23 April 2019
Energy usage and its impact on the environment has become an important topic in today’s world. One way to handle this issue, on a larger scale, is to use heat pumps for district heating. With the Kigali amendment to the Montreal protocol there are not many options at hand regarding suitable refrigerants. They will be either low GWP nonflammable olefin-based gases or natural refrigerants such as ammonia. The former is expected to be expensive and the latter is toxic. To cope with this challenge, engineers must devise systems that are highly efficient and at the same time carry low refrigerant charge.