAIR and peaceful solution soon for Ukraine💜

Thank you, everything is fine. I perceive this situation as a quest, and in this game I meet characters who really help me. When I was dragging this piece of metal on my bike and I couldn’t secure it securely, a stranger helped me and everything worked out. Everything will be fine. The most important thing is not to give up.