CHP Case Studies

The Burlington Hotel Dublin - A CHP Case Study At the Jurys Doyle Hotel Group one of the main objectives is to offer a high standard of service whilst offering customers value for money. The group achieves this by running the hotels efficiently, and keeping costs to a minimum. One of the largest costs for any company is energy expenditure and with this in mind the hotel group decided to implement Combined Heat and Power (CHP) Technology in conjunction with an Energy Management System (EMS) into the Jurys Doyle Burlington Hotel situated in Ballsbridge, near central Dublin.

The use of Combined Heat and Power would allow the hotel group to produce electricity onsite at a lower cost and benefit from the heat produced as a by product of the generation process.

The Jurys Doyle Burlington Hotel is Ireland’s largest hotel with over 500 bedrooms, excellent conference facilities and an exceptionally high degree of comfort, decor and service. A hotel of this size is perfect for the application of Combined Heat and Power technology as it has a high electrical and heat requirement.

The hotel group selected Limerick based Temp Technology Ltd to provide, install and maintain the CHP system. Temp Technology has been operating in the CHP market for many years and with over 80 installations to date they are one of Ireland’s leading CHP suppliers with a high level of operational experience.

Maximum Demand Reduction

The CHP installed by Temp Technology at the Burlington Hotel avails of ESB's maximum demand tariff. By reducing its peak demand at specific periods i.e. spreading its electricity usage more evenly, it can achieve substantial savings on its electricity bill. CHP helps considerably in this regard as it provides 185kW of electricity, which would otherwise be supplied by ESB.

Additionally, because of the high availability of the CHP unit, the reduced demand due to the tighter control by the Energy Management System and the judicious switching out of nonessential loads by the EMS, maximum demand reductions of 260kW (min)-495kW(max) have been achieved.

Savings

The Jurys Doyle Hotel Group are now receiving very substantial savings, at the Jurys Doyle Burlington Hotel as a result of their CHP installation. Environmental Savings During one year’s generation a 185kWe CHP unit will displace 1,154 tons of carbon dioxide from escaping into the atmosphere each year compared to conventional heat and power generation.

Maintenance

Temp Technology carries out all maintenance of the Burlington’s CHP scheme. The unit is equipped with an on board computer which allows continuous monitoring of the unit via modem. This expert systems allows Temp Technology to produce monthly performance reports and to identify any problems with the unit before a breakdown occurs.

Temp Technology also carries out routine maintenance every 800 hours - a service that includes the replacements of oil and filters, oil quality, sparkplugs, and an engine performance analysis.

As a result of their CHP installation the Jurys Doyle Hotel Group are now receiving savings in excess of €73,000 per annum at the Jurys Doyle Burlington Hotel whilst making a positive contribution to the environment and the CHP system reduces the amount of energy consumed and the harmful Carbon Dioxide gas produced.

The Burlington Hotel Dublin was one of the first Irish Hotels to install CHP. Many others have since followed and there is almost certain to be a case study available relevant to any hotel considering CHP- irrespective of size. Contact Sustainable Energy Ireland in the first instance or see the list of CHP developers at the back of this guide.

Carbery - CM Power Cork Carbery Milk Products was formed in 1965 as a joint venture between Express Dairies, a UK based dairy processing company, and the four West Cork Co-operatives: Bandon, Barryroe, Drinagh and Lisavaird. In 1992 these four co-operatives acquired the full shareholding of Carbery Milk Products. Carbery is now one of Ireland's most technologically advanced food companies, which through pioneering research has developed a leading range of quality food products. Using leading edge cheese production technology, Carbery's output of cheddar, low fat, speciality, vegetarian and mozzarella cheeses are produced to exacting standards.

The company is particularly well known for its whey processing technology, which enables the company to manufacture a large range of protein and based food ingredients. Carbery's whey processing technology is also used in the fermentation of lactose into ethanol, making the company a major supplier of neutral spirit to the Drinks, Flavour Extraction and Industrial Sectors.

CM Power - a BG CoGen and Carbery Joint Venture

In 2000, BG CoGen and Carbery Milk Products formed a joint venture, CM Power, to develop a cogeneration installation at Carbery's Ballineen production facility. Based on the electricity and heat load of the site, it was deemed that a CHP Gas Turbine would best fit the plant requirements. Following a competitive tendering process, an Alstom 5.2MWe Typhoon Gas Turbine and generator was commissioned for site use.

Aside from the installation of the actual Gas Turbine, a number of modifications were required to the Ballineen plant's infrastructure to facilitate the optimal operation of the cogeneration unit. This necessitated the installation of an Aalborg Water Tube Boiler and a complete ABB SCADA control system, to integrate all of Carbery's boilers with the CHP module. The CHP unit was constructed within a block building with a storage area and a self contained control room for the equipment.

The Ballineen CHP plant became operational in May 2001, and will generate significant energy input cost saving throughout its operational life. The nature of the joint venture agreement between developer BG CoGen and Carbery Milk Products will ensure that both partners will directly appreciate the benefits of CHP usage.

The dairy industry has been to the forefront of CHP uptake in Ireland. Carbery Milk Products is one of the more recent large-scale CHP installations in the dairy sector. The cost savings generated by the investment will no doubt help keep Carbery in a leading position in the competitive markets it serves.

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© Irish CHP Association. Last Updated: Fri 13 May 2005.