New Energy Efficiency Ratings

Nominal versus seasonal efficiency

Previously up until 2013, the air conditioning industry used a ‘nominal’ ratio for cooling “Energy Efficiency Ratio” (EER) and heating “Coefficient of Performance” (COP), however this resulted in a significant gap between predicted performance and what is actually achieved by the air conditioning / heat pump systems.

Nominal efficiency gives an indication of how efficient an air conditioner is when operating at full load in nominal conditions (not often achieved).

To rectify this, a more accurate method – the “Seasonal Efficiency’ Ratio” (SEER) – has now been developed, which provide a better measure of the real-life energy efficiency of air conditioning / heat pump systems.

Seasonal efficiency gives an indication of how efficient an air conditioner is when operating over an entire cooling or heating season (giving a more realistic efficiency measure).

Seasonal Energy Efficiency Ratio (SEER) & Seasonal Coefficient of Performance (SCOP)

The new seasonal energy efficiency ratio (SEER) & seasonal coefficient of performance (SCOP) take into account a number of factors, which together provide a much more realistic view of energy efficiency in real life conditions, including:

Energy performance in different climate zones
Efficiency at partial load capacity as well as full load
Energy consumption in auxiliary and stand by modes
Different load requirements through the seasons

Chillaire Limited offer a wide range of energy efficiency systems manufactured by leading brand names such as Daikin, Mitsubishi, Hitachi, Panasonic and many more. We select the right brand & model for the right application, giving the customer maximum capacity with maximum energy savings.

Midea Air Conditioners

Powrmatic Limited a preferred supplier of heating systems for Chillaire Limited, has recently announced that it will be supplying Midea air conditioning systems. Midea is a Chinese manufacturer, which appears to have turned its attention to the UK air conditioning market.

Chillaire Limited, who have been supplying and installing Powrmatic warm air gas fired heating units, destratification fans and gas fired radiant tube heating systems for the past 20 years, have been approached by Powrmatic to offer the Midea range to our customers at a very competitive price.

The Midea range has been around for a number of years, being available through some smaller distributors in the past, but it never quite managed to achieve the impact, that some of its rival brands enjoyed, at that time, such as,

Haier (Another Chinese Air Conditioning Brand)
Sanyo
Mitsui (Split & Portable Air Conditioners)
Funai (Split & Portable Air Conditioners)
Fuji Electric
Suzushi (Highcool)
Lennox (Split Type Air Conditioning Systems)
Axair (Climate Air Range)
Sharp Air Conditioners
Ebac
Amena

Chillaire Limited have been impressed with the quality of the equipment, although the range of equipment to choose from at this present time is limited.

We have added Midea the list of the vast range of brands offered by Chillaire Limited, we believe it could have a place amongst the other leading brands offered by Chillaire, such as Daikin, Hitachi, Mitsubishi, Toshiba, Fujitsu, Panasonic, LG, Vaillant, Samsung, Marstair, IMI, etc.

Powrmatic are not the first manufacturers of gas fired heating systems to turn their attention to the air conditioning market.

Vaillant, the manufacturers of gas fired boilers have successfully already been down this path. They started selling Vaillant air conditioning systems, a few years back and Chillaire have been installing Vaillant systems, especially into small Comms rooms, where we have found them to be ideal, very cost effective cooling solutions.

Sharp Air Conditioners

Chillaire Limited were one of the few companies offering Sharp air conditioners, that were one of the few air conditioning, heat pump inverter systems available back in the 1980’s to the late 1990’s. These Sharp systems were ideally suited for the domestic / residential air conditioning market. The Sharp inverter heat pump technology was ideal for conservatories, bedrooms & the lounge area.

The Sharp indoor units were sleek and small in size, one of the few in those days.

Recently it has been reported that Daikin may be a potential buyer of the Sharp air conditioning business in unconfirmed news reports emanating from Japan.

While having a presence in Europe – mainly in central and Eastern Europe – Sharp only ever flirted with the UK market. Chillaire Limited acquired these systems through one of the Sharp appointed national distributors Climate Equipment based in Solihull.

Sharp apart from specialising in residential air conditioning systems, also distributed a wide range of commercial type of portable units, split type systems and multi split type systems.

