Mainly stuck on why this is not readily available and used i

Mainly stuck on why this is not readily available and used in the United States.

EcoCute is a transcritical CO2 heat pump used extensively in Europe and Japan. Investigate this technology and compare its operational schematic and accompanying T s diagram with that shown in Fig. 10.18. Explore why this technology is not readily available and used within the United States. Compare its use for a 1000 ft2 dwelling in your locale with a more conventional air-cooled residential heat pump using a synthetic refrigerant in terms of costs (operational and environmental impact. What are the impediments to its deployment in the United initial) and States? Create a PowerPoint presentation of your findings and a supporting project report

Solution

To specifically answer your question, a transcritical CO2 heat pump uses C02 or R744 as the natural refrigerant which has the following the implications in terms of its behaviour:

1. It combines with water in air to form carbonic acid which has corrosive properties over metal and can damage limestone and marble.

2.Breathing air that has even ~10% of Co2 content can prove life threatening.

3. R744 is one and a half times heavier than air therefore when released to air, it will accumilate at low elevations .

As far as its use in the United States is concerned, there are legal liabilities over the long term for the manufactureres of Co2 heat pumps. Hence it is not readily available as compared to Japan and Europe.