Heat transfer fluid for solar heating systems

Anti-Freeze	Optimum Flow	Non Toxic	Biodegradeable	Corrosion Control	Quality Assured



SOLARIS DTX has been especially formulated to exploit the advantages Ethylene Glycol has over Propylene Glycol. Specifically;

• More efficient heat transfer.
• Easier to pump, especially at low temperatures.
• Less volume for the same freeze protection.
• Cheaper per litre.

Although based on Ethylene Glycol, SOLARIS DTX has been tested and classified as Non-Toxic1 by an EPA2 certified laboratory. Previously Propylene Glycol was the only non-toxic glycol available. That is no longer the case.3

Hydratech in alliance with Evans Cooling Systems, Inc. have developed and patented the DeTox™ additive. DeTox™ prevents Ethylene Glycol from being metabolised (during digestion) into toxic by-products, which cause kidney failure, blindness and death.4 Tests carried out on SOLARIS DTX confirmed the toxicity was “so low that it was impossible to determine an LD505 value”.

The DeTox™ additive has very little effect on heat transfer or antifreeze performance. In fact similar volumes of SOLARIS DTX or Ethylene Glycol are required to achieve a specific freeze protection.

SOLARIS DTX is able to operate efficiently at ≤170°C for prolonged periods and withstand temperatures of 200°C for short periods. It contains reversibly evaporisable inhibitors that are capable of withstanding stagnation temperatures of 300°C whilst protecting all metals used in Solar systems.

SOLARIS DTX also contains a high temperature rated polyacrylate, formulated to prevent sludge precipitation and scale formation. Thus promoting long operational life and high thermal efficiency.

SOLARIS DTX mixtures are readily biodegradable (90% over ten days) and will not remain in the environment or bio-accumulate.

SOLARIS DTX is miscible with water in all proportions and can protect Solar Thermal Heating systems down to -55°C depending on concentration.

SOLARIS DTX exhibits super-cooling characteristics and mixtures containing in excess of 55% by volume do not freeze solid, alleviating any concern over possible expansion and burst damage.

SOLARIS DTX is a clear, slightly viscous liquid. It is mildly sweet to the taste and has a non-pungent but characteristic aroma.

As per BSRIA guide AG 1/2001.1 all pipe-work systems should be clean and free from biological contamination prior to commissioning.

To minimise corrosion air 6 ingress should be minimized. A pressurised system is best.

SOLARIS DTX is a concentrate Heat Transfer Fluid. It can be diluted with demineralised or Ultrapure™ water to achieve various freeze protection temperatures. In order to maintain system integrity only top-up with SOLARIS DTX.

Prior to dilution determine the system volume. Then add sufficient SOLARIS DTX according to the minimum ambient temperature expected. A minimum of 35% volume (v/v) is recommended.

E.g. 35% v/v SOLARIS DTX will provide -20°C protection, as might be expected for the UK mainland. Versus 40% v/v for Propylene Glycol based mixtures.

45% v/v SOLARIS DTX will provide -30°C protection, as might be expected for the Scottish Highlands. Versus 50% v/v for Propylene Glycol based mixtures.

Health & Safety: Please refer to the associated Safety Data Sheet.

Shelf Life: 3 years when stored in sealed containers out of direct sunlight.

Available in: 5, 10, 15, 20, 25, 205 & 1,000 litre containers and in bulk tankers.

SOLARIS DTX can also be supplied pre-mixed, as a Ready-To-Use solution.

SUREFLOW Support Services ensure that end users and distributors receive the full benefit of working with a specialist manufacturer. E.g.;

• Fluid Maintenance Program; for the proactive verification of fluid and system condition.

1 According to the Hodge & Sterner Toxicity Scale, an LD50 rating between 500 – 5,000 mg/kg body-weight (bw) is classed as “Slightly Toxic” and anything above 15,000 mg/kg bw is classed as “Relatively Harmless” I.E. Non-Toxic.

2 EPA = United States Environmental Protection Agency.

3 SOLARIS DTX LD50 (Oral Rat) >21,000 mg/kg bw.
Propylene Glycol LD50 20,000 mg/kg bw.
Ethylene Glycol LD50 4,700 mg/kg bw.

4 According to the US Department of Health & Human Services as little as 150ml of Ethylene Glycol can lead to death and much smaller amounts can lead to renal failure in humans.

5 LD50 = Lethal Dose (oral) that causes the death of 50% of the lab rats.

6 Oxygen feeds the corrosion process and consumes inhibitors.

	Ready-To-Use Heat Transfer Fluid, based on Solaris DTX blended with UltraPureTM water to achieve a frost protection of -20OC.

	Non-Toxic High Temperature Rated Heat Transfer Fluid, with Antifreeze function, based on Propylene Glycol blended with BS6580 proven corrosion, scale and biological inhibitors.

	Ready-To-Use Non-Toxic Heat Transfer Fluid, based on Solaris PGC blended with UltraPureTM water to achieve a frost protection of -20OC.