for Sustainable Cooling Lekha Patmanathan 1 Nexergy 2019 - - PowerPoint PPT Presentation

η Automating Thermodynamics for Sustainable Cooling Lekha Patmanathan 1 Nexergy 2019 - Confidential – Please Do Not Circulate

η This Photo by Unknown Author is licensed under CC BY-NC-ND Nexergy 2019 - Confidential – Please Do Not Circulate 2

η Nexergy 2019 - Confidential – Please Do Not Circulate 3

η "Air conditioning was a most important invention for us, perhaps one of the signal inventions of history. It changed the nature of civilization by making development possible in the tropics. Without air conditioning you can work only in the cool early-morning hours or at dusk. The first thing I did upon becoming prime minister was to install air conditioners in buildings where the civil service worked. This was key to public efficiency." Nexergy 2019 - Confidential – Please Do Not Circulate 4

Typical Chiller Plant System Nexergy 2019 - Confidential – Please Do Not Circulate

A Thermodynamic Approach P1 Pressure P2 h2 h1 h3 Enthalpy Sustainable Cooling is Optimizing Heat Exchange and Preventing typical mechanical issues from happening that affect Efficiency and Performance

η Thermodynamic analyses of a standard system Pressure Liquid temp Discharge temp 1. Condensing pressure + 3 High P 1 Discharge temp. Heating capacity Evaporation pressure 2. Ideal compression + Suction gas temp. 2 Cooling capacity Low P 3. Condensing pressure suction + Liquid temp. temp Electric power Enthalpy differences 𝑒𝐼 𝑓𝑤𝑏𝑞𝑝𝑠𝑏𝑢𝑝𝑠 𝑒𝐼 Enthalpy 𝑑𝑝𝑛𝑞. Massflow = Electrical power − heatloss COP = 𝐷𝑝𝑝𝑚𝑗𝑜𝑕 𝑑𝑏𝑞𝑏𝑑𝑗𝑢𝑧 𝑛𝑏𝑡𝑡 𝑔𝑚𝑝𝑥 ∗ 𝑒𝐼 𝑓𝑤𝑏𝑞𝑝𝑠𝑏𝑢𝑝𝑠 Enthalpy increase compressor 𝑛𝑏𝑡𝑡 𝑔𝑚𝑝𝑥 ∗ 𝑒𝐼 𝑑𝑝𝑛𝑞𝑠𝑓𝑡𝑡𝑝𝑠 + 𝒊𝒇𝒃𝒖𝒎𝒑𝒕𝒕 Compressor power =

The ClimaCheck technology & method is an unbiased 3 rd party M&V system using Cloud based Monitoring and Data Analytics Platform to measure and identify issues in any HVAC system for Predictive Maintenance. PA Pro III Online PA Pro III Onsite

Two Products for all our Real World Applications Nexergy 2019 - Confidential – Please Do Not Circulate 9

η Nexergy 2019 - Confidential – Please Do Not Circulate 10

Intelligent Analytics According to the chiller’s specific refrigeration cycle, a thermodynamic model is developed using advanced mathematical, computing tools together with intelligent Condense analytics. The technology also uses r refrigerant, lubricant, water and air thermodynamic databases when required Evaporator

η Nexergy 2019 - Confidential – Please Do Not Circulate 12

Using Advanced Thermodynamics , IoT , big-data analytics and USP’s cloud computing:  Fully integrated technology, Hardware Agnostic, Open Source  Non-invasive, installs in minutes.  Temporary & Permanent deployment varieties  Carnot ideal cycle performance of systems η EXERGY Nexergy 2019 - Confidential – Please Do Not Circulate 13

η Benefits  Improved Asset performance  Increased Efficiency  Predictive/Conditional Maintenance (as opposed to reactive maintenance)  Reduced operational cost  Electricity, Maintenance, Manpower, Water  Reduction in Emissions  Greenhouse gasses, Carbon  Increase reliability  Peace of mind for mission critical equipment  Increased longevity of equipment  Lowering Total Cost of Ownership

Lekha Patmanathan Founder 28C Stanley Street 068737 Singapore M:+65 9018 5230 E: lekha@nexergy.sg W: www.nexergysolutions.com Nexergy 2019 - Confidential – Please Do Not Circulate

η Easy to apply – to standard service “points” Electrical input 7 surface temperatures 2 pressures from service ports

System Efficiency Index (SEI) Developed by ClimaCheck & SP Technical Research Institute of Sweden (RISE). Funded by Swedish Energy Agency. • ClimaCheck determines the COP that your chiller is able to deliver for the actual conditions that thermodynamically limits your chiller performance. • Manufacturer’s method are based on design data, but systems “never” operate at design data. ClimaCheck calculates the actual COP (and kWh/ton) based on actual and ambient conditions. It identifies Energy Efficiency opportunities to maximize the COP even beyond the manufacturer standard. ClimaCheck provides a third party analysis without bias. As such, it will be able to identify calibration • needs in your sensors.