Absorption chiller
Absorption chillers use heat instead of mechanical energy to provide cooling. Therefore can be coupled with a Cogeneration Unit to provide Trigeneration.
Action Energy
Now known as the Carbon Trust
APX
Amsterdam Power Exchange
BEMS
Building Energy Management Systems
Biogas
Biogas is generated when bacteria degrades biological material in the absence of oxygen, in a process known as anaerobic digestion. Since biogas is a mixture of methane (also known as marsh gas or natural gas) and carbon dioxide it is a renewable fuel produced from waste treatment.
BMS
Building Management Systems
Building Energy Rating
As part of the UK's implementation of the Energy Performance of Buildings Directive (EPBD), a Building Energy Rating certificate, or an Energy Performance Certificate will be required at the point of sale or rental of a building, or on completion of a new building.
Building Management Systems
Controls associated with space heating, air conditioning, hot water service and lighting in buildings.
Building Regulations
The Building Regulations set standards for the design and construction of buildings, primarily to ensure the safety and health for people in or around those buildings, but also for energy conservation and access to and about buildings, but also for energy conservation and access to and about buildings. The regulations apply to most new buildings and many alterations of existing buildings in England and Wales, whether domestic, commercial or industrial.
Calorific value
Amount of heat generated by a given mass of fuel when it is completely burned. It is measured in joules per kilogram.
Carbon Credits
Carbon credits are created when a project reduces or avoids the emission of greenhouse gases, such as carbon dioxide (CO2) and methane (CH4). The carbon credits are measured against a baseline.
Carbon Trading
The UK Emissions Trading Scheme, launched in April 2002, is the world's first economy-wide national-level greenhouse gas trading scheme.
Carbon Trust
The Carbon Trust works with UK business and public sector to cut emissions of carbon dioxide, and reduce climate change. An independent, not-for-profit company set up and funded by the government to help the UK meet its international climate change obligations; the Carbon Trust creates practical solutions to help businesses cut their emissions, bringing both business and environmental benefits.
Catalyst
A catalyst provides a means to further reduce exhaust emissions for NOx and CO.
CCL
See Climate Change Levy
CHP
See Cogeneration
CHPA
The Combined Heat and Power Association works to promote the wider use of combined heat and power and community heating. Clean and efficient Combined Heat and Power (CHP) is already in use on close to 1,400 locations around the UK.
CHPQA
The CHPQA programme is carried out on behalf of the Department for Environment, Food & Rural Affairs. CHPQA provides the means to assess and monitor Good Quality CHP Capacity, for CCL exemption.
Climate Change Levy
The Climate Change Levy is a tax on energy use in industry, commerce, agriculture and the public sector.
CO
Carbon Monoxide
CO2
Carbon Dioxide - odourless gas which is harmful to the environment
CO2 fertilising
Dosing of CO2 gases into a greenhouse to support growth. One attractive mean is to use the cleaned exhaust gases using a selective catalytic reductor from a CHP unit for this.
Cogeneration
Also referred to as Combined Heat and Power and CHP - On site generation of electricity, heat and/or cooling for the public and private sector
Combined Heat and Power
Also referred to as Cogeneration - On site generation of electricity, heat and/or cooling for the public and private sector
DEC
Acronym for Display Energy Certificate
DEP
See Discount Energy Purchase
Discount Energy Purchase
Cogeneration technology supplied, installed and maintained by the ENER·G Group with no capital cost incurred to the client. The energy produced from the unit is then sold at a discounted rate to the client.
Display Energy Certificates
A Display Energy Certificate (DEC) is required for all public buildings and those occupied by public authorities which have a total useful area greater than 1000m² and provide a public servive to a large number of people and therefore frequently visited by those people (e.g. a school, hospital, government or local authority building). Public buildings throughout England and Wales need to display an energy certificate from 1 October 2008 (A different timetable and/or laws apply in Scotland and Northern Ireland).
DNO
District Network Operator
Dual fuel
When a Cogeneration is enabled to operate on two fuels
ECA
See Enhanced Capital Allowances
EEBA
Energy & Environmental Building Association - promotes the awareness, education and development of energy efficient, environmentally responsible buildings and communities.
EIA
Dutch tax energy investment deduction
Electrical efficiency
Electrical output in relation to fuel input
Energy Assessor
An energy assessor undertakes calculations according to a methodology approved by the Secretary of State in order to establish an energy performance rating of a building.
