Method, apparatus, and system for projecting hot water availability for showering and bathing

摘要

Methods and apparatus for predicting the availability of hot water for showering and bathing. One or more parameters corresponding to the operation of a water heater are monitored over time. Data corresponding to the monitored parameters are processed to determine a rate at which hot water is being consumed by the shower/bath and/or other hot water consumers. Based on a hot water consumption rate and determination of a current hot water availability condition, a time at which the temperature of hot water supplied by the water heater is projected to fall below a minimum temperature threshold is determined. In one embodiment, the apparatus include a thermal-modeling computer and a control/monitor interface that is disposed in or proximate to a shower. In one embodiment, the thermal-modeling computer is installed at a water heater and data is transmitted between the thermal-modeling computer and the control/monitor interface via a wireless signal. The techniques also can be used to determine whether an adequate supply of hot water exists for a bath prior to drawing the bath.