Ammonia Chillers

Frugus Water Cooled Ammonia Chiller

Industrial refrigeration service is the core of our business. The system components are packaged on a skid. Therefore, when the installation was carried out by the contractor it was quick and easy. The on-going maintenance is usually carried out three or four times a year- although bespoke maintenance schedules can be tailor made to your requirements. The flow rate needs to be adjusted by the engineer to ensure the chiller runs effectively. Problems arise when the correct flow is out of specification causing chiller trip outs. The compressor needs to run in normal operating conditions to load effectively. If the water system (or glycol as the case may be) is too small- the water system needs to be re-designed, adding new system components 

We are experts in the field of industrial refrigeration. We have state of the art ammonia safety equipment. Each engineer attends site with an ammonia kit-bag. Ammonia grade breathing apparatus is provided, tested, certificated and fit tested to the individual engineer. Our engineers wear full length overalls to protect exposed skin against ammonia splashes. Ammonia grade gloves and fit tested goggles are worn routinely. Each engineer has an electronic ammonia detector which alarms above the high level limit level, this warns the engineer he has reached his exposure time limit. Chemical suits are provided as part of the kit. Ammonia warning signs are provided to hang on the entrance and exit to the machine room; this is to warn other authorised engineers that the industrial refrigeration plant is being worked on

NH3 Kit Bag
NH3 Kit Bag
NH3 Compressor

Large bespoke systems are put together usually on food production sites. The compressors are installed in the machine room and can be valved off individually when they have failed. This means the remaining compressors can carry on supplying discharge gas to the condensers. A popular kind of condenser is the evaporative condenser in a Baltimore Aircoil cooling tower. After condensing, the liquid ammonia goes to liquid receivers before being supplied to the process. This kind of application can have tonnes of anhydrous ammonia in the system so the regulations require the plant to be contained in the machine room with no unauthorised access to personnel. A wind sock is used to determine wind direction in the case of a leak and  ammonia refuges are sited at strategic positions around the site. Industrial refrigeration sites often also use R404a. As we know 2020 is the start of the service ban for these refrigerants so this is a good opportunity to clear it out and install more ammonia systems

Countdown for R404a/ R422d Service Ban Above 40 Tonnes of CO2 Equivalent 


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