Office induction unit problem

[homebrewer]

I am currently trying to fix the HVAC system in my office. The HVAC system has induction heating/cooling units along the outside walls in each room to provide room heating, cooling and ventilation. The problem with these induction units is that when cooling the coils have excess water coming off of them. So much water that the cleaning staff needs to vacuum the drip pan out twice a day.

I was wonder if someone could confirm my solution for the problem.

My solution is to reduce the temperature of the water coming from the chiller to the cooling coils to a temperature above the due point of the air which exists in the cooling system. To do this I would install a control system that measures the temperature and humidity of the air and then determine the due point of this air and then set the temperature of the cooling water above this temperature.

Would my solution work and what is people’s opinion on my solution to the problem.

 

[CRG]

Is there a blocked drain from the heating/cooling unit? The solution is to properly drain the condensed water.

 

[quark]

CRG is right. Make sure that proper drainage takes place. If you control air temperature above dewpoint you don't have any control over humidity, and this results in increased perspiration which causes much uncomfort.

Excess water is a term due to misunderstanding because it is sufficient water because of ambient RH. You must remove it.

Regards,
Repetition is the foundation of technology

 

[VEEKRISH]

Hi, both CRG and QUARK have put you on the right path. No point in having a Dew Point Controller if you want to de-humidify (as you would in airconditioning). If there is excess water in the drain pan what it does mean is that your coil is performing (which is good!). The thing to look for is -

(a) Is your drain choked ?

(b) Is there any infiltration (out side moisture laden air)?

Alternatively, check if you can provide a bigger drain with imroved slope.

Let us know if the problem is licked.