go to top scroll for more

Projects: Projects for Investigator
Reference Number	NIA_WWU_2_12
Title	EUSE - Ventilation Within Buildings
Status	Completed
Energy Categories	Hydrogen and Fuel Cells(Hydrogen, Other infrastructure and systems R&D) 80%; Other Cross-Cutting Technologies or Research(Environmental, social and economic impacts) 20%;
Research Types	Applied Research and Development 100%
Science and Technology Fields	PHYSICAL SCIENCES AND MATHEMATICS (Computer Science and Informatics) 20%; ENGINEERING AND TECHNOLOGY (Civil Engineering) 30%; ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering) 50%;
UKERC Cross Cutting Characterisation	Sociological economical and environmental impact of energy 100%
Principal Investigator	Project Contact No email address given Wales and West Utilities
Award Type	Network Innovation Allowance
Funding Source	Ofgem
Start Date	01 November 2022
End Date	30 June 2023
Duration	ENA months
Total Grant Value	£213,333
Industrial Sectors	Energy
Region	Wales
Programme	Network Innovation Allowance
Investigators	Principal Investigator	Project Contact , Wales and West Utilities (100.000%)
	Industrial Collaborator	Project Contact , Wales and West Utilities (0.000%)
Web Site	https://smarter.energynetworks.org/projects/NIA_WWU_2_12
Objectives	"There is a need to understand the implications associated with the conversion to hydrogen and effectiveness of existing ventilation in the home, so a literature review of the current ventilation requirements will be required to understand any ongoing or completed project work being undertaken on ventilation requirements associated with hydrogen. Whole building ventilation interaction, extensive scenario modelling as well as the effects of mechanical ventilation will need to be completed to understand how a whole building performs, e.g., the interaction of ventilation between rooms/storeys/cupboards. A baseline for natural gas will be modelled followed by development of a hydrogen model in order to compare differing ventilation scenarios. KIWA will provide evidence and learnings in the following areas: 1. Review of existing work and requirements: Review of work undertaken across several projects (e.g. Hy4Heat and HyHouse) to understand the work that has been done to on the effects of ventilation, changes in ventilation requirements for hydrogen as opposed to natural gas and minimum required ventilation. 2. Whole building ventilation interaction modelling: How the whole building performs, e.g., the interaction of ventilation between rooms/storeys/cupboards and leakage paths by elevation, dispersion and the potential for diffusive loss. 3. Mechanical ventilation: As a common form of ventilation, so its presence will be included and effects understood. 4. Minimum ventilation requirements: 10,000mm2 additional ventilation has been suggested as an output of Hy4Heat. Further work is needed to be undertaken to determine if this is suitable across different circumstances and room types in addition to any minimum ventilation requirements Measurement and data quality statement: We will achieve by creating and applying a Quality Assurance (QA) plan including a QA log. These will be based on templates from the Department for Business, Energy & Industrial Strategy (BEIS) (for whom we are undertaking similar activities) and our experience of producing high quality research reports for clients. The key aspects that will be quality assured are: 1. Literature review execution where the methodology will be defined to ensure that the quality and reliability of the sources is assessed correctly so that appropriate emphasis can be placed on the information that they yield. Checks will be made to ensure that it is consistently applied. 2. Literature review output where the output will be checked to ensure that the questions are answered, that where possible evidence gaps have been filled and if not have been defined such as to inform the modelling activities. A formal record of each source reviewed and the findings with regards to its value and reliability will be made. This will be reflected in the reporting of the project. 3. Models and modelling outputs for basic modelling (using a two-vent model) to be undertaken regarding the implications for building ventilation. Although, these models will be relatively simple it will still be necessary to ensure that they are of a good quality. The general principles of the BEIS QA Guidance for Models will be applied. Particular focus will be on the calculations applied and the input data. Reports will be subject to a formal Technical Quality Review to ensure their quality prior to release. Reports will be assessed against quality criteria which will include: 1. Accuracy (including correct reporting of modelling results) 2. Clarity (including spelling, grammar) 3. Graphics (including correct communication of information) 4. Appropriate referencing (mainly for the sources identified in the desk study and literature review), 5. Data and calculations, 6. Timeliness of delivery, 7. Stakeholder engagement. The project is rated low in the common assessment framework detailed in the ENIP document after assessing the total project value, the progression through the TRL levels, the number of project delivery partners and the high level of data assumptions. No additional peer review is required for this project. " "Review of existing work: Review of existing legislation such as BS 5925:1991 Code of practice for Ventilation principles and designing for natural ventilation. As well as a review of work that has been undertaken in other projects.Modelling: The project will construct a two vent model of buoyancy and wind driven ventilation of dispersion of hydrogen in Excel or Python. This assumes that the leakage is represented by a low level and a high level vent above and below the neutral buoyancy plane. In principle this treats the situation as having only one of each vent type, however more than two vents may be used in practice. Accounting for mechanical ventilation: Mechanical ventilation changes the pressure drop across one or more vents from an enclosed space. This will affect the flows of gases and the local and overall dispersion rates. There are three general types of mechanical ventilation; Positive input ventilation (PIV), Mechanical extract ventilation (MEV) and Balanced whole house ventilation. Adjustment to minimum ventilation requirements: All pipework for 2nd and 3rd family gases, installed in buildings, including in voids should conform to BS6891. This standard doesnt apply for 1st family gases, the closest to hydrogen of the existing gas families. Currently work is underway to develop the standards and guidance for installation of systems for carrying gas which is mainly hydrogen. Learnings from this work will be applied to this project. Final Report: All of the above will be compiled into a formal report, with an exec summary. There is a lot of ongoing work to identify the most effective route to meet net zero in the UK and this project is one of many projects to evidence the major or minor role hydrogen will have in different scenarios. Repurposing the UK gas networks with hydrogen to support the challenge of the climate change act has the potential to save £millions with minimal gas customer disruption verses alternative decarbonisation solutions" To investigate if the conversion from natural gas to hydrogen creates new issues with regards to the existing ventilation within properties
Abstract	There is a need to understand the implications associated with the conversion to hydrogen and effectiveness of existing ventilation in the home, so a literature review of the current ventilation requirements will be required to understand any ongoing or completed project work being undertaken on ventilation requirements associated with hydrogen. Whole building ventilation interaction, extensive scenario modelling as well as the effects of mechanical ventilation will need to be completed to understand how a whole building performs, e.g., the interaction of ventilation between rooms/storeys/cupboards.
Publications	(none)
Final Report	(none)
Added to Database	01/11/23