The platform for open and practice-oriented research

product

Family Dairy Tech, India

This advisory report describes the results and recommendations for Indian dairy farmers and Dutch and Indian companies, from the RAAK Family Dairy Tech India project. Researchers and students of two Dutch and one Indian University of Applied Sciences, together with ten Dutch companies, Indian companies and eight innovative farmers in Pune district collaborated to develop robust and affordable technologies and knowledge for Indian medium sized dairy farmers, in Pune district, Maharashtra. The report also describes innovations in the farmers’ business models and value chains.

MULTIFILE

product

2nd European SimStadt Workshop at Saxion University of Applied Sciences in Enschede (NL)

On the 11th of March, just a few days aheadof COVID – 19, the team working on the ELISEUse Case “Comparative analysis of differentmethodologies and datasets for EnergyPerformance Labelling of buildings” organizedthe 2nd European SimStadt workshop atSaxion University of Applied Sciences inEnschede, hosted by the Saxion researchgroup Sustainable Building Technology (SBT).SimStadt is a workflow-driven urban energysimulation platform for CityGML city modelsenabling solar potential- , heating demand- ,environmental- and district heating networkanalysis. Linking urban simulation platformsto CityGML models allows the use ofgeospatial information to enrich data modelsto be used for scenario analysis, e.g. relatedto energy transition. However, the rapid andwidespread development of applications andtools requires the European Commission tofocus on harmonization measures for dataformats.

MULTIFILE

2nd European SimStadt Workshop at Saxion University of Applied Sciences in Enschede (NL)

product

The Benefits of Positive Energy Districts

Positive Energy Districts (PEDs) are a promising approach to urban energy transformation, aiming to optimize local energy systems and deliver environmental, social and economic benefits. However, their effectiveness and justification for investment rely on understanding the additional value they provide (additionality) in comparison to current policies and planning methods. The additionality perspective is not used yet in current evaluations of PED demonstrations and pilots. Therefore, this paper introduces the concept of additionality in the evaluation of PEDs, focusing on the additional benefits they bring and the circumstances under which they are most effective. We discuss the additionality of PEDs in addressing the challenges of climate neutrality and energy system transformation in three European cities that are funded by the European Commission’s H2020 Programme. It should be noted that given the ongoing status of these projects, the assessment is mainly based on preliminary results, as monitoring is still ongoing and quantitative results are not yet available. The paper discusses the drivers and barriers specific to PEDs, and highlights the challenges posed by technical complexities, financing aspects and social and legal restrictions. Conclusions are drawn regarding the concept of additionality and its implications for the wider development of PEDs as a response to the challenges of climate neutrality and energy system transformation in cities. We conclude that the additionality perspective provides valuable insights into the impact and potential of PEDs for societal goals and recommend this approach for use in the final evaluation of R&I projects involving PEDs using actual monitored data on PEDs.

PDF

The Benefits of Positive Energy Districts

product

Energy matching: exploring the value of demand flexibility in educational office buildings

This research presents a case study exploring the potential for demand side flexibility at a cluster of university buildings. The study investigates the potential of a collection of various electrical devices, excluding heating and cooling systems. With increasing penetration of renewable electricity sources and the phasing out of dispatchable fossil sources, matching grid generation with grid demand will become difficult using traditional grid management methods alone. Additionally, grid congestion is a pressing problem. Demand side management in buildings may contribute to a solution to these problems. Currently demand response is, however, not yet exploited at scale. In part, this is because it is unclear how this flexibility can be translated into successful business models, or whether this is possible under the current market regime. This research gives insight into the potential value of energy demand flexibility in reducing energy costs and increasing the match between electricity demand and purchased renewable electricity. An inventory is made of on-site electrical devices that offer load flexibility and the magnitude and duration of load shifting is estimated for each group of devices. A demand response simulation model is then developed that represents the complete collection of flexible devices. This model, addresses demand response as a ‘distribute candy’ problem and finds the optimal time-of-use for shiftable electricity demand whilst respecting the flexibility constraints of the electrical devices. The value of demand flexibility at the building cluster is then assessed using this simulation model, measured electricity consumption, and data regarding the availability of purchased renewables and day-ahead spot prices. This research concludes that coordinated demand response of large variety of devices at the building cluster level can improve energy matching by 0.6-1.5% and reduce spot market energy cost by 0.4-3.2%.

