Tag Archives: heat pumps

CIBSE CPD-accredited Panasonic webinars on AC and heat pumps

Vincent Mahony, National Sales Manager, Panasonic Ireland

The team at Panasonic Ireland is currently presenting a series of CIBSE CPD-accredited interactive, online  courses to enhance skills during these unprecedented times. The CPD courses have been developed by Panasonic and support learning in a variety of heating and cooling disciplines and cover the following topics.

Principles of Air Conditioning – Overview of Splits/VRF Technology                        This is an introduction to the principles of air conditioning. The session details the fundamentals of air conditioning and goes on to describe the refrigeration cycle, heating and cooling load calculations, system components and unit selection.

An Introduction to Air to Water Technology                                                                    This CPD looks at using heat pumps to heat water and compares these systems to traditional gas boilers and further provides advice into system design and components. The session also goes through calculating heat losses in houses and sizing heat emitters.

Overview of Gas Heat Pumps (GHP) Technology                                                              The history and development of using gas as the power source for a VRF system. The CPD explains why this type of solution may be considered as an alternative to electric. The session compares the two options and details the design of the system.

To participate in any of the above email eamonn.kent@eu.panasonic.com or call  087 – 439 4032 for details on how to join your preferred session.

Origen appoints Paul Begadon

Paul Begadon, Origen Energy

Paul Begadon has moved from Hevac to sister-company Origen Energy where he is now responsible for the design, sale, installation, and maintenance of both commercial and residential energy systems including combined heat and power (CHP), heat pumps, solar systems, district heating, and mechanical heat recovery ventilation (MVHR). Origen are one of Ireland’s leading suppliers to the renewable energy industry.

Paul’s role with Origen entails the design, sale, installation, and maintenance of both commercial and residential energy systems including combined heat and power (CHP), heat pumps, solar systems, district heating, and mechanical heat recovery ventilation (MVHR). Paul previously served as a heavy vehicle mechanic with the Irish Defence Forces for nine years, while also completing his degree part-time in Energy and Environmental Engineering at ITT Dublin.

Contact: Paul Begadon, Origen Energy. Tel: 01 – 419 1919; email: paul.begadon@origen.ie

Revision to EN 378 Now in Force

The Institute of Refrigeration Ireland (IRI) sits on the EN 378 Technical Committee and the Working Group, and both continue to meet two or three times per year to address outstanding queries and ongoing developments relating to the Standard. The next meeting is scheduled to take place in Aachen in November 2017.

Familiarity with EN 378:2016 is crucial for companies who design, construct, install, commission, operate, maintain or use vapour compression systems for refrigeration, air-conditioning, heat pumps and chillers.

The Standard is published in four parts and, thanks to IRI’s active participation in the Working Group and its engagement with the National Standards Authority of Ireland (NSAI), it has secured a very significant discounted price of €155 for IRI members for the full set of four parts. As far as IRI is aware, this is the lowest price for the Standard in any EU member state, even with the IRI membership fee included!

It is worth noting that Part 2 (and the introduction, terms and definitions of Part 1) of EN 378 are harmonised with the Pressure Equipment from the Pressure Gauge Distributor and the Machinery Directive. In fact, one of the drivers for the revision was to better align EN 378 with the Pressure Equipment Directive which has itself also been revised.

Members wishing to purchase a copy of the four parts of the EN 378:2016 Standard should contact the NSAI directly. Simply send an email with your name and IRI membership number to info@ standards.ie and quote “special IRI members’ discount for IS EN 378 Parts 1 to 4: 2016”. Alternatively call NSAI at 01- 857 6730.

JOIN THE IRI                                                                                                                                                             If you are not a member of the IRI and wish to avail of the offer then contact the Institute of Refrigeration Ireland. You can join by calling 0402 – 23586, or by emailing info@ instituteofrefrigerationireland.ie

Can you hear the Eco?

Cover square webIf not, then you are not listening. Contrary to what some commentators would have you believe, the building services industry is behaving in a very responsible manner when it comes to the environment, sustainability and energy saving.

The issue of Building Services News is awash with evidence of the sector’s determination not just to help Ireland realise its EU 2020 obligations, but also to honour the spirit of its objectives.

In addition to a wealth of information on all manner of innovative product developments from individual companies, there are also articles from leading regulatory bodies and industry representative associations pointing the way forward.

