Water To Air Heat Exchanger Calculations

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.

Water to air heat exchanger calculations.

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. Calculation assumes true counter flow. Convective heat transfer coefficient for air. The model numbers shown in the calculator are only a partial listing of our standard products.

Related mobile apps from the engineering toolbox. 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. Liquid cooling by air to water or liquid transfer applications. Heat recovery app free apps for offline use on mobile devices.

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. A tube bundle of the heat exchanger contains 111 tubes the diameter of one tube is 25x2 5 mm. Calculate the required heat transfer area based on values needed. Have no problems with a c due to air flow and very nice heat.

The convective heat transfer coefficient for air flow can be approximated to. 1 kcal m 2 h c 1 16 w m 2 c 2 can be modified to. These templates use s i. 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. Many other applications utilizing liquid to air or air to liquid transfer. Heat exchanger efficiency calculator. 1 sweat inlet outlet connections are standard on all models.

Go bigger not smaller. The water flow is cooled from 100 to 45 c. H c heat transfer coefficient kcal m 2 h c v relative speed between object surface and air m s since. A single pass shell and tube heat exchanger heats methanol with water from the initial temperature of 20 to 45 c.

H c 10 45 v 10 v 1 2 2 where. 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. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. Acfm is assumed to be at the average air temperature.

Liquids are considered incompressible. The velocity of the methanol flow through the tubes is 0 8 m s w. Only sensible heat transfer occurs. Fluid properties are used at the average temperatures.

Garage and out building heat.