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Solar Domestic Hot Water System

Use excess solar heat to heat your home and garage

Our WSE58 have received CSA378 and qualify for Federal and Provincial Rebates ( we are currently working on paperwork but testing is completed )

 

 WSE is proud to introduce our solar domestic water system designed and manufactured in Canada for Canadian climates.We designed it to work in Saskatchewan so it will operate anywhere.

 

Solar hot water is one of the most immediately cost-effective uses of renewable energy.

Hot water represents the second largest energy consumer in Canadian households.

A typical 300 liter electric hot water tank serving a family of four will consume approximately 160 million BTUs in its seven year lifetime. This will cost approximately $3,600 CDN(at $0.08 per KWH), not accounting for fuel cost increases. An investment in a solar water heating system will beat the stock market any day, any decade, risk free. Initial return on investment is on the order of 20 percent, tax free, and goes up as gas and electricity prices climb. Many provinces have tax credits and other incentives to sweeten those numbers even more. What are we waiting for? Forget the stock market. If you have invested in a house, your next investment should be in solar hot water.

How Large a Solar Hot Water System Do You Need?
Hot water usage in the Canada is typically 55–110 liters per person per day for home use. This
includes primarily bathing, clothes washing, and dishwashing. But your commitment to efficiency has a lot to do with your actual usage.
The hot water tank is usually sized to handle one day’s worth of consumption. So for a household of four, it would be reasonable to use an 300 liter tank based on daily hot water requirements of 75 liters per person per day.

OVERVIEW
In our basic solar heating system, freeze protection is accomplished with use of a non-toxic antifreeze solution in the collector loop. This fluid is circulated from the collectors through a heat exchanger to transfer the heat into a domestic hot water storage tank or dissipated
through various applications. The antifreeze is contained within a closed loop, so it never mixes with the domestic water.
These solar collector loops are set up very similar to conventional closed loop hydronic heating systems in your homes, which circulate heated fluid from a boiler throughout in floor pipes within your home. All components used in solar heating systems are generally recognized
by plumbing and heating contractors.

 

Download Solar Domestic Water Installation Manual

 

SOLAR PRODUCTION
To collect the suns energy and convert it into a heated fluid, 2- WSE 58 evacuated tube collector panels are used. 2 panels will produce approximately 5200 btu/hour in full sunlight. Flexible copper lines are used to join the collectors together and are also used for transferring the heated fluid from collectors to storage part of the system. For maximum efficiency, all lines that carry fluid should be properly insulated.
Note: Your application may require more or fewer panels.

Making the Most of Solar Energy
To make the most of the energy collected using the solar hot water system, the user should be aware of a few items. Solar energy production only happens as the sun shines. The time at which the maximum amount of solar energy is stored in the hot water tank is mid to late day. With this in mind, you can save the most amount of money (by using the solar energy) by limiting your use of hot water in the morning. Washing dishes, clothes and yourself will make the most of the free hot water in mid to late day.
It should also be noted that your regular hot water heater should be set to produce very little heat at the start of the solar day. If the hot water tank is allowed to continuously heat at the same time as the sun shines, you will not be able to transfer much of the suns energy into the tank, and most of the time, the heat will be bypassed through the dissapator, rather than transferred into the hot water tank.

DIFFERENTIAL CONTROL
To maximize the energy we get when it’s needed and available, we use the WSE solar controller to measure the suns energy and simultaneously measure the fluid temperature in the storage tank using thermistors. When there is sufficient energy in the collectors to add heat to the storage fluid, this differential controller starts your circulation pump and transfers the heated fluid to a storage tank or a heat exchanger. Controllers come with 3 temp sensors which allow users to monitor system temperature within solar collectors as well as storage tank temperatures.
CIRCULATION
Circulation Pumps are needed to transfer heated fluid from collectors to a means of storage or dissipation. Pumps are turned on and off by a differential controller. Pumps should be placed so they are pumping the coldest fluid in the system. The coldest collector loop is found after it has been circulated through the heat exchanger. Pumps should always be mounted so that the impeller shaft is horizontal.
HEAT EXCHANGER
The flat plate heat exchanger shown here is a liquid to liquid exchanger installed externally on a standard hot water tank. The purpose is to transfer heat from the solar heated fluid to the domestic water within the tank. Flat plate heat exchangers are very compact and very efficient. Many plates are sandwiched together with very small passages between each plate. One fluid is pumped through one WSE Technologies Domestic Hot Water side of each plate, and the second fluid through the other side. The heat exchanger shown here has been plumbed in parallel with the tank, the lower inlet of the exchanger connected to the bottom of the tank and the exchanger outlet leading to the upper part of the tank. When the hotter fluid on the solar half of the exchanger transfers it heat to the opposing side of the exchanger, a natural thermo siphon is created between the tank and exchanger. This thermo siphon draws the cooler water from the bottom of the tank, through the heat exchanger, and returns it to the top of the tank.
PRESSURE
The expansion tank is placed downstream from the heat exchanger, near the circulating pump, therefore on the the cold side of the loop. Pressure gauge is recommended to monitor system pressure and can be a direct indication of leaks. A pressure guage that registers in the range of 0-100 psi is adequate. It is always recommended that a pressure relief valve be installed in the system to protect the closed loop piping. A pressure relief valve rated at 50-75 psi is usually adequate. This valve is installed at the highest point in the system at the outlet of the collector(s). Automatic or coin vents must also be installed in the system. Vents are installed at the highest point, usually at the outlet of the collectors to allow air to escape.
DRAIN/FILL VALVES
Two drain valves need to be installed for purging and filling of the system. A check valve has been installed between the two valves. These drains are also used for future maintenance of the collector loop fluid. These valves have been installed downstream from the heat exchanger and just below the circulation pump.

