Water To Air Heat Exchanger Calculations

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.

Water to air heat exchanger calculations.

1 sweat inlet outlet connections are standard on all models. 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. 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. Fluid properties are used at the average temperatures.

A single pass shell and tube heat exchanger heats methanol with water from the initial temperature of 20 to 45 c. 1 kcal m 2 h c 1 16 w m 2 c 2 can be modified to. Related mobile apps from the engineering toolbox. Air is assumed to be dry at atmospheric pressure and at zero elevation.

Garage and out building heat. Have no problems with a c due to air flow and very nice heat. Liquid cooling by air to water or liquid transfer applications. Fluid temperature ranges from 40 f to 200 f.

Only sensible heat transfer occurs. The convective heat transfer coefficient for air flow can be approximated to. H c 10 45 v 10 v 1 2 2 where. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations.

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. Acfm is assumed to be at the average air temperature. They will also calculate the number of tubes needed for a shell and tube heat exchanger and to calculate the pipe length needed for a double pipe heat exchanger. The model numbers shown in the calculator are only a partial listing of our standard products.

These templates use s i. Liquids are considered incompressible. Calculate the required heat transfer area based on values needed. The water flow is cooled from 100 to 45 c.

Calculation assumes true counter flow. The velocity of the methanol flow through the tubes is 0 8 m s w. Go bigger not smaller. A tube bundle of the heat exchanger contains 111 tubes the diameter of one tube is 25x2 5 mm.

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. Convective heat transfer coefficient for air. 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.

Many other applications utilizing liquid to air or air to liquid transfer.