Solar Water Heaters |
Solar Wand(TM) - Solar Heat Exchanger, Long (Patented)
$599.00
SKU: SW-46
Solar Wand-Long 46" solar heat exchanger -- fits most 58" tall gas and electric tanks.
The Butler Sun Solutions, Inc. Solar Wand™ is an efficient and inexpensive heat exchanger that converts a conventional hot water heater tank into a solar hot water storage tank. It allows you to convert your existing conventional hot water system to a solar system without the expense, extra space requirement, or hassle of purchasing and installing a new or additional tank.
The patented Solar Wand™ drops and screws into the standard hot water outlet port on the top of your existing water tank, causing no change in normal tank operation. Solar-heated antifreeze solution circulated through the interior of the wand warms the wand up so it heats the water in the tank directly. The tank’s normal heating system remains active so you are never left without hot water, even if the solar heat is depleted after several days without sun or during times of excessive hot water usage. The Solar Wand™ features double-wall construction so that a leak in the antifreeze loop cannot contaminate the water in your tank. The Solar Wand™ is lead-free, built of copper, and is designed to last a lifetime!
Features:
- Simply screws into your existing water tank – no complex plumbing or soldering
- All copper construction – built to last a lifetime!
- Enhanced heat transfer surface improves heat transfer to the water and increases solar system performance
- Spiral fluted outer surface sheds mineral buildup so performance stays high
- No heat losses from the solar wand, since it is inside your tank
- Double-wall construction – a leak in the antifreeze loop cannot contaminate the water in your tank!
- Patented design with over 1800 system-years of demonstrated successful operation!
- Adapts to most existing hot water tanks
- Does not disturb normal tank thermal stratification (hottest water at the top and coldest water at the bottom of the tank)
- Suitable for single-tank and two-tank (solar preheat) systems
- Can be used with any type of solar collector (flat plates, evacuated tubes, even concentrators)
- Can also be used with fireplace boilers, hydronic heaters, or heat pumps
Advantages Butler Sun Solutions Over Competing Systems:
- Solar Storage Tanks with Built-In Heat Exchangers: These are expensive, heavy, and bulky to install. They also require that you buy a whole new tank system when any part wears out. With the solar wand, installation is quick and easy and you can move the solar wand to a new, inexpensive tank of your choice when your old hot water tank wears out.
- Externally-Mounted Solar Heat Exchangers: These systems require an extra pump and controller to move the tank water through the heat exchanger. Besides the cost of the pump, extra electrical power is needed and heat losses are increased from the external plumbing. Also, pumping the tank water through a heat exchanger causes mixing in the tank, so the tank does not stay stratified. This leads to lower-temperature water being delivered to your house and reduces the performance of the solar collector system. The BSSI solar wand heats the water in the tank directly, so it uses no extra power, and it keeps the tank thermally stratified (hot water at the top, cold at the bottom) so the water heats up faster and the hottest water is delivered first when you turn on a hot water tap.
SPECIFICATIONS:
| Description: | The BSSI Solar Wand™ is a solar heat exchanger that is installed in a conventional hot water tank to convert it to a solar hot water storage tank |
| Heat Exchanger Type: | Double-wall, protected – American Water Works Association (AWWA) Designation |
| Materials: | Copper, brass, & braze/solder (all lead-free) |
| Connections: | |
| To Tank: | Threaded, ¾” Male NPT |
| Hot Water Outlet Port: | Threaded, ¾” Male NPT |
| Solar Fluid from Collectors (Top Connection): | Hose, 3/8” (9.5mm) ID |
| Solar Fluid to Pump (Bottom Connection): | Hose, 3/8” (9.5mm) ID |
| Dimensions: | ||
| Model Number: |
SW-36 |
SW-46 |
|
Overall Length: |
46.5” (1181 mm) |
56.5” (1435 mm) |
|
Distance from Bottom of Wand to Top of Mounting Threads |
36.5” (927 mm) |
46.5” (1181 mm) |
|
Height Above Top of Tank |
10” (254 mm) |
10” (254 mm) |
|
Heat Exchange Surface Area: |
1.56 sq.ft |
2 sq.ft. |
| Nominal Operating Temp.: | 120º-220ºF (50°C-105°C) |
| Nominal Solar Fluid Flow: | 0.5 to 1 gpm |
| Maximum (Proof) Pressure: | 125 psi (0.86 MPa) |
| Nominal Operating Pressure: | 0-25 psi (0-0.17 MPa) |
| Hot Water Outlet Flow: | 18 gpm @ 40 psi (~2 gpm restriction) |
| Typical Operating Conditions (SW-46): | |
| Input Solar Fluid Temperature: | 200 ºF (93°C) |
| Output Solar Fluid Temperature: | 182 ºF (83°C) |
| Solar Fluid Flow Rate: | 0.5 GPM or 4 lb/min (1.9 Liter/min) |
| Thermal Power: | 4,320 BTU/Hr (1266 Watts) |
| Peak Operating Conditions (SW-46): | |
| Input Solar Fluid Temperature: | 240 ºF (115°C) |
| Output Solar Fluid Temperature: | 205 ºF (96°C) |
| Solar Fluid Flow Rate: | 0.5 GPM or 4 lb/min (1.9 Liter/min) |
| Thermal Power Transferred: | 8,400 BTU/Hr (2461 Watts) |
| Certifications: | |
| SRCC (Solar Rating Certification Corp.): | OG-300 |
|
IAPMO (International Association of Plumbing and Mechanical Officials), Uniform Solar Energy Code, Listing: |
5663 |
| Warranty: | Lifetime |
| Patent: | United States Patent Number 6837303, “Internal Water Tank Solar Heat Exchanger”, issued January 4, 2005 |
Price: $599.00
Weight: 8 lb
Dimensions: 57 in × 3 in × 3 in