Domestic applications of gas

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1 gasnetworks.ie Domestic appications of gas Advantages of natura gas versus other types of energy

2 2 Natura gas: The cimate-friendy aternative

3 3 Why natura gas? Natura gas is the most environmentay friendy fossi fue avaiabe. Our continued need for energy and the heightened awareness of our environmenta responsibiities has undoubtedy eevated the vaue of natura gas in our ives. The use of natura gas instead of more pouting fues has resuted in consideraby ower emissions of cimate changing greenhouse gases. In addition, natura gas offers customers a wide range of benefits. Convenience You wi never run out of fue Environmenta benefits Lowest C0 2 emissions of a fossi fues Financia benefits Up to 70% cheaper than eectricity

4 Soutions to suit your ifestye Natura gas products offer benefits for both new and existing dweings 4 Natura gas appiances in your home Gas cooker/hob Page 13 Living Room Gas boier Page 12 Kitchen Gas fire Page 11 Gas tumbe dryer Page 12 Utiity Ha Sitting Room Gas fired heat pump Page 8

Natura gas Providing comfort in an energy efficient way 5 0.5 0.45 0.4 57% ess emissions from natura gas 0.35 0.3 Kiograms CO2 per 0.25 kw/h 0.2 0.15 0.1 0.05 0 0.

205kg/ CO2 Eectricty emission factor Natura gas emission factor per kwh per kwh Graph: Comparison of energy emission factors Natura gas fired stove Awareness of the

The interest in natura gas as an energy source no onger reates ony to its major financia benefits compared to other fue types but aso to the ong term gain for the

5 Natura gas Providing comfort in an energy efficient way % ess emissions from natura gas Kiograms CO2 per 0.25 kw/h kg/ CO kg/ CO2 Eectricty emission factor Natura gas emission factor per kwh per kwh Graph: Comparison of energy emission factors Natura gas fired stove Awareness of the effect that greenhouse gases can have has grown in recent times. The interest in natura gas as an energy source no onger reates ony to its major financia benefits compared to other fue types but aso to the ong term gain for the environment. An emissions factor is a vaue that attempts to reate the quantity of a poutant reeased to the atmosphere because of the type of energy that has been used. When comparing emission factors of fue types eectricity has a vaue of kiograms of CO2 reeased per kiowatt of operation and natura gas has a vaue of kiograms of CO2 reeased per kiowatt hour of operation.* *According to most recent SEAI figures.

6 Biomethane Greening the Grid Biomethane is a cean, renewabe and carbon neutra fue and is the future of renewabe gas in Ireand. 6

7 7 Biomethane is a renewabe gas produced from biodegradabe matter such as food waste, sewage or energy crops. Gas Networks Ireand recognises biomethane as a renewabe fue which can significanty improve the sustainabiity of the natura gas network and reduce dependency on imported natura gas. We are committed to our environments future by Greening the Grid. Its potentia as a renewabe fue for heat, eectricity and transport is we-recognised in response to the EU s commitment to becoming a highy energy-efficient, ow carbon economy. Renewabe energy vision: By 2030 we pan to suppy 20% of Ireand s natura gas needs with biomethane

Gas fired heat pump technoogy Gas is the soution for your

K18 gas fired heat pump by Robur is compiant with the

water output of 70C O as it fits in with high temperature

Thanks to environmenta energy, heating costs are reduced by

8 Gas fired heat pump technoogy Gas is the soution for your home RENEWABLE ENERGY 40% HEATING 8 DOMESTIC HOT WATER The K18 gas fired heat pump by Robur is compiant with the future reguations in terms of energy efficiency, use of energy and renewabe energy use. It is suitabe for both new and existing buidings with hot water output of 70C O as it fits in with high temperature and ow temperature heating systems. Thanks to environmenta energy, heating costs are reduced by haf It s the easy aternative for your residentia heating system 40% quieter than the average eectrica heat pump on the market

savings on switching from LPG buk (41%** with best quote) is piped directy to premises is aways avaiabe and never has to be stored or ordered cannot be stoen remains competitivey priced compared to