Chillaire have been a long standing distributor of Daikin equipment, going back to the early 1990’s, first starting to supply and install through Cooling Services (now part of Daikin UK Limited) and becoming a D1 partner soon after, having won dealer of the Midlands region in 1998, 1999 & 2003.

Energy Efficient Close Control Air Conditioning Systems, Designed, Supplied and Installed by Chillaire Limited

Energy Efficient Close Control Air Conditioning Systems, Designed, Supplied and Installed by Chillaire Limited

Airedale InRak high density IT cooling solution – EER up to 90.3 – 66% energy saving per annum with EC fan compared with a conventional CRAC unit

Airedale International has launched the InRak high performance, in-row cooling solution. Configured as DX (R410A) or chilled water, the InRak is designed to sit between industry standard server racks where it precisely cools and conditions air in close proximity to the servers.

Horizontal air flow

Innovative air flow management within the InRak transmits cooled air horizontally to the front of the server racks, taking the shortest, direct route to distributing cool air to where it is needed. Air is dispersed evenly along the aisle and any mixing of cold and rejected hot air is minimised, reducing the need for very low supply air temperatures particularly when the InRak in-row cooler is integrated with aisle containment.

High efficiency and resilience – industry leading cooling for footprint

InRak delivers complete confidence, with in-built resilience and excellent efficiencies, lifting the InRak’s EER to 90.3 during part load operation.

Providing industry-leading cooling for its footprint, the InRak offers the ultimate in scalable solutions for the modern data centre. It includes a top connection for rooms without a floor void and delivers even greater efficiency when combined with Airedale’s latest technology free-cooling chillers, offering over 95% free-cooling. In reducing the need for very low supply air temperatures, the InRak raises the free-cooling threshold.

EC centrifugal fans – up to 70% more efficient than AC fan at part load

The InRak is engineered with very low air flow resistance and can accommodate the latest EC centrifugal fans which offer up to 70% more efficiency at part load than AC fans, enabling the InRak to offer an EER of 90.3 (n+1). InRak provides a 66% energy saving per annum with EC fans when compared with a conventional computer room air conditioning (CRAC) unit.

EC inverter driven compressors – for variable capacity control

InRak features two scroll compressors in one circuit, comprising a fixed speed compressor working with an EC latest technology 20 – 120rps inverter compressor. The EC inverter driven scroll compressor operates more quietly and allows fully modulated cooling performance from 17 – 100%, saving substantial amounts of energy when operating at part load. Variable speed control enables the InRak to react to system load fluctuations to exactly match the cooling demand.

n+1 fan configuration for increased efficiency and uptime

Optional n+1 fan configuration enhanced by smart control logic and

EC fan technology, gives the InRak built-in redundancy and excellent part load efficiencies, increasing the InRak’s EER from 58.0 to 90.3 during part load operation.

To increase uptime, InRak’s optional n+1 configuration is designed so four fans run at 75% capacity during normal operation. In the unlikely event of a failure, the remaining three fans speed up to 100% to provide the same level of cooling. They then modulate back when a fourth fan is in operation again.

Energy saving benefits

 EER up to 90.3 in (n + 1) chilled water

 66% energy saving p.a. with EC fan – compared with a conventional CRAC unit

 A-frame heat exchanger provides 30% increase on a slab coil

 Integration with a free-cooling chiller (option)

 Designed and optimized for R410A

 EC inverter compressor for precise control and high part load efficiency

CMM Rooms, Clean Rooms & Laboratory Close Control Applications

Chillaire Limited continue to provide specialist close control systems for their clients, carrying out initial consultations to assess the requirement and then designing the right type of system.

Chillaire have designed and installed close control systems for Rolls Royce CMM rooms, which even today are still achieving conditions within very tight tolerances, on some sites to within plus or minus 0.3 Degrees Celsius temperature control and plus or minus 5% relative humidity (RH %) control.

Chillaire have been and continue to use the Eaton Williams brand of Colman Moducel air handling units, complete with chilled water coils and thyristor controlled electric heater banks. The chilled water is provided by installing Airedale chiller units, which provide the chilled water at variable stage capacity.

The installation of the Eaton Williams Colman Moducel air handling units, have been varying, from sitting internally on top of the CMM rooms to being located externally, in which case they have been specially modified at the factory and weatherproofed.

