The Importance of Proper Scheduling of Energy Equipment in Combined Heat and Power Plants for Buildings: A Case Study

2009 ◽  
Author(s):  
T. Agami Reddy ◽  
Itzhak Maor
Keyword(s):  
New York ◽  
Power Plants ◽  
Building Energy ◽  
Combined Heat And Power ◽  
Energy Needs ◽  
Study Results ◽  
Prime Movers ◽  
Cost Implications ◽  
Electric Loads

There is increasing interest in using Combined Heat and Power (CHP) systems to supply the energy needs in commercial/institutional buildings. However, due to the large diurnal and seasonal variability in building thermal and electric loads, such systems in buildings (BCHP) require more careful and sophisticated operation as compared to those in industrial CHP. Operating such systems consists of two separate issues: (i) equipment scheduling which involves determining which of the numerous equipment combinations to operate, i.e., is concerned with starting or stopping prime movers, boilers and chillers; and (ii) the second and lower level type of control, called supervisory control, which involves determining the optimal values of the control parameters (such as loading of primemovers, boilers and chillers) under a specific combination of equipment schedule. This paper is concerned with both these aspects, and presents case study results of a school under real-time electrical pricing (RTP) located in New York City, NY. A school has been selected for study because of its high diurnal and seasonal load variability. The approach first involved simulating the buildings using a detailed building energy simulation program to obtain hourly electrical and thermal loads which were then used to size the BCHP system components. Subsequently, a certain number of days in the year were identified, and simulation runs were performed for optimal scheduling control as well as for all the feasible (but non-optimal) equipment combinations. The energy and cost implications of operating the BCHP system in a non-optimal manner under various scheduling combinations are presented and discussed.

Do Combined Heat and Power plants perform? Case study of publicly funded projects in New York

Energy Policy ◽  
2016 ◽  
Vol 97 ◽  
pp. 618-627 ◽  
Author(s):  
Rasika Athawale ◽  
Frank A. Felder ◽  
Leo A. Goldman
Keyword(s):  
New York ◽  
Power Plants ◽  
Combined Heat And Power ◽  
Publicly Funded

scholarly journals Estimating the effect of equipment reliability indices, schedules, and regular overhaul scopes on reliability and efficiency of combined heat and power plants

2018 ◽  
Vol 58 ◽  
pp. 02014
Author(s):  
Elena Stepanova ◽  
Alexey Maksimov
Keyword(s):  
Power Plants ◽  
Combined Heat And Power ◽  
Reliability Indices ◽  
Equipment Reliability ◽  
Operation Period ◽  
Industrial Heating ◽  
Electric Loads

We have developed a technique and a programming-computing suite (PCS) to estimate the effect of equipment reliability indices, schedules, and regular overhaul scopes on reliability and efficiency of combined heat and power plants (CHPPs). We describe the approach to predict heat and electric loads for the investigated CHPP operation period, taking into account the features of the power cogeneration. We performed optimization studies of two operation periods (different in overhaul resources) for an industrial-heating CHPP.

scholarly journals A Quantitative Study on the Requirement for Additional Inertia in the European Power System until 2050 and the Potential Role of Wind Power

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2309 ◽  
Author(s):  
Christos Agathokleous ◽  
Jimmy Ehnberg
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Plants ◽  
Worst Case ◽  
Study Results ◽  
The Future ◽  
Alternative Sources ◽  
The Eu

A significant amount of conventional power plants in the European power system is anticipated to be replaced by solar and wind power in the future. This may require alternative sources for inertia support. The purpose of the paper is to learn about the consequences on the frequency deviation after a fault in the European power system when more wind and solar are introduced and when wind is considered as a possible provider of inertia. This study quantifies the expected maximum requirement for additional inertia in the future European power system up to 2050. Furthermore, we investigated the possibility of wind power to meet this additional need by providing emulated inertia. The European power system of the EU-28 countries has been clustered to the five synchronous grids, UCTE, Nordic, UK, Baltic and Irish. The future European energy mix is simulated considering twelve different scenarios. Production units are dispatched according to their expected environmental impacts, which closely follow the minimum natural contribution of inertia, in descending order. The available capacity for all the types of production is considered the same as the installed. For all the simulated scenarios the worst case is examined, which means that a sudden disconnection of the largest production unit of the dispatched types is considered. Case study results reveal that, in most cases, additional inertia will be required but wind power may fully cover this need for up to 84% of all simulated horizons among all the scenarios on the UCTE grid, and for up to 98%, 86%, 99% and 86% on the Nordic, UK, Baltic and Irish grids, respectively.

