Estrel Poseur Table 60cm Diameter 110cm High

From: £41.00 ex VAT

Attractive, round aluminium café table. Perfect for both inside and outside dining and will seat 2-4 adults. 4 legs ensures stability. Quick & easy to clean ready for your next customers.

bulk pricing furniture

Email or Call: +448451214656


Online orders are usually shipped within 24 hours.

Telephone ordering is welcomed.

Next day delivery can be arranged on certain items, please call us.

Quantity discounts available:

1-4 5-9 10+
£43.00 £42.00 £41.00

Finance is available with WestWon Ltd, please call us for details.

The Replacement of Server Room Air Conditioners Refrigerants

From 2015, it became illegal to use Hydrochlorofluorocarbons (HCFCs), including the ozone-depleting refrigerant gas R22, in refrigeration, heat pump and air conditioning (AC) systems. R22 was commonly used in cooling systems pre-dating 2004 and its ban has had a major effect on air-conditioning costs.

R22 Refrigerant History

R22 is a hydrochlorofluorocarbon (HCFC) and greenhouse gas with a high Ozone Depleting Potential (ODP) used as a refrigerant within air conditioning systems for server rooms and datacentre, process chillers and industrial refrigerant plants.

The refrigerant was banned from being used in newly manufactured systems from 1st January 2003 and from being stocked or used for topping up existing air conditioners from 1st January 2005. These changes were driven by EU legislation (the ODS Regulation 2037/2000) to enforce The Montreal Protocol to end the supply of R22 refrigerant by 2015 due to the effect the greenhouse has on the environment and ozone layer. The ending of supply not only affected the production of new air conditioners but also the maintenance of installed air conditioning systems using R22 refrigerants.

Replacing R22 In Air Conditioners

With suppliers no longer able to stock even reclaimed R22 refrigerant what options exist for organisations running legacy-based air conditioners within server rooms and datacentres?

The first option is to look to replace the existing air conditioner systems. This has several advantages:

  • A more environmentally friendly refrigerant that is compliant to current legislation such as R32.
  • More energy efficient systems designed to use less energy for the same kW cooling output.
  • New manufacturer warranty and potentially lower maintenance costs.

The second option is to look to replace the R22 refrigerant with an acceptable alternative such as R410A for air conditioners and R404A and R507 for general refrigeration. For this second option to work other parts of the cooling system may require replacement for compatibility.

Cooling System Replacement or Upgrade Options

When faced with the choice about whether to replace or upgrade an existing air conditioner the following checklist can provide some useful input:

  • The age, operational and maintenance history of the existing air conditioner. If the system is approaching 8-10 years it may be more economical to replace. If the exiting units have a history of leaks or other related flow problems the systems should be replaced,
  • The efficiency of the existing air conditioner. Newer systems tend to have higher operational efficiencies and lower operational costs to run leading to a faster payback period for the capital outlay.
  • The availability and suitability of replacement refrigerants and manufacturer guidelines and recommendations. Replacement refrigerants can lead to poorer performance and higher energy and running costs.
  • Budget costs and operational windows for downtime. The financial impact of project will depend on many factors and the decision on whether to replace or not may come down to the need for operational resilience and/or downtime window opportunities.

Any organisation running air conditioners using R22 refrigerant does not have to replace them provided that they are leak free and pressurised according to manufacturer instructions.

As an approximation most R22 refrigerant-based air conditioning and refrigeration units are around half-way or more through their working life. As existing systems start to fail they can be repaired or replaced as part of a general building refit.

Where a new cooling unit is required, the project must be well planned and executed to reduce downtime and ensure a smooth transition. If the site has little or no air conditioner redundancy (N+X) in its design, then site operations will probably have to be powered down for the new installation to take place or temporary cooling systems brought in.

Energy Efficiency Considerations

Energy saving is an important consideration to take into consideration. One can guarantee that future legislation will focus on energy saving and the lowering of carbon footprint when it comes to buildings and the systems they operate.

For landlords renting out office space or colocation datacentres offering server rooms and rack cabinets, energy and operational costs are passed onto clients and could impact overall price (rental) competitiveness. Savings can increase profits or provide more competitive rates.

Moving to more energy efficient air conditoning can lower overall running costs and improve the overall efficiency rating of a building.

In the UK all air conditioners over 12kW should be inspected by a professional company employing qualified energy assessors every 5 years under The Energy Performance of Buildings Directive. The purpose of the inspection is to assess the unit’s operational efficiency and effectiveness in terms of its size and suitability to the cooling loads. The inspection is an ideal time to consider whether to replace the air conditioning units and move to a new refrigerant based system.

