Lately, natural refrigerants have increasingly been used in process cooling. Ammonia makes up the largest proportion - over 40 percent - followed by carbon dioxide and hydrogen.
"For many users, energy efficiency is the most important criterion in selecting the appropriate refrigerant," explained Georges Hoeterickx, executive board member of Eurammon, a joint European initiative of companies, institutions, and individuals who advocate an increased use of natural refrigerants. "Because ammonia has proven efficient and effective, many companies choose to use this traditional natural refrigerant."