MYSON MYSON Eastern Avenue, Team Valley, Gateshead, Tyne & Wear NE11 0PG T: 0845 402 3434, F: 0191 491 7568, sales@myson.co.uk, www.myson.co.uk MYSON The Essential Guide to Panel Radiators with Low Temperature Heating Systems heatingthroughinnovation. www.myson.co.uk heatingthroughinnovation.
02 03 More Innovation More Efficiency Currently in the UK, we still use large amounts of energy to heat our buildings. The power we collectively use for heating accounts for over 10% of our national CO ² emissions. Designing a Modern Heating Solution In today s world of rising fuel prices and growing environmental concerns, high energy usage has become a problem that urgently needs to be addressed. Whilst providing indoor comfort remains the key objective for heating companies, the big industry challenge is how to achieve this aim in a more energy efficient and cost effective way. Continuous innovation is the key to meeting this challenge. This is why we have recently seen the introduction and growth of high efficiency, low temperature heating systems. Existing products, such as panel radiators, have also been significantly improved by the addition of new, energy efficient heating technology. This booklet has been created specifically to help people in the heating industry better understand how modern panel radiators have evolved and explain how they work just as efficiently with new, low temperature heating systems as they do with traditional high temperature systems. SELECT Compact Type 11 60 C 70 C 70 C MEAN RADIATOR TEMPERATURE 80 C SELECT Compact Type 33 60 C 70 C 80 C MYSON is part of a Finnish, family owned company called Rettig ICC (Indoor Climate Comfort). Rettig ICC has factories and sales operations in all major European markets, China and the USA and has annual sales of over EUR500 million. As part of Europe s leading radiator, controls and underfloor heating company, MYSON has made a major commitment to helping reduce CO 2 emissions by continually developing new and innovative products that are capable of operating more efficiently and more effectively at lower flow temperatures. To help communicate this highly important commitment, MYSON have introduced our own distinctive Eco logo. This now features on all our products that are compatible with renewable energy sources. It is our guarantee to you of economically and ecologically efficient heating performance. The full range of MYSON panel radiators proudly carries this seal of quality, guaranteeing their compatibility with all energy sources and their ability to generate significant savings on heating costs and reductions in CO 2 emissions. 50 C = 600 W @ ΔT50 C 50 C = 600 W @ ΔT25 C 45 C 40 C 30 C 20 C MEAN RADIATOR TEMPERATURE 40 C 30 C 20 C Based on a room temperature of 20 C Based on a room temperature of 20 C
04 05 Four Steps to Energy Efficiency While developing new technology and launching new products are vital parts of the drive to save heating energy, at MYSON, we believe that the best results can only be achieved by following a four step approach to heating systems. Step 1 Step 2 Step 3 Step 4 Insulation Check. Heat Loss Calculation. Heat Source Choice. Heat Emitter Selection. STEP 1 Insulation Check The first step to achieving energy efficiency, especially in older buildings, is to minimise heat losses. If a building does not meet modern insulation standards its heating system will never be truly energy efficient. Lower heat losses lead to lower heat demand and lower energy usage. STEP 2 Heat Loss Calculation The amount of heat required for a high level of comfort in a building varies from room to room. Individual heat loss calculations need to be made for every room in a building, taking into account factors such as size of walls, number of doors, size of windows and whether walls are interior or exterior. One size of heat emitter will not be ideal for all rooms! MYSON has developed a Heatloss CD, which enables you to make these calculations for your building and to specify the correct size and number of heat emitters required. Contact Customer Services on 0845 402 3434 to obtain your copy. STEP 3 Heat Source Choice In recent times, gas boilers have overwhelmingly been the UK s most popular choice for generating heat in buildings. Today, however, the list of options is growing fast with renewable technologies such as heat pumps, becoming more popular. Whilst upfront capital costs are higher, these low water temperature options can deliver significant energy savings compared with high water temperature systems. STEP 4 Heat Emitter Selection The key point of difference between alternative heat source choices and traditional gas boilers is that the system water is set at much lower temperatures. The difference can typically be in the range of 20-30 C. This has a significant impact on the suitability and performance level of the various types of heat emitter available. Making the right choice can improve efficiency, save energy and help reduce emissions.
06 07 High Efficiency Heat Sources and Panel Radiators The primary function of any heating system is to supply heating energy to a building so that its occupants feel comfortable. Typically, this means heating rooms to and maintaining them at a temperature of around 20 C. In the UK, the majority of our heating systems are water based, utilise gas boilers as their heat source and use panel radiators as their main type of heat emitter. Traditionally we use these boilers to heat water to 80 C in order to bring rooms up to a temperature of 20 C. The introduction of modern insulation materials and standards, however, has resulted in significantly reduced heat losses and, therefore, lower demand for heat in buildings. New heat sources, such as heat pumps, have been developed to work with system water set at significantly lower temperatures. It is no longer necessary to heat water to 80 C in order to achieve a room temperature of 20 C. A high efficiency heat source, with panel radiators and water at 40 C-50 C uses less energy and will quickly achieve a room temperature of 20 C. Heat pump Solar energy Biomass /wood Local/district heating Oil Gas Electric Modern panel radiators need only warm water to operate efficiently and so work well with all heat sources. They start performing as soon as the water in the system becomes warmer than the surrounding space. Low water temperature heating systems using modern panel radiators are one of the most efficient ways of using heating energy to deliver warmth.
