Build September 2016

Build Magazine 78 The process industry has a lot in common with the construction sector in terms of ways of reducing energy consumption and CO2 emission. In both cases a key to sustainability lies in viable solutions that lower the operating costs by minimising heat transfer and therefore – the final energy demand. How much can a single factory save with proper insulation? ccording to Energy Savings Opportunity Scheme (ESOS) regulations, organisations that qualify as large undertakings must choose one or more routes to compliance that cover all areas of significant energy consumption and are bound to carry out ESOS assessments every 4 years. These assessments are audits of the energy used by their buildings, industrial processes and transport to identify cost-effective energy saving measures. Unfortunately, the savings potential is not always recognised. “The level of insulation applied may be based on a minimum investment decision following requirements regarding the maximum surface temperature to avoid personal injuries, minimum process needs or based on generic maximum heat loss rates only,” says Craig Treanor, Technical Support Manager at Paroc Ltd and certified TIPCHECK engineer. “There is a recognised gap between current and cost- effective insulation levels,” he adds. Recognising the potential How much could we save? The answer to that question can be found in the European Industrial Insulation Foundation report, ‘Climate Protection with rapid payback – Energy and CO2 savings potential of industrial insulation in EU-27’. According to the non-profit organisation, the share of equipment without insulation or with damaged insulation in EU is conservatively estimated to be 10%, 6% and 2% for low- middle- and high temperature surfaces respectively. There is a significant energy saving and CO2 mitigation potential related to improved thermal insulation in industry. This potential is currently untapped, despite being cost-effective to implement. Process Industry – What’s the Energy and Emission Savings Potential? The report covers several case studies where TIPCHECK energy audits were performed. In a chemical plant in France, 30 valves and 35 storage tanks rooftops were uninsulated, generating a total of 12.600 Mwh of unnecessary heat loss per year. “An investment of €100,000, which covered audit, insulation instalment and material costs, allowed to achieve approximately €405,000 of energy cost savings in the first year and €505,000 in the following years. Payback? Merely two and a half months,” explains Craig Treanor from Paroc Ltd. Paroc is one of Europe’s leading manufacturers of energy-efficient insulation solutions for new and renovated buildings, marine and offshore, acoustics and other industrial applications. Throughout its over 75-year history, the Finnish supplier has built a reputation for innovation, product performance, technical expertise and sustainability. Paroc aims to remain an innovative and trusted partner for a sustainable built environment. TIPCHECK (Technical Insulation Performance Check) is laid out in conformance with article 8, Annex 6 of the Energy Efficiency Directive, and with EN 16247 and ISO 50001/50002, as a contributing industrial process energy survey – and supports the requirement for auditing every 4 years, working to reduce energy consumption to reach the -20% target in 2020. The aim of the TIPCHECK Programme established by the European Industrial Insulation Foundation is to provide industry with a standardized, high quality thermal energy audit tool focusing on the thermal performance of technical insulation systems. TIPCHECKs quantify the amount of energy and money an industrial facility is losing with its current insulation system (including uninsulated parts). Payback on insulation investments can be clearly demonstrated by industrial site temperature and heat flow measurements, calculations and thermal imaging. Benefits for European industry The study goes the extra mile to describe the potential of energy and emission savings for all European Trading System members, including the UK. EIIF estimates that if the plant managers in EU-27 would consider economically viable solutions such as insulating bare surfaces to cost- effective levels and repairing damaged insulation in industry, we could save approximately 620 PJ of energy and cut the emission of CO2 by 49 Mt yearly. This energy savings potential is equivalent to the energy consumption of all Dutch industry, while the annual CO2 reductions potential is equivalent to 18 million medium-sized cars each running 12,500 kilometres per year. In order to tap into this potential, the assessors at EIIF estimate a one-time investment of €900 million is required. At current prices, it would help reduce industry production costs Europe- wide by €3.5 billion every year and diminish the gas import from Russia by up to 12.5% The average payback period of industrial insulation improvements is 1-2 years and it is easy to achieve compared to other Best Available Techniques. It can be even shorter depending on energy prices, energy losses and insulation costs. The complete study can be found on European Industrial Insulation Foundation’s website. A Sustainability & Eco