Chillaire have been installing dedicated control panels with Trend controls switchgear and a specially designed software package to control the whole system.

All work is installed to a BS standard, pipe work, electrical and duct work. All duct work is insulated with rockwool aluminium foil duct wrap held together with aluminium mesh. All chilled water ,steel pipe work is insulated with Koolspan aluminium rockwool insulation and a rubber layer is glued on around the pipe work to provide a final finish and protection.

Trace heating and pressurisation units are installed to stop the system freezing and developing air pockets.

All external ductwork & chilled water pipe work is finished off with Aluminium Stutco finish, pop riveted together.

Chillaire at the end of each installation carry out a temperature and relative humidity (RH %) mapping survey to ensure that the plant is performing as it should be over a 48 hour period and the results are then presented to the end client.

Chillaire have now been invited to get now be involved with these type of projects outside the UK, due to international customers having visited some of the sites in the UK to view these completed projects and being impressed with the design, installation and final results. Some of these projects may take place in Norway, Romania and France.

Chillaire Limited & GEA Denco for Chillers & Close Control Systems.

Traditionally Chillaire have been favouring the like of Airedale & Trane for Close Systems and Chillers, the main reason being Price, Quality was never really an issue. Recently Chillaire have put forward proposal for an indoor ducted air cooled Chiller unit by a past sales representative who has now moved to GEA Denco. GEA Happel air-cooled chillers for indoor installation

Chillaire have found GEA Denco to be very competitive for these products and have been putting forward these chillers to some their customers. One of the main features was the low noise levels dB(A)

Chillaire Installation Project with a GEA Denco Chiller with Duct Connection

The site of installation can move indoors, but the characteristics remain the same, since air-cooled GEA Happel chillers are also highly effective for indoor operation.

Fully hermetic scroll compressors provide the key components of these models. Depending on the system series selected, high-quality plate heat exchangers as evaporators, and finned tube heat exchangers as condensers, with the series with duct connection, round the systems off to provide an overall cost-effective solution.

The optimal model can be provided for each and any requirements: with the series GEA GSDC, GDC, and GLDC with duct connection, and with radial fans (in the performance range of 4.9-312 kW), and as split model with external condenser in the series GEA GRC and GLRC (in the performance range of 12-162 kW).

Optimized equipment configuration reduces operational costs

Energy-efficient HVAC climate control of computer centres, with GEA Ultra-Denco close control systems

The new GEA Ultra-Denco Close Control HVAC systems by GEA Air Treatment ensure exact temperatures and humidity in climate control. They were especially designed for employment in computer centres. This equipment range includes three sizes with a maximum cooling duty of 50 to 150 kW. New configuration and optimization of components – heat exchangers, filters, valves, and especially fans – have enabled GEA experts to minimize air- and water-side pressure drops and consequently to reduce power consumption by more than 50 %. Further savings potential is offered by the combination of systems with chillers that offer free-cooling functions: for example, GEA GLFC.

The Close Control HVAC units in the GEA Ultra-Denco Range are available, as standard, with 6-row high-capacity cooling banks and with modulating 3-point servovalves in 2- or 3-way versions – and with EC free-running (plug) fans. As a result of their efficiency of more than 90 %, EC fans – especially in partial-load mode as, for example, with standby redundant features – enable reduction of power consumption by up to 45 % in comparison to systems with AC fans in full-load mode. Location of the fans in a raised floor radically reduces flow reversal losses and thereby reduces power consumption of the overall unit by more than 50 %.

Enlarged filter surfaces – with the resulting reduction in pressure drop – lead to longer maintenance intervals. The large heavy-duty heat exchanger with 6-tube rows is designed for greater output: or for operation with more energy-efficient media temperature while enabling the same output. By optimization of the components through which water flows – such as heat exchangers, valves, and piping – GEA Denco has succeeded in extremely reducing water-side pressure drop.

Since the fans in this configuration pull in air only through the unit itself, the enclosure is not under pressure and is characterized by great air tightness. This prevents leaks. Service staff have simple access from the front to maintain the system.

The APC system provides constant pressure in the raised floor, up to the performance limit of the installed equipment.

