Natural refrigerant replacements could reduce energy costs and conserve the environment

• The 1987 Montreal Protocol and the 1997 Kyoto Protocol called for countries around the world to phase out substances that deplete the ozone layer, but many HVAC systems still use synthetic refrigerants that violate those international agreements and inflict environmental damage.
•  Recently, researchers investigated how natural refrigerants could be used in geothermal heat pumps to reduce energy consumption and operating costs.
• A solution to reduce energy consumption in heat pumps is using the earth as a renewable heat source/sink to both increase efficiency and create a diversity of energy sources

SOURCE : SCIENCE DAILY