Recuperators with cellulose heat exchanger

From cellulose

— heat exchangers made of cellulose are lightweight and extremely inexpensive to manufacture. However, in terms of thermal conductivity and wear resistance, cellulose is an ineffective material and is therefore quite rare. On a separate line, it is important to mention that cellulose tends to absorb unpleasant odors, and its cleaning process does not involve washing or other contact with water.