Monitoring the pressure – and maintaining perfect climate control
When used in high-capacity server environments, a control-system combination with an automatic pressure-controlled system (APC) provides exact monitoring and optimization of the pressure prevailing in the raised floor. This configuration always supplies the correct amount of air that is momentarily required. Pressure-dependent control allows further reduction of power consumption by the fans. These solutions also minimize the risk of so-called hot spots: i.e., areas in which high temperatures can develop in small areas. This GEA system operates particularly effectively in combination with cold- and hot-aisle containment.

Free cooling opens up further potentials for saving
With cooling requirements over the entire year, one highly recommended solution is the combination of GEA Ultra-Denco Close Control HVAC units and chillers with free-cooling functions. As soon as these free-cooling systems can provide the water (or water-glycol mixture) 1 K below the required return-flow temperature, mixed operation is possible. At low air temperatures, it is often possible to switch off the compressor entirely: for example, during winter operation. This reduces compressor operation time and lowers power costs.

In Addition:

GEA Denco supply various other forms of air conditioning systems, such as DX cooling with Gas Fired Heating, Heat Pump Technology, Heat Recovery Systems, Heat Pump, Water Cooled Chillers, Air Cooled Chillers Indoor & Outdoor Types.

Refrigerant R22 Phase Out – Customers Need to Plan Ahead

R22 Refrigerant Gas Phase Out & Drop in Replacement

Phase out of R22 in refrigeration and air conditioning system’s –

Since 1^st January 2010 no more virgin refrigerant R22 can be used in existing systems.

After 2015 no more recycled refrigerant R22 can be used in existing systems.

If you have recently installed an R22 air conditioning system the phase out dates should be a cause for your concern. Your system will only require additional refrigerant should a leak or major repair is required and this can be effected within current legislation until 2015 and only reclaimed / recycled R22 gas can be used or if you happen to have any held on site as stock.

Existing units using R22 can not continue to be serviced with R22 since 1st of January 2010. Therefore new refrigerant can not be bought to fill this system only existing, stockpiled or reclaimed. In addition, the new substitute refrigerants cannot be used without making some changes to system components. As a result, service technicians who repair leaks to the system will continue to charge R22 into the system as part of that repair.

We are advising customers who have very old equipment to consider replacing the equipment, at some point in the next 3 years, as the cost of converting the old equipment, coupled with the potential for key components to fail, after the changes have been made, it makes more sense to put that money towards new equipment that will last with regular servicing 20 to 30 years.

We offer 3 years warranty on new equipment, this being subject to a service contract being in place with Chillaire with a minimum of 2 x service visits per annum. This removes any worries or concerns for any customer for the first 3 years at least, however we find that, any problems that are going to occur with a system, tend to occur in these first 3 years, if they don’t, the system will most likely run trouble free for years without any problems.

The only other checks required, would be the regular leak test inspections, as per the F Gas regulations, again with old equipment, the potential for gas leaks to occur are far higher than with new equipment.

The new equipment would be high energy efficient, so cheaper to run and will comply with the new energy assessment requirements set by the government.

Service Maintenance Contracts

Chillaire are keen to expand their service maintenance customer base and are offering very competitive rates, we understand the current economic times are difficult, customers are cutting back on maintenance, this is not always the best option, lack of maintenance can lead to higher cost later, when the plant begins to fail due to lack of care and attention.

Give Chillaire the opportunity to quote for your service maintenance contract requirements when your current contract expires.

We have trained and certified air conditioning and heating engineers.

Total Air Conditioning ● Heating ● Ventilation Solutions for all applications

Chillaire are based in the heart of England with various offices in surrounding areas, from where we provide a national service through our locally and remotely located engineers.
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CONTACT US

Freephone 024 7632 0300

Head Office
Patani House
16 Lythalls Lane
Coventry
West Midlands
CV6 6FG

service@chillaire.co.uk
sales@chillaire.co.uk

Monday	9:00 am – 5:00 pm
Tuesday	9:00 am – 5:00 pm
Wednesday	9:00 am – 5:00 pm
Thursday	9:00 am – 5:00 pm
Friday	9:00 am – 5:00 pm
Saturday	Closed
Sunday	Closed

Chillaire
Air Conditioning - Heating - Ventilation