Air quality Webcast: Your questions answered

Additional questions from the July 26 "Keep your cool while keeping your facilities cool" webcast are answered here.

08/02/2016


Jim Magallanes, president of TechniCool Innovations Inc.At the recent Plant Engineering Webcast, "Keep your cool while keeping your facilities cool," there were a number of questions that could not be answered during the allotted time. Jim Magallanes, president of TechniCool Innovations Inc. and the presenter at the Webcast, answered a number of audience questions here. To view the on-demand version of the Webcast, click here:

Q: What are OSHA's Indoor Air Quality requirements for air temperature?

Magallanes: OSHA does not specifically give a temperature that you need to keep your plant under. However when the temperature goes above 95 degrees, they recommend the following to prevent any kind of heat related illness or injury:

1. Increase the employees' water intake

2. Increase the frequency and duration of breaks

3. Limit exposure of heat

Q: Please discuss:

1) Personnel work area cooling in large, open situation.

2) The most economical method to cool bulk powder materials (large capacity on-line).

Magallanes: 1) I would recommend cooling personnel work areas using small portable air conditioners in a larger warehouse space. Portable air conditioners provide the best way to keep your employees cool during the hot summer months.

2) I would recommend using a large ducted spot cooler to keep bulk powder materials cool. The mobile air conditioner provides cool dry air to keep the bulk powder material cool. A fan will help your employees keep cool by helping them perspire and regulate their body temperatures, but will not lower the temperature to keep the bulk powder cooler. An evaporative cooler will lower the temperature of the air, but will also add moisture to the air. The bulk power will absorb the moisture in the air, and may contaminate the powder.

Q: The portable units appear to have the heat exhaust close to the desired environment to cool. Are there any options like tubing to transport heat further from the unit to reduce air mixture and improve operating efficiency by keeping the input flow cooler? How about portable wall that might control air flow?

Magallanes: There is ducting that can be used to duct the cold air to the area that needs to be cooled. On the smaller 1-ton air conditioners the cold air can be ducted up to 40 feet and the larger 2-ton air conditioners can be ducted up to 60 feet. By ducting the cold air to the areas, the warm exhaust air will not to be ducted away.

Q: Any rules of thumb for airflow in a plant for employees and machinery?

Magallanes: There is no rule of thumb for airflow or cooling in a plant for employees or machinery. Inside a building the rule of thumb is 1-ton of cooling for every 400 sq. ft. However the goal of spot cooling in a warehouse is to blow the cold air directly onto the employee or machine. Portable spot coolers have a temperature drop between 15-25 F, depending on the humidity in the air. This will give you an idea of the temperature of the cold air that will be blown onto the employee or machine.

Q: What is the maximum CFM offered by ducted cooling, either air- or water-cooled?

Magallanes: The airflow of the portable air conditioner is dependent on the size of the air conditioner. The industrial portable air conditioners that can be ducted produce the following amounts of airflow volume:

  • 10,000 Btu/hr: 265 CFM
  • 13,200 Btu/hr: 440/380 CFM (High/Low)
  • 18,000 Btu/hr: 530 CFM
  • 24,000 Btu/hr: 708/600 CFM (High/Low)
  • 39,000 Btu/hr: 1060 CFM
  • 60,000 Btu/hr: 1580 CFM

Q: Are these unit clean room approved?

Magallanes: I don't know of any commercial portable air conditioners that have a clean room rating. The units come with standard foam filters that can be washed and clean. If you wanted to use these portable air conditioners in a clean room environment, and have a better filtering process on them I am sure you could use them in conjunction with a high efficiency HEPA filter. However you would need to use an inline fan to boost the airflow up to it's original specification, because a HEPA filter would severely decrease the airflow volume.



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
Safer human-robot collaboration; 2017 Maintenance Survey; Digital Training; Converting your lighting system
IIoT grows up; Six ways to lower IIoT costs; Six mobile safety strategies; 2017 Salary Survey
2016 Top Plant; 2016 Best Practices on manufacturing progress, efficiency, safety
Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
Automation modernization; Predictive analytics enable open connectivity; System integration success; Automation turns home brewer into brew house
Commissioning electrical systems; Designing emergency and standby generator systems; Paralleling switchgear generator systems
Natural gas for tomorrow's fleets; Colleges and universities moving to CHP; Power and steam and frozen foods

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.
Motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
Compressed air plays a vital role in most manufacturing plants, and availability of compressed air is crucial to a wide variety of operations.
Maintenance Manager; California Oils Corp.
Associate, Electrical Engineering; Wood Harbinger
Control Systems Engineer; Robert Bosch Corp.
click me