What kind of person do you have to be to become a refrigeration engineer? Do you have to be extremely clever or in some cases extremely stupid? Have you ever come across a particular problem or customer and think, why am I doing this?
Being a refrigeration engineer requires many different personalities or hats in order to be able to go about your job with as little hassle as possible. The first hat required is that of a dogs-body, this is worn when we first become trainees. However, this will change later to the hat of a human being once it is realised that we can now perform certain tasks, such as clean condensers and change the odd fan motor. Eventually we progress to that of human being with a personality that can perform a wider range of tasks, such as 24hr call and sometimes the odd first fix. Then comes the scary part - out on your own and without back up. When this stage is reached you have become an engineer (or you think you are.)
You are now out on your own and have a van (that is what it says in the logbook) and a set of tools, but use the term TOOLS lightly. The calls are now flooding in - literally, as most of them are water leaks, this is when you don the hat of a plumber and are now the face of the company in the customers eyes and always will be. As your confidence grows you, begin to feel that you can fix anything, but in reality, half the service department is following behind you and you are affectionately known as the rubber ball as everything you hit bounces. This will disappear over the next year and you will receive the title of engineer who is all right - especially when he covers my 24hr callout. At this point, you empty out all the hats from the bag and put them on at the same time, very fetching.
These hats cover a multitude of sins, firstly the communication hat that is used when bull****ing, I mean explaining to the customer what the problem is or when having a good moan about the job, as if we do that. The next hat is that of diplomat especially as you are the fifth engineer to attend the same problem this week (reference-rubber ball) and the customer is rather upset. Also, reference communication. The majority of engineers are blessed with common sense and some are not. But we are not all perfect, we all have our weaknesses and strengths whether it be in the mechanical or electrical hats that we wear when performing the role of refrigeration engineer, some people wear these hats well, some not so well and some not at all. Some people claim to have these particular hats, but nobody has ever seen them.
Everybody wears their hats differently and in their own style, which shows through in their personalities. Refrigeration engineers are a breed of their own who thrives on overtime and gossip, the juicer the better if you ask me. Over the last few years, good engineers are thin on the ground and less skilled personnel are tagging themselves as refrigeration engineers. That is not to say that not every body who comes into this trade from another trade makes the grade, but a few give the trade a bad name. Now that ACRIB are more involved and the trade is now better regulated the standard of apprentice to engineer should become better.
You have to know enough to do the job and to keep the customer happy and yet baffled
You have to be prepared to work very very long hours on your own in dangerous conditions - you will get very tired
You will be working with toxic substances, inflammable substances and with high voltage electricity (I'm in industrial ref. at this moment)
Your pay will not come up to the effort and skill you have put into your work
You must be able to do anything with nothing
I've been in the game since the late 70s, these are my beliefs
I have been in the trade for 5 years, and I started from scratch, went to school got my diploma in HVAC/R and my Universal License,and basically learned commercial refrigeration and HVAC crash course, which nothing I was taught in school aside from basic taught me anything. It's a learned trade by experience, and 5 years later, I got past the basics, and now I understand more of the physics behind the automation controls and the calculations, also got a better understanding of what factors cause what kind of conditions, and as was said before by someone else, its something you don't learn, unless you get your hands dirty, experience makes you wise.
On my own opinion it is not just a title or position can call; those having concern for the globalization, lifes, properties treat with a combination of simple equations; weather makers + climate changers = RE
A title in Canada is not the same as in Germany or in Egypt or in Iran, India or in China, Australia, Peru, South-Africa or Sudan, cause education is not comparable.
Nevertheless, also to my opinion there is definately sure and undoubtly a difference in mechanics, technicians, engineers and scientists.
The training for a mechanic is very different from that of an engineer because they are supose to do a complete different kind of job and thus get different tools in their education.
I consider myself technician in the Netherlands, but will introduce myself as engineer in Egypt because some places people are more status minded and my skills exceed that of most local engineers in almost all fields.
If I would not call myself Engineer in most countries in Africa, South America, Asia and the Middle East, than I would not be respected enough by the local engineer, technician and mechanic (who probably all have a university degree) to do my job properly.
Here in the Netherlands I will never introduce myself as engineer, not only because that is a protected titel, but also because I did not have that training and do not have the Dutch engineers skills and knowledge. In University your brain is trained to a different way of thinking and different knowledge is presented to these students.
I can design and build a cooling system, I can design and build the electric board and system, I can weld etc, but calling myself engineer electrician or welder in the Netherlands would be misleading.
I just call myself a very, very smart, clever, handy and sometime genious technician
I like to distinguish roughly four groups in our field:
1 The mechanic.
The mechanics won't bother about the refrigeration process but knows all about the bolt and nuts. They are the people who build and construct and do the compressor overhaul etc. They are trained how to construct as to design. e.g. they make the pipe.
2 The technician
The technicians are expected to understand how the system should work, how it is working and how to get it to work as it should. They are trained to understand and implement the design. e.g. they can tell you if the pipe should have a slope and why.