PDF

Energy matching: exploring the value of demand flexibility in educational office buildings

product

Assessing the performance of Positive Energy Districts: The need for innovative methods

Positive Energy Districts (PEDs) are potential high-impact climate change mitigation actions towards low carbon or even climate neutral cities. This implies that the energy performance and greenhouse gas emissions of PEDs need to be assessed. To this end, an accounting methodology, metrics, supporting (accounting) tools, and reporting are necessary that capture the full energy and climate impact of PEDs. The European Commission's Building Energy Specification Table (BEST) provides a methodological approach for calculating the energy balance of PEDs. The BEST is a formal requirement of the European Commission's proposal process, with respect to the Horizon 2020 funding program. An improved methodology for calculating the annual energy balance of a of PED, based on the international standard ISO52000, was developed by the Making City project in 2020. In this paper, we evaluate and compare accounting methods for assessing the energy performance of PEDs and conclude on their use and shortcomings. The hypothesis to be explored is that current accounting practices are based on accounting at a building level and alternative methodologies are needed to capture the full impacts at a district level. To this end, we apply the current approaches on the ATELIER project's PED pilot in Buiksloterham, Amsterdam, which will serve as a case study to illustrate the differences in outcomes and in the use of the results in evaluation and policy making. Consequently, we reflect and recommend on improved approaches and methodologies.

PDF

Assessing the performance of Positive Energy Districts: The need for innovative methods

product

P&ID-based automated fault identification for energy performance diagnosis in HVAC systems:

Current methods for energy diagnosis in heating, ventilation and air conditioning (HVAC) systems are not consistent with process and instrumentation diagrams (P&IDs) as used by engineers to design and operate these systems, leading to very limited application of energy performance diagnosis in practice. In a previous paper, a generic reference architecture – hereafter referred to as the 4S3F (four symptoms and three faults) framework – was developed. Because it is closely related to the way HVAC experts diagnose problems in HVAC installations, 4S3F largely overcomes the problem of limited application. The present article addresses the fault diagnosis process using automated fault identification (AFI) based on symptoms detected with a diagnostic Bayesian network (DBN). It demonstrates that possible faults can be extracted from P&IDs at different levels and that P&IDs form the basis for setting up effective DBNs. The process was applied to real sensor data for a whole year. In a case study for a thermal energy plant, control faults were successfully isolated using balance, energy performance and operational state symptoms. Correction of the isolated faults led to annual primary energy savings of 25%. An analysis showed that the values of set probabilities in the DBN model are not outcome-sensitive. Link to the formal publication via its DOI https://doi.org/10.1016/j.enbuild.2020.110289

PDF

P&ID-based automated fault identification for energy performance diagnosis in HVAC systems:

product

Cool Towns Heat Stress Measurement Protocol

Cities are confronted with more frequent heatwaves of increasing intensity discouraging people from using urban open spaces that are part of their daily lives. Climate proofing cities is an incremental process that should begin where it is needed using the most cost-efficient solutions to mitigate heat stress. However, for this to be achieved the factors that influence the thermal comfort of users, such as the layout of local spaces, their function and the way people use them needs to be identified first. There is currently little evidence available on the effectiveness of heat stress interventions in different types of urban space.The Cool Towns Heat Stress Measurement Protocol provides basic guidance to enable a full Thermal Comfort Assessment (TCA) to be conducted at street-level. Those involved in implementing climate adaptation strategies in urban areas, such as in redevelopments will find practical support to identify places where heat stress may be an issue and suggestions for effective mitigation measures. For others, such as project developers, and spatial designers such as landscape architects and urban planners it provides practical instructions on how to evaluate and provide evidence-based justification for the selection of different cooling interventions for example trees, water features, and shade sails, for climate proofing urban areas.