scholarly journals ELDER VOICES NETWORK: PARTNERING WITH OLDER PEOPLE AND THEIR CAREGIVERS TO AVOID MEDICAL HARM

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S690-S690
Author(s):  
Molly Ranahan ◽  
Mary Brennan-Taylor ◽  
Michael Richbart ◽  
Collin Clark ◽  
Ryan Gadzo ◽  
...  
Keyword(s):  
New York ◽  
Older People ◽  
Community Based Participatory Research ◽  
Erie County ◽  
Self Advocacy ◽  
Study Results ◽  
Critical Components ◽  
Senior Services ◽  
Future Patient

Abstract Team Alice, named after an older adult in our community who died as a result of medication harm, is an interdisciplinary team of prescribers, pharmacists, educators, advocates, and researchers with a mission to protect older people from medication-related harm across the continuum of care. In 2019, Team Alice partnered with the Erie County Department of Senior Services, older people, and caregivers to form the Elder Voices Network (EVN) as a vehicle for patient-driven deprescribing in the Western New York region. The objective of this presentation is to detail the planning and implementation of critical components of EVN’s formation, including outreach and engagement, funding development, community partnerships, roles and communication, and decision-making. Case study results demonstrate the capacity of community-based participatory research (CBPR) to empower older people and caregivers with knowledge, skills, and tools to promote self-advocacy across the system. Presenters will also discuss recommendations useful for future patient engagement initiatives.

Syllabi as Cybergenre

2005 ◽  
Vol 34 (2) ◽  
pp. 223-240 ◽  
Author(s):  
Paula San Millan Maurino
Keyword(s):  
New York ◽  
Communication Technologies ◽  
Genre Theory ◽  
Full Time ◽  
State University ◽  
Online Classes ◽  
Political Issues ◽  
Study Results ◽  
Cultural Power

Modern communication technologies continue to spawn new and transformed genres, but in the digital realm, distinctions between form, content, and medium are blurred. Confounding this issue is the fact that genres are usually specific to a particular discourse community of users with learned social and cultural expectations. In the domain of higher education, genres such as lesson plans, reading lists, and tests revolve around the creation of a course syllabus, itself a genre. As a preliminary analysis, a case study of selected syllabi from State University of New York at Farmingdale was conducted. Print syllabi for traditional classes, digital syllabi for traditional classes, and digital syllabi for online classes at the State University of New York at Farmingdale were examined using the genre theory of <content, form functionality> and a 5W1H (who, what, when, where, why, and how) communications framework. The research questions posed were: What are the similarities and differences between print syllabi genres for traditional classes, digital syllabi genres for traditional classes, and digital syllabi genres for online classes? What are some of the factors that account for the degree of uniformity in syllabi genre? Study results indicate that syllabi genres do evolve into replicated variant cybergenres with enhanced functionality, but that this does not always happen. There can be barriers to this evolution. One of those barriers is software. Other barriers may include social, cultural, power, and political issues. It also showed that closer knit communities such as full-time faculty produced more consistent, uniform syllabi genres than isolated adjuncts.

scholarly journals From Firm Solar Power Forecasts to Firm Solar Power Generation: An Effective Path to Ultra-High Renewable Penetration - A New York Case Study

2020 ◽  
Author(s):  
Richard Perez ◽  
Marc Perez ◽  
Sergey Kivalov ◽  
James Schlemmer ◽  
John Dise ◽  
...  
Keyword(s):  
Power Generation ◽  
New York ◽  
Power Plants ◽  
Solar Power ◽  
Production Costs ◽  
Electricity Production ◽  
Prediction Errors ◽  
Firm Power ◽  
Solar Penetration