3 The design engineer
The design engineers are expected to understand why the system works and are able to calculate and design the systems. They are capable to design new applications with available knowledge. e.g. they can design/calculate a system with a standard or even with an inovative different piping scheme.
4 The engineer/scientist
These are focused on the fundamental understanding of physics and how to use that to our advantage. They come up with complete new technology. They are delivering the formulas for designing microchannel heat exchangers based on there reseach and knowledge about heat exchange and flow patters. They come with freezers based on the properties of sound or laser beams For them pipe can be both a simple container as well as the center of a complex thermo-mechanical interaction.
I guess we are all trained and working somewhere in one of these groups.
Most (if not all) of us are also partly skilled and/or working one group up or down.
Few will be active two groups or more away.
Respect for each others qualifications and weakness is for me what differentiates a good (ref.) guy from the rest, together with how much effort he/she puts in the work.
Also having knowledge and sharing it between these groups is highly appreciates (hence the succes of this forum).
If a good ref guy from any of the groups mentioned above screws up or is not capable to fix the problem, than he/she was working too far off his limits (either due to his or his managers awareness of those limits), had bad luck or it was just one of those days that things don't work.
BSST is the only technical school offering this program as we strive to offer our students easy access to information and more importantly a easier path to a JOB and a new future
I have been ten years in RAC pratical services. after graduating from a tree years RAC cause from technicals college, Now I can Designed, Troubleshoot,Repair, Retrofit, installed, and stimulate existing unit to fit new application Who I am I?
I am currently working on a AEC potable chillers 3.5 that was Designed with Scroll compressor 3.5 HP R410a, but the technician on the job before me replaced With hermetic reciprocating compressor 3.5HP Manurope for R404a R407C 507C But every part on the unit remain the same exceipt the compressor. I dont Know the Refrigrant He Used, Now the unit Lost a Little Refrigrant Require Refrigrant Top-up, Can I Use R410a? in the Compressor That Was Designed for R404 R407C R507C.thanks Any Help Will Be Highly appreciated
I am currently working on a AEC potable chillers 3.5 that was Designed with Scroll compressor 3.5 HP R410a, but the technician on the job before me replaced With hermetic reciprocating compressor 3.5HP Manurope for R404a R407C 507C But every part on the unit remain the same exceipt the compressor. I dont Know the Refrigrant He Used, Now the unit Lost a Little Refrigrant Require Refrigrant Top-up, Can I Use R410a? in the Compressor That Was Designed for R404 R407C R507C.thanks Any Help Will Be Highly appreciated
I would not advise using R410A in the Maneurop compressor as the body on the compressor may not be strong enough for they higher standing pressure of R410A. The compressor and motor will not be designed for it either.
To find out what type of refrigerant is in the system you can measure the pressure and temperature and look it up on a pressure temperature chart (so long as there is enough refrigerant for there to be liquid present)
Thanks Bro, i will try using the Chart, Considering the size of the unit which is small 3.5 HP,Can R410a have Enough standing Presure so as to affect the Compressor body?
Depends how hot it gets in Nigeria, just looked it up on Wiki and says can reach 48C which would be 415psi for R410A!!! could burst the compressor or even blow out the oil sightglass if its not designed for it.
I have cut open copeland scroll compressors and the R410A ones are much thicker than thr R22 ones so personally i would not want to be anywhere near the maneurop on a hot day if its got the wrong refrigerant in it.
The system should have the correct compressor fitted, trying to make the wrong parts work will only waste time, money and possibly contaminate the system if the new compressor burns out from being overloaded by trying to pump refrigerant it wasn't designed for.
Commercial HVACR will immerse you in the basics of larger refrigeration and cooling units, electronic controls, ice machines, heat pumps, and more. This program prepares you to work in the commercial side of the industry and provides 100 hours of Massachusetts Refrigeration Code and 150 hours of Massachusetts Electrical Codes.
hi I am new to this forum, but just wanna put my tuppence in, I have worked in the fridge / aircon business for a few years now, in perpective has always been a challenging but great career to be in, started in fridge now in the hvac game, my previous job was for a company that worked for retail supermarkets, not in this atmosphere, __ace cooling, maintenance, whatever they are calling themselves nowadays, great bunch of guys to work with but the office and structure of the business was to treat the engineers as slaves and worked till you drop.
sleep! family! what's that. these guys were not on the best money in the world, but the hours they put in made sure they hade a good salary, but when did they have the chance to spend it, when their dead?
anyways, that's why I am now working in the hvac business, who cares if people are too hot or cold, the stock/produce more important! isn't it?
"But if you just take the opportunity to show off, or that you do not lose the ball after the defense and led the team lose the ball, and it is a problem, but because of Azar so players can decide the outcome of the game, I definitely do not tell them "You can not do this, do not do that. 'You can do whatever you want, because you are more talented than the other players, but not for the purpose of transferring fun, not belittle your opponent team soccer uniforms
, or wear each other's crotch where I was, He will always remember his goal, he lost the ball can be 1-2 players broke into the restricted area, and I would give him freedom. "
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