System designers, contractors, installers and other key decision-makers will find a wealth of advice, guidance and informed opinion in this latest issue of Building Services News. To Hear the Eco log on to issuu.com/patlehane/docs/bsnews_jan_feb_2017_web_file

Why heat pumps? — cost, comfort and the environment

Paul Kenny, Chief Executive Officer, Tipperary Energy Agency.

Paul Kenny, Chief Executive Officer,
Tipperary Energy Agency.

However, based on the heat road map for Europe that shows heat pumps are a core technology for decarbonising heat,and considering that 20% of Swedish homes are heated by heat pumps, it is clear that heat pump technology works, even in cold climates, most contractors choose to use Construction Portable Heaters even if it is temporary. This view is endorsed by many industry experts. So, why should someone install an air source heat pump to heat their home, and what are the key considerations? There are three reasons – cost, comfort and the environment — writes Paul Kenny, Chief Executive Officer, Tipperary Energy Agency.

First of all, I’d like to dispel some myths:

• Heat pumps (the majority of the Irish market players use R410a) work down to minus 20ºC;

• Ireland isn’t that cold, with average winter temperatures of 7ºC and the mean daily minimum above 2ºC all year round;

• If one were to click here, they’d know that heat pumps work really well at 7ºC air temperature and 35ºC flow temperature (typically COP of 4.5 in the lab, and over 4 in real world applications);

• There is no need for a back-up immersion or boiler. We do generally ensure a high-efficiency stove is installed in our retrofitted buildings, but we find most people don’t use them with cheap even heat from the heat pump;

• Radiators are not radiators, they are really convectors, and they put out heat at all temperatures above the room temperature they are located in. So, if the boiler used to run for six hours and now runs for 24 hours, the flow temperature versus room temperature can come down by 75%, eg 60ºC to 30ºC (room at 20ºC);

• Heat pumps can heat water to 55ºC, and a top-up heating cycle using an existing immersion heater for legionella control uses a few kWh per annum when required.

The methodology employed by Superhomes is to design and install ASHPs into radiators that are oversized in comparison to typical radiators, i.e. low-temperature radiators. This allows a higher heat output at lower flow and return temperature. The design of the emitters allows the heat pump run at about 31ºC, 27ºC return at 7ºC external temperature. The heat pumps are commissioned to be “always on”, thereby maintaining a steady indoor temperature at the desired set point.

Therefore, the heat pump only needs to replace the energy that is lost from the building fabric – typically 2-3 kW at 7ºC. The resultant impact on the heat pump is that the required output per radiator is generally only 150-300w and minimises the flow temperature (maximising efficiency), resulting in typical heating (not hot water) performance of between 3.3 and 3.6 average co-efficient of performance throughout the heating season.

Using an average delivered energy cost of 11c/kWh (40% night and 60% day rate, bonkers.ie 14/01/17), this delivers heat at a little over 3.1c/kWh. Compare this to natural gas (86% efficiency and standing charge €92 split of 15MWh) of 6.4c/kWh, and oil (59c/l) at 9.2c/kWh delivered into the house. The ongoing heat cost is one third of oil and half that of gas. For those knowledgeable in energy price predictions, the likelihood of oil and gas rising versus electricity is likely to continue.

Hot water heating cycles typically rise from 30ºC flow temperature to 58-60ºC flow temperature and do have a lower co-efficient of performance than heating, typically about 2.4-2.6 over a season. This, usually completed at night for the bulk of heating (80% night (6.6c), 20% day (14c)) results in a net heat cost of 3.25c/kWh, similar to heating, and similar margins below the alternate fossil fuels.

In conjunction with the installation of an air source heat pump, and steady interior temperatures, air leakage must be reduced, ideally to an air change rate of 3-5 air changes per hour under 50 pascals of pressure, corresponding to an average rate of 0.15-0.25 air changes from infiltration in typical conditions.

Once this is achieved a designed ventilation system must be used. In the case of Superhomes, demand control ventilation is employed. This designed mechanical extract system ensures a steady, low and controlled flow of fresh air into the dwelling.

The impact of this commissioning to maintain a constant temperature in the dwelling has a number of “symptoms”. Steady air temperatures encourage walls to rise to a more even higher temperature, thereby lowering the radiative heat loss from people to surrounding surfaces and adding to the feeling of comfort. This also increases the interior temperature at thermal bridges, thereby increasing the dew point of condensation, and lowering the likelihood of condensation, mould and ill health. Coupled with the ventilation system, almost all the surveyed participants in Superhomes report that they have noticed a significant reduction in condensation.

