Solar water heating tanks or other indirect tanks with coil heat exchangers can be used for domestic water heating with Chiltrix air to water heat pumps if they have a proper design. Chiltrix also offers a totally unique ultra-high performance stainless indirect tanks designed specifically for air to water heat pumps, the DHW105, DHW80, and DHW40.
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Super-Efficient Heat Exchanger Tanks (Ultra-High Performance All-Stainless Steel Tanks)Produced by Chiltrix for maximum performance with a heat pump, these tanks have a giant, oversized, convoluted coils. Inner tanks use 2205 Duplex stainless steel for maximum corrosion resistance, outer tank is SUS 304 stainless steel. |
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| 70 Gallons All-Stainless Heat Exchanger Tank, 1x 66 Ft. * 1.25" single-wall convoluted coil, DHW80 has 75 gallons net Spec Sheet |
| 35 Gallons All-Stainless Heat Exchanger Tank, 1x 34 Ft. * 1.25" single-wall convoluted coil, DHW40 has 36 gallons net Spec Sheet |
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| 93 Gallons Reverse-Indirect DHW Tank All-Stainless Heat Exchanger Tank, 1x 196 Ft. * 1.25" single-wall convoluted coil, DHW105 has 93 gallons net Spec Sheet FOR USE WITH CX50-2 and CX35 ONLY. |
The Chiltrix line of 2205 Duplex stainless inner tank offers the highest corrosion resistance of any available stainless steel tank material. The Chiltrix DHW80 tanks (75 gallons net of coil) and DHW40 (36 gallons net of coil) are designed to outperform every indirect heat exchanger tank or solar tank on the market, with .43 ft^2 per gallon of coil surface area, the fastest heat transfer, and truly exceptional durability. The DHW 40/80 tanks convoluted coil also disrupts laminar flow for a further increase in thermal performance.
See Hitzewelle DHW105 Reverse Indirect DHW Tank
^NOTE 1 generally, the DHW40 tank is for an ADU or tiny house, 1-2 occupants. Tank size is not linear to apparent capacity, meaning, for example, reducing tank size by 50% reduces the number of supported occupants by more than 50%,
*NOTE 2 DHW40 is not compatible with CX50. This tank is best used with the smaller sized CX units.
See the difference between a standard coil and a convoluted coil here
See pictures of DHW80 stainless steel indirect water tank
About Duplex 2205 Stainless Steel
Automated Anti-Legionella Function
*IMPORTANT NOTE*
Adding DHW always requires adding a Chiltrix DHW valve.
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FREE WATER HEATING!Yes, you can get up to 70% of your domestic hot water heating for free by leveraging the COP of the CX34 air to water heat pump.For example, with a COP of 3.3, that means you get 3.3 kWh of water heating for each 1 kWh of energy input, a 70% savings compared to a standard water heater.
DHW80 /DHW40 All-Stainless Steel Ultra-Efficient Heat Exchanger (Indirect) Tanks * 2205 Duplex Stainless Inner Tank / 304 Stainless Outer Tank + Convoluted (Wave) Coil * K Value 16W/M^2*K * Perfect for air-to-water heat pumps, boilers, or solar thermal tank applications * Heavily Insulated 50mm Poly * DHW80 80 Gallons (75 Gal. Net)
See pictures DHW80 stainless indirect water tanks
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