Water Heater Recovery Rate Definition

Temperature rise in an electrical heater in a domestic hot water system.

Water heater recovery rate definition.

Rr h in μ dt ρ p 3413 btu kw dt ρ 3 where. Wattage of the heating elements burner size efficiency temperature rise required and the time frame used to measure the recovery rate. This water heater is tested by ahri as a commercial water heater because of it s input btu rating. Dt h in μ q ρ.

Rr recovery rate gal h p electrical power supplied by heater kw temperature rise. The supply of hot water in the storage tank cannot be replenished until the peak usage period has ended and heater recovery is available for this purpose. Electric 1 0900 cost per therm. Water heater soft water system filtration system interior improvements built in appliances kitchen modernization flooring for property with a 5 year recovery period the straight line rate is 20 1 divided by 5 for the first tax year.

A water heater s recovery time also called recovery rate is the amount of hot water in gallons a tank water heater can provide in just one hour after being completely drained. The amount of hot water provided will depend on several things. Usually 100 f is used but sometimes 60 f. The sum of the amount of hot water drawn during the test is the first hour rating.

Beginning with a full tank of hot water a heater with a storage tank can deliver in one hour roughly. The recovery efficiency of this water heater is 96. Recovery rate is the amount of hot water the water heater is capable of providing in a given period of time not to be confused with first hour rating which includes recovery rate plus 70 percent of the tank capacity see faq 8 the amount of hot water provided will depend on several things. The official definition of the recovery time or recovery rate for your water heater is the amount of hot water that your water heater can provide in one hour once it has been completely drained.

0 1200 cost per kwh. National average energy costs. Because of this the heat loss of the insulation is measured in btu hr. Input provides hot water at the hourly recovery rate hour after hour.

That is why they did not and will not issue the water heater an energy factory. Having enough storage tank capacity is. The recovery rate is measured in gallons and basically provides an idea of the speed of your water heater in providing hot water. Here s the official definition.

The storage tank represents instant hot water at greater than heater recovery. Recovery rate for an electrical heater in a domestic hot water system. More important than capacity is the recovery rate which is the number of gallons of water the heater can raise in temperature by a certain number of degrees fahrenheit in one hour.