Hello, I´m new in this forum and have a question. I need to calculate de cooling load of an area that demands 100% outside air, and to be honest, I don´t Know how to do it. There are some questions that comes to my mind: What should be the leaving air temperature? The loads produce by people, lights, walls, etc that we estimate in a recirculating system, should be calculated in this kind of system too?

I really apreciate some help. (I´m from Dominican Republic, so excuse my english). RE: calculation of a 100% outside air cooling load. For the outside air: Sensible cooling CU FT/MIN x 1.085 X outside AIR DELTA t = BTU/HR SENSIBLE Latent cooling: fu ft/min x 0. Maroon 5 Overexposed Download Mp3 Free more. 66 x (delta moisture in grains/lb from psychometric chart) = btu/hr latent Sensible load + latent load = total cooling load for outside air In general, cold air is delivered at 55F dry bulb and wet bulb (ie, saturated) Building solar loads, lights, equipment and people loading should be included in your calculations. You should probably hire a Mechanical Engineer to do this as he is familiar with it and you aren't.

RE: calculation of a 100% outside air cooling load (Electrical) 1 Apr 06 15:30. Hello willard3 I have met some intelligent dedicated engineers in the third world. Unfortunately, the training and educational systems there are not up to first world standards. Pablo2410 has recognized that he doesn't have the information that he needs to solve his problem and has wisely gone looking for good advice. I thank you on behalf of pablo2410 for your kind help, but I wish to gently point out that your last suggestion may not be feasible. Pablo2410 is quite possibly the best mechanical engineer available.

You may find it rewarding, willard3 to mentor pablo2410 and help him to become a better engineer. From the tone of his post I believe he is intelligent and dedicated. He recognizes shortcomings in his education and is trying to improve himself. Driver Modem Huawei E303 Telkomsel Flash Simpati. You have already given pablo2410 the basics, go a little farther and help him through his calculations and you may find that you enjoy it. Respectfully RE: calculation of a 100% outside air cooling load (Mechanical) 2 Apr 06 18:33. Pablo, The room leaving air condition should always be the room condition. Calculate heat load as per the general rules.

Plot the room condition and ambient condition state points on the psychro chart. Draw a line with a slope of SHR from the room condition to the saturated curve. This is your dew point condition. Join the ambient condition state point to the dew point.

Jun 04, 2006 Hello, I´m new in this forum and have a question. I need to calculate de cooling load of an area that demands 100% outside air, and to be honest, I don´t Know h. Or contact your local bookstore. Ing includes software to develop duct and pipework layouts and to produce details of refrigeration plant, heating plant, and fan. Engineering manuals, standards, ASHRAE handbooks, and other publications in air conditioning and refrigeration.

The total load on the coil will be the mass flow rate of air times the enthalpy difference between the ambient condition and the dew point condition. In some cases, the SHR line becomes an asymptote to the saturation curve. In this case, assume some arbitrary dew point and add reheat into the process. The link below gives you description and details of many psychrometric processes. Have a look into it. Waross, Nice thinking and I feel that is the whole idea behind these forums.

RE: calculation of a 100% outside air cooling load (Mechanical). Correct me if I am wrong but I am assumming you meant Volume flow instead of mass flow. Below is something I grabbed off a website descrbing what I think will be of help to you. One air change occurs in a room when a quantity of air equal to the volume of the room is supplied and/or exhausted.