Commercial Building Energy Saver: An energy retrofit analysis toolkit
|Title||Commercial Building Energy Saver: An energy retrofit analysis toolkit|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Hong, Tianzhen, Mary Ann Piette, Yixing Chen, Sang Hoon Lee, Sarah C. Taylor-Lange, Rongpeng Zhang, Kaiyu Sun, and Phillip N. Price|
|Keywords||Building Technologies Department, Building Technology and Urban Systems Division, buildings, buildings energy efficiency, Commercial Building Systems, conservation measures, energy efficiency, energy use, energyplus, External, Retrofit Energy, simulation research|
Small commercial buildings in the United States consume 47% of the total primary energy of the buildingssector. Retrofitting small and medium commercial buildings poses a huge challenge for owners becausethey usually lack the expertise and resources to identify and evaluate cost-effective energy retrofit strategies.This paper presents the Commercial Building Energy Saver (CBES), an energy retrofit analysis toolkit,which calculates the energy use of a building, identifies and evaluates retrofit measures in terms ofenergy savings, energy cost savings and payback. The CBES Toolkit includes a web app (APP) for end usersand the CBES Application Programming Interface (API) for integrating CBES with other energy softwaretools. The toolkit provides a rich set of features including: (1) Energy Benchmarking providing anEnergy Star score, (2) Load Shape Analysis to identify potential building operation improvements, (3)Preliminary Retrofit Analysis which uses a custom developed pre-simulated database and, (4) DetailedRetrofit Analysis which utilizes real-time EnergyPlus simulations. CBES includes 100 configurable energyconservation measures (ECMs) that encompass IAQ, technical performance and cost data, for assessing 7different prototype buildings in 16 climate zones in California and 6 vintages. A case study of a smalloffice building demonstrates the use of the toolkit for retrofit analysis. The development of CBES providesa new contribution to the field by providing a straightforward and uncomplicated decision making processfor small and medium business owners, leveraging different levels of assessment dependent uponuser background, preference and data availability.
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