Finally, the carbon performance of homes utilising heat pumps versus oil and gas should be understood in the context of steadiliy-decreasing carbon content of electricity. It is currently 467g CO2/ kWh of electricity, 205 for natural gas, 257 for kerosene, 229 for LPG. Forecasting this to 2030, it is, in the absence of peat and coal thermal plants and with increasing renewable electricity, likely to be below 300g/kWh CO2. Utilising an average heating and hot water COP of 3.2 (this is being achieved on an annual basis in Superhomes houses) we can see that the carbon per net kWh of heat from a heat pump will be 145 in 2015 and 90g/ kWh in 2030, versus natural gas (86% efficient boiler) at 238, and 266 and 299 for LPG and kerosene heating oil respectively. So, this equates to a 39% and 58% cut today per net kWh and a 60-70% cut by 2030.

Without getting too technical, this also puts the carbon emissions of the individual houses into the European emissions trading scheme, which moves them from the state’s carbon balance sheet and also, in theory, in  a cap and trade marketplace, pushes out higher polluting carbon-intensive electricity sources.

In a new build situation, the marginal cost of installing a heat pump, appropriate cylinder and potentially larger radiators versus gas + connection or oil + tank is likely to be similar in cost to that of the photovoltaics required with the gas or oil boiler for compliance with Part L of the Building Regulations. The savings will ensure that even outside of compliance, investment will be returned in the first three to five years at worst.

The insulation or buffering from energy price increases is also worth some peace of mind. In terms of retrofit, the economic case is slightly less generous. The catch is that the cost of a retrofit of this nature – including the airtightness measures, the ventilation system and the heat pump – is unlikely to be less than €15,000. Over the next 20 years this is about €3.75 per heating day, gobbling up about 50% -70% of the savings. If we take energy price inflation into account, using the last 15 years as an indication of the next 15, this is likely to break even in 10 to 12 years. A 35% SEAI grant, available within the Superhomes programme, will bring this to seven to ten years.

So, economically home-owners will not win or lose in the short-term, but environmentally and from a comfort point of view, they will be significantly better off, as will their children going forward.

Heat pumps – time to move to ‘system integration’

 Thomas Nowak, Secretary General

Thomas Nowak, Secretary General

In Ireland, the Heat Pump Association’s sales figures for 2015 fully reflect this pattern, showing an increase of 67.76% on the previous year, making for a total of 3902 units sold. Indications for the first six months of 2016 are for another bumper year in store. This overall growth is mainly driven by the strong segment of air-sourced heat pumps, a renewable technology that finds increasing attention in European and national statistics, according to EPHA.

Geographically, most of the growth can be attributed to increased sales in countries such as Spain (+15%), Italy (+20%) and France (+8%). However, as indicated, Ireland had by far the greatest percentage growth, albeit from a lower starting point. “These figures could increase further in these countries if an appropriate framework would be set at EU level to account for renewable cooling“, commented Pascal Westring, EHPA expert in statistics. This issue is being addressed by the Commission this year, with the Heating & Cooling Strategy and revision of the Renewable Energy Directive.

“Technology-neutrality”                                                                                                             Looking at the sales potential identified by EHPA, if European markets would reach the same maturity level as the Swedish one, the European heat pump stock could realistically grow to 60 million units, enough to replace today’s imported Russian gas for heating purposes.

“We are not yet there”, says Thomas Nowak, Secretary General of EHPA, “but interest in heat pump technology is on the rise across Europe. A growing number of experts conclude that decarbonisation of the heating sector is impossible without heat pumps.

“Civil society is also turning to the technology. We see a growing number of cities applying to our ‘heat pump city of the year award’. Yet, EU policy-makers prefer to remain technology-neutral. Instead, they should create framework conditions that favour the most efficient and best performing technologies. When the state of our planet requires immediate action, high ambition must be the answer.”

Integrated solutions = heat pumps                                                                                                               Thomas Nowak added: “A catchy word in Brussels energy discussion nowadays is ‘integrated approach’. Heat pumps are the perfect system integration technology for a resilient Energy Union. They are a bridge between the electricity and the thermal sector, between heating and cooling. They can be combined with residual heat, district heating, cogeneration and other RES solutions. Maybe system integration could be the new way forward to unleash the potential of heat pumps”

EHPA Key policy messages                                                                                                                             Meeting EU’s climate and energy goals entails the decarbonisation of the heating sector. The latter requires a full decarbonisation of the building sector by 2050. According to several studies, this can only be achieved in time by exploiting the full potential of heat pumps, the most efficient and renewable technologies.

