Mgraw
Senior Member
- Location
- Opelousas, Louisiana
- Occupation
- Electrician
That appears to be about modifying a chiller system. I don't think we are talking about a chiller.
air handler question
- Thread starter bure961
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That appears to be about modifying a chiller system. I don't think we are talking about a chiller.
K8MHZ
Senior Member
- Occupation
- Electrician
That's what I was thinking.
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
A VFD is a good electrical solution to an identified mechanical problem if properly applied. But as electricians, we are not qualified to properly identify the mechanical problem and vet the solutions. Mention it, but turn it over to an HVAC specialist.
ptonsparky
Tom
- Occupation
- EC - retired
Maybe suggest NOT using the HVAC guy that installed it.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
In other words, to enable the OP to have an intelligent discussion with HVAC specialists.
The article discusses about retrofitting of various components of an HVAC system. Particularly the following para from the article addresses iwire objection.
- Location
- Massachusetts
:lol:
Its a sales paper, of course they say it can be easily implemented in any equipment.
The fact is, it wont be implemented in a typical restaurant RTU.
How are you sure about it?
Mgraw
Senior Member
- Location
- Opelousas, Louisiana
- Occupation
- Electrician
I am sure. You would need to modify the entire system. You can not just modify the airflow. The evaporator coil and the condenser coil would need to be modified. The compressor would need to be replaced with one that is designed for variable speed. The condenser fans would also need to be controlled. It would be cheaper to replace the unit with one that has those features already built in.
The OP's problem is noise from air flow. By installing a VSD for the blower motor, the air flow and so noise could be reduced consistent with the heat load, also bringing about energy saving. It is a part of conversion process of constant volume air conditioning system to variable volume air conditioning system. 100% energy saving due to above conversion may be realised by more exhaustive retrofitting as discussed.
Armed with above such knowledge, the OP may approach a HVAC specialist for his problem now.
Armed with above such knowledge, the OP may approach a HVAC specialist for his problem now.
- Location
- Massachusetts
The OP's problem is noise from air flow. By installing a VSD for the blower motor, the air flow and so noise could be reduced consistent with the heat load, also bringing about energy saving. It is a part of conversion process of constant volume air conditioning system to variable volume air conditioning system. 100% energy saving due to above conversion may be realised by more exhaustive retrofitting as discussed.
Armed with above such knowledge, the OP may approach a HVAC specialist for his problem now.
:lol:
I love the comedy you bring to the forum.
Mgraw
Senior Member
- Location
- Opelousas, Louisiana
- Occupation
- Electrician
The OP's problem is noise from air flow. By installing a VSD for the blower motor, the air flow and so noise could be reduced consistent with the heat load, also bringing about energy saving. It is a part of conversion process of constant volume air conditioning system to variable volume air conditioning system. 100% energy saving due to above conversion may be realised by more exhaustive retrofitting as discussed.
Armed with above such knowledge, the OP may approach a HVAC specialist for his problem now.
The OP's problem is the velocity of air and short run times. Adding a VFD alone is not a solution.
BTW I am a HVAC contractor and an electrician.
mgookin
Senior Member
- Location
- Fort Myers, FL
The OP's problem is noise from air flow. By installing a VSD for the blower motor, the air flow and so noise could be reduced consistent with the heat load, also bringing about energy saving. It is a part of conversion process of constant volume air conditioning system to variable volume air conditioning system. 100% energy saving due to above conversion may be realised by more exhaustive retrofitting as discussed.
Armed with above such knowledge, the OP may approach a HVAC specialist for his problem now.
Really? It says too hot and too cold.
I don't see the word noise.
electricman2
Senior Member
- Location
- North Carolina
- Occupation
- Retired Electrical Contractor
After 4 pages this is still the best reply. I have had customers ask for help with A/C or heat problems. I tell them I'm an electrician, they need to see a HVAC tech.
That's partly true. But as electricians, people get to rub elbows with HVAC techs. HVAC techs refer to us on electrical matters and sometimes go beyond electrical things and teach electricians about things HVAC techs do.
FYI, this problem is no surprise to me. This happens all the time; mismatches of equipment versus actual conditions. The good thing is, the HVAC equipment installed is bigger than the requirement, hence it can be tweaked to suit the application.
- Location
- Massachusetts
Rubbing elbows with another trade does not make us quilified to do that trade.
Regardless of our superhero electrical credentials.
Nobody claimed they're "qualified", that's for sure! People learn by asking others, and that's probably the biggest reason why Mike put up this forum. One came with a question, and we tell the guy there's a solution. How he does it, it's his thing. Pray, tell me that ain't so?Rubbing elbows with another trade does not make us quilified to do that trade.
Regardless of our superhero electrical credentials.
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