Why the heart of the heating unit
Why the heart of the heating unit is still the gas-fired boiler
Technologies such as combined heat and power and biomass boilers ought to not be regarded as diversions to guaranteeing that the gas-fired boiler plant that is still needed operates as part of an efficient system even prior to other technologies are included. Stuart Turner of Hamworthy Heating offers an insight.
In November last year Amber Rudd, Secretary of State for Energy & Climate Change, set out the brand-new direction for the UK energy policy. She likewise stressed the significance of energy effectiveness to minimize costs, enhance productivity and competitiveness.
Echoing her words, something needs to be done to take on energy use in heating in the long term, and I think gas-fired boilers can assist significantly with improving energy efficiency in commercial buildings. Making small changes in the heating unit can make a substantial distinction.
Assisting to drive energy effectiveness in the boiler industry was the intro of the Energy Related Products Directive (ErP) last September for products that use energy. This legislation had a huge influence on the commercial heating and hot-water market, as it set out minimum performance requirements for numerous products, including gas-fired boilers. The efficiency requirements effectively erased the use of climatic and non-condensing boilers for the sub-400 kW market.
2015 also saw the introduction of the Energy Savings Opportunity Scheme (ESOS) a mandatory energy audit for big business (non SMEs). The audit highlights how energy efficient an organization is, in the hope they will act on the information to make enhancements.
Why is the Government doing this?
It identifies that lots can be done to enhance the effectiveness of our existing structures at a reasonably low expense. Improvements in efficiency will minimize our impact on the environment and aid meet the UK s lawfully binding target of slashing current greenhouse-gas emissions to 160 Mt of CO2 equivalents by 2050.
Renewable-energy products such as biomass boilers and combined heat and power (CHP) are very efficient for the right building and location. When it comes to biomass boilers, mindful factor to consider requires to be provided to the location.
However, with the majority of these systems a gas boiler is likewise had to support the renewable energy source sometimes of peak load, for security in case of failure or when service and maintenance is required.
One of our customers, Philip Kiss, building-services engineer at Canterbury City Council, is tasked with minimizing energy use across council-run structures in Canterbury and promotes the use of gas condensing boilers for doing this. This is why we have actually installed high-efficiency condensing boilers throughout many of our websites.
We understand it is quite possible to accomplish genuine, concrete savings immediately by upgrading boilers to newer more efficient, condensing boilers.
We have seen an example where a hospital could save over 1 million on its gas costs over the life of the boiler plant by altering from large output single-module old boilers to smaller-output newer condensing modular boilers. This is due to the capability of modular boilers to match the load as carefully as possible without any waste of energy.
Selecting the best product is simply the start, and I think this is among the issues of ErP. It is requiring customers to purchase an efficient product based on static information such as performances however does not make sure that the product is set up and operating correctly.
Condensing boilers set up in a system set at traditional operating temperatures of 80/60 C flow/return will just achieve marginally greater effectiveness than a high-efficiency non-condensing boiler. If operating temperature levels are decreased, generally to 50/30 C or the temperature differentials can be expanded to provide a lower return temperature (80/50 C) then there are considerable performance gains to be had.
The boiler is very much still at the heart of the heating system, but simply like the human body it requires to have efficient supporting equipment and regular maintenance to help it do its task efficiently. The water in the system needs to be regularly cleaned as just a 1 mm layer of limescale build up in the boiler heat exchanger can reduce efficiency by 7.5%.
Plus, we cannot fit and forget. Regular service and upkeep will assist keep the heater and boiler at maximum efficiency and ensure it has a long life.