Energy Certificates
Energy Performance Certificates (EPC) and Display Energy Certificates (DEC)
Energy From waste
Energy recovery of post recycling waste residue - an alternative to landfill.
Energy Performance Certificates
An Energy Performance Certificate (EPC) rates both the energy efficiency and environmental impact (C02 emissions) of a property. From 6 April 2008, energy performance certificates were introduced in England and Wales for non-dwellings over 10,000m2 whenever they are built, sold or rented. A lower limit of 2,500m2 was introduced on 1 July, and from 1 October 2008 all properties - homes, commercial and public buildings –when built, sold, or rented, will require an EPC. (A different timetable and/or laws apply in Northern Ireland and Scotland).
Energy Rating
Energy rating assesses the total energy performance of a complete product. Energy ratings are measured in a scale of G to A, the most energy efficient being ‘A’.
Energy Services Performance Contracting
Reductions in utility consumption associated with the provision and operation of various energy efficient technologies provided with no capital cost to the customer
Energy Technology List
Only investment in products approved for the Energy Technology List can qualify for an ECA claim. Those organisations who are not eligible to make ECA claims can still benefit from ongoing energy savings by using the Energy Technology List as a procurement tool.
Enhanced Capital Allowances
Capital allowances on plant and machinery are generally given at 25% a year on a reducing balance basis. However, with ECAs, businesses can write off 100% of the cost of energy saving equipment against their taxable profits within the first year of investment. Businesses claim the allowance on their income tax or corporation tax returns.
EPBD (Energy Performance of Building Directive)
Energy Performance of Building Directive - The EPB Directive 2002/91/EC was originally introduced in 2000 and following various revisions the current draft was formally adopted by the Council of Ministers on 16 December 2002 and published in the Official Journal on 4th January 2003. It is expected to result in savings of 45 million tonnes of CO2 by 2010.
EPC
Acronym for Energy Performance Certificate
ESPC
See Energy Services Performance Contracting
Feasibility Studies
Carried out free of charge by the ENER·G Group to determine the viability of our technologies in a particular application
Fossil Fuels
Coal, Oil and Gas are called "fossil fuels" because they have been formed from the fossilised remains of prehistoric plants and animals. They provide around 66% of the world's electrical power, and 95% of the world's total energy demands (including heating, transport, electricity generation and other uses).
G59
Recommendations for the connection of embedded generating plant to the DNO's distribution systems and the provision of standby generators
Global warming
A rise in global temperatures threatening wildlife and its habitat, often attributed to the burning of fossil fuels
GPRS
The General Packet Radio Service (GPRS) is a new nonvoice value added service that allows information to be sent and received across a mobile telephone network. GPRS has several unique features which can be summarized as: Speed, Immediacy, Better Applications, Service Access
GSM
Global System for Mobile communications, the second generation digital technology originally developed for Europe but which now has in excess of 71 per cent of the world market. Initially developed for operation in the 900MHz band and subsequently modified for the 850, 1800 and 1900MHz bands. GSM originally stood for Groupe Speciale Mobile, the CEPT committee which began the GSM standardisation process
GWh
Giga Watt Hour
Heat Rate
Energy input per unit of time, usually expressed in kWh\h or BTU\h
HTHW
High Temperature Hot Water
HVAC
Heating, Ventilation and Air-conditioning
Island mode / Standby Cogeneration
Ability of the Cogeneration unit to operate independently from the grid
ISO14001
ISO 14000 is a series of international standards on environmental management. It provides a framework for the development of an environmental management system and the supporting audit programme. The main thrust for its development came as a result of the Rio Summit on the Environment held in 1992.
kWh
Kilo Watt Hour
Kyoto Accord
Agreed in Japan 1997 targets 'carbon-rich' gases and commits 38 industrialised countries to emissions cut of 5.2% by 2010
Lean burn
Lean-burn is the ability to ignite air and fuel mixtures that contain higher amounts of air than normally used.
LECs (UK)
See Levy Exemption Certificates
Levy Exemption Certificates (UK)
Organisations that pay the CCL can enter into agreements with suppliers to purchase renewable electricity. The Levy Exemption Certificates (LECs) are evidence of CCL exempt electricity supply generated from qualifying renewable sources. LECs will be redeemed by suppliers to HM Customs and Excise to demonstrate the amount of non-climate change electricity able to be levied that had been supplied to non-domestic customers in the given period.