We introduce firm solar forecasts as a strategy to operate optimally overbuilt solar power plants in conjunction with optimally sized storage systems so as to make up for any power prediction errors, hence entirely remove load balancing uncertainty emanating from grid-connected solar fleets. A central part of this strategy is plant overbuilding that we term implicit storage. We show that strategy, while economically justifiable on its own account, is an effective entry step to least-cost ultra-high solar penetration where firm power generation will be a prerequisite. We demonstrate that in absence of an implicit storage strategy, ultra-high solar penetration would be vastly more expensive. Using the New York Independent System Operator (NYISO) as a case study, we determine current and future cost of firm forecasts for a comprehensive set of scenarios in each ISO electrical region, comparing centralized vs. decentralized production and assessing load flexibility&rsquo;s impact. We simulate the growth of the strategy from firm forecast to firm power generation. We conclude that ultra-high solar penetration enabled by the present strategy, whereby solar would firmly supply the entire NYISO load, could be achieved locally at electricity production costs comparable to current NYISO wholesale market prices.

A Tool for Analyzing Science Standards and Curricula for 21st Century Science Education

2013 ◽  
pp. 265-289 ◽  
Author(s):  
Danielle E. Dani ◽  
Sara Salloum ◽  
Rola Khishfe ◽  
Saouma BouJaoude
Keyword(s):  
New York ◽  
21St Century ◽  
Rating Scales ◽  
Individual Case ◽  
School Science ◽  
Arab Countries ◽  
Science Standards ◽  
Study Results ◽  
Century Science

Twentieth century curricula are no longer sufficient to prepare students for life and work in today’s diverse, fast-paced, technologically driven, and media saturated world of the 21st century. This chapter presents a new framework for analyzing science standards and curricula to determine the extent of alignment with 21st Century essential understandings and skills. The Tool for Analyzing Science Standards and Curricula (TASSC) was developed using the conceptual frameworks proposed by the Partnership for 21st Century Skills, the Organization for Economic Co-Operation and Development, and the typology of knowledge proposed by Jurgen Habermas. Development of TASSC relied on an iterative process of refinement, testing, and discussions resulting in an instrument with three sections and related rating scales: content, skills, and additional curricular components. TASSC was piloted using middle school science standards and curricula in the context of two US states (Ohio and New York) and two Arab countries (Lebanon and Qatar). The analysis procedure and individual case study results are presented and discussed in the chapter.

scholarly journals From Firm Solar Power Forecasts to Firm Solar Power Generation an Effective Path to Ultra-High Renewable Penetration a New York Case Study

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4489
Author(s):  
Richard Perez ◽  
Marc Perez ◽  
James Schlemmer ◽  
John Dise ◽  
Thomas E. Hoff ◽  
...  
Keyword(s):  
Power Generation ◽  
New York ◽  
Power Plants ◽  
Solar Power ◽  
Production Costs ◽  
Electricity Production ◽  
Prediction Errors ◽  
Firm Power ◽  
Solar Penetration

We introduce firm solar forecasts as a strategy to operate optimally overbuilt solar power plants in conjunction with optimally sized storage systems so as to make up for any power prediction errors, and hence entirely remove load balancing uncertainty emanating from grid-connected solar fleets. A central part of this strategy is the plant overbuilding that we term implicit storage. We show that strategy, while economically justifiable on its own account, is an effective entry step to achieving least-cost ultra-high solar penetration where firm power generation will be a prerequisite. We demonstrate that in the absence of an implicit storage strategy, ultra-high solar penetration would be vastly more expensive. Using the New York Independent System Operator (NYISO) as a case study, we determine current and future costs of firm forecasts for a comprehensive set of scenarios in each ISO electrical region, comparing centralized vs. decentralized production and assessing load flexibility’s impact. We simulate the growth of the strategy from firm forecast to firm power generation. We conclude that ultra-high solar penetration enabled by the present strategy, whereby solar would firmly supply the entire NYISO load, could be achieved locally at electricity production costs comparable to current NYISO wholesale market prices.

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