Due to the “lock-in” effect of investment in thermal appliances, heat pumps need to be given strong political recognition as of today. This means:

• Heat pumps need to be openly supported by policy makers to reassure consumers and investors. Best available technologies must be promoted in EU and national policies, on  the basis of a consumer-friendly energy label (that has no empty ‘A’ class and compares functionally-equivalent products);

• Heat pumps need a stimulating climate-friendly regulatory framework, such as strong building requirements, policies to foster the renovation sector, defined phase-down objectives for fossil fuel boilers, and a forward-looking primary energy factor;

• Heat pumps play a key role in system integration and should be valued and promoted. They offer huge flexibility potential through demand-response and thermal storage.

Strengthened portfolio expands GT Phelan offering

Derek Phelan, Sales & Marketing Director with Kevin Phelan, Operations & Service Director, and Rodney Phelan, Managing Director.

Derek Phelan, Sales & Marketing Director with Kevin Phelan, Operations & Service Director, and
Rodney Phelan, Managing Director.

Already synonymous with Toshiba throughout Ireland for just on 35 years, the addition of Samsung in January of this year makes for a far stronger and more diverse, product offering. Both Toshiba and Samsung are recognised market-leading brands and they sit very comfortably as complementary entities within the GT Phelan portfolio.

Indeed, GT Phelan is a renowned brand in itself, serving the industry’s needs in Ireland since 1981. Founder Gerry Phelan was instrumental in establishing and spearheading the company’s early growth and his sons – Kevin, Derek and Rodney – have been very much an integral part of its expansion and development since taking the reins.

All are directors of the company and GT Phelan is every bit a service provider as it is a product supplier. Its objective is to clearly identify the clients requirement, and then to help the consultant and dealer devise the most energy-efficient solution that offers value for money and trouble-free operation.

GT Phelan is one of a handful of independent building services companies in Ireland who pioneered the introduction of air conditioning to Ireland back in the early 1980s. Since then it has played a major role in developing and shaping what was originally an insignificant market segment into the multi-million euro business it represents today.

As product innovations and technological developments were introduced, GT Phelan not only embraced them but championed their adoption by the industry at large. While conscious of its longevity and history, the emphasis has always been on satisfying current market requirements while, at the same time, looking to future solutions.

In essence, GT Phelan brings all the benefits and massive resources of Toshiba and Samsung to bear when using its own considerable experience and expertise to devise tailor-made solutions for the conditions which prevail in Ireland.

Contact: Derek Phelan, GT Phelan. Tel: 01 – 286 4377; info@gtphelan.ie; www.gtphelan.ie

Welcome new approach to heat pumps in DEAP

HPA SQUARE logoIn a move that has been wholeheartedly welcomed by the sector, SEAI has updated the methodology for heat pumps in the Dwelling Energy Assessment Procedure (DEAP).

The approach to heat pumps now applicable in DEAP is based on mandatory performance requirements for heat pumps across Europe under the Ecodesign (2009/125/EC) and Labelling (2010/30/EU) European directives.

This update uses test data to standards IS EN 14825-2013 for space heating and IS EN 16147- 2011 for water heating and derives seasonal performance data for entry in DEAP based on IS EN 15316-4-2-2008.

These directives are a legal requirement for heat pumps placed on the market from 26th September 2015. Where heat pumps are not required to comply with and do not comply with those directives, then the methodology uses the current approach in DEAP V3.2.

Lawlor appointed Toshiba Sales Manager for Ireland

Ken Lawlor, Toshiba Sales Manager for Ireland

Ken Lawlor, Toshiba Sales Manager for Ireland

Toshiba has appointed Ken Lawlor as Sales Manager for Ireland to spearhead further market penetration and growth of the brand. With a brief to develop both the distribution and direct sales channel, Ken will work closely with long-established Toshiba distributor GT Phelan.

Ken Lawlor said: “Due to the excellent work of our distributors over many years, Toshiba has a fantastic reputation in Ireland as a high-quality brand with a combination of industry-leading efficiency, reliability and technical excellence. We will be working closely with GT Phelan over the coming months and years to build on this and realise the potential.”

The company is targeting growth in Ireland across its range of class-leading split systems, high performance VRF air conditioning and air-to-air and air-to-water heat pumps.

David Dunn, General Manager of Toshiba Air Conditioning, said: “Ireland is important to us, and we are investing significantly to develop our presence and to support our growing customer base. This means increasing our support for the distributor channel as well as developing a component of direct sales, as we have done successfully for many years in the UK. Visit their website to see how salesforce saves you time and resources so that you can concentrate on running your business.

