The industry standard for solar fluid is a mix of propylene glycol and water. It's non-toxic, biodegradable and relatively stable. However, you should always mix as much water as possible with your choice of glycol product, as simple water is the ideal solar fluid.
Inhibited propylene glycol based heat transfer fluid formulated with USP grade propylene glycol. Product is intended for use in facilities where the possibility of incidental food / beverage contact exists. INTERCOOL® P-323 is USDA approved and is NSF approved under category (HT-1 & HT-2).
There is a difference in the mixing ratio, depending on whether it is ethylene glycol or propylene glycol. For ethylene glycol, the mixing ratios are typically 30/70 and 35/65, whereas the propylene glycol mixing ratios are typically 35/65 and 40/60. It is important that the mixture is frost-proof at the lowest operating temperature. (in Danish)
*Propylene glycol is toxic to cats, however, so don't let them drink it. Calcium Chloride. Calcium Chloride performs well as an antifreeze in earth loops. It is non-toxic but extremely corrosive. If this type of antifreeze is used, the geothermal heat pump's water coil heat exchanger must be cupro-nickle.
Color: Clear Propylene glycol-based fluid Propylene glycol-based fluid (96%) Water white Made with DOW PuraGuard™ Propylene Glycol USP/EP Low toxicity - complies with FDA and USDA regulations Operating range: 0 to 250° F for heat transfer 60° F for burst protection Heating, Ventilation & Air Conditioning (HVAC) Chill water & hydronic ...
Approved antifreezes include methanol, ethanol, propylene glycol, calcium chloride, or ethylene glycol. These antifreezes must be mixed with water, at concentrations of 20% or less. Geothermal heat pumps for a single family residence and the antifreezes for these units were evaluated by Heinonen et al. (1996).
Geothermal Supply Company offers propylene glycol to be used as antifreeze in geothermal loop systems. The type of propylene glycol provided is the same as that used as a moisturizer in medicines, cosmetics, food, toothpaste, mouth wash and tobacco products.
What Geothermal Fluid is Used in the Ground Loop? There are two commonly used types of fluids that can be circulated through the ground loop system. The Standard Geothermal uses a mix of water, antifreeze (Propylene Glycol), and refrigerant.
There are two basic types of glycol protection available for your closed-loop HVAC system: "burst protection" and "freeze protection." Burst protection is sufficient if the system will remain dormant or inactive when the temperature drops below freezing and there is adequate space to accommodate the expansion of an ice/slush mixture.
Our 100% propylene glycol is 100% biobased. The proprietary technology uses a catalytic process known as hydrogenolysis to readily convert glycerin into propylene glycol. The reaction between glycerin and hydrogen takes place at high temperature and pressure over a unique catalyst to produce propylene glycol and water.
Mono Propylene Glycol, commonly referred to as Propylene Glycol but also referred to as Propane-1,2-diol, MPG, PG and Food Safe Glycol. Propylene Glycol has for many years been the go-to glycol for use in food and beverage processing systems or where there is a requirement for a non-toxic classification.
TOTAL GALLONS WATER Propylene Glycol Calculation Sheet TOTAL 20% ANTIFREEZE Propylene Glycol & Methanol by Volume 3.02 0.00 100.00 ... Geothermal Supply Company, Inc ...
Water-propylene glycol mixtures dyed pink to indicate the mixture is relatively nontoxic are sold under the name of RV or marine antifreeze. Propylene glycol is frequently used as a substitute for ethylene glycol in low toxicity, environmentally friendly automotive antifreeze.
For many heat-transfer applications it is necessary to use a heat-transfer fluid with lower freezing point than water. The most common antifreeze fluid - ethylene glycol - must not be used where there is a chance of leakage to potable water or food processing systems.
EnviroGard™ Inhibited Propylene Glycol. Environmentally safe heat transfer fluid. EnviroGard™ inhibited propylene glycol based heat transfer fluids are categorized under Rhomar Water's Incidental Food Safe Glycol line of products. All ingredients in these products are GRAS and these products are NSF registered.
This Ingram's-only geothermal installation kit includes high density polyethylene piping, circuit insulated headers, propylene glycol, hose kit with ground source elbows, and the Geo-Pulse Non-Pressurized Flow Center.
As for contamination of the ground/water from a leak, all the brands of propylene glycol that I've seen (and used in solar systems) have anti-corrosives and other additives that the manufacture clearly labels as toxic. [ Though perhaps not as immediately dangerous as the median lethal dose of 4 oz for methanol ]
Hello, I'm in the process of building a floor heating system (well...not personally), and I already saw on many websites that it is recommended, in order to avoid freezing, to mix 50% water with 50% propylene glycol.
Ethylene glycol is the industry standard for closed loop freeze protection and is the product we use in most applications. Where food or potable water contact may be a concern, specify propylene glycol. Propylene glycol is less toxic, breaks down more rapidly and is more environmentally friendly.
Propylene glycol (PG) has become the most common heat transfer fluid used in closed-loop solar heating systems that contain antifreeze. It has a long track record over many decades in this application and is widely available from a number of sources.
propylene glycol vs. methyl alcohol in loop Anyway, a month ago I had the system flushed of the MA and filled with food grade propylene glycol, not only to ease my mind but to also satisfy a requirement by the state to receive a rebate.
Ethylene glycol is less viscous (less pressure drop) than PG. Both are more viscous than water. Low temperature make all fluids more viscous (look at your engine oil when cold). Your pressure drop calcualtion has to account for that! In hot systems (i.e. solar thermal) the viscosity of glycol mixtures is almost the same was water, no big deal.
Fast Water Heater no longer installs solar-powered water heaters. A solar hot water system turns the sun's energy into heat. A heating fluid, usually water or a food grade anti-freeze (propylene glycol) is circulated through panels that are usually mounted on the roof.
So what do we think are the essentials for a 5 ton geothermal installation? This geothermal installation kit comes with 10 gallons of ProTek PG Plus propylene glycol heat transfer fluid, the medium your geothermal unit will use to move heat in and out of your home. It has 3000 feet of high density piping.
GEO-FLOTM SAFE is a ready-to-install aqueous propylene glycol solution which does not exhibit the same tendency to thicken at low temperatures. Its viscosity profile is significantly lower compared to concentrated or pure propylene glycol across the temperature range encountered in geothermal system operations.
Glycol is a mystery fluid to many in the HVAC industry, but it is an essential tool for designing many different types of HVAC systems. In Canada, where glycol is essential to protect HVAC systems from freezing, most contractors have a basic understanding of why glycol is used.
A 20% propylene glycol solution that is intended for geothermal heat pump systems. SDS* TDS* DOWFROST™ HD: A formulation of propylene glycol and a specially designed package of industrial corrosion inhibitors. The fluid is dyed fluorescent yellow to aid in leak detection.
Glycol Heat-Transfer Fluids Ethylene Glycol versus Propylene Glycol Water is probably the most efficent heat-transfer fluid known. If it did not freeze, water would be the ideal heat-transfer fluid for cooling applications. When freeze conditions exist (<35 F), ethylene glycol and propylene glycol can be added to water to provide
The first time they were out here the temperature of the glycol concentration was measured with a refractometer from a sample in the pump and that is when it came back with a temperature of 25F. In the last visit when they came out, the incoming water temperature was 39F and leaving temperature was 36F.
Is a customized READY-TO-USE (premixed) inhibited propylene glycol based antifreeze. Contains food grade non-toxic corrosion inhibitor additives and propylene glycol. Is blended with DI Water ensuring low to no total hardness, chlorides and sulfates.