{"id":27498,"date":"2016-09-30T08:40:51","date_gmt":"2016-09-30T08:40:51","guid":{"rendered":"https:\/\/www.pbctoday.co.uk\/news\/?p=25976"},"modified":"2016-10-12T10:23:02","modified_gmt":"2016-10-12T10:23:02","slug":"efficiency-ground-source-heat-pump","status":"publish","type":"post","link":"https:\/\/www.pbctoday.co.uk\/news\/energy-news\/efficiency-ground-source-heat-pump\/27498\/","title":{"rendered":"Efficiency of the ground source heat pump"},"content":{"rendered":"<h2>A ground source heat pump (GSHP) scheme can provide the most efficient means to obtain renewable heating and cooling as explained by John Findlay, Director of Carbon Zero Consulting Ltd and Chair of GSHPA<\/h2>\n<p>The UK\u2019s first \u2018modern\u2019 closed-loop borehole ground source heat pump (GSHP) installation has recently turned 20 years of age with heat pump and boreholes still going strong. Many systems outside of the UK are much older than this.<\/p>\n<p>The major \u2018fuel\u2019 source for a GSHP is, of course, the ground. A well-designed and maintained borehole or trenched ground array will provide continuous operation for 100 years or more \u2013 provided nobody digs it up! As such, the ground array acts as a very long term capital asset for the system owner.<\/p>\n<p>A low-temperature GSHP scheme provides the most efficient means to obtain renewable heating and cooling. Over three units of heat (or cool) is provided for every unit of input electrical energy. Over the course of a year, this factor of GSHP efficiency is termed the \u2018seasonal performance factor\u2019 (SPF). A system providing a building over the course of a year with a balance of heat and cool will have a SPF of 5 or often much more. Combustion systems such as biomass or gas, of course, cannot exceed an SPF of 1.<\/p>\n<p>The UK\u2019s long-term aim for the provision of renewable heating is to <a href=\"https:\/\/www.pbctoday.co.uk\/news\/energy\/imagining-district-systems-future\/25870\/\">utilise heat pumps powered by low (and ultimately zero) carbon electricity<\/a>. Great strides have already been taken to reduce the \u2018carbon intensity\u2019 of mains power \u2013 and so heat pumps provide a source of efficient renewable heat (and cool) with ever-decreasing CO2 emissions.<\/p>\n<p>Great flexibility of <a href=\"https:\/\/www.pbctoday.co.uk\/news\/bim\/ground-beneath-cities-opportunity-urban-design\/23735\/\">design of the ground array is possible<\/a>, with constraints on array design including site location, layout, underlying soil and rock characteristics and proximity to water. Renewable heat can be sustainably extracted from deep \u2018closed-loop\u2019 boreholes, shallow trenches, water supply boreholes, rivers, lakes and the sea. A GSHP system is the only technology that can store heat or cool within the ground for use at another time. This can provide a huge boost to system efficiency.<\/p>\n<p>Ground arrays can provide heating and cooling to a single building, or alternatively, some buildings can be supplied by a common ground array. GSHP systems also offer an excellent means to provide district heating. For example, a \u2018source-side\u2019 system linked to heat pumps in each building on the heating circuit offers the most efficient means to obtain renewable heating.<\/p>\n<p>A GSHP can be designed to provide heat from as little as a 3kW domestic application up to multi-megawatt projects for hospitals, schools, colleges and large retail facilities. Many examples of all scales are operating efficiently in the UK today.<\/p>\n<p>The number of projects considering GSHP technology is rising due in part to degression of biomass tariffs with RHI income from GSHP systems now significantly higher than the equivalent biomass system \u2013 at all scales.<\/p>\n<p>The Ground Source Heat Pump Association (GSHPA) supports the growth and development of the GSHP industry in the United Kingdom by:<\/p>\n<p>\u2022 Promoting the efficient and sustainable use of ground source heat pumps;<\/p>\n<p>\u2022 Raising awareness of the benefits of ground source heat pumps;<\/p>\n<p>\u2022 Developing ground source installation standards;<\/p>\n<p>\u2022 Encouraging high standards of training for the industry;<\/p>\n<p>\u2022 Providing a forum for information interchange;<\/p>\n<p>\u2022 Lobbying on matters of local, national and international interest to members.<\/p>\n<p>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<\/p>\n<p><strong>John Findlay<\/strong><\/p>\n<p>Director of Carbon Zero Consulting Ltd and Chair<\/p>\n<p>of Ground Source Heat Pump Association (GSHPA)<\/p>\n<p>Ground Source Heat Pump Association<\/p>\n<p>Tel: 01824 750 165<\/p>\n<p><a href=\"mailto:info@gshp.org.uk\">info@gshp.org.uk<\/a><\/p>\n<p><a href=\"http:\/\/www.gshp.org.uk\">www.gshp.org.uk<\/a><\/p>\n<p><a href=\"http:\/\/www.twitter.com\/GSHPAssociation\">Twitter @GSHPAssociation<\/a><\/p>\n<div class=\"mk-custom-module-container\">\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A ground source heat pump (GSHP) scheme can provide the most efficient means to obtain renewable heating and cooling as explained by John Findlay, Director of Carbon Zero Consulting Ltd and Chair of GSHPA.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[307],"tags":[430,565],"stakeholder_rel_tag":[],"contributor_rel_tag":[],"class_list":{"0":"post-27498","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-energy-news","7":"tag-energy-efficiency","8":"tag-pbc-today-october-2016"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v26.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Efficiency of the ground source heat pump | Planning, Building &amp; 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