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Storage Tanks – Energy Buffer Tanks

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Using water or glycol as a heating fluid has great advantages. It is cost effective means to transfer energy from one source to another. The advantage of hydronic heating is also that its energy can be stored. In a simple radiant heat system we use concrete mass as a storage medium. However when we encounter houses with multiple heating requirements such as domestic hot water, in floor heat, fan coil radiators, pools and hot tubs, we need a method to harness the energy. This is done in a storage tank. The larger the storage tank, the larger the more energy we can store.

Storing energy is very useful especially in application such as cold climate heat pump, geothermal and solar thermal heating applications. For one it allows us to reduce the short cycling of the compressor by adding more mass to heat. FACT – shorter heat pump cycles (on/off) cost more energy and lead to sorter life. By having a larger mass to heat the compressor turns on and runs longer as it has more to heat up. This reduces operating costs and extends the compressor life span. An energy storage tank acts like a large battery an is also useful to offset the supply and demand cycles of heating. In the winter the days are sunnier and warmer and nights are colder and dark. So if you are using an air source heat pump or solar thermal system the system will have a greater chance to capture heat energy during the day and at night when the home needs more demand it will draw this demand from the storage tank.

In many cases an inexpensive water tank will suffice as a storage means however they lack the sophistication that a proper storage tank can provide. Dedicated geothermal, solar thermal or Air source heat pump tanks will help to maximize the energy performance including features such as higher insulation, immersion probes for temperature sensors and optional internal heat exchangers.

Our SolarStor and GeoStor Water tanks are made in USA and have the required seal for ULS and CSA standards to be used both as free standing energy buffer tanks or potable domestic hot water tanks. For more performance we also have the Thermo2000 EcoUltra Buffer Back up boiler tanks. These tanks are ideal for our Arctic Heat Pumps and can provide up to 29 kw of back up heating for large residential or commercial systems. With added features such as on demand hot water supply and full hydronic system control the EcoUltra is truly the only boiler buffer tank solution available in North America.

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Back up Heating Element

Hydronic heating systems are considered the most reliable forms to heat a home or shop. However seldom do they come with back up heat source. All our SolarStor and GeoStor storage tanks include a 4.5 Kw heating element that can be activate should a failure occur. For customers that need a complete backup solution the EcoUltra is the superior choice and pairs well with any cold temperature heat pump such as the Arctic Heat Pump. With available back up heating configuration of 3-29Kw, it can handle homes from 800-6000 square feet.

Internal heat Exchangers

All our tanks are available with a bottom and top heat exchanger to integrate different heating methods. A bottom heat exchanger is used to easily adapt to a solar thermal system to assist with the heating of the tank and reduce the energy costs even further. A top heat exchanger can be used move heat energy form the storage tank to heat a zone such as a pool or a hot tub. In either case the heat exchangers provide flexibility to expand a system in the future.

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Features

Geo-Stor/Solar-Store water storage tanks feature an optional 4500W electric element for supplemental heating on the 60, 80 and 119 gallon geothermal water storage models.

All models feature factory installed brass drain valves, factory installed T&P valves and 2 magnesium anode rods.

All models have porcelain glass fused-to-steel interiors. Porcelain glass is impervious to chlorine and caustics making it the ideal lining for the water storage tank.

All models include 2" of non-CFC, zero-ozone depleting R15 foam insulation.

Dual-coil heat exchangers are available on the 80 and 119 gallon solar water heater models to provide additional heat transfer capacity when operated simultaneously; or, one coil can be dedicated for use with a boiler as an additional heating source in the potable domestic solar water heating application or as part of a radiant heating loop.

All tanks come with PT ports that are immersed directly inside the tank. These ports are used for PT1000 temp sensors to get the most accurate temperature reading of the buffer tank.

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Download Storage Product Specs

GeoStor

GeoStor

SolarStor with Heat Exchanger

SolarStor with Heat Exchanger

eco ULTRA

eco ULTRA

Complete home heating system with Buffer Tank

Complete home heating system with Buffer Tank

Absolute Control over your Temperature

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835 Kapelus Dr. West St Paul, MB R4A 5A4, Canada