Water To Air Heat Exchanger Calculations

H c heat transfer coefficient kcal m 2 h c v relative speed between object surface and air m s since.

Water to air heat exchanger calculations.

The water flow is cooled from 100 to 45 c. 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. 1 kcal m 2 h c 1 16 w m 2 c 2 can be modified to.

Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. Related mobile apps from the engineering toolbox. Convective heat transfer coefficient for air. Only sensible heat transfer occurs.

These templates use s i. Liquid cooling by air to water or liquid transfer applications. A single pass shell and tube heat exchanger heats methanol with water from the initial temperature of 20 to 45 c. Calculation assumes true counter flow.

Heat exchanger efficiency calculator. A tube bundle of the heat exchanger contains 111 tubes the diameter of one tube is 25x2 5 mm. H c 10 45 v 10 v 1 2 2 where. Air is assumed to be dry at atmospheric pressure and at zero elevation.

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. Go bigger not smaller. Liquids are considered incompressible. Have no problems with a c due to air flow and very nice heat.

Fluid properties are used at the average temperatures. 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 velocity of the methanol flow through the tubes is 0 8 m s w. 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.

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. The model numbers shown in the calculator are only a partial listing of our standard products. 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. Fluid temperature ranges from 40 f to 200 f.

Acfm is assumed to be at the average air temperature. Geothermal heating and cooling. The convective heat transfer coefficient for air flow can be approximated to. 1 sweat inlet outlet connections are standard on all models.

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.