9 Benefits of natura gas 9 Financia benefits Natura gas... Changing to natura gas can generate savings of up to: 67%* savings on switching from eectricity (72%** with best quote) 60%* savings on switching from LPG cyinders (67%** with best quote) 28%* savings on switching from LPG buk (41%** with best quote) is piped directy to premises is aways avaiabe and never has to be stored or ordered cannot be stoen remains competitivey priced compared to other fues has compact, unobtrusive and efficient boiers has appiances that come with many fueing options that are aso cean and quiet running is versatie with many uses such as cooking, heating and tumbe drying cannot be beaten for speed and controabiity with instant hot water has a key contribution to make as a cean and efficient bridge to a sustainabe future Source SEAI 2016 *Vaues cacuated using an average energy consumption **Savings that can be made with best quotes from suppiers in the market

In comparison to other fue types natura gas produces the owest amount of CO 2 emissions 10 Avaiabiity Natura gas ensures a constant suppy of energy, 24 hours a day 365 days a year.

10 In comparison to other fue types natura gas produces the owest amount of CO 2 emissions 10 Avaiabiity Natura gas ensures a constant suppy of energy, 24 hours a day 365 days a year. There is no need for storage faciities and there is no need to order, pre-pay or arrange deivery of your fue. Storage Unike some fues ike oi, LPG or soid fue (turf, wood and coa), natura gas does not require the customer to provide space to store the fue. This coud prove to be unsighty or may have safety or insurance impications. It aso frees up vauabe garden space. Environment A fossi fues when ignited wi cause emissions to the atmosphere and a of these fues wi emit CO 2. However in comparison to other fossi fues natura gas produces the owest amount of CO 2 emissions. An average house has a yeary energy consumption of 13,800 kwh for heating and hot water use. For exampe a house switching from eectricity to natura gas woud save 3,698 kiograms of CO 2 per year which is the equivaent to taking one car off the road. A house switching from using oi to natura gas woud save 897 kiograms of CO 2 per year which woud be the equivaent to those absorbed by around 150 trees. Meeting the Buiding Reguation requirements of Part L In ine with Part L requirements by using a combination of natura gas and other compimenting technoogies it is possibe to achieve an A rated homes without increasing the fabric cost of the buiding. Part L requires 10 kwh of therma energy (per square metre foor area) to be generated from renewabe sources for use in the buiding s heating or hot water system. Aternativey 4kWh of eectrica energy can be generated or a mix of the two.

Variety of highy efficient appications for domestic users of gas Gas fires and fue types Modern gas fires can be custom made or room seaed, with

Unike soid fue fires, gas fires can be operated by remote contro or by a simpe side contro action.

The remote contros can be programmabe ensuring that whenever you return home your house wi be warm.

10 0 % Soid fue open fire 37% 84% 89% Wood burning and muti-fue Highy efficient natura gas fire Graph: Fire types efficiency (max efficiency)

11 Variety of highy efficient appications for domestic users of gas Gas fires and fue types Modern gas fires can be custom made or room seaed, with various fue options. Therefore they do not aways require a traditiona chimney. Unike soid fue fires, gas fires can be operated by remote contro or by a simpe side contro action. This removes the hasse of gathering wood/smokeess coa/peat and means there is no need to have to get the fire started. The remote contros can be programmabe ensuring that whenever you return home your house wi be warm. Efficiencies: Soid fue open fire: 20 37% Wood burning and muti fue: 78 84% Highy efficient natura gas fire: 86 89% % Soid fue open fire 37% 84% 89% Wood burning and muti-fue Highy efficient natura gas fire Graph: Fire types efficiency (max efficiency) Gass fronted natura gas fire 11 Gas fire options Origina open fire Suitabe for conventiona brick buit chimney Highy efficient modern gas fire A types suitabe for conventiona brick buit chimney and for baanced fue. 75% Heat Loss 10% Heat Loss 25% Heat Output 90% Heat Output Origina gas fire efficiency Current gas fire efficiency

Centra heating and hot water High efficiency condensing centra heating boiers can achieve an efficiency of over 90%. Natura gas has compact boiers that fit in discretey with kitchen units.

