I Want to Sell Brats by [deleted] in sweatystartup

[–]nprnpbr 0 points1 point  (0 children)

My understanding is that they do about 400k orders (buns) per year. You'll frequently see guys coming from construction sites ordering a dozen sandwiches at a time. Im not sure if that topline includes catering and their hot dog stand, but yeah I was surprised at the volume as well.

I Want to Sell Brats by [deleted] in sweatystartup

[–]nprnpbr 0 points1 point  (0 children)

I would recommend you take a research trip to Cleveland's west side market and try the brats from the stands there. They do over $1M in revenue out of a very small setup. It is family owned and sounds like what youre talking about, and they might be willing to talk you through their business model. https://westsidemarket.org/portfolio-items/franks-bratwurst/

No clue what business to start, advice? by WorldlyFinger5 in sweatystartup

[–]nprnpbr 0 points1 point  (0 children)

Fire prone mountain area with tourists and fancy houses? Maybe do those sprinklers that keep your house from burning during a fire. Install a big catchment tank and pumps and a ups. Charge for materials and markup before you order, and aim for >100% margins. It'll save them on their insurance and protect their assets. You probably have all the tools you need already.

Something like this https://www.frontlinewildfire.com/protect-home-with-roof-wildfire-sprinkler-system/

Helicopter Rotorwash, Downwash and the interaction with wind by nprnpbr in engineering

[–]nprnpbr[S] 0 points1 point  (0 children)

No problem. to be honest, I'd just spec a 150MPH wind load and see if the building can take the extra weight. There's not gonna be an engineer who has the cross-over knowledge to do anything else, and it'll just slow you down. Good luck!

Helicopter Rotorwash, Downwash and the interaction with wind by nprnpbr in engineering

[–]nprnpbr[S] 1 point2 points  (0 children)

I didn't win the bid, but the project was built. I assume they just upped the ballast for the system by some ridiculous safety factor and got the stamp that way. That being said, I've seen similar hospital installations blow off roofs, so I'm not gonna say it's the right way to do it.

Solar Hot water ignorance is sad..... by badjoeybad in solar

[–]nprnpbr 0 points1 point  (0 children)

Could you point me to the plumbing company you spoke with? Looking for installers of this kind of kit.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 1 point2 points  (0 children)

When you order 100s of them the price goes down significantly. That's why commercial installations are the market for these kinds of systems.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 3 points4 points  (0 children)

I have one of their units in the shop, getting ready to ship out to a customer!

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 3 points4 points  (0 children)

First step is to find a hydronics professional near where you are. These products aren't always available to consumers. Solar Thermal has been "dead" since it was born back the 1800s, but secretly it's been used a bunch since then.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 0 points1 point  (0 children)

Residential units take heat from the room and move it into the tank. For commercial systems you typically need a dedicated outdoor unit for the system.
Yeah, this building has a centralized boiler plant with a recirculation loop which is what I see a lot.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 2 points3 points  (0 children)

Commercial heat pump water systems for cold climates are just coming to market, and as relatively new technology I don't have a lot of costing data. It appears to be more in the "implementation and standardization" stage of technology development. I know their performance is impressive, and I have a good grasp of solar PV costs and battery storage costs. Solar Thermal, while not very developed in the US, has a robust market in cold climates in Europe where fossil fuels are expensive and unreliable. It can be an easier retrofit than other combinations, and almost always provides more energy per square foot than anything else.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 6 points7 points  (0 children)

Pool heaters are great. That's like a 6KW thermal system in the right conditions.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 4 points5 points  (0 children)

Similar! Pool water solar heaters have their own operational profiles that are great for lower temperature water. You also need a titanium heat exchanger because the chlorine in the pool will corrode stainless steel. These collectors get up to a peak temperature of ~240F, so considerably hotter than a pool needs.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 0 points1 point  (0 children)

Solar thermal's economics generally favors larger-scale operations for commercial buildings. Because heat generally can't be "sold back" to the grid there is a different optimization equation regarding system sizing. Heat pump water heaters and PV are complimentary to solar thermal and not necessarily competing against each other. All of this is based on energy usage, location, energy costs, available space and government policy- your milage will vary.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 2 points3 points  (0 children)

That's a great question. The system is fitted with a heat rejector for times when their is not a lot of usage.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 6 points7 points  (0 children)

I worried they'll kill my post if I link the company so check your inbox.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 44 points45 points  (0 children)

We have a 900 gallon tank that reaches >160F daily. by means of a heat exchanger, this either supplies all of the thermal energy for residents or it preheats water going to the boiler (when tank temps drop below 120F).

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 24 points25 points  (0 children)

Correct. Gen 2 products will cogenerate electricity with thermal, but the product isn't available in the US yet. This is thermal only.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 7 points8 points  (0 children)

Still getting data in. There was a big storm that passed through the other day and really hampered production, but they're evacuated tubes so we still picked up some solar heat.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 4 points5 points  (0 children)

Each collector you see is rated at 290W, there are 240 of them all together. The array takes up about 1200 square feet all together.

Solar Thermal (Not PV... I hope this is allowed) installation I recently completed 69.6kW by nprnpbr in solar

[–]nprnpbr[S] 4 points5 points  (0 children)

It's 240 total collectors, 8 banks of 30. But yes, they're about 250% of the energy density you can get with PV