As an alterantive refigerant, R410A is a zero-ozone depleting refrigerant and is more energy efficient than R22. When combined with new cooling, inverter and heat pump technologies the energy efficiency increase over an existing system can be as high as 30% or more opening up the potential for tax savings through Enhanced Capital Allowances.

Enhanced Capital Allowances (ECA)

The Carbon Trust administers the UK government’s ECA scheme which is designed to provide tax incentives through a first-year write-off for organisations that install equipment listed on the Energy Technology List (ETL). To be listed the equipment must meet certain energy efficiency thresholds set for its category and of course use compliant materials: refrigerants in the case of cooling systems.

Most air conditioner manufacturers for have systems approved and listed on the ETL providing installers like Server Room Environments with potential upgrade and replacement options for their datacentre and server room clients.

End of Life Recycling

In the UK there are many sites running R22 refrigerant-based air conditioners and cooling systems. Our cooling system experts are available for consultation and advice should you need to consider either an upgrade or replacement program for your on-site cooling systems. Simply call us to arrange a free site survey or telephone consultation.

Server Room Environments provides a complete project management service including environmentally friendly disposal and recycling. Even for fixed installation air conditioner systems not covered under WEEE we can achieve up to 95% recycling of removed systems through our recycling centres

Using R32 Refrigerant For New Server Room Air Conditioner Installations

Apart from the carbon dioxide associated with their manufacture and usage, all refrigerants have an additional environmental impact in that they contribute towards global warming. This gives rise to a specific metrix referred to as Global Warming Potential (GWP) which can be hundreds or thousands times greater than their associated carbon dioxide levels.  As a reference point carbon dioxide has a GWP=1.

R32 is rapidly emerging as the next best refrigerant for air conditioners as it offers advantages in terms of higher energy efficiency and lower environmental impact. This can be seen when comparing R32 to R410A:

  • R410A has a GWP of 2088 with 10Kg equivalent to 20.88 t of CO²
  • R32 has a GWP of 675 with 10Kg equivalent to 6.75 t of CO²

From the comparison it is evident that R32 can be up to 70% more environmentally friendly in terms of GWP and carbon dioxide than R410A. R32 therefore provides a means for the EU to meet its 2030 goal of phasing out and phasing down the usage of refrigerants with high GWP and carbon dioxide figures. A potential downside of R32 is that it is flammable and has a Class 2 (lower flammable refigerant) under ISO 5149, ISO 817 and EN 378. R32 is however non-toxic (identified as concentrations of 400ppm or less).

The greater advantages associated with R32 mean that most air conditioner manufacturers now include R32 refrigerant based products in their portfolio and many installers now offer these as their preferred choice. R32 refrigerant-based air conditioners are more energy efficient with lower running costs and noise output than traditional cooling systems. They are also more future-proof in terms of EU legislation on refrigerant usage.

Steel Emperor Banqueting Chair Green with Link

£19.95 £15.95 ex VAT

Green Banquet chair with steel frame and link feature (to hook chairs together). Stylish and strong, these chairs are great value. Stack 8 high

bulk pricing furniture

Email or Call: +448451214656


Online orders are usually shipped within 24 hours.

Telephone ordering is welcomed.

Next day delivery can be arranged on certain items, please call us.

Finance is available with WestWon Ltd, please call us for details.

The Future of Internet of Things Connected HVAC Systems

Internet of Things Enabled Air ConditionersThe statement that our world is becoming more inter-connected is an understatement when you consider ‘The Internet of Things’ (IoT). In the world of HVAC and cooling systems it is easy to see that air conditioning systems are becoming more intelligent with a greater range of remote communications options which should lead to improvements in operating costs and overall energy efficiency.

There are also sub-categories for IoT and one of the biggest is the Industrial Internet of Things (IIoT) which has come about to support automation under Industry 4.0 (The 4th Industrial Revolution).

What is the Internet of Things?

The ‘Internet of Things’ is a network of physical devices with embedded electronics, software and connectivity which enables remote monitoring and data exchange via the internet for management, control and energy saving. It is estimated that by 2020 over 30 billion devices will be connected to the IoT.

The IoT will change the way HVAC systems are monitored, analyses and controlled in the years to come to increase energy efficiency and ease of maintenance in particular.

The Advantages of IoT Enabled HVAC Devices v Traditional Systems

HVAC systems continue to evolve and one of the key developments aside from energy efficiency is in network connectivity. It is possible through SNMP to provide an air conditioning system with an IP address and add to a local network for management and control.

