Ideal operating temperature?

March 2019 Editor's Choice, CCTV, Surveillance & Remote Monitoring

Walk into any CCTV control room in South Africa, whether in the middle of a heat wave or mid-winter, and you will probably see a number of operators wearing jackets, some huddled over slightly in an attempt to get warm. The reason is typically that the air conditioner in the control room has been set to a particularly low temperature, or that the air conditioner has been positioned in the room issuing cold air directly onto the operator positions.

Sometimes, the exception to this I’ve found are control rooms where the air conditioner has been deliberately switched off and the temperature is climbing to the high 20s or even entering the 30s.

With air cooling systems going back hundreds of years, and the advent of electrical air conditioners starting in 1902 with its invention by Willis Carrier, how can it be that we are still having problems with one of the most prevalent technologies in the world. We find air conditioning in the buildings we work, live and transit through, in cars and other vehicles, and in trains, planes and hotel rooms. As I write this, I’m in a hotel room with the air conditioner directly venting cold air onto my bed while it is 32 degrees outside. I’ve been in overheated training rooms while the temperature outside is below 12 degrees. Why is it so difficult to find a happy medium?

When dealing with air conditioning, and even air flow, we are faced with a range of contrasts. This includes people having different tolerances and preferences on temperature, and contrasts between the uneasy alliance of people against the welfare of electronic equipment which favours lower temperatures for stability and longer operating life. Even at home, my wife favours an open window in all weather conditions, while I resist the invasion of mosquitos in summer and freezing drafts in winter by wanting it closed as much as possible.

Throw a bunch of six or more people into a control room and the variety of demands is likely to get even more extreme. The literature recommends temperatures from 20 to 26 degrees for control room environments. Practically, however, these kinds of differences are experienced very differently by people. Some see 20 degrees as freezing, while others see 26 as sweltering. Personally, my comfort zone is about 24-25 degrees but others would see this as uncomfortably warm. Settings of 18 degrees are common in some control rooms and even hotels, and electronic equipment prefers operating in even lower conditions.

As is the case with any technology, the method of implementation is critical. As importantly as the actual temperature, the direct flow of a draft of cold air is likely to cause reactions by people. It also sets up the prime conditions for getting colds and flu with the prolonged exposure to drafts. Yet looking at air conditioning units, they are often placed in control rooms where the air is directed straight at operators.

In self-defence operators either bundle up, or switch off the system. There is some limited control with air direction being controlled by the conditioner air vents allowing fixed directions or distribution. Unfortunately, this is often inadequate, or these features are broken and never fixed.

Central air distribution conditioners are even worse, often positioned centrally to rooms and having little way of regulating air flow direction. Non-functional control panels are also common to some of these, making the problem even worse. Either features or the entire panel seems to fail on a regular basis, or the settings don’t seem to reflect the actual temperature of the air coming out of the unit.

The interfaces on control panels for a technology so integrated into our lives and daily use is also sometimes incredibly poor. My experiences in a Japanese hotel room and translated instructions was a once-off failure, but even using panels in English environments can be questionable in terms of getting desired outcomes.

Some practical recommendations are to avoid positioning air conditioners where they blow directly onto personnel in the control rooms. Ensure they are maintained and repaired when features fail. Avoid having people and equipment needing the same air conditioning unit and environment. I generally recommend a temperature of 23 to 24 degrees although this is my personal recommendation and not based on any scientific evidence. Even 23 degrees will be seen as cool by some staff so speak to people and try and get a consensus.

I’ve recommended drop down panels to change air flow in some cases to avoid excessive drafts. Make sure that systems are not switched off entirely as fresh air flow and avoiding higher temperatures ensures healthy air conditions and prevents fatigue and sleepiness. Use windows and fresh air if you can access it. Be aware that the movement of the sun can create direct heating effects on people in some positions where there are windows, and can also change the dynamics of heat within the control room.

Have a backup plan if the air conditioning goes off. If you use a centralised distribution system, ensure you have local controls to determine control room temperatures and air flow. Ultimately though, hope for a better design by suppliers of this technology that is so key to the welfare of all of us, and our equipment.


Credit(s)





Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

TAPA: The role of an effective treasury function in business risk management
June 2019, Technews Publishing , News
Neil Le Roux, the Founder of Diligent Advisors will speak at the TAPA SA (Transported Asset Protection Association) annual conference on 26 July 2019.

Read more...
iLegal 2019: Enhancing and empowering your control rooms
July 2019, Technews Publishing , News, Conferences & Events
iLegal 2019 will be held on 12 September 2019 at The Rosebank Crowne Plaza in Johannesburg. iLegal is the surveillance industry’s premier one-day conference hosted jointly by Hi-Tech Security Solutions and Dr Craig Donald.

Read more...
Residential Estate Security Conference 2019: Managing for efficiency
July 2019, Technews Publishing , News, Conferences & Events
The Residential Estate Security Conference 2019 will be held on 20 August 2019, once again at the Indaba Hotel in Fourways, Johannesburg.

Read more...
Spending to save
August 2019, Technews Publishing , News
As residential estates and complexes grow like weeds across South Africa, often promoting themselves as more secure than a stand-alone house, many are finding that close proximity to a neighbour or a ...

Read more...
Keeping our changing environment secure
August 2019 , Editor's Choice, Security Services & Risk Management
For a crime to take place there needs to be a victim and a criminal who sees an opportunity. For a cybercrime to take place we need the same set of circumstances.

Read more...
Augmented security with drones
August 2019, Drone Guards , Editor's Choice, Integrated Solutions
Drone Guards is moving into an untapped market of using drones to secure residential estates and other high-value assets such as mines, farms and commercial properties.

Read more...
The importance of real security risk assessments
August 2019, Sentinel Risk Management , Editor's Choice, Security Services & Risk Management, Residential Estate (Industry)
Andy Lawler, MD, Sentinel Risk Management, says a security risk assessment is an onerous task, but is not something estates can consider optional or a luxury item anymore.

Read more...
Risk assessment or product placement?
August 2019, Technews Publishing, Alwinco, SMC - Security Management Consultants , Editor's Choice, Security Services & Risk Management, Residential Estate (Industry)
Hi-tech security solutions asked a couple of experts to provide estate managers and security managers with some insights into what a ‘real’ risk assessment includes.

Read more...
How far are we really at with artificial intelligence?
August 2019, Axis Communications SA , Editor's Choice, CCTV, Surveillance & Remote Monitoring, IT infrastructure, Residential Estate (Industry)
Justin Ludik unpacks exactly how far AI has come and what it potentially can do for society and more importantly, surveillance.

Read more...
The importance of effective perimeter security
August 2019, Elf Rentals - Electronic Security Solutions, Stafix , Editor's Choice, CCTV, Surveillance & Remote Monitoring, Residential Estate (Industry)
Protecting the perimeter is critical for any residential estate; how does one go about making sure your perimeter is as secure as possible?

Read more...