Heat Loss Stainless Steel Tank

Temperature limits for some commonly used insulation materials.

Heat loss stainless steel tank.

A high grade 90 10 cupronickel heat exchanger coil restores full water. Calculate the heat loss from the storage tank using the formula q α x a x dt where q is the heat loss in btu hr α is the heat transfer rate in btu hr ft 2 f a is the surface area in square feet and dt is the temperature difference of the tank fluid and ambient temperature. This is calculated to be 0 4 x 302 x 90 30 or 7 248 btu hr of. The heat loss due to evaporation of water from a surface of an open tank is dominant at higher water temperatures.

The extremely fast recovery means more gallons of hot water per hour for kitchen bath and laundry. Un insulated bare steel tank walls area. Oil tanks heat loss. Heat loss w ft diagrams for insulated pipes ranging 1 2 6 inches insulation thickness 0 5 4 inches temperature difference 50 350 deg f.

Calculate the heat loss from the storage tank using the formula q α x a x dt where q is the heat loss in btu hr α is the heat transfer rate in btu hr ft 2 f a is the surface area in square feet and dt is the temperature difference of the tank fluid and ambient temperature. This is calculated to be 0 4 x 302 x 90 30 or 7 248 btu hr of. The intersection of line a with scale 3 is the tank volume approximately 17 000 gallons. Chart is based upon still air.

The intersection of this line with scale 4 is the surface area of the cylindrical portion of the tank approximately 800 sq. Heat loss from lagged and. Any heat loss through insulated walls is minimal this is especially try for polypro tanks. Connect 12 on scale 2 with 20 on scale 6 line a.

Can be estimated with values from the table above as. Insulation materials temperature ranges. Example heat loss from an open water tank. Hot water in the stainless steel storage tank stays hot longer because there s no flue heat loss plus the tank is protected by a two inch blanket of thermal foam insulation.

Q evaporation fluid radiation fluid 1040 btu ft 2 hr 10 ft 2 10400 btu hr. Tank 12 diameter by 20 long.