Refrigeration

Non-Toxic, Green & Powerful

CRANE Temper

CRANE Temper represents a groundbreaking advancement in refrigeration technology, offering exceptional advantages for a wide range of applications. This ready-mixed, non-toxic organic salt solution excels in biodegradability, low viscosity, high specific heat capacity, and exceptional thermal conductivity, setting a new standard for environmentally friendly heat transfer fluids. Ideal for industrial and food refrigeration, CRANE Temper is available in seven versions, accommodating temperatures from -10°C to -60°C.

With exceptional thermal properties and low viscosity, CRANE Temper provides a uniquely efficient system, maximizing performance and reducing energy costs. Its effective corrosion inhibitor package ensures longevity and reliability of your refrigeration system, reducing maintenance costs and preventing downtime. CRANE Temper maintains its thermal properties over time, guaranteeing consistent performance and lowering operational costs. Backed by decades of practical application and continuous improvement, its superior thermal properties often result in a higher evaporator temperature compared to glycols, enhancing efficiency while minimizing environmental impact.

Choosing CRANE Temper means investing in a reliable product backed with comprehensive technical support to ensure your cooling systems remain efficient, reliable, and sustainable.

Key advantages at a glance

  • Nontoxic
  • Low viscosity
  • High thermal conductivity
  • Low freezing points
  • Chemically stable
  • Reduced installation and energy costs
  • Readily biodegradable
  • Adapted for the food industry
  • Advanced inhibitor technology
  • Personalised technical support

Areas of use, industries and installations

CRANE Temper can be used wherever a liquid Heat Transfer Fluid is required in indirect cooling, stationary or mobile installations.

Physical Properties
UnitT-10 T-15T-20T-30T-40T-55T-60
Densitykg / m3 1086111411421177120712401260
Specific heat KG/kg • K 3,5773,4473,3153,1243,0122,8172,820
Thermal conductivity W/m • K 0,5440,5250,5080,4860,4650,4410,440
Dynamic viscosity mPa • s 1,481,621,792,172,764,064,28
Kinematic viscosity mm²/s 1,371,451,571,842,293,273,40
Measurements are performed @ +20 °C
Thermal Properties Calculator

The main part of cooling and freezing is within food applications. MPG or 1,2-MonoPropylene Glycol is perhaps the most commonly used heat transfer fluid in those applications. Already at below -20°C the viscosity of MPG is very high and the energy demand increase significantly. Already @ -30°C, the viscosity gets too high for practical use in centrifugal pumps. A thumb rule is that at kinematic viscosity above 300 cSt, centrifugal pumps cannot be used. Other types of pumps are very expensive and inefficient. The calculations (Reynolds number, pressure drop and heat transfer coefficient) are made for circular tubes.

Performance

CRANE Temper’s excellent fluid properties in terms of viscosity, specific heat and thermal conductivity make it the ideal choice as Heat Transfer Fluid (HTF) at very low temperatures. The fluid properties not only enable users to use smaller pumps and heat exchangers but also significantly reduce total energy consumption. This applies especially at very low temperatures, as seen in the comparison between CRANE Temper and Glycol presented in the graph.

Kinematic Viscosity of Temper and Glycol

Corrosion Protection

CRANE Temper is a high-quality product based on potassium salts with an optimal concentration of corrosion inhibitors. The optimal corrosion package creates, and only when necessary, a local temporary and protective layer with a minimal (mono-molecular) thickness at the metal surface, which allows very good heat transfer. Together with your regular fluid status check-up (recommended once a year) the concentration of the corrosion inhibitor can be analysed to make sure it is at an acceptable level.

To quantify the corrosion protection efficiency, different corrosion tests are used. KRAHN Specialty Fluids has chosen the ASTM D1384 test, which is the most frequently used among heat transfer fluids. Figures in the table represent the change in weight before and after the test.

Corrosion-Test-Temper

Environment

CRANE Temper is readily biodegradable, nontoxic and non-flammable and does not contain nitrites, borates, phosphates, molybdates or silicates.

The freezing point depression substances in CRANE Temper contains mainly potassium acetate, which is used as food preservative and is more environmentally friendly than many of its counterparts. The properties of potassium acetate ensure it is less corrosive, has a lower toxicity level to fish, mammals and vegetation, meaning environmental impact is minimal.

Nontoxic to mammals

LD50 (oral, rat) > 5000mg/kg

Microtox

Not acute toxic

Non-toxic to aquatic animals

OECD TG 203: LC50/96 = 13 900mg/l

Readily biodegradable

OECD 301A: 99 % after 28 days

Do not bio-accumulate

Environment-Graph

Packaging

CRANE Temper is supplied in the following packaging, as well as bulk deliveries for larger volumes;

  • 25L blue canister made of PE with sealed cap, the canister’s weight is 1,2kg.
  • 208L blue barrel made of PE, with a sealed cap, the barrel’s weight is 9kg.
  • 1000 L non-translucent IBC, the IBC weight is 70kg.

Download Packaging Information

Request Product Information

References

Latest News

Dec 03, 2024
Discover the Energy-Saving Advantages of…
Read news story
Nov 18, 2024
CRANE TEMPER – advancing refrigeration…
Read news story
Oct 07, 2024
MAJOR MILESTONE FOR CRANE TEMPER
Read news story
Jul 18, 2024
KRAHN AT CHILLVENTA 2024
Read news story

Trade Affiliations