compression cycle

compression cycle, which uses a rotary vane compressor with oil cooling, needs additional research and development. Given the large retrofit market potential for houses with hydronic heat distribution, scroll compressor manufacturers might do well to take up the challenge of developing specific products for this market.
Working fluids Much research has been and continues to be carried out in the field of new and alternative refrigerants and their application in air conditioning, heat pumping and refrigeration. Readers of this newsletter have been kept up to date on this topic. It might by now be superfluous to emphasise the importance of selecting the optimum refrigerant so as to achieve the design performance of a system under safe and environmentally benign operating conditions. It is obvious that the air conditioning and refrigeration industry have been impacted by environmental regulations to an extent not heard of before.
Under current circumstances, the conclusion is that no single fluid can be recommended as the best optimum solution for air conditioning, heat pumping and refrigeration systems. This means that designers are continuously faced with the problem of evaluating several refrigerants and trying to select the best one for any specific application. However, it is expected that in future environmental factors will increasingly influence the selection process.