Ziel
Air cycle systems, using air as refrigerant, have already been used for many years in most of the refrigeration and heating applications, in building air conditioning systems and industrial refrigeration systems. However, these systems have not yet benefitted from recent technological developments. This project will introduce innovations to the air-cycle to increase his efficiency by a transfer of technologies from other industries into air cycle components.
The aim is to develop CFC-free air cycle heat pumps, air conditioning and refrigeration systems, which are energy efficient and competitive, in terms of capital and operating costs, to current CFC vapour compression systems.
The expected results are :
- Computer design and optimization tools for air-cycle systems. - Two air-cycle pilot plants.
- Recommendations for the most appropriate applications and optimization of air-cycle systems in practice.
The air cycle is a heat pump or refrigeration cycle using air as refrigerant. It is therefore extremely environmentally benign, compared to common refrigeration and heat pump systems using CFC refrigerants. The use of air as a refrigerant is based on the principle that when a gas expands, its final temperature at the new pressure is much lower and can be used for cooling purposes. Conversely, when air is compressed, its temperature increases and can be used as a heating medium.
Air cycles can be used in most of the refrigeration and heating applications, such as building heat pumps and air conditioning systems and industrial refrigeration systems. However, the design of an air cycle system is strongly dependant on the type of application and related working conditions.
Air cycle systems have already been used for many years. However, these systems have not yet benefited from recent technological developments. This project will introduce innovations to the air cycle, to increase its efficiency and to transfer technology from other industries into air cycle components. To this end the work programme of the project consists of the following parts :
- Investigation where air cycle refrigeration or heat pumps could compete with conventional plants.
- Experimental work on an air cycle pilot plant to get preliminary practical air cycle experience and data needed for computer model development.
- Optimization of the components of air cycle systems.
- Development of design and optimization (computer) tools, which can be used to design and develop air cycle systems.
- Validation of tools developed in former parts, by building an optimized air cycle system. Investigation of the feasibility of such a system.
The expected results are :
- Design and optimization (computer) tools for air cycles. - Two air cycle pilot plants.
- Recommendation for optimization or air cycle systems in practice, targeted for the most appropriate applications.
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7300 AH Apeldoorn
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