Hot Water Saver. Final Report

摘要

The Hot Water Saver consists of a cylinder mounted at the water heater in the cold water inlet pipe and a crossover pipe connecting the hot and cold water pipes at the most distant point of use from the water heater. The cylinder contains a piston with a rod connected to the upper side which extends through the top of the cylinder. The piston moves up or down according to the direction of water flow. The water chamber in the cylinder is sealed with u-cup seals located on the rod and on the cylinder. All of the cold water that enters the water heater flows through the cylinder. A sketch of the device is included. The energy saved is in part due to the return of the hot water remaining in the pipe to the hot water heater. Another significant source of savings derives from the recapture of the heat lost to the pipe. (ERA citation 09:022749)