LPHW
Low Pressure Hot Water
LTHW
Low Temperature Hot Water
MEP
Dutch subsidy on electricity generated
Motor management system
Monitoring and control system for gas engine enabling safe and efficient operation
MTHW
Medium Temperature Hot Water
MWh
Mega Watt Hour
Netcaretaker
Part of our Building Energy Management System (BEMS), NETcaretaker automatically looks after your site. It constantly monitors system performance and records any changes made to the BEMS. Using the power of the Internet, NETcaretaker sends e-mailed reports twice daily and immediately on parameter change to our dedicated support centre where these are decoded and handled by NETmail and our team of energy consultants.
Netmail
NETmail automatically decodes e-mail messages from our NETcaretaker equipped sites. Messages contain archive data which is automatically stored and exception reporting that requires immediate action. NETmail automatically flags key issues to both operators and customers and in some instances takes automated corrective action. In addition NETmail will also calculate the energy impact of parameter changes such as temperature setpoints and plant operating hours.
NOx
Nitrogen oxides (NOx) act as indirect greenhouse gases by producing the tropospheric greenhouse gas 'ozone' during their breakdown in the atmosphere.
OPTIMA (Dutch DEP)
Discount Energy Purchase operated by ENER·G NEDALO
Parallel grid mode
This is where the Cogeneration unit runs in parallel with the grid
Part L
Part L of the UK Building Regulations deals with the conservation of fuel and power in buildings throughout the UK. It is part of a broad wave of European legislation which seeks to encourage industry-wide adoption of energy efficient practices and waste minimisation techniques. This legislation is only in its infancy; however it is already having a significant impact on the local building industry
Peak shaving
Can mean limiting demand to a predetermined level / or eliminating demand charges altogether.
PFI
Private Finance Initiative
PPP
Public Private Partnership
Property Energy Rating/Premise Energy Rating
The Property energy rating or Premise energy rating is calculated from the EPC. This will indicate how energy efficient the building is.
REB
Dutch tax on gas and electricity, exemption for CHP
REC's
Regional Electricity Companies
Renewable Obligation Certificates
Renewable Obligation Certificates or ROCs for short is the name given to the digital certificates which holds details of exactly how a unit of electricity was made, by whom and finally who bought and used it. These ROCs are traded separately to the actual electricity itself and work as a bonus premium on top of the price paid for the unit.
Renewables Obligation (UK)
The new Renewables Obligation and associated Renewables (Scotland) Obligation came into force in April 2002 as part of the Utilities Act (2000). It requires power suppliers to derive from renewables a specified proportion of the electricity they supply to their customers. This starts at 3% in 2003, rising gradually to 10% by 2010. The cost to consumers will be limited by a price cap and the obligation is guaranteed in law until 2027.
RMS3
Third Generation Remote Monitoring System to control and monitor Cogeneration / CHP application
ROCs (UK)
See Renewable Obligation Certificates
Sound pressure level (dB(A))
A-weighted sound pressure level at a certain distance from the source
Spark Spread
The difference between electricity price and gas price - can affect the viability of the cogeneration system.
Standard reference conditions
Standard conditions for ambient air, ambient air pressure, relative humidity, cooling water temperature referred to when defining engine output, fuel consumption etc.
Thermal efficiency
Quantity of heat produced in relation to fuel input
Total efficiency
Sum of the electrical and thermal efficiency in relation to the fuel consumed
Trigeneration
The absorption chilling unit would use waste heat available from the CHP system in the summer months to provide chilled water. The distributive mains will deliver this and also connect together several new and existing chilled water systems providing improved efficiency in operation resulting in significant electricity savings.
UK Emissions trading Scheme
Based on the international Kyoto Summit on Climate Change agreement, this describes the U.Ks National Emissions Trading scheme designed to reduce a range of greenhouse gases, 80% of which is carbon dioxide.
Unbalance market
Difference between electricity production and demand.
VuSite
VuSite is a graphical management tool used as part of our Building Energy Management Systems (BEMS). The tool typically displays a site plan upon which real time operating temperatures are shown and allows the user to make adjustment of time setting and temperature setpoints. In addition temperature records can be viewed, normally in the form of a simple graph.