Application areas
Areas of application for CAHS
The use of a CAHS is profitable for many companies that depend on constant industrial process heat with simultaneous compressed air supply. Since CAHS can provide process heat between 90°C and 500°C, there are practical applications in various industries, e.g. vehicle construction, mechanical engineering, metal processing, textile industry, paper industry, chemical industry.
Optimal conditions for the economic operation of a CAHS:
High capacity utilisation (3-shift operation) and / or
Demand for process heat, e.g. for
- feed water heating for steam generation
- pasteurisation
- parts cleaning and degreasing
- electroplating, chromating, burnishing
- powder coating and painting
- drying processes
- Evaporation
- Refining
Demand for process and/or air-conditioning cooling for
- building air conditioning
- industrial refrigeration
- food production
The CAHS directly generates
Process heat
- Warm and hot water/hot gas
- for feed water heating
- for combustion air preheating
- for thermal oil heating
- for hot air generation
- for steam generation
Air-conditioning and/or process cooling
- Provision of waste heat from the CAHS up to 108°C flow temperature for an absorption chiller
- Sorption cooling down to -40°C
Electricity
- The waste heat from the CAHS is converted directly into electricity in an ORC process (Organic Rankine Cycle).
Application examples
The practical applications depend on your compressed air requirements and the required temperature quantity/level in your applications.
| Industry | Share of heat demand | Energy cost share | Ratio | ||
| up to 100°C | 100°C to 500°C | above 500°C | of gross production value | of electric to fuel consumption | |
| Coal mining, peat extraction, extraction of natural gas/oil | 10% | 40% | 50% | 4,0% | 17,0% |
| Ore mining | 5% | 2% | 93% | 9,0% | 0,5% |
| Food industry, tobacco processing | 58% | 42% | 0% | 1,9% | 0,3% |
| Textile and clothing industry | 100% | 0% | 0% | 2,0% | 0,6% |
| Manufacture of wood and of products of wood and cork (except furniture) | 50% | 50% | 0% | 3,1% | 1,1% |
| Paper, publishing and printing industry | 34% | 66% | 0% | 3,5% | 0,5% |
| Coking plant, mineral oil processing, production of hatching materials | 5% | 2% | 93% | 0,7% | 0,2% |
| Chemical industry | 21% | 22% | 57% | 3,4% | 0,3% |
| Manufacture of rubber and plastic products | 42% | 58% | 0% | 2,2% | 1,5% |
| Glass, ceramics, processing of stones and earths | 5% | 2% | 93% | 6,7% | 0,2% |
| Manufacture of fabricated metal products, metalworking | 65% | 13% | 22% | 3,6% | 0,3% |
| Mechanical Engineering | 65% | 13% | 22% | 0,9% | 0,9% |
| Vehicle construction | 65% | 12% | 23% | 0,9% | 0,9% |
