What is the meaning of dowtherm?
Dowtherm A is a eutectic mixture of Diphenyl Oxide and Biphenyl, which is the most widely used heat transfer fluid in the world. Dowtherm T is a liquid phase heat transfer fluid for moderately high operating temperatures from -10°C to 288°C.
Which Following is the properties of DOWTHERM A?
Four important properties that help determine the viability of a heat transfer fluid in a particular applica- tion are stability, vapor pressure, freeze point, and viscosity. These are discussed below. DOWTHERM A fluid possesses unsurpassed thermal stability at temperatures of 750°F (400°C).
How do you heat up dowtherm?
Units are heated by burning gas, oil, and coal, as well as by electricity. Also, in certain operations, DOWTHERM fluids can be heated by high pressure steam. This latter technique is used on jacketed vessels where pressure limitations require the low pressure of DOWTHERM fluids.
How is dowtherm used?
The most thermally stable synthetic organic heat transfer fluid, designed for high temperature heat transfer applications up to 400°C (750°F) as well as to collect, transport and store heat in CSP systems. This fluid can operate in either liquid or vapor phase.
Is DOWTHERM A flammable?
Instead of steam, Dowtherm is used as a heating medium. Unlike steam, this liquid is heated to approximately 600 Degrees F. and operated at a low pressure of 30 psig. At ambient pressure and temperature, Dowtherm is not flammable because it has a flashpoint of approximately 400 Degrees F.
Why is dowtherm a safety hazard?
May spread fire. Unusual Fire and Explosion Hazards: Violent steam generation or eruption may occur upon application of direct water stream to hot liquids. Liquid mist of this product can burn. Flammable concentrations of vapor can accumulate at temperatures above flash point; see Section 9.
Is dowtherm hazardous?
Highly toxic to fish and/or other aquatic organisms. Eye Contact: May cause slight temporary eye irritation. Skin Contact: Repeated contact may cause moderate skin irritation with local redness. Skin Absorption: Prolonged skin contact is unlikely to result in absorption of harmful amounts.