Heat Recovery and Reutilization in Biogas Fermentation, Purification, and Pressurization Systems

A "heat pump" is a device that transfers energy by utilizing electricity to extract low-grade heat energy from natural sources such as air, water bodies, or geological structures, and then transfers and elevates it to high-grade heat energy usable for human production and living. With a heat pump consuming one unit of electrical energy, it can provide 3 to 6 units of high-grade heat energy, resulting in a primary energy utilization rate exceeding 100%. It is primarily applied in heating, hot water, and refrigeration fields for hotels, schools, hospitals, real estate, swimming pools, baths, farms, and plantations.