Carrier Rental Systems has supplied a long-term rental cooling solution exceeding 1 MegaWatt (MW) to one of the UK’s leading window manufacturers, following a chiller breakdown that halted production at its factory.
The failed unit provided all chilled water requirements for the window manufacturer. Following the breakdown, Carrier Rental Systems responded to an emergency call from the company to advise on a solution to enable production to resume as quickly as possible.
A specialist hospital in Northumbria is using the Daikin on Site remote monitoring system to help makes sure its operating theatres and wards are available to care for seriously ill and injured patients across the region.
DoS has been developed by the Daikin Applied (UK) (DAPUK) applied chiller engineering design team, working closely with Daikin Applied Service (DAPS UK) to provide a browser-based real-time view of a site’s chiller and AHU operation.
1 Don’t forget inhibitors
Glycol is an essential element of any heat transfer fluid used as part of a chilled water system, as it allows the fluid to be sufficiently chilled without freezing. However, an uninhibited glycol system can pose even more of a risk than plain water due to the highly corrosive nature of most glycols, so inhibitors must be used at all times.
For those operating in areas where there is a risk of incidental human contact, such as the food processing industry, the wrong inhibitors in an MPG solution creates a serious contamination risk, but an NSF-accredited glycol overcomes that.
2 Take regular water samples from various parts of the system
Corrosion and degradation can happen anywhere within a system and it’s not enough to take water samples from just one location. Samples need to be taken from available access points around the system and especially from high risk areas such as heat exchangers, cooling jackets and any other sensitive product-fluid interfaces.
3 Test fluid pH levels
Not taking pH level readings as part of routine water sampling can have a major negative impact on a system’s performance. While chiller pH tolerances will vary slightly depending on the materials used, I would recommend limits of 8.0 – 8.5. Incorrect pH levels may indicate that either not enough inhibitors have been used, or the glycol levels are too concentrated. Both scenarios can very quickly cause high levels of corrosion throughout a system if left unchecked, leading to costly maintenance bills and unplanned downtime.
4 Check the clarity of the sample
Not all tests are as in-depth as pH level, and one of the most obvious signs that a chiller system is degrading or corroding internally is when there’s visible debris in the water sample. A water sample from a chiller operating correctly should be clear and if it’s not, then there’s already some internal system damage. This needs to be addressed immediately as the debris can soon lead to blockages in key areas of operation such as the heat exchanger, which will rapidly decrease the chiller’s efficiency.
5 Chemically flush your system and chiller immediately after installation
As soon as a new chiller is installed, the whole system should be flushed immediately to ensure the fluid is completely free from contaminants and at the highest quality possible, with no legacy debris or surface contamination present to cause damage to the fluid, the pipework and the new equipment. This golden rule should be followed whether it’s a permanent or temporary installation for planned or reactive maintenance.
6 When in doubt, consult the experts
Given the intricacies of taking a thorough and correct chilled water system sample, sometimes it pays to call in an expert. Regular water sampling and off-site laboratory analysis is available as part of some chiller manufacturer’s aftersales and servicing packages – including Planned Preventative Maintenance Packages (PPM) from ICS Cool Energy.
The Bank of England is saving around £3,000 a week off its energy bills thanks to a £6.5 million project to replace chillers and plant used to cool the building and its 'critical infrastructure'.
The project used new Carrier chillers which replaced three old centrifugal chillers and two reciprocating chillers with a combined capacity of 4.2MW. The new chillers are very efficient variable sppeed chillers with a capacity of 5.8MW. In spite of the increased demand on the chillers, the Bank of England will save thousands a week thanks to the new chillers, as well as redcutions in carbin emissions and other running costs.
Will Hawkins flew out to Seoul, South Korea, to visit Samsung at the launch of its new air conditioning products.
Samsung had a big week, recently. The South Korean company kicked off its global campaign to introduce four new air conditioning solutions for the domestic and light commercial markets. They flew out the international ACR press and several hundred partners and customers to learn about products which Samsung hopes will help them reach further into new and existing markets.
Samsung arranged a slick round of 5-minute presentations on each product and a launch on stage reminiscent of another, USA-based technology company's product launches. It was delivered with a punch and focused on performance and style from the new products.
When the manufacturers have products made in a similar ways using similar components, what can Samsung do to make their solutions stand out?
(See the Samsung AC Forum Gallery)
As chiller manufacturer, Trane, begins its launch of five new commercial products into the European market, ACR Today editor, Will Hawkins, travelled to Charmes, site of the Trane’s factory in north-east France, to interview Jeff Moe, vice president of product management and marketing in Europe, Middle East and Africa, what is driving the developments.
Trane has been a leader in chillers for a long time, making its first chiller in 1938. However, the company has been low-key in its marketing activity more recently, and admitted they had not run a press event for over 10 years to talk about new products and developments in the business.