Chiller is rated for nominal capacity, the actual capacity may be lower than the nominal capacity depending on ambient conditions.
For example, if the nominal capacity of chiller rated at 90 tons at 90 F DB (outside conditions), then the actual capacity of this chiller will be less than 90 tons...
Thanks Walz for yor advice.
By using balometer, I achieved a good result at 1.75m from FFL, approximately the velocity was 82 fpm.
But for central zone, where velocity to be measured at 1 m from FFL, there is no stndard hood available of this size for measuring the velocity. Can you please...
Hi,
The ultra clean ventilation canopy of operating theater is divided ino two zones and specific velocity to be maintained at 2m & 1m from FFL in each zone as follows as per HTM 2025.
74 fpm average velocity at 2m from FFL for the complete face of the hepa filter
40 fpm average velocity in...
I think you are quite right, I was also thinking the same.
I will perform the velocity profile soon.
Thanks a lot for your valuable advice.
I would appreciate if anybody else willing to say anything in this regard.
Thank yo Walz.
We achieved required air flow by balometer,based on these, we should achieve the required velocity at 2m above FFL.
The face area of the hepa filter is 2.8m x 2.8 m and according to HTM, this area to be divided into number of small grids each of 2.8 cm x 2.8 cm.
May be due to...
I was told to perform the velocity profile test for ultra clean ventilation system of operating theaters.
Based on HTM procedure, the velocity to be measured at 2 mtrs from finished floor level but no air velocity detected at this level with fan anemometer.
The procedre does not say the clear...
Hi,
Do we have to consider ceiling partition when we use ceiling space as return air plenum and also what percentage of wall heat gain to be cosidered.
What should be the height of the wall? (from finished floor to ceiling or from finished floor to slab).
I checked once again with the service people and sebsequently the supplier, they said that tripping is due to indequate ventilation. These generators are prime mover, (continuous running) and the heat which is acumulated in the generator room is increasing the room temperature since existing...
Hi,
It has been confirmed from service personnel and generator supplier that there is no enough ventilation provided, further, they also recommended me to provide forced ventilation to overcome this problem.
Hi,
A large generator room is located in a factory where 21 generators are located and natural ventilation is provided by only louvers.
These generators are tripping very frequently after installation, may be due to lack of enough ventilation requirement.
I have suggested forced ventilation of...
Hi,
Can anybody tell me the operating theater pressure requirement based on approved standards.
I need mimimum as well as maximum pressure requirement.
Regards,
Please see attached excell file of operating theater air balancing data.
The main problem in balancing was incompitable pulley combination. The blower pulley was smaller than motor pulley and after replacing the required blower pulley, we could achieve the design air flow at 55 HZ, (92 % VFD...
