installation of remote condenser

[PaulLag]

Hi there
Hope everybody is fine.
Please I am contacting you in order to ask you an opinion about an installation I have been asked to evaluate.
Point is as follows.
A remote condenser in installed in an ambient with ceiling and one wall open to the outdoor, closed by a grid.
This grid presents a 60% of free surface
Therefore 3 walls and a ceiling, one wall open with a grid.
The direction of outside air of the condenser is perpendicular to the grid, while the air inlet is taken from the back of the room. The condenser is raised from the floor, meaning there is some free space between the same condenser and the floor

Ratios of dimensions seem not bad to me, meaning
- The ratio of the ambient volume to the condenser is 52:1
- The ratio of the area of the grid to the face area of the condenser is 6:1
- The room is 3.5 times taller than the condenser

My concern is as follows.
The inlet air of the condenser is taken from the closed part of the room – since the discharge is on the grid part, so that I see a risk of increasing more and more the condensing temperature, so that we will reduce the efficiency of the system.

Please, has any of you ever faced a similar installation ?
Are my concerns justified ?

I thank you in advance

 

[LittleInch]

Please supply a drawing with dimensions.

It depends but yes there would appear to be a high risk of warm air recirculation.

But how high might depend on how close the condenser is to the grid.

Right next to it is better than sitting at the back or the middle of this box.

That's why we need to see a drawing or sketch and not rely on ratios.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[PaulLag]

Hello,
I can't send you the original drawing, but I made a sketch,

Hope this helps

 

[LittleInch]

Only if you actually post it, either as an attachment or an image....

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[PaulLag]

My apologizes

 

[EnergyProfessional]

Not great and should be compared to manufacturer recommendations taking into account ambient conditions.

 

[LittleInch]

You really need to extend the ducts on the front until they hit the grid or simply fit a shroud around the top and side of the condenser until it hits the grid.

Even then if the wind blows in the wrong direction you could essentially have a recirculation of hot air feeding the rear of the condenser and the temperature will gradually increase.

I am fairly sure if you look up the installation and operating manual for the condenser's it will have minimum distances from walls and will not allow such an installation.

These are big condensers so will be chucking out a LOT of heat.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[nuuvox000]

Comes down to the manufacturer recommendation on locating the unit. The grid only provides 60% free area? Sounds more like a louver. Without any other information, I would probably turn it around so that the intake is facing the "grid". Typically condensers need more free space on the discharge side to avoid too much back-pressure on the fans.

 

[MedicineEng]

Is it a possibility to open a hole on the far side wall?