Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchA DIY outdoor demonstration reported by Hackaday used a wood-fired barrel stove and a long copper coil to warm flowing water. The reported outlet temperature was substantially higher than the inlet, but the figures describe one project—not a rated appliance or independently validated performance test.
How the wood-fired water heater works
The setup is a basic heat exchanger. A fire heats a steel barrel stove, and water flowing through copper tubing wrapped around the barrel absorbs heat from the hot surface. In the project described by Hackaday on February 8, 2023, HowToLou used 100 feet of quarter-inch copper tubing and supplied it with water from a garden hose.
As an Amazon Associate I earn from qualifying purchases.
The arrangement was presented as an outdoor demonstration, with a hot shower as the practical idea. It illustrates how a long coil can transfer heat to moving water; it does not establish that this particular arrangement is suitable for household installation.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →What the reported figures show
Hackaday reported 41°F inlet water, 105°F outlet water, and a flow rate of 0.67 gallons per minute for the demonstration. These are figures reported in the project account, not independently verified test results or a promise of what another build will deliver.
#1 Best Overall
- HIGH-QUALITY WITH OPTIMUM SIZE: The Turkish samovar camping tea kettle is made of high-quality tin plate that provides a minimal design, long-lasting, and durability. The capacity is 135.2 oz (4 lt) and it is great for family gatherings.
- INSTRUCTIONS TO USE: 1. Add water in the upper part of the samovar. Do not light a fire before adding water into the upper part. Light a fire using wood or charcoal in the lower part of the samovar. 2. When the water in the upper part of the samovar starts boiling, pour the boiled water into the top container or the smaller teapot section of the samovar and add tea leaves on top. 3. Fill in the upper part of the samovar with drinking water again and wait until it boils in low heat with the top container on top.
- BURNED WITH WOOD & COAL: ELECTRICITY is NOT NEEDED. The samovar pot is burned with wood, charcoal, or coal. It is perfect for heating water at camping, picnics, hunting, and other outdoor activities.
- LIGHTWEIGHT & PORTABLE: In addition to the quality of the production material, it is lightweight and easy to carry it, thanks to the removable parts, to gardens, picnic areas, forests, boats, hiking. The item has 5 parts. Reservoir for fire, water tank with the single tap, flue and the water tank cover with a place for a teapot (teapot not included)
- TURKISH TEA PLEASURE: You will experience the most delicious Turkish tea with the warmth of wood and coal in the open air. Enjoy the taste of tea or a hot drink anywhere with this handy gear. It's a mix of tradition and practicality, bringing warmth and flavor to your adventures.
The article also attributes an estimate of roughly 21,000 BTU per hour of heat transfer to Lou’s calculation. That is a calculated estimate, not a separately documented measurement. Actual results would depend on conditions the account does not establish, so the reported values should be read as specific to the demonstration.
Materials, cost and the limits of the account
The reported coil material was quarter-inch copper tubing. Hackaday said the tubing cost $55 for this build at the time of publication in 2023; that is a historical project cost, not a current price or a quote for a comparable product today. The article does not name a tubing brand or establish a pressure rating or suitability for potable water.
Rank #2
- Pool Heating Capacity: up to 23,800 gallon 300 kBtu/hr fresh pool based on 60°C (140°F) temperature difference between incoming heating and heated water
- Fully made of high grade anti-corrosion stainless steel 316L for swimming pool, spa, hot tub with chemical treatment.
- This unit comes with 1 year warranty.
- 2" FPT opposite side for pool water and 1 1/2" FPT for hot water
- Various applications: Pool/spa/hot tub heating, outdoor wood furnaces, hydronic heating, forced air heating, floor radiant heating, snow melting, solar water heating
Lou reportedly expected that doubling the tubing could increase heat transfer, but the account does not provide a quantified comparison showing what a longer coil would achieve. Treat that as an expectation, not a tested performance result.
Why this is not a household water-heater guide
The project account is not a safety standard, installation manual, or code review. It does not establish which building or plumbing requirements apply, whether the coil is appropriate for a particular water supply, or what controls and safeguards a safe installation requires. A garden-hose-fed outdoor demonstration should not be treated as construction guidance for a domestic hot-water system.
Rank #3
- TURKISH TRADITIONAL CHROMIUM STEEL WATER HEATER & SAMOVAR
- DIMENSIONS: Hot water reservoir volume: 4 liters (150 oz) Height: 45 cm (17.7") Diameter:30 cm (11.8")
- DESCRIPTION: - Traditional Turkish Samovar - Usable with wood/kindling or coal - Has metal handles - Has a hot water tap - Samovar is used to boil water and brew tea using the teapot on top - The top compartment can be removed so that the bottom part can be used as a BBQ - Keep heat for a long time - It is very useful in tents, campers, boats etc
- (NOT INCLUDES TEAPOT )
Anyone considering a real installation would need advice and requirements specific to the location, water system, and intended use; the demonstration alone cannot answer those questions.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