08 09 Innovation in panel radiators - optimising heat output 1970s Plane panel structure and high water content Style and Innovation Panel radiators have benefitted enormously from continuous innovation in recent years. Modern units are manufactured using less steel and with a lower water content, utilising convector fins and incorporating individual thermostatic radiator valves to provide much improved energy efficiency, indoor comfort and versatility. Continued innovation also means that radiators no longer need to take up large areas of wall space. For example, MYSON have recently launched a T33 panel radiator model, which has three panels and three convectors. This is ideal for use with low water temperature heating systems as it has a very large surface area but is still extremely compact in size. It is deeper than a standard single panel radiator but, crucially, occupies only minimal wall space. Convector fins introduced between water channels Water content reduced and fins placed in contact with hotter channels Present Channels flattened and contact surface area maximised Modern panel radiators use less water, less energy and react more quickly to thermal heat changes.
10 11 Calculating Radiator Outputs Size Does Matter How the Delta T (ΔT) Table Works Based on room temperature of 20 C and radiator output of 1kW Mean Radiator Temperature ( C) Boiler (ΔT50 C) Renewable (ΔT25 C) Radiators for low temperature systems are physically and technically the same as traditional panel radiators. The only key factor which changes is sizing. The same size of radiator will not produce the same heat output with a low temperature system as it will with a high temperature system. Put simply, a radiator that is heated to 45 C will not produce as much warmth as one that is heated to 80 C. Whilst improvements in insulation have reduced demand for heat in buildings, if you are doing renovation work and fitting a heat pump where previously a gas boiler was in use, to achieve the same heat output you will generally still need to replace the existing radiators with new ones that have larger surface areas. The key is to ensure that heat loss calculations are made for each individual room in a building in order to accurately identify the correct size and number of radiators for each situation. Flow Temperature ( C) 80 50 70 45 Return Temperature ( C) 60 40 Boiler (ΔT50 C) Difference between mean radiator temperature and room temperature is 70 C - 20 C = 50 C. From conversion factor table, delta T (ΔT) factor for 50 C difference is 1. If MYSON S stated output is 1kW then multiplying this by 1 shows actual radiator output in these conditions is 1kW. Renewable (ΔT25 C) Difference between mean radiator temperature and room temperature is 45 C - 20 C = 25 C. From conversion factor table, delta T (ΔT) factor for 25 C difference is 0.41. If MYSON S stated output is 1kW then multiply this by 0.41 to get actual radiator output in these conditions (0.41 x 1 = 0.41kW). You therefore need to use at least two of this size radiator to meet 1kW requirement or choose a more powerful radiator with an output of 2.44kW as 0.41 x 2.44 = 1kW. NB: Please reference MYSON literature for a table of conversion factors.
12 13 Rapid Response Indoor Comfort Warmth is both one of life s necessities and one of its pleasures. Our bodies are programmed to seek out sources of warmth, such as the heat given off by an open fire. We do this even when the room temperature is already warm. The heat given off by a radiator is no different to that given off by a fire. Radiators have flexible heat output which means that they react quickly to changing temperature needs. They also distribute warmth easily and evenly across a complete building or individual rooms. The temperature is the same at head height as it is for your feet! Another significant advantage of panel radiators, especially those fitted with individual thermostatic controls, is that they react quickly and precisely to changing temperature needs. This means not just that they warm up quickly when heat is needed but also, equally importantly, that they cool down quickly and efficiently when heat is no longer required. Radiators are a visible source of warmth in a room and the human body can feel the heat they give off from a distance of about one metre. Warming yourself by a radiator is a similarly pleasurable experience to warming yourself by a fire or soaking up the summer sun. Whilst a lot of emphasis is placed on heat losses, an energy efficient heating system also has to be able to react rapidly to incidental heat gains within individual rooms. These heat gains could come, for example, from people entering a room, from sunlight or from electrical equipment being switched on. If the heating system cannot react quickly to these heat gains then rooms can quickly overheat and result in wasted energy.
14 15 Compatible with Underfloor Heating A common misperception is that heat pumps are suitable for use only with underfloor heating. In fact, they also function perfectly with modern panel radiators. Furthermore, with a low temperature heating system it is possible to use the same heating water for both radiators and underfloor heating. Panel radiators are ideally suited for use alongside underfloor heating and fan convectors in the same building. Each system complements the strengths of the other regarding convection, circulation, comfort and temperature profile. Panel radiators are widely recognised as the UK s most cost effective heating option. They have low capital investment costs, are easy to install and will operate practically maintenance free, as they have no moving parts and do not experience wear, for several decades. As a result, they have very low life cycle costs. More style More models The range of styles, outputs and sizes now available is also greater than ever. All MYSON panel radiators are manufactured in the UK and come with a 10-year warranty. Our range includes round top and classic seam top units. These are also both available in conventional and compact styles, the latter of which come complete with factory fitted top grilles and side panels. PREMIER Compact PREMIER HE SELECT Compact SELECT The MYSON product range is now also more widely available than ever before through leading national heating and plumbing merchants. For details, contact our Customer Services direct on 0845 402 3434 or visit www.myson.co.uk.