The renal tubule carries urine from the glomerular capsule to the renal pelvis. 1  The curvy first section of the renal tubule is known as the proximal convoluted tubule. 2  The tubule cells that line the proximal convoluted tubule reabsorb much of the water and nutrients initially filtered into the urine.he renal tubule carries urine from the glomerular capsule to the renal pelvis. 1  The curvy first section of the renal tubule is known as the proximal convoluted tubule. 2  The tubule cells that line the proximal convoluted tubule reabsorb much of the water and nutrients initially filtered into the urine.
The Damper. Cold air is produced in the freezer as liquid refrigerant passes through the evaporator coils and changes into gas. This process causes the surface of the evaporator coils to become extremely cold. A circulation fan blows air over the coils and through a vent into the refrigerator. Within the vent is a damper. The damper is a small flap that controls the flow of air from the freezer to the refrigerator. It is usually found in the top of the fridge or on the back panel near the top. The damper is controlled by a thermostat, which triggers it to open and close depending on the temperature of the air in the refrigerator.
Damper (flow) Opposed blade dampers in a mixing duct. A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning to an unused room, or to regulate it for room-by-room temperature and climate control. Its operation can be manual or automatic. Manual dampers are turned by a handle on the outside of a duct. Automatic dampers are used to regulate airflow constantly and are operated by electric or pneumatic mo