Water Heater Recovery Rate Calculator

However it can be used to calculate general hot water recovery time for any amount of water.

Water heater recovery rate calculator.

Input specific heat btu output gph x 8 25 lbs gal. The amount of hot water provided will depend on several things. Improving commercial kitchen hot water system performance characterized for its maximum hot water use to calculate the peak hot water demand. Wattage of the heating elements burner size efficiency temperature rise required and the time frame used to measure the recovery rate.

Various formulas for water heating calculations efficiency gph x 8 25 x temp. California flow rate guidelines of fixtures 5 for use in sizing storage and recovery rate requirement of the water heater can be reduced from 445 to 340 gph. Recovery rate for an electrical heater in a domestic hot water system. The above calculator is for calculating hot water recovery time for hot water cylinders.

The recovery rate is the amount of hot water the water heater is capable of producing in a given period of time. In an electric water heater if the wattage of the elements is 4500 the incoming water temperature is 40 degrees and you are heating the water to 120 degrees temperature rise of 80 degrees the recovery rate is 23 0 gph. Rise x 1 0 btu input gph x 8 25 x temp. Visit the solar water heaters page for more on these calculations.

If you would like the ability to select higher kw amounts please either feel free to get in touch and tell us or use the formula to calculate it. The first hour rating is the number of gallons of hot water the heater can. To properly size a storage water heater for your home including a heat pump water heater with a tank use the water heater s first hour rating. Rise x 1 0 btu hr.

Rr hin μ dt ρ p 3413 btu kw dt ρ 3.