HVAC systems can also be connected to Building Management Systems (BMS) in a similar way or using more basic signal contacts.  In place of fixed wire systems remote control is also possible via wireless connections to handsets and thermostats. Most systems require an additional monitoring or communications card or adapter to allow this level of communication.

The Internet of Things adds a new dimension with the provision to add the HVAC devices to a wider and smart building network that can access sensors to detect the presence of occupants and personalise the heating or cooling settings of the rooms they use on a regular basis to their chosen set levels. These levels influence and guide individual elements within a building’s heating and cooling systems in terms of temperature levels, fan speeds, compressor speeds and air flow direction.

The IoT changes the way HVAC systems can be monitored and controlled through advanced information collection and analysis to bring advantages not just in terms of heating, ventilation, air conditioning and refrigeration but overall energy efficiency and operating cost control

Improved Operational Performance and Energy Efficiency

Connecting heating, ventilation and cooling systems to the IoT provides opportunities to improve operational performance and energy efficiency by linking performance to other data sets. These could include: weather forecasts, holiday periods and even local usage in smart buildings whose users are tagged to let the intelligent building system know whether they are on site or not and which rooms they are using.

This is an example of a form of artificial intelligence (AI) within a smart building as the HVAC systems make real-time adjustments to optimise their performance and adjust themselves within a range of operational parameters.

The benefits to the organisation realise themselves in terms of lower energy bills and improved energy efficiency with the potential to reduce costs by around 20-30% per annum compared to traditional or conventional HVAC systems.

Cloud Based Data Availability

Many organisations are moving their data operations to cloud based datacentres but are maintaining local service rooms or micro-datacentres on site. Using datacentres in the cloud enables HVAC manufacturers and related installation and maintenance resellers to access data on their field populations for trend analysis from a secure storage environment. For any HVAC device connected to the IoT, the device is visible in terms of its location, operational information and service requirements.

Real Time Monitoring and Control

The rate of adoption of smart thermostats and radiator controls within smart buildings is rising, whether these are domestic, commercial or industrial. It is now possible to control HVAC settings using an APP (software application) on an Apple or Android based phone and to receive alerts when temperature settings are exceeded, or systems switch on/off.

This is a direct result of the Internet of Things age and this level of connectivity will increase for other devices within a building including access and security and power management. Without this type of innovation, traditional controls remain a hinderance with increased costs and less opportunities to raise energy efficiency by maintaining a zoned-approach to heating and cooling.

Lower Maintenance Costs and Extended Maintenance Intervals

Clients will see improvements in overall reliability and maintenance for IoT connected HVAC and cooling systems. An air conditioner manufacturer will be able to monitor on a global basis those of its air conditioners that are connected to the internet. They can gather a range of important operational information from the systems to provide predictive failure rates and operational performance.

Service intervals could be increased for systems that are low-loaded or operating below a certain percentage level. Service intervals may also be extended for products whose overall reliability exceeds engineering forecasts.

Faster response time to alarms and service inspection requests is another potential outcome with both manufacturers, distributors and their resale partners connected to the internet and monitoring portals.

Where new firmware features are introduced these could be despatched globally through the Internet for each HVAC or cooling system to download and upgrade themselves. Firmware improvements could lead to increased energy efficiency and lower operating costs.

Enhanced Life Cycle Management

Conventional HVAC systems have an operating life that can be extended using smarter technologies and the advantages for predictive failures and maintenance management. Replaced systems could also be renovated for deployment in a second user market rather than simply recycled. These two aspects have a direct environmental impact and helps organisations to meet their environmental and sustainability objectives.

Internet enabled cooling systems with open protocols provide opportunities for App developers and their imagination and entrepreneurial drives. Applications could be created to improve local management or interface with other IoT devices on site.

There are many non-profit organisations which have incorporated protocols that enable IoT to be used with their systems. By joining these organisations, you will be able to cut short your development time and join the communities of companies with products that are certified to be used in that environment.

Overall the Internet of Things will lead to many improvements in how devices are managed, the loading on national grids and their energy efficiency management. The benefits cannot however be made without taking care when it comes to one major area of concern which is that of Cyber Security.

For devices connected to the Internet even greater care must be taken in terms of providing gateway security and access to onsite networks. This will be one of the biggest concerns to organisations running one or more datacentres or server rooms. For these types of facility cooling is one of their biggest costs and they stand to benefit the most from Internet of Things enabled air conditioning, cooling, refrigeration and heating system management and control and their interface with smart building technologies.

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