MULTIFILE

Cool Towns Heat Stress Measurement Protocol

product

Progress towards 4DHC in different national and regional contexts

Lessons learned on the progress towards 4th generation district heating (4DHC) are presented from 6 pilot implementation projects in the UK, Ireland, Belgium, France, and the Netherlands (HeatNet project). The pilots have implemented the infrastructure for district heating from various (waste) heat and renewable sources to reduce CO2 emissions. With the development of long term road maps, progress is made towards the role out of 4DHC in the regions. The pilots have a different level of experience with district heating and transnational learning is specifically addressed. Purpose of the evaluation of the pilots is to give local authorities insight into barriers and solutions and the way they are closely linked to stakeholders in their geographical, politicaland cultural context in NWE. To do this, the financial, regulatory and organisational barriers the pilots face and possible solutions that were shared between the pilots are analysed in the context of system innovation. Differences in national and regional contexts have been analysed to be able to generalise solutions to a level they can be used in a different context. We will confront the pilot’s development with best and worst practice from literature and score Key Success Factors.

MULTIFILE

Progress towards 4DHC in different national and regional contexts

product

Collaboration in the local DHC-chain: A bottom-up integrated framework fostering broad-based solutions

The sustainable energy transition asks for new and innovative solutions in the way society, government, energy market and clients (end users) approach energy distribution and consumption. The energy transition provides great opportunity to develop innovative solutions where in the dense built environment district heating and cooling are being strongly advocated.Traditionally, the energy systems in urban districts have been regulated by a top-down approach. With the rise of local and distributed sustainable sources for urban heating and cooling, the complexity of the heat/cold chain is increasing. Therefore, an organic and bottom-up approach is being requested, where the public authorities have a facilitating and/or directive role. There is a need for a new and open framework for collaboration between stakeholders. A framework that provides insight into the integral consideration of heating and cooling solutions on district level in terms of: organisation, technology and economy (OTE). This research therefore focuses on developing this integral framework towards widely supported heating and cooling solutions among district stakeholders.Through in-depth interviews, workshops and focus groups discussions, relevant stakeholders in local district heating/cooling of varying backgrounds and expertise have been consulted. This has led to two pillars in a framework. Firstly the definition of Key Success Factors and Key Performance Indicators to evaluate technical solutions in light of the respective context. Secondly, an iterative decision making process among district stakeholders where technical scenarios, respective financial business cases and market organisation are being negotiated. Fundamental proposition of the framework is the recurrent interaction between OTE factors throughout the entire decision making process. In order to constantly assure broad-based support, the underlying nature of possible barriers for collaboration are identified in a stakeholder matrix, informing a stakeholder strategy. It reveals an open insight of the interests, concerns, and barriers among all stakeholders, where solutions can be developed effectively.

PDF

Search results

Products 63

Family Dairy Tech, India

2nd European SimStadt Workshop at Saxion University of Applied Sciences in Enschede (NL)

The Benefits of Positive Energy Districts

Energy matching: exploring the value of demand flexibility in educational office buildings

Assessing the performance of Positive Energy Districts: The need for innovative methods

P&ID-based automated fault identification for energy performance diagnosis in HVAC systems:

Cool Towns Heat Stress Measurement Protocol

Progress towards 4DHC in different national and regional contexts

Collaboration in the local DHC-chain: A bottom-up integrated framework fostering broad-based solutions

Navigate to

Categories

Filters

Products 63

Family Dairy Tech, India

2nd European SimStadt Workshop at Saxion University of Applied Sciences in Enschede (NL)

The Benefits of Positive Energy Districts

Energy matching: exploring the value of demand flexibility in educational office buildings

Assessing the performance of Positive Energy Districts: The need for innovative methods

P&ID-based automated fault identification for energy performance diagnosis in HVAC systems:

Cool Towns Heat Stress Measurement Protocol

Progress towards 4DHC in different national and regional contexts

Collaboration in the local DHC-chain: A bottom-up integrated framework fostering broad-based solutions