Water To Air Heat Exchanger Calculations

Convective heat transfer coefficient for air.

Water to air heat exchanger calculations.

Have no problems with a c due to air flow and very nice heat. The velocity of the methanol flow through the tubes is 0 8 m s w. Go bigger not smaller. Fluid temperature ranges from 40 f to 200 f.

Calculation assumes true counter flow. Liquids are considered incompressible. Liquid cooling by air to water or liquid transfer applications. Many other applications utilizing liquid to air or air to liquid transfer.

I agree with leaddog don t go small i have a 75 000 btu furnace with a 20 x20 exchanger which i think it is capable of 100 000 btu s if i m not mistaken. Related mobile apps from the engineering toolbox. H 2 enthalpy in outside make up air after the heat exchanger kj kg btu lb h 3 enthalpy in outlet air before the heat exchanger kj kg btu lb enthalpy of moist air. Sizing of the unit required for the application if there is no space restriction can be determined by the use of either the theoretical heat.

Geothermal heating and cooling. H c heat transfer coefficient kcal m 2 h c v relative speed between object surface and air m s since. The convective heat transfer coefficient for air flow can be approximated to. 1 sweat inlet outlet connections are standard on all models.

H c 10 45 v 10 v 1 2 2 where. Only sensible heat transfer occurs. 1 kcal m 2 h c 1 16 w m 2 c 2 can be modified to. Air cooled heat exchanger sizing does preliminary estimation of finned area plot size total fan power and air outlet temperature checalc chemical engineering calculations to assist process plant operation and maintenance engineers.

Heat recovery app free apps for offline use on mobile devices. Brazetek water to air heat exchangers are also suitable for liquid cooling applications and a number of other liquid to air and air to liquid heat transfer applications where liquid temperature does not exceed 350f and operating pressure is at or below 360 psi. The water flow is cooled from 100 to 45 c. Air is assumed to be dry at atmospheric pressure and at zero elevation.

These templates use s i. Fluid properties are used at the average temperatures. A tube bundle of the heat exchanger contains 111 tubes the diameter of one tube is 25x2 5 mm. Heat exchanger calculator the heat exchanger calculator is a program specially designed to predict the performance of the heat exchanger model number you choose based on the parameters you input.

Garage and out building heat. The model numbers shown in the calculator are only a partial listing of our standard products. Heat exchanger efficiency calculator. Calculate the required heat transfer area based on values needed.

Acfm is assumed to be at the average air temperature.