1 / 9

Optimising efficiency via design for good controllability under a wide range of conditions

Learn how to maximise energy efficiency and control in a wide range of conditions through product-level design and system-level optimizations. Explore the potential savings and benefits of electronic expansion valves, ejectors, evaporative cooling, and energy management systems.

jfeliciano
Download Presentation

Optimising efficiency via design for good controllability under a wide range of conditions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Optimising efficiency via design for good controllability under a wide range of conditions 40th OEWG - Workshop on energy efficiency opportunities while phasing-down hydrofluorocarbons (HFCs) Raul SimonettiVienna, 9 July 2018 This document and all of its contents are property of CAREL All unauthorised use, reproduction or distribution of this document or the information contained in it, by anyone other than CAREL,is severely forbidden

  2. Product-level: savings by EU’s Ecodesign Saving around 16% of the EU’s primary energy by 2020 vs. 2010 (est.’d). From “Ecodesign Impact Accounting – Status Report 2017”, European Commission, 22 Dec 2017 Set of product-level, technology-neutral, energy-saving & eco requirements for a wide range of products: • Mainly minimum efficiency levels • Better insulation • Energy recovery • Modulation of output

  3. Electronic expansion valve They have a step-by-step motor driven by an “intelligent” controller to adapt the evaporating temperature to the actual need

  4. Ejector: helps at hightemperature (TC cycles) TC CO2 TC CO2 TC CO2

  5. Evaporative cooling evaporative cooling: -10% to -20% The evaporative cooling system can decrease the outside temperature perceived by the gas cooler by between 5 and 15°C. evaporative cooling

  6. System-level: savings • System = set of products working together • Buildings can be used as a good reference because they are complex systems where different products co-exist • Savings from any type of building by combining energy-efficiency measures (controls, sensors, and others): • 16%-49% (Table 24 in “Optimising the energy use of technical building systems – unleashing the power of the EPBD’s Article 8”, by ECOFYS and WAIDE STRATEGIC EFFICIENCY LTD., 27 March 2017, EU) • 23%-49% (Figure S.2 in “Impacts of Commercial Building Controls on Energy Savings and Peak Load Reduction”, by PNNL’s report 25985, May 2017, USA) • Note: ranges are wide because savings are difficult to estimate due to the variety of systems

  7. Energy Management Systems (EMSs) Monitor energy consumption and help improve energy efficiency (IEA’s “Energy Efficiency 2017”, pages 74-78)

  8. CONCLUSIONS • Efficiency of products usually is the 1st step: better insulation, energy recovery and modulation in various forms • Modulation also helps when changing refrigerants because the “intelligence” and start-of-the-art parts added to products allow to better adapt • 2nd step is efficiency of systems of products to harness more potential energy saving (+ DSF) • 3rd step is the EMSs, supervisory systems and IoT (+DSF) to pro-actively improve the performances of products and systems

More Related