Air Cooling System Design

if you use the normal water so you can gain the cooling equivalent to your supplied water temperature , second part of your question is why it is getting hot , that is because of the friction heat of your pumping source.

You have 2 alternatives reduce the air flow or the water flow. Either way it will not cool the room any better. A water cooler compressor is small has a low Btu rate. It was not design to be an air conditioner. It was designed to cool water that people intermittently drink from. Most water coolers if in continuous use will not even cool the water for drinking.

Assuming this is a closed loop system you've designed your only real loss should be your load. Are your lines properly insulated? Is the load more than the cooler can support? Does the water temp. stay low when the fan is off? Tell us more.

How about using 10 or so water coolers, piped up in parallel.

The problem is that the cooler compressor is to small to do the task that you are asking of it. Even if you used a domestic freezer you would probally have the same problem, they arent designed for you application.

Also is the water cooler in the room that you are trying to cool down? If it is you are waisting your time, it would never work.

Good luck and May "The Force Be With You"

Cheers

Joe

Dear friends,

How about following suggestion:

1. Connect the suction of your pump to outlet of your copper tube cooling system.

2. Pump and spray the water into an open tank positioned at a higher level to expose and evaporate a part of it by air.

3. Connect the tank's outlet to the copper tube's inlet.

4. Regularly replace the evaporated water.

Regards.

If I understand you correctly, the temperature increase (delta T) is as the chilled water goes through the heat exchanger and the heat energy in the air is transfered to the heat exchanger and then to the water.

This looks like a chilled water Air Conditioning system. Is this a correct interpretation of your set up?

If so than it looks like a capacity problem. Is the air flow and entering temperature at a constant rate? Is the water flow at a constant volume? I have more questions, but they are application specific.

the air flow and entering tempreture are constant ? should i reduce the blower speed will that make any effect ? the water enterign the heat exchanger is of a low volume .will that effect the cooling tempreture too ? pls advice and provide me with any informations regarding the topic

thanks

Dear Friend,

Following factors will affect the temperature drop and efficiency of your cooler:

1. Inlet water temperature.

2. Outlet water temperature (after cooling the air).

3. Temperature of atmospheric air.

3. Speed and volume of air intake.

4. Speed and volume of cooling water.

5. Size of cooler tube (surface contact area ) and design of loop.

6. Room ventilation control.

If there is no provision to cool down the heated up water, the air temperature can not be reduced. You can try adding ice or chilled water in your cooling water which is more economical and efficient way, though it is a crude design.

Regards.

I believe that it is a load/ capacity problem. Your total heat load is greater than the chiller's ability to remove it. You either increase the capacity of the chiller, or lower the amount of load. If you want a fixed discharge temperature and air volume in the design that you have now. You will have to increase the chiller capacity. If you are doing this with spare parts or discarded materials, see if you can parallel another chiller to the system. An insulated chilled water tank will give you a buffer as a result of the extra water mass. A lot of systems that I work with, chill a tank of water and the chilled water is than used as needed. You can use multiple chillers of any capacity and stage their on/ off cycle as needed. Playing around with air and water flow will only led greater frustration.