WSE 4000 MOTORIZED VALVE


The purpose of this component is to direct the heat fluid through either the heat exchanger or the dissapator. The valve remains passive under normal operating temperatures, allowing fluid to flow through the heat exchanger, thereby heating the water in the hot water storage tank. It becomes active and diverts flow through a dissipater when set temperatures have been achieved within the storage tank. It acts as a high limit control, activated by the differential
controller to prevent overheating of storage tank. This valve can also be incorporated for purpose of zoning heat to different areas of a building, using a timer or thermostat.

WSE SOLAR DISSIPATER


The Solar Dissipater is installed in the system to dump excess heat that is being produced within the solar loop when storage tank has reached max temperature setting or during periods
of non-use. This protects systems from overheating. As the collector fluid passes through the dissipater, heat is dissipated via aluminum fins to surrounding air; the vertical fin arrangement
promotes passive air current.

 

 

 

 

 

System A  ( using solar energy as power source )

Utilizing WSE58 Pressurized Heat Pipes

     WSE58 evacuated 20 tube system                        info link

                   25 watt Solar Panel                          info link

                     Laing Solar Circulating Pump         info link

                      Dissipator and 3 way valve           info link

                     Heat Exchanger                             info link

               Temperature Controller and Sensor  

                 18 liter Expansion tank                 

      click here to get info and pricing

    If you do not need the dissipator , only use the 3 way valve reduce by

click here for pricing and information using solar energy source WSE58

 

System B  ( 110 volt system )

Utilizing WSE58 Pressurized Heat Pipes

     WSE58 evacuated 20 tube system         info link

                   Solar Water Heater Controller       info link

                     Laing Circulating Pump            info link

                      Dissipator and 3 way valve       info link

                     Heat Exchanger                        info link

                    18 liter Expansion tank 

              

      Click here for pricing and information regarding 110 volt WSE58 Solar Domestic Water Heating

 

System C   ( 110 volt system)

Utilizing WSE47 non pressurized evacuated tube system

 

Please note a the WSE47 system is a non pressurized system and will require some special plumbing and design considerations. But if price and return on investment are important , this is the system

  WSE47 evacuated 20 tube system                       info link

                   Solar Water Heater Controller         info link

                     Laing Circulating Pump                 info link

                      Dissipator and 3 way valve           info link

                     Heat Exchanger                           info link 

                    18 liter Expansion tank               

     

Click here for pricing and information regarding 110 volt WSE47 Solar Domestic Water Heating

 

WSE 58 Multi-Zone Heating System

Utilizing WSE58 Pressurized Heating Pipes

   This is a very popular application, utilizing domestic water heating and then using the excess heat as per this example to heat your home and or garage, utilizing forced air furnace in home and infloor heating in garage. Excess heat is burned off outside with dissipator.

Click here for pricing and information regarding WSE58 Multi Zone Heating Systems

 

WSE 47 Multi-Zone Heating System

Utilizing WSE47 non pressurized evacuated tube system

Please note a the WSE47 system is a non pressurized system and will require some special plumbing and design considerations.

 

Click here for pricing and information regarding WSE47 Multi Zone Heating Systems

 

Use our calculator to find out the cost to heat your particular building               click here

 

 

 

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Ready to order or have some questions?

Simply pickup the phone and call 1 306 244 8808

(Barry  ext 242 ) (  Brayden ext 239) (Lee ext 232)

If you need more information, you have two options

Click here to Contact the Dealer near you

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  Linda 1 306 244 8808 ext 226 or Email

Information about become a dealer click here

WSE Technologies
303 - 47Str. E
Saskatoon
Saskatchewan
Canada
S7K 5H2

Ph: 1 306 244 8808
Fax: 1 306 244-9970

We accept Visa and Master card.