ENERGY SAVING EQUIPMENT
Complete control with Advanced kit
Williams Refrigeration takes Jade to the next level
W I
n a typical UK commercial building, the air conditioning system consumes more electricity than the heating bill, the office equipment, or two or three times the amount of energy used by the building’s entire lighting system. It is the single biggest consumer of energy, which is why keeping air conditioning equipment serviced and maintained to run at peak efficiency is one of the easiest ways to reduce energy, save money and enhance corporate reputation by lowering a building’s carbon footprint. Fortunately, help is at hand through an intelligent manifold that gives instant reports on exactly how energy efficient your client’s air conditioning system is.
One of the simplest ways to continually check air conditioning efficiency over time is for service engineers to use the right equipment to provide this information. While most digital gauges used by maintenance engineers don’t have this facility, one that does is the Imperial iManifold, the first of a new breed of ‘intelligent’ digital manifolds. During servicing, if an engineer is using the iManifold, he will be able to produce a range of instant technical reports on a system’s efficiency and performance, including live measurements of the EER (Energy Efficiency Ratio) of an air conditioning system.
This can be plotted on live graphs in the field, and detailed reports can be immediately emailed to clients as a permanent record of their air conditioning system’s overall energy efficiency. Because this measurement is instantly repeatable, these reports can be compared over time, allowing engineers to monitor and control the efficiency of the air conditioning system and spot trends for peak energy usage throughout the year.
36 August 2016
illiams Refrigeration’s Jade range is aimed at caterers and, according to the company, delivers on performance, reliability,
affordability and efficiency, as well as looking good. Williams has now redesigned and improved the Jade range of cabinets and counters, making them Williams’ most energy efficient range to date.
From the outside the Jade cabinets and counters look the same – sleek, aesthetically-pleasing, functional design – but everything you can’t see, such as compressor and condenser type, airflow design, as well as gaskets, self-closing door and hinge mechanisms, has been improved.
Williams has also upped the usable space inside, while at the same time increasing the thickness of the insulation - making the units perfect for busy kitchens which want more refrigeration space on the same footprint.
Fujitsu fits a ‘human sensor’ E
ven though most modern air conditioning system room controllers are equipped with a variety of programmable timers, very few of these timers are actually ever used. This is particularly prevalent on smaller 1:1 and multi type systems in homes and smaller commercial buildings.
Many users tend to rely on turning their systems on and off manually. The problem with this is that people are very good at turning things on but not so good at remembering to turn them off at the end of the working day or when they leave a room. As a result, air conditioning systems are often left on in unoccupied rooms longer than needed. Most modern air conditioning system controllers have a variety of timers or energy saving features in them as standard such as a seven day timer with multiple programmable on/off times per day. So why aren’t these timers in the system controllers used as a matter of course? Common reasons are that the user doesn’t know at the time of installation what their usage times will be, or that the building is unoccupied at the time of installation. Operating manuals with information on how to set the timer functions are often not left with the user. Or perhaps no maintenance contract is in place so no one visits the building regularly who could assist or teach the user how to change settings and timers. To combat the problem of wasted energy many
air conditioning systems are now being offered with infrared sensors (PIR type) which can operate in one of two ways. ■ If no one is sensed in the room the system allows the space temperature to drift by 2°C-3°C to save energy. When someone enters the room the system returns the space temperature back to the set-point
■ If no one is sensed in the room the system automatically turns off after 30 minutes.
A typical application for this would be a conference or board room which is not used on a regular basis. A ‘human sensor’ is available is available for the latest Fujitsu Circular Flow Cassette models. The sensor fits in the corner section of the grille and can perform both functions to save energy.
www.acr-news.com
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