Erection of chillers

[engrrk]

Hi,

Can anyone advice me how to erect a 1500RT water cooled chiller (around 25,000 kg) in a covered plant room located at the roof slab? I understand that the chillers can be lifted to the roof floor slab using cranes/hoists. But how to move in the chillers into the plant room and how to place it over the plinth?

Thanks a lot.

 

[willard3]

This is not a rigging forum.

 

[EnergyProfessional]

You may have to de-mount the room. Unfortunately Architects design buildings so that the equipment gets installed before the roof etc. and whoever has to repalce it has a lot of head-scratching to do......
Put an architect and a lawyer in an opaque bag, and beat the gab with a bat.... you will never hit the wrong person.

 

[317069]

4-5 workers push it forth and back, left and right, up and down.

 

[engrrk]

Hi HerrKaLeun,

Thanks for your reply. In my project, there are 5 chillers and not all these 5 chillers are installed on the day-1. Initially 2 chillers are installed and later, when the need for air-conditioning load arises, further chillers are added. Also, the roof of the chiller plant room has some water tanks and dish antennas for cable television networks. Hence, de-mounting the roof or putting in all the equipments during the construction period is not possible. Any ideas in such a case?

 

[engrrk]

Hi 317069,

Thanks for your reply. In this suggested way of pushing the chillers, will there be any holding/hanging beams required to hang the chillers and push them in? Generally the chiller manufacturer recommends to have a clearance of 1m above the chiller for hoisting. Any idea, is there any significance/benefits of allowing this 1m clearance, as the chiller is anyway hoisted by hanging it from the crane at a height not necessarily 1m above the chiller?

 

[MintJulep]

You would be well off hiring a rigging contractor, as this sort of thing is their bread and butter.

Could be a good application for air casters.

You will need to know the bearing capability of the parts of the roof not designed to have heavy equipment on it.

I suspect that the 1m hoisting clearance above the chiller is for performing maintenance, not for installation.

 

[317069]

4-5 workers who know how to do it, they will do it properly and you don't have to worry what kind of tools they will use, this is their job. you have nothing to do with it, what you can do is to make sure that the installation is as per manufacturer instructions and keep liability away from your shoulder.

 

[chicopee]

I second MintJulep's suggestion about hiring a rigging contractor. Instead of dropping the unit on the roof and move it to the inside, the rigger may decide to make a hole in the wall and drop it thru there. I used to work for a rigger and they did amazing things.

 

[BronYrAur]

Agreed. We fit chiller and boilers in tight spaces all the time, but we hire riggers to do it. What about disassembling the chiller? We've had to do that before in order to lower a centrifugal down an elevator shaft. We then put it back together in the basement. Again, riggers did all of that heavy lifting work.

I think you are describing what I would call a mechanical penthouse in the center of a lower roof. You probably can't just set the chiller on that lower roof due to structural concerns, unless you break the chiller up into pieces and scatter it around. Lots of speculation here on exactly what you situation is, but no matter what, you need professional heavy machinery movers.

 

[JVKS]

Viagra design and Testosterone rigging are the best at chiller erections. if you stress the system to hard you may have trouble. sorry guys this was to much of straight line to ignore.

 

[cry22]

Think differently, outside the box folks.
In such situation, your life saver is modular chillers, they will fit through a 3-foot door.

http://www.multistack.com

Besides, with modulars, you can add only what your future load calls for, not an additional 1500 TR.
Modulars have better IPLV than centrifugal chillers at part load, cause at part load, you just turn a chiller OFF, and nothing beats OFF.