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Title: Towards a framework for selection of supervisory control for commercial buildings: HVAC system energy efficiency

Abstract

This paper develops and utilizes an optimization based framework to investigate the maximal energy efficiency potentially attainable by HVAC system operation in a non-predictive context. Performance is evaluated relative to the existing state of the art set-point reset strategies. The expected efficiency increase driven by operation constraints relaxations is evaluated.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1373866
Report Number(s):
PNNL-SA-124310
BT0310000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: American Control Conference (ACC 2017), May 24-26, 2017, Seattle, Washington, 2925-2930
Country of Publication:
United States
Language:
English

Citation Formats

Ramachandran, Thiagarajan, Kundu, Soumya, Chen, Yan, and Vrabie, Draguna L. Towards a framework for selection of supervisory control for commercial buildings: HVAC system energy efficiency. United States: N. p., 2017. Web. doi:10.23919/ACC.2017.7963395.
Ramachandran, Thiagarajan, Kundu, Soumya, Chen, Yan, & Vrabie, Draguna L. Towards a framework for selection of supervisory control for commercial buildings: HVAC system energy efficiency. United States. doi:10.23919/ACC.2017.7963395.
Ramachandran, Thiagarajan, Kundu, Soumya, Chen, Yan, and Vrabie, Draguna L. Mon . "Towards a framework for selection of supervisory control for commercial buildings: HVAC system energy efficiency". United States. doi:10.23919/ACC.2017.7963395.
@article{osti_1373866,
title = {Towards a framework for selection of supervisory control for commercial buildings: HVAC system energy efficiency},
author = {Ramachandran, Thiagarajan and Kundu, Soumya and Chen, Yan and Vrabie, Draguna L.},
abstractNote = {This paper develops and utilizes an optimization based framework to investigate the maximal energy efficiency potentially attainable by HVAC system operation in a non-predictive context. Performance is evaluated relative to the existing state of the art set-point reset strategies. The expected efficiency increase driven by operation constraints relaxations is evaluated.},
doi = {10.23919/ACC.2017.7963395},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 03 00:00:00 EDT 2017},
month = {Mon Jul 03 00:00:00 EDT 2017}
}

Conference:
Other availability
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  • This paper describes a supervisory control strategy for limiting peak power demand by small and medium commercial buildings while still meeting the business needs of the occupants. This control strategy has two features that make it relevant to new and existing buildings. First, it is designed to operate with building equipment, such as air conditioning and refrigeration systems, as they are presently installed in most small and medium commercial buildings. Because of this, the supervisory control could be realized as a software-only retrofit to existing building management systems. Second, the proposed control acts as a supervisory management layer over existingmore » control systems, rather than replacing them outright. The primary idea of this approach is that the controls for individual building equipment request energy resources for a control action and the supervisory control examines the requests and decides which control actions to allow while satisfying a limit on peak power demand.« less
  • Abstracts were prepared for 47 of the 48 papers (in 2 volumes) presented at the conference. One paper has been previously abstracted for the data bases. Volume II contains 15 papers including a keynote address. A separate abstract was prepared for each paper. Two papers are announced with abstracts only. (MCW)
  • Abstracts were prepared for 47 of the 48 papers (in 2 volumes) presented at the Conference; one paper was processed previously. In Volume I, abstracts were prepared for 33 of the 47 papers, with abstracts prepared for the remaining papers appearing in Volume II. Two citations are announced with abstracts only. (MCW)
  • Eight papers on heating and air conditioning equipment were presented. A separate abstract was prepared for each paper. (LCL)
  • While buildings smaller than 50,000 sq ft account for nearly half of the energy used in US commercial buildings, energy efficiency programs to-date have primarily focused on larger buildings. Interviews with stakeholders and a review of the literature indicate interest in energy efficiency from the small commercial building sector, provided solutions are simple and low-cost. An approach to deliver energy management to small commercial buildings via HVAC contractors and preliminary demonstration findings are presented. The energy management package (EMP) developed includes five technical elements: benchmarking and analysis of monthly energy use; analysis of interval electricity data (if available), a one-hourmore » onsite walkthrough, communication with the building owner, and checking of results. This data-driven approach tracks performance and identifies low-cost opportunities, using guidelines and worksheets for each element to streamline the delivery process and minimize the formal training required. This energy management approach is unique from, but often complementary to conventional quality maintenance or retrofit-focused programs targeting the small commercial segment. Because HVAC contractors already serve these clients, the transaction cost to market and deliver energy management services can be reduced to the order of hundreds of dollars per year. This business model, outlined briefly in this report, enables the offering to benefit the contractor and client even at the modest expected energy savings in small buildings. Results from a small-scale pilot of this approach validated that the EMP could be delivered by contractors in 4-8 hours per building per year, and that energy savings of 3-5percent are feasible through this approach.« less