The cost of heating hot water using natura gas is haf that of an eectric immersion heater.

heating boier Graph: Centra heating system efficiency Emissions: Natura gas condensing boiers produce amost 18-20% ess carbon dioxide emissions than the most efficient oi boier.

Efficiencies: A natura gas dryer can resut in energy savings of over 65% when compared to an eectric dryer.

12 Centra heating and hot water High efficiency condensing centra heating boiers can achieve an efficiency of over 90%. Natura gas has compact boiers that fit in discretey with kitchen units. With a natura gas instaation, hot water is avaiabe at the fick of a switch by using an instantaneous combi-boier or by using a separate hot water cyinder. The cost of heating hot water using natura gas is haf that of an eectric immersion heater. Efficiencies:* Gas fired boier: 55-75% Oi fired boier: 55-75% Condensing boier: 85-97% % 75% 75% 97% Oi boier Natura gas boier Condensing boier Domestic type centra heating boier Graph: Centra heating system efficiency Emissions: Natura gas condensing boiers produce amost 18-20% ess carbon dioxide emissions than the most efficient oi boier. Tumbe dryers According to the Energy Saving Trust (UK) gas tumbe dryers are one of the cheapest and most environmentay friendy types of dryer to run. Efficiencies: A natura gas dryer can resut in energy savings of over 65% when compared to an eectric dryer.* Emissions (kg/co 2 per year) kg/CO 2 per year Gas tumbe dryer 175kg/CO 2 per year Eectric tumbe dryer Graph: Emissions of tumbe dryer types Natura gas tumbe dryer Emissions: Natura gas tumbe dryer: Approximatey 111kg of CO 2 per year. Eectric tumbe dryer: Approximatey 175kg of CO 2 per year. *A efficiency figures are taken from SEAI Figures Emission figures based on an average of 148 uses per year Eectric tumbe dryer with 2.50 kwh per cyce Gas tumbe dryer with 3.66 kwh per cyce

Variety of highy efficient appications for domestic users of gas continued.

The gas hob has directy controabe heat and aows the user to access instant heat at the cick of a button.

typica gas and eectric tariffs. Emissions: Natura gas: Hob - 71kg of CO 2 per year and Oven - 38kg of CO 2 per year approximatey.

* Kiograms CO 2 per year 140 120 100 80 60 40 20 0 HOB 71kg/ CO 2 Natura gas OVEN 38kg/ CO 2 HOB 129kg/ CO 2 Eectric OVEN 91kg/ CO 2 Natura gas cooker/hob Graph:

13 Variety of highy efficient appications for domestic users of gas continued... Cookers/hobs and ovens Gas cookers, hobs and ovens are designed to fit neaty into any kitchen design. The gas hob has directy controabe heat and aows the user to access instant heat at the cick of a button. Efficiencies: Using a gas oven and hob instead of an eectric oven and hob coud mean a reduction in spend on these appiances in over 50%, based on average use with typica gas and eectric tariffs. Emissions: Natura gas: Hob - 71kg of CO 2 per year and Oven - 38kg of CO 2 per year approximatey.* 13 Eectric: Hob - 129kg of CO 2 per year and Oven 91kg of CO 2 per year approximatey.* Kiograms CO 2 per year HOB 71kg/ CO 2 Natura gas OVEN 38kg/ CO 2 HOB 129kg/ CO 2 Eectric OVEN 91kg/ CO 2 Natura gas cooker/hob Graph: Emissions of hob and oven types per year Gas ighting Before eectricity became sufficienty widespread and economica to aow for genera pubic use, gas was the main method of outdoor and indoor ighting. This process of ighting is sti avaiabe and aows the option of adding bespoke architectura soutions. These type of ights can be fitted by a number of methods, fixed to the wa, free standing, by brackets and coumns. *Emission figures based on average of 424 uses for hob and uses for oven. Gas ighting for domestic users

14 Compementary domestic appications for gas Soar therma systems The high efficiency condensing natura gas boier system can be compemented with soar therma coectors.

