Français
1. Gas
1.1 Main heat transfer gases. Physico-chemical properties
Nitrogen, air, helium, carbon dioxide and superheated steam are the main heat transfer gases. With the exception of air, these are simple compounds. In addition, flue gases, when transported out of the boiler to transfer their sensible or latent heat, act as a heat transfer fluid containing a high proportion of nitrogen.
The main heat transfer gases are non-flammable, non-hazardous to health in moderate concentrations, have a low environmental impact and are stable over a wide temperature and pressure range.
Due to its very low molar mass, helium has a very different density from other heat transfer gases, particularly low under normal conditions (0.18 kg/m ...
The Ultimate Scientific and Technical Reference
This article is included in
Industrial thermal engineering
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Gas
Water
Bibliography
Software tools
COOLPACK, software for calculating fluid physical properties and thermodynamic cycles.
REFPROP, NIST (USA) software for calculating refrigerant properties.
PROPHY, software developed by PROSIM, for calculating fluid properties.
EES, equation solver containing a fluid database.
ECHTHERM, software developed by GRETh to calculate...
Directory
Suppliers
Glycol and alcohol
Dow Chemical Company http://www.dow.com
Clariant International ltd http://www.clariant.com
BASF http://www.basf.com
...
The Ultimate Scientific and Technical Reference
