Method of cooling an engine by the use of atmosphere is called air-cooling. Generally the two stroke engines are air-cooled. The heat from inside the cylinder is spread over a large area of the outer surface of the cylinder heads and cylinder by providing fins. If a fan is used to supply a continuous air over the large finned surface, heat can be quickly removed. More Temperature difference between air and cylinder is due to good heat conductivity of metal help in air-cooling. The use of copper and steel alloys improves heat transfer.
Advantages :
1. Light in weight since there are no radiators, cooling water and pipelines.
2. No coolant is used and so no leak and no anti freeze required.
3. Warming up is faster.
4. Maintenance is easy and hence cheaper.
Disadvantages :
1. Less efficient since air is poor conductor of heat compared with water.
2. Since it is not possible to maintain even cooling some time distortion may take place.
3. Noisy operation.
4. It can be used only in Small engines.
Comments
Post a Comment