Fue consumption and carbon emissions can be reduced by combining it with soar water heating. Efficiencies: Soar systems can provide on average 60% of a famiy s annua hot water requirement.

Soar therma system Mechanica ventiation The unit works by removing stae, humid air from the wet rooms such as kitchens, bathrooms and utiity rooms and dumping it outside.

14 14 Compementary domestic appications for gas Soar therma systems The high efficiency condensing natura gas boier system can be compemented with soar therma coectors. This system can be used to meet a of your heating and hot water demands and meet your Part L requirements. The coectors can be roof integrated for aesthetic effect and weather protection. Fue consumption and carbon emissions can be reduced by combining it with soar water heating. Efficiencies: Soar systems can provide on average 60% of a famiy s annua hot water requirement. Emissions: As it is a renewabe energy source a soar therma system has zero emissions. Soar therma system Mechanica ventiation The unit works by removing stae, humid air from the wet rooms such as kitchens, bathrooms and utiity rooms and dumping it outside. Before it is expeed, the heat is extracted from the air and added to a separate stream of fresh outdoor air and this fresh air is then pre heated and suppied to iving rooms and bedrooms. Efficiencies: This unit is cost neutra over four years and can reduce space heating costs by 50%. Mechanica heat recovery ventiation unit* *NuTech Technoogy as shown in Gas Networks Ireand Case Study: A Rated Buidings with Natura Gas.

Product features The unit wi meet Part L compiance without the need for additiona renewabe technoogy such as soar therma or PV. 15 ERP Rating of A++.

by its gas utiization efficiency (G.U.E), which can be up to 1.69. This is the equivaent to a C.O.P of 4.22 on an energy conversion factor of 2.5. Output temperature is controabe.

In comparison to eectric heat pumps which use a forced system, gas fired heat pumps use a natura system which ensures ess servicing is required.

15 Product features The unit wi meet Part L compiance without the need for additiona renewabe technoogy such as soar therma or PV. 15 ERP Rating of A++. The atest innovation that can be used with natura gas Gas fired heat pump avaiabe from January 2016 ErP Rating with the Robur gas fired heat pump The efficiency of a gas fired heat pump is measured by its gas utiization efficiency (G.U.E), which can be up to This is the equivaent to a C.O.P of 4.22 on an energy conversion factor of 2.5. Output temperature is controabe. Can provide fu heating capacity even with ow outside ambient temperatures. As opposed to eectricay driven heat pumps. Gas fired heat pumps make use of the absorption cyce of natura gas. In comparison to eectric heat pumps which use a forced system, gas fired heat pumps use a natura system which ensures ess servicing is required. The Gas fired heat pump is neary sient at 40 decibes which is considered the owest urban ambient sound or the equivaent to the noise in a ibrary. An eectric heat pump operates at a eve of 70 decibes and the 70 range is considered annoyingy oud to some peope, it is the equivaent of being right beside a vacuum ceaner with around 85 decibes the beginning of hearing damage range. Efficiencies: This type of heat pump does not ose its output as much as an eectric heat pump and is 22% cheaper to run compared to an eectric heat pump. Emissions: Near sient at 40db in comparison to an eectric heat pump at 70db. Gas fired heat pump has the owest Nitrous Oxide (NO 2 ) when compared to other types of heat pump.

16 The main contact detais for Gas Networks Ireand are: Genera Enquiries hr Emergency Service gasnetworks.ie 37573/04/2016

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