Ettlingen, May 2001
Biogas is a metabolic product of the decomposition of organic substances. It
is excellently suited as fuel for combustion engines, which do not only supply
mechanical energy but also electricity in connection with a generator and, in
addition, waste heat. Waste heat can be used for generating steam and,
consequently, for operating a steam jet cooling system.
Steam jet cooling systems are an extremely environmental-friendly
alternative of absorption cooling systems, as they only require water or
aqueous solutions instead of chemical cooling agents for vacuum operation. For
the generation of vacuum, steam jet recompressors are required. In this case,
waste heat of 80° C is sufficient as energy source.
Steam jet cooling systems are used for the cooling of water or aqueous
solutions in higher temperature ranges and down to the formation of ice. Their
functioning and design is simple, and they do not require any maintenance to a
large extent. Their capacities range from 10 kW up to approx. 20,000 kW. They
are applied for the generation of cold water in the field of air-conditioning
and for product cooling in the food industry, chemical industry, synthetic
material and pulp industries and for direct product cooling of e.g. moulding
sand, colours and crystal slurry.