“We are proud of the heritage and brand strength Toshiba has in Ireland as a result of the outstanding work by GT Phelan over many years. We look forward to building on our successful partnership, and working to maximise the opportunities presented for the benefit of all concerned.”

Heat pumps poised for lift off!

Richard Sherlock, Chairman, Heat Pump Association

Richard Sherlock, Chairman, Heat Pump Association

The HPA is now very often the first port of call for these bodies when seeking information on the sector, be it market size, technical data, energy performance criteria, etc. Current Chairman is Richard Sherlock, Field Sales Manager for the Air-conditioning and Heating Divisions, Mitsubishi Electric. Here Richard gives a brief resume of progress and developments over the years, and highlights some of the challenges facing the sector as it looks to the future.

Brands represented by the current membership include Danfoss, Hitachi, Daikin, Mitsubishi Electric,  Waterfurnace, Thermia, Panasonic, Toshiba, Alpha Innotec/Origen, Baxi Potterton Myson, Nibe, CTC Enertec, Joule/ Samsung and Stiebel Eltron.

Membership is growing at a rapid rate, perhaps not surprisingly as the market is poised for dramatic expansion. Latest HPA industry figures show heat pumps sales up over 50% from 2013 to 2014. Estimated sales figures for the first half of 2015 show that pattern continuing.

Heat pumps are an extremely efficient method of heating with primary energy efficiencies unrivalled by any other technology. The current level of  energy credits available on the SEAI energy credit list demonstrates this clearly and, with the recent addition of air to air heat pump credits, the opportunities for heat pumps is set to rise further.

Heat pumps should no longer be viewed as an emerging technology. They are now a very proven technology with volumes of evidence-based data collated from controlled monitoring now available from all the major manufacturers.

This includes both test room and living-environment settings. All demonstrate and confirm the energy reductions that accrue from installing heat pumps, and also the significant related running cost reductions.

The major impediment to development of the heat pump market has been the assumptions made in SEAI’s DEAP software and the penal factor applied to heat pumps for hot water production.

Surveys conducted by HPA have shown that, among HPA members, there is not a single heat pump which has these limitations, demonstrating that the current rules are outdated and in no way reflective of current heat pump products.

Discussions regarding some elements of the software in relation to heat pumps are at an advanced stage. SEAI recently invited comments on a set of proposals and, with this public consultation process now completed, the industry awaits the outcome of these deliberations. This is expected shortly.

Another very important issue is the imminent implementation of the section of the Erp Directive dealing with heat generators. Lot 10 of the Directive dealing with air conditioners with a cooling capacity of <12KW was implemented as far back as 2013. The next major change is the enactment of LOT 1 for heat generators, which includes heat pumps. This is scheduled to be take effect on 26 September next.

The Erp Directive (2009/125/EC: Eco Design) will change the heating sector and introduce new energy efficiency standards for heating technology. The Directive aims to improve the energy efficiency of products and systems and was put in place to help the EU achieve its 20-20-20 targets

Unified HPA approach                                                                                                                               Individually, HPA members have already taken the necessary steps to ensure compliance but a HPA sub-committee is currently devising a unified HPA approach to deal with the implications of ErP as it is rolled out over the coming months.

One of the goals of LOT 1 is for individuals to be able to compare technologies such as heat pumps and other heat generators on a single label so they can make an informed purchasing decision. This will not only help end-users, but also specifying consultants and heating installers.

LOT 1 is split into two basic capacity/output ranges – up to 70kW and those ranging from 70kW to 400kW. Installers will be required to fill out a “Fiche” document which will provide an energy efficiency figure for the heating system, encompassing generator, ancillaries, controls etc.

For heat pumps manufacturers one of the main market concerns is in relation to rating in the DEAP software. Industry should not confuse the requirements under ErP and EPBD … they are two different things. Essentially, having labels published for ErP has no impact in DEAP as the current methodology does not accommodate ErP labels or testing.

In fact, there is no requirement for Irish authorities to accommodate ErP in software derived from EPBD. Both Directives are independent and links between them are not defined, particularly for use in DEAP methodologies in member states.

While the foregoing points to some very obvious and serious challenges facing the development of the heat pump market in Ireland, the facts of the matter cannot be disputed. Despite some serious and unfair impediments, heat pump sales have still shown a 50% increase over the years 2013 to 2014. Once these impediments have been resolved and heat pumps given a level playing field in respect of comparisons with other heat generators, the market will continue to